• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a metallic anchoring element (12) of an anti-erosion coating intended to be fastened alone in isolation on a metal wall or assembled with other identical anchoring elements. The anchoring element (12) has an attachment edge (12'a) on said metal wall and an anchoring body secured to the fixing edge (12'a) and having an upper edge (12b) remote from the edge fixing and intended to be covered by a composite material of the concrete type. A portion of this upper edge (12b), which is not intended to be juxtaposed and assembled at an upper edge of an identical anchoring element, is provided with a delimiting tab (16) for delimiting a height of composite material to cover the upper edge (12b) of said anchoring element, said delimiting tab (16) having a delimiting edge (18) remote from a plane defined by the upper edge (12b) of the element anchoring a predetermined distance.
    公开号:FR3028307A1
    申请号:FR1460778
    申请日:2014-11-07
    公开日:2016-05-13
    发明作者:Sebastien Decker；Hubert Simon
    申请人:Total Raffinage Chimie SAS；
    IPC主号:
    专利说明:

    [0001] The invention relates to an anchoring element of an anti-erosion coating on an inner or outer wall of a Fluid Catalytic Cracking (FCC) chamber.
    [0002] The invention particularly relates to an anchoring element of an anti-erosion coating intended to protect a wall of a cyclone, a reactor plenum, a stripper, a riser (riser), a downer (downstream reactor), a standpipe ( vertical tubes), the withdrawal or withdrawal wells forming part of a fluid catalytic cracking unit. The invention also relates to an anchoring structure formed from the assembly of anchoring elements according to the invention, a coating using anchoring elements or an anchoring structure according to the invention and a method for producing an anti-erosion coating using anchoring elements according to the invention. The metal walls of the various enclosures of an FCC unit, such as for example a disengager and a regenerator, and the metal walls of the internal equipment located in the regenerator or the disengager, in particular the cyclones, can undergo erosion due to the circulation. catalyst particles in the unit, and at the regenerator, a massive corrosion by the gases produced during combustion to regenerate the catalyst. It is therefore necessary to protect these metal walls in order to extend their life.
    [0003] The metal walls of the speakers of a catalytic cracking unit and the equipment internal to these enclosures are thus covered with a coating intended to protect them mainly from erosion. Such coatings are generally made of a composite material, usually a concrete, maintained by an anchoring structure, usually metal. These anchoring structures are welded to the metal walls and thus ensure the attachment of the composite material. They can come in different forms. It can thus be a plurality of hexagonal cells secured to one another by one side so as to form a honeycomb structure (Hexmesht). S, K or other geometrically shaped strips extending parallel to the wall, anchored in the wall by a support foot perpendicular to the wall, are also used. Such S-shaped or K-shaped strips are also called "S bars" or "K bars" in English and are instead used in isolation, for example on surfaces with complex geometry that can not receive a nest anchor structure bee. Hexagon anchors are also used in isolation for anchoring to complex geometry surfaces. Like the S-bars, these hexagon-shaped anchoring elements are most often used in isolation, without contact with adjacent anchoring elements. There are also square honeycomb type structures formed of strips connected in pairs by rods forming axes of rotation (Flexmesht). This type of structure has the advantage of being able to marry a curved wall without prior shaping. After fixing these anchoring elements on the metal wall to be protected, a composite material is applied to the metal wall equipped with the anchoring elements so as to cover the latter. However, this composite material is generally applied and smoothed using a plate (trowel or trowel) resting on the anchoring elements, so that in practice, the concrete is flush with the top of the anchoring elements. It may happen that some anchoring elements are not completely covered with concrete and that gaps remain allowing the diffusion of gas between the concrete and the anchor, or between two assembled anchors. The penetration of catalyst particles into these interstices is also possible at these locations.
    [0004] On the other hand, the difference in coefficient of expansion between the metal anchor and the concrete causes, when exposed to high temperature in the operating conditions of the FCC unit, the appearance of interstices between the side walls. concrete biscuits and anchoring, again allowing the diffusion of gaseous species from the process and catalyst.
    [0005] When this coating is in contact with the gases from the cracking of the load, for example in the disengager or cyclones located in the disengager, these gases can lead to the formation of coke within these interstices. This formation of coke can lead to significant detachment of the coating during successive cycles of cooling / reheating of the enclosure. When the coating is in contact with a gas containing, inter alia, oxygen, oxides of carbon, sulfur and nitrogen, such as for example the gases present in a regenerator or in the internal equipment of a regenerator , including cyclones, plenum, standpipe, this gas penetrates through the interstices of the coating and causes phenomena of sulfurization, carburization and oxidation, particularly at the level of the welds fixing the metal anchoring structure to the metal walls, which can cause a uncoupling of the anchoring structure.
    [0006] Whatever the degradation phenomena observed, corrosion, in particular by sulphidation, carburization, oxidation, or formation of coke, the Applicant has found that these phenomena occur mainly at the level of the metal anchoring structure and / or its connection by welding to metal walls, and especially at juxtaposed portions of the anchoring structure in the case of honeycomb-shaped anchoring structures. There is therefore a need for an anti-erosion coating anchor element that is more resistant to degradation phenomena, in particular to corrosion, in particular by sulfurization, carburization, oxidation, or coke formation. In order to remedy this problem, the Applicant has proposed in the application W02014 / 0092625 A1 a particular method of producing a coating for a honeycomb anchoring structure, which notably comprises a step of fixing by particular welding of the anchoring structure. It was also proposed to produce honeycomb structures having different heights at their assembled walls in order to promote the clogging of the interstices between these walls assembled by the composite material. The method described however does not relate to the anchoring elements used in isolation. The invention aims at overcoming the aforementioned drawbacks by proposing a metal anchoring element of an anti-erosion coating on an internal or external metal wall of a fluid catalytic cracking unit enclosure, said element being intended to be fixed. alone in isolation on said metal wall, such as, for example, the S-bar, K-bar, or hexagonal-type anchoring elements mentioned above, or being intended to be fixed on said metal wall assembled to other identical anchoring elements, such as honeycomb anchors (Hexmesht, Flexmesht). The anchoring element according to the invention has a fastening edge intended to be fixed on the metal wall to be protected and an anchoring body integral with the fastening edge, said anchoring body having an upper edge remote from the edge of the fastener. fixation and intended to be covered by a concrete-type composite material, this upper edge defining a plane.
    [0007] According to the invention, at least one portion of the upper edge, which is not intended to be juxtaposed and assembled at an upper edge of another identical anchoring element, is provided with a delimiting tab to delimit a height of composite material to cover the upper edge of said anchoring element, said delimiting tab having a delimiting edge remote from the plane defined by the upper edge of the anchoring element by a predetermined distance. Thus, this delimiting lug will serve as a marker during the application of the composite material, the worker can smooth the composite material up to the delimiting edge of the delimiting tab by the smoothing tool (trowel or trowel). In this way, the remainder of the anchoring element, in particular the remainder of the upper edge, situated further from the delimiting tab, is covered with a layer of composite material at least equal to the predetermined distance, to limit the formation of interstice passing the corrosive gases. In addition, the Applicant has found that the realization of a delimiting tab on one part of the unassembled anchoring element to another anchoring element makes it possible to reduce the formation of interstices between the assembled parts after application of the composite material. The predetermined distance can be chosen so that once dry, the concrete-type composite material is always flush with the delimiting tab or tabs. By way of example, this distance may be at least 2 mm, for example less than or equal to 10 mm, preferably less than or equal to 6 mm, or even less than or equal to 3 mm. Advantageously and in a nonlimiting manner, the section may extend over part of the length of the upper edge. For example, the delimiting tab may extend at most 1/2 or at most 1/4 of the length of the upper edge, this to limit the potential areas of introduction of the gas. It suffices for the delimiting lug to protrude from the upper edge so as to be able to be identified by the worker applying the composite material. For example, the length of the delimiting tab, and in particular of its delimiting edge is 10 to 22 mm. The delimiting tab may be disposed in the middle of said upper edge, which may simplify the realization of the anchoring element.
    [0008] Advantageously and in a nonlimiting manner, the anchoring body may be formed by folding or bending a flat strip along an axis perpendicular to a longitudinal direction of the strip, in the plane of the strip, and said delimiting tab extends in the extension of said flat strip perpendicular to said longitudinal direction. In other words, the delimiting tab then corresponds to a zone of the flat band of greater width. The delimiting tab can thus be obtained in a simple manner, especially when it is made in one piece with the anchoring body.
    [0009] Advantageously and in a nonlimiting manner, the anchoring element is made of stainless steel (a stainless steel contains at most 1.2% by weight of carbon and at least 10.5% by weight of chromium according to the EN10008 standard). In particular, the stainless steel may be selected to withstand the environment of the enclosure in which the anchor structure is to be used. The anchoring element may thus be of austenitic stainless steel chosen from the following steels: a stainless steel containing 0.04 to 0.10% by weight of carbon, 18 to 20% by weight of chromium and 8 10.5% by weight of nickel, and with a manganese content of not more than 2% by weight, for example an AISI 304H grade steel, - a stainless steel containing from 0.04 to 0.10% by weight of carbon, from 17 to 19% by weight of chromium and from 9 to 12% by weight of nickel, and with a niobium content of 8 times the carbon content at 1% by weight, for example an AISI grade steel. 347, - a stainless steel containing not more than 0.015% by weight of carbon, 15 to 17% by weight of chromium and 33 to 37% by weight of nickel, for example an AISI 330 grade steel, - a stainless steel containing not more than 0.10% by weight of carbon, 24 to 26% by weight of chromium and 19 to 22% of nickel, for example an AISI grade 310 steel, - a stainless steel containing not more than 0.08% by weight of po carbon numbers, from 17 to 19% by weight of chromium, from 9 to 12% by weight of nickel, a titanium content of 5 times the carbon content at 0.70% by weight, a manganese content of from plus 2% by weight, a silicon content of not more than 1% by weight, for example an AISI 321 grade steel, - a stainless steel containing not more than 0.15% by weight of carbon, of 11.5 to 13% by weight , 5% by weight of chromium, a manganese content of at most 1% by weight, a silicon content of at most 1% by weight, for example an AISI grade 410 steel. Such austenitic stainless steels may allow to reduce the damage due to a loss of stainless steel by dropping the chromium content below 10.5% by weight inside the steel.
    [0010] The anchoring element according to the invention may be intended to be fixed on the metal wall without contact with another anchoring element. According to one embodiment, the upper edge of the anchoring body may then have a shape of S and the upper edge section provided with a delimiting tab may be a curved section. The delimiting tab can then be arranged substantially in the middle of the upper edge of the anchoring body. In this embodiment, the fastening edge may be part of a foot integral with the anchoring body, so that the fastening edge is remote from the anchoring edge. Such a fixing foot can also extend in the extension of the anchor body, in the middle thereof. Such an anchoring element may be made by bending a flat strip along an axis perpendicular to a longitudinal direction of the strip. Optionally, the strip may be cut beforehand to form the delimiting lug and the fixing foot, the remainder of the strip having a constant width.
    [0011] According to another embodiment, the upper edge of the anchoring body has a K shape and the upper edge section provided with a delimiting lug is a straight section. According to another embodiment, the upper edge of the anchoring body may have a hexagonal shape and said at least one portion of the upper edge provided with a delimiting tab may be part of a rectilinear side of the hexagonal shape. Preferably, the section does not then extend over the entire length of a rectilinear side.
    [0012] Advantageously, at least two opposite sides of said upper edge of hexagonal shape may be provided with a delimiting tab, which may facilitate a placement of a coating layer of uniform thickness above the anchor element thanks to the two marks formed by the opposite delimiting tabs.
    [0013] Such an anchoring element can be made by folding a flat strip along an axis perpendicular to a longitudinal direction of the strip, and then assembling the ends of the strip to form a hexagon. Optionally, the strip may be cut beforehand to form the delimiting tab. The fastening edge then also has a hexagonal shape and defines a plane distinct from the plane of the upper edge. The anchoring element according to the invention may also be intended to be fixed on the metal wall, assembled with other identical anchoring elements in order to form a honeycomb type anchoring structure. The body of said anchoring element may then be formed of a strip divided along its length into a plurality of portions, first strip portions extending in a first plane parallel to the longitudinal direction (L) of the strip, second strip portions extending in a second plane parallel to the first plane and distinct from the first plane, third strip portions each connecting a first strip portion to a second strip portion, the first and second strip portions being alternated on the entire length of the band. According to the invention, said at least one portion of the upper edge provided with a delimiting lug of each anchoring element can then be part of an upper edge of a third portion of the band that anchor element. Preferably, the section does not then extend over the entire length of the upper edge of a third portion of the strip. Advantageously, each third portion of a strip of an anchoring element may be provided with a delimiting tab, which may promote the production of a coating of composite material of uniform thickness over the entire extent of the anchoring structure. However, it can be expected that a third portion in two or three only be provided with a delimiting tab.
    [0014] Such anchoring elements can be assembled in different ways. According to a first embodiment, the first portions of a strip of an anchoring element are intended to be juxtaposed and assembled to the second portions of an adjacent strip so as to form hexagonal cells. Thus, the delimiting lug is not on a portion assembled to another anchoring element. In other words, the assembled portions of two anchoring elements are then of the same height (in a lower plane). The invention thus also relates to a honeycomb anchoring structure for anti-erosion coating on an internal or external metal wall of a fluid catalytic cracking unit enclosure formed of an assembly of the anchoring elements described herein. above, in particular of identical anchoring elements, in which the first portions of a strip of an anchoring element are juxtaposed and assembled to the second portions of a strip of an adjacent anchoring element so as to form hexagonal cells.
    [0015] According to another embodiment, each first portion contiguous to two third portions of the same anchoring element has a U-shape which is intended to be partly fitted into the U-shape of each first portion contiguous to two third portions an adjacent anchoring element so that the third portions of two adjacent anchoring elements are partially juxtaposed. These juxtaposed portions of the third portions of assembled anchoring elements are then traversed by a rod extending in the longitudinal direction of the strips of adjacent anchoring elements, the concavities of the U-shaped being directed in the same direction. Such an arrangement allows rotation of two adjacent anchoring elements around the assembly rods. The delimiting tabs could, alternatively, be provided on the upper edge of the first and second portions of an anchoring element of this type. However, for easier placement of the composite material, it is preferable that the section of the upper edge provided with a delimiting tab of each anchoring element is part of an upper edge of a third portion of the strip. said anchor element.
    [0016] The invention also relates to a honeycomb anchoring structure for anti-erosion coating on an internal or external metal wall of a fluid catalytic cracking unit enclosure formed of an assembly of the anchoring elements described above. above, in particular of identical anchoring elements, in which each first portion contiguous to two third portions of the same anchoring element has a U-shape partly nested in the U-shape of each first portion contiguous to two thirds portions of an adjacent anchoring element so that the third portions of two adjacent anchoring elements are partly juxtaposed, the concavities of the U-shaped shapes being directed in the same direction so as to form four-sided cells, these juxtaposed portions of the third portions of adjacent anchoring elements being traversed by a rod extending in the longitudinal direction (L) of the strips s adjacent anchors. An anchoring structure according to the invention may further comprise one or more of the anchoring elements previously described. It may in particular comprise a plurality of anchoring elements of different shapes, some of which may be identical to each other and possibly assembled, each anchoring element having at least one delimiting tab whose delimiting edge is located at the same distance from its top edge and bottom edge. The invention also relates to an anti-erosion coating comprising at least one anchoring element according to the invention embedded in a composite material, for example a concrete, the composite material extending to the boundary edge of said delimiting tab. , above the upper edge of said at least one anchoring element, so that the composite material covers or is flush with the delimiting edge of said delimiting tab. Interstices are thus less likely to form with such a coating, especially at the contact areas of the anchor element and the composite material or between contact zones of two anchoring elements assembled. The risk of formation of interstices, and therefore a degradation of the coating, may be reduced if the length of the delimiting tabs is small, for example less than or equal to 22 mm, preferably less than or equal to 15 mm . For the purposes of the present invention, the composite material is preferably a material resulting from an assembly of at least two immiscible materials having a high adhesion capacity. Preferably, the composite material is a composite building material such as a concrete, in particular a concrete adapted for use in a fluid catalytic cracking unit.
    [0017] The anti-erosion coating may comprise one or more anchoring elements according to the invention isolated, intended to be fixed alone in isolation on said metal wall, in other words without contact with an adjacent anchoring element.
    [0018] Alternatively or in combination, the anti-erosion coating may comprise several anchoring elements according to the invention assembled with other identical anchoring elements to form an anchoring structure, for example honeycomb. Advantageously, the anti-erosion coating may comprise a plurality of anchoring elements of different shapes, possibly in combination with a plurality of identical anchoring elements assembled, each anchoring element having at least one delimiting tab whose edge delimitation is located at the same distance from its upper edge and its lower edge. A coating of uniform thickness over the entire surface of the wall to be protected can thus be obtained. The invention also relates to an enclosure of a fluid catalytic cracking unit comprising at least one inner or outer metal wall covered with at least one coating according to the invention, the fixing edge of each anchoring element being fixed by welding on the inner or outer wall of the enclosure. Advantageously and in a nonlimiting manner, the metal wall on which the coating is applied is an internal or external wall of a cyclone, a regenerator, a disengager or any other internal equipment of a fluid catalytic cracking unit. , such as riser (riser), stripper, standpipe, smoke line, transfer line between reactor and fractionation, orifice chamber (plate chamber), slide valve (guillotine valve), withdrawal well.
    [0019] The invention finally relates to a method for producing an anti-erosion coating on an internal or external metal wall of a fluid catalytic cracking unit enclosure, comprising: (i) fixing a plurality of elements of anchoring according to the invention, optionally some anchoring elements being previously assembled to each other, on said metal wall, this fixing being carried out by welding on the metal wall of the fixing edge of each anchoring element, (ii) applying a layer of a composite material to the metal wall, the thickness of this layer being chosen so that the composite material covers or is flush with the delimiting edge of the boundary tabs of each anchoring element.
    [0020] The invention is now described with reference to the accompanying non-limiting drawings, in which: FIG. 1 is a perspective representation of anchoring elements according to an embodiment of the invention forming a nest-shaped anchoring structure; bee; Figure 2 is a sectional view along the line A-A of the anchor structure shown in Figure 1, the anchoring structure being fixed to a metal wall and embedded in a composite material; - Figure 3 is a sectional view along the line B-B of the anchor structure shown in Figure 1, the anchoring structure being fixed to a metal wall and embedded in a composite material; FIG. 4 is a perspective representation of an anchoring element according to a second embodiment of the invention; FIG. 5 is a perspective representation of an anchoring element according to a third embodiment of the invention; FIG. 6 is a perspective representation of anchoring elements according to a fourth embodiment of the invention; forming a honeycomb type anchoring structure, whose cells are four-sided. Fig. 1 partially shows a metallic honeycomb anchor structure formed of a plurality of strips 12 assembled in pairs to form a plurality of hexagonal cells 14 connected by their sides to each other. Each band 12 forms an anchoring element according to a first embodiment of the invention. By strip is meant a strip of metallic material having a width less than a length and a thickness less than the width. Preferably, the band has a constant width over its entire length, with the exception of the delimiting tabs, as will be described later. For example, the internal dimensions of the cells may vary from 4 to 6 cm for a thickness of about 1.5 to 3.0 cm, for example 2 cm. Each strip 12, made in one piece, is divided along its length into a plurality of portions 121, 122, 123: first portions 121 of strip which extend in a first plane parallel to the longitudinal direction L of the strip, second strip portions 122 which extend in a second plane parallel to and distinct from the first plane, third strip portions 123 which each connect a first band portion 121 to a second strip portion 122. Such an anchoring element 12 may be made by folding a flat strip in a direction perpendicular to its longitudinal direction (L), in the plane of the strip. The first 121 and second 122 strip portions are alternated along the length of a strip 12 and the first portions 121 of a strip are juxtaposed and assembled to the second portions 122 of an adjacent strip 12, for example by welding and / or by fixing means. The first 121 and second 122 strip portions thus form assembly portions at an adjacent strip 12. The anchoring structure 10 shown here is formed of a plurality of identical strips 12. Each band 12 has a lower longitudinal edge 12a contained in a single plane and an upper longitudinal edge 12b parallel to the lower longitudinal edge 12a.
    [0021] The lower longitudinal edge 12a forms an attachment edge of the anchoring element 12, the strip 12 itself forming an anchoring body in the sense of the invention. According to the invention, a portion of the upper edge 12b, which is not intended to be juxtaposed and assembled at an upper edge of an identical adjacent anchoring element, is provided with a delimiting tab 16 to delimit a height of composite material to cover the upper edge of the anchoring element. For this purpose, the delimiting tab 16 has a delimiting edge 18 remote from the plane defined by the upper edge 12b of the anchoring element 12 by a predetermined distance. In other words, in the present example, as shown in Figure 1, the delimiting edge 18 of the delimiting lug 16 extends parallel to the lower edges 12a and 12b upper. Figures 2 and 3 are sectional views along lines A-A and B-B of Figure 1, the same scale. In these figures, there is a wall 20, metal, on which is fixed the anchoring structure 10. This attachment is achieved by welding the fastening edge 12a on the wall 20. Figure 2 shows portions 121 and 122 assemblies of the anchoring structure. A layer 21 of composite material covers the upper edges 12b of these assembly portions 121, 122. This layer 21 extends over a height H (measured from the metal wall 20, perpendicular to it) such that the surface of the layer 21 of composite material is flush with the delimiting edge 18 of the delimiting tab 16 (FIG. 3). Thus, for a band of height h (in other words of width h), a thickness d of composite material 21 covers the upper edges 12b of the anchoring element, the total height H of the layer 21 being equal to the sum of height h and thickness d. This thickness d thus corresponds to the predetermined distance separating the delimiting edge 18 from the plane defined by the upper edge 12b of the anchoring element 12. Thus using the delimiting edges 18 of the lugs 16 to produce a thick coating predetermined, it is certain to completely cover the anchoring element 12, including its assembly portions 121, 122 and thus prevent the formation of interstices, and a layer of composite material of uniform thickness is produced. In the example, each third portion 123 is provided with a delimiting tab 16, which extends over a portion of the length of the upper edge of this third portion 123. As shown in FIG. anchoring 12 may further have a tongue of material 22 cut from at least one portion other than an assembly portion (here a portion 123) and folded to project from this portion. Such a configuration can make it possible to improve the anchoring of the composite material on the anchoring element, the tongue then being embedded in the composite material, the retention of which is also reinforced because it passes through the orifice released by the tongue folded.
    [0022] The tongues 22 of material from portions forming part of the same cell can be folded towards one another. This arrangement makes it possible to obtain two tongues bent towards the center of each cell when the strips are assembled to one another.
    [0023] These tongues 22 may also be folded so as to extend substantially parallel to the planes of the tape assembly portions.
    [0024] The anchoring structure 10 shown in FIG. 1 may be shaped before it is fastened to a metal wall, for example by rolling in order to match the shape of this metal wall. When the metal wall to be protected has a more complex shape, it may then be difficult, if not impossible, to fix an anchoring structure of the type of that described with reference to FIG. 1. It is then possible to use isolated anchoring elements. of the type described with reference to FIGS. 4 and 5, or articulated anchoring elements of the type described with reference to FIG.
    [0025] FIG. 4 represents an anchoring element 12 'according to another embodiment of the invention. The anchoring element 12 'has an anchoring body 13 whose upper edge 13b has an S shape. This anchoring body 13 is here in the form of a flat strip bent in a direction perpendicular to its longitudinal direction, in the plane of the band. The lower edge 13a of this anchoring body 13 is integral with a support leg 13c extending perpendicularly to the longitudinal direction of the strip. This support leg 13c has a fixing edge 13d, through which the anchoring element 12 'can be welded to the metal wall to be protected. According to the invention, a possibly curved section of the upper edge 13b has a delimiting lug 16 'whose delimiting edge 18' is spaced a predetermined distance from the plane defined by the upper edge 13b. The length of the delimiting tab 16 ', here the length of the possibly curved section, is preferably equal to a quarter or less of the total length of the upper edge 13b. Such an anchoring element 12 'is intended to be fixed on the metal wall without contact with another anchoring element.
    [0026] Figure 5 shows an anchoring element 12 "according to yet another embodiment of the invention.
    [0027] This anchoring element 12 "has a hexagonal shape and is obtained by folding a flat strip in a direction perpendicular to the longitudinal direction of the strip, in the plane of the strip, the ends of the strip being joined to close. The resulting structure thus forms a cell which can be filled and covered with composite material The anchoring element 12 '' has a lower edge 12 '' forming a fixing edge, by which it can be welded to a wall The folded strip itself forms an anchoring body The anchoring element 12 "has an upper edge 12" b of hexagonal shape defining a plane, according to the invention a section of the upper edge 12 "b has a delimiting lug 16" whose delimiting edge 18 "is spaced a predetermined distance d" from the plane defined by the upper edge 12 "b. Here, the anchoring element 12 "has two delimiting tabs 16" disposed on opposite edges of the hexagonal shape. These lugs 16 "are thus parallel, which can facilitate the application of the composite material The length of the delimiting lug 16", here the length of the rectilinear section, is preferably equal to half or less of the total length the upper edge 12 "B. As for the embodiment previously described, the anchoring element 12" is intended to be fixed on the metal wall without contact with another anchoring element. The presence of a delimiting tab 16 'or 16 "in these two embodiments then makes it possible to ensure that the remainder of the upper edge 13b or 12" b of the anchoring body is entirely covered with composite material, thus limiting the risk of corrosive gas infiltration between the anchoring element and the composite material, while maintaining a constant composite material height by virtue of the mark of the delimiting tab.
    [0028] FIG. 6 shows a honeycomb-type metal anchoring structure 10 formed of a plurality of anchoring elements 12 "according to yet another embodiment of the invention. of that described with reference to Figure 1, each anchoring element 12 "being formed of a strip, these strips being assembled in pairs so as to form a plurality of four-sided cells. The term "band" has the same meaning as that already given. These strips can be made as already described for the first embodiment.
    [0029] Each strip 12 ", made in one piece, is divided along its length into a plurality of portions 121", 122 ", 123": first portions 121 "of strip which extend in a first plane parallel to the longitudinal direction L of the strip, second strip portions 122 '' which extend in a second plane parallel to and distinct from the first plane, third strip portions 123 '' which each connect a first strip portion 121 '' to a strip second portion 122 "of tape, the first 121" and second 122 "portions of tape are alternated along the length of a tape 12". Here, each first portion 121 "contiguous to two third portions 123" of the same anchoring element has a U-shape which is partly fitted into the U-shape of each first portion 121 "contiguous to two third portions 123" of an adjacent anchoring element so that the third portions 123 "of two adjacent anchoring elements are partially juxtaposed, forming four-sided cavities (Figure 6) The concavities of the U-shaped shapes thus defined are all directed in the same direction These juxtaposed portions 23 of the third portions 123 "of adjacent anchoring elements are further traversed by a rod 24 extending in the longitudinal direction L of the strips of adjacent anchoring elements. An articulated anchoring structure 10 'is thus obtained, each anchoring element 12 "being pivotable relative to an adjacent anchoring element 12" by rotation around a rod 24. The anchoring structure 10' represented is Here each band 12 "has a lower longitudinal edge 12" contained in a single plane and an upper longitudinal edge 12 "b parallel to the lower longitudinal edge 12" A. The lower longitudinal edge 12 "has formed a fixing edge of the anchoring element 12", the strip 12 "itself forming an anchoring body in the sense of the invention. According to the invention, a portion of the upper edge 12 "b, which is not intended to be juxtaposed and assembled at an upper edge of an identical adjacent anchoring element, is provided with a delimiting tab 16" for defining a height of composite material to cover the upper edge of the anchoring element. For this purpose, the delimiting lug 16 "has a delimiting edge 18" distant from the plane defined by the upper edge 12 "b of the anchoring element 12" by a predetermined distance d ". 18 "of the delimiting tab 16" extends parallel to the lower edges 12 "a and upper 12" B. In the example, each third portion 123 "is provided with a delimiting tab 16", which extends over part of the length of the upper edge of this third portion 123 "not juxtaposed to a third portion 123" of an adjacent anchoring element 12 ". Such an arrangement facilitates the placement of the composite material.
    [0030] Thus, by using anchoring elements of different shape but all having a delimiting lug disposed at the same distance from their attachment edge, it is possible to achieve a coating with a constant thickness. In all the embodiments shown, the delimiting lug 16, 16 ', 16 ", 16" extends in the extension of a strip forming the anchoring body. The fixing edge may be part of this band, for example when it is a lower edge, or may be secured to the band. Advantageously, whatever the embodiment of an anchoring element, the delimiting tab or tabs are preferably made in one piece with the anchoring body, for example by cutting a strip of constant width and then placing in the form of this band, by folding or bending. In the same way, the fixing edge is advantageously integrated with the anchoring body. It will also be noted that one or more tongues, similar to the tongues 22 described with reference to the embodiment represented in FIG. 1, may be provided on the anchoring bodies of the anchoring elements described with reference to FIGS. 4 to 6 in order to to improve the anchoring of the composite material by the anchoring element.
    权利要求:
    Claims (15)
    [0001]
    REVENDICATIONS1. Metal anchoring element (12, 12 ', 12 ", 12") of an anti-erosion coating on an internal or external metal wall (20) of a fluid catalytic cracking unit enclosure, said element being intended for to be fixed alone in isolation on said metal wall or being intended to be fixed on said metal wall assembled with other identical anchoring elements, said anchoring element (12, 12 ', 12 ", 12") having a fixing edge (12'a, 13d, 12 "a, 12" a) intended to be fixed on said metal wall (20) and an anchoring body secured to the fixing edge (12'a, 13d, 12 "a , 12 "a), said anchoring body having an upper edge (12b, 13b, 12" b, 12 "b) remote from the fixing edge and intended to be covered by a concrete-type composite material, said upper edge ( 12b, 13b, 12 "b, 12" b) defining a plane, characterized in that at least one portion of said upper edge (12b, 13b, 12 "b), which is not intended for being juxtaposed and assembled at an upper edge of another identical anchoring element, is provided with a delimiting tab (16, 16 ', 16 ", 16") for delimiting a height of composite material to cover the upper edge (12b, 13b, 12 "b, 12" b) of said anchoring member, said delimiting tab (16, 16 ', 16 ", 16") having a delimiting edge (18, 18', 18 ", 18 ") distant from the plane defined by the upper edge (12b, 13b, 12" b, 12 "b) of the anchoring element by a predetermined distance (d, d ', d", d ").
    [0002]
    2. anchoring element (12, 12 ', 12 ", 12") according to claim 1, characterized in that said delimiting tab (16, 16', 16 ", 16") extends over a portion of the length of said upper edge (12b, 13b, 12 "b, 12" b).
    [0003]
    3. anchoring element (12, 12 ', 12 ", 12") according to claim 1 or 2, characterized in that the anchoring body is formed by folding or bending a flat strip along an axis perpendicular to a longitudinal direction (L) of the strip, in the plane of the strip, and that said delimiting tab (16, 16 ', 16 ", 16") extends in the extension of said flat strip perpendicularly to said direction longitudinal.
    [0004]
    4. anchoring element (12, 12 ', 12 ", 12") according to any one of claims 1 to 3, characterized in that it is austenitic stainless steel selected from the following steels: - a stainless steel containing from 0.04 to 0.10% by weight of carbon, from 18 to 20% of chromium and from 8 to 10.5% of nickel, and with a manganese content of not more than 2% by weight; stainless steel containing 0.04 to 0.10% by weight of carbon, 17 to 19% of chromium and 9 to 12% of nickel, and with a niobium content of 8 times the carbon content at 1% by weight, - a stainless steel containing not more than 0.015% by weight of carbon, 15 to 17% of chromium and 33 to 37% of nickel, - a stainless steel containing not more than 0.10% by weight of carbon, of 24 to 26% of chromium and 19 to 22% of nickel, - a stainless steel containing not more than 0.08% by weight of carbon, 17 to 19% by weight of chromium, 9 to 12% by weight of nickel , a titanium content of 5 times the carbon content at 0.70 % by weight, a manganese content of not more than 2% by weight, a silicon content of not more than 1% by weight, - a stainless steel containing not more than 0.15% by weight of carbon, of 11.5% to 13.5% by weight of chromium, a manganese content of at most 1% by weight, a silicon content of at most 1% by weight.
    [0005]
    Anchoring element (12 ') according to any one of claims 1 to 4, intended to be fixed on the metal wall (20) without contact with another anchoring element, characterized in that the upper edge ( 13b) of the anchoring body has a shape of S and that the section of the upper edge (13b) provided with a delimiting tab (16 ') is a curved section.
    [0006]
    6. anchoring element (12 ') according to claim 5, characterized in that said delimiting tab (16') is disposed substantially in the middle of the upper edge (13b) of the anchoring body.
    [0007]
    7. anchoring element (12 ") according to any one of claims 1 to 4, intended to be fixed on the metal wall (20) without contact with another anchoring element, characterized in that the upper edge ( 12 "b) of the anchoring body has a hexagonal shape and in that said at least one portion of the upper edge (12" b) provided with a delimiting tab (16 ") is part of a straight side of the hexagonal shape.
    [0008]
    8. anchoring element (12 ") according to claim 7, characterized in that at least two opposite sides of said upper edge of hexagonal shape are provided with a delimiting tab (16").
    [0009]
    Anchoring element (12) according to any one of claims 1 to 4, intended to be fixed on the metal wall assembled to other identical anchoring elements in order to form an anchoring structure (10) in honeycomb, the anchor body being formed of a strip divided along its length into a plurality of portions (121, 122, 123), first portions (121) of strip extending in a first plane parallel to the longitudinal direction (L) of the strip, the second strip portions (122) extending in a second plane parallel to the first plane and distinct from the first plane, the third strip portions (123) each connecting a first portion (121) ) of web to a second web portion (122), the first and second web portions (121, 122) being alternated along the entire length of the web (12), said anchoring member being characterized in that said at least one portion of the upper edge (12b) provided with a leg delimiting member (16) is part of an upper edge (12b) of a third portion (123) of said band.
    [0010]
    10. anchoring element (12, 12 ', 12 ") according to claim 9, characterized in that each third portion (123) of said strip is provided with a delimiting lug (16).
    [0011]
    Anchoring structure (10) for anti-erosion coating on an inner or outer metal wall (20) of a fluid catalytic cracking unit enclosure formed of an assembly of anchoring elements (12) according to the invention. any one of claims 9 or 10, wherein the first portions (121) of a strip of an anchor are juxtaposed and joined to the second portions (122) of a strip of an adjacent anchor to form hexagonal cells (14).
    [0012]
    Anchoring structure (10 ') for anti-erosion coating on an inner or outer metal wall (20) of a fluid catalytic cracking unit enclosure formed of an assembly of anchors (12 ") according to any one of claims 9 or 10, wherein each first portion (121 ") contiguous to two third portions (123") of the same anchoring element (12 ') has a U-shape partly embedded in the U-shape of each first portion (121 ") contiguous to two third portions (123") of an adjacent anchoring element so that the third portions (123 ") of two adjacent anchoring elements are partially juxtaposed the concavities of the U-shaped shapes being directed in the same direction so as to form four-sided cells, these juxtaposed portions (23) of the third portions (123 ") of adjacent anchoring elements being traversed by a rod (24); ) extending in said longitudinal direction (L).
    [0013]
    13. Anti-erosion coating characterized in that it comprises at least one anchoring element (12, 12 ', 12 ", 12") according to any one of claims 1 to 12 embedded in a composite material (21), for example a concrete, the composite material (21) extending to the delimiting edge of said delimiting tab, above the upper edge of said at least one anchoring element (12, 12 ', 12 ", 12" ), so that the composite material covers or is flush with the delimiting edge of said delimiting tab.
    [0014]
    14. Enclosure of a fluid catalytic cracking unit characterized in that it comprises at least one inner or outer metal wall (20) covered with at least one coating according to claim 13, the fixing edge (12a, 13d, 12 "a, 12" a) of each anchoring element (12, 12 ', 12 ", 12") being welded to the inner or outer wall (20) of the enclosure.
    [0015]
    A method of making an anti-erosion coating on an inner or outer metal wall (20) of a fluid catalytic cracking unit enclosure, comprising: (i) attaching a plurality of elements of anchorage (12, 12 ', 12 ", 12") according to any one of claims 1 to 10 on said metal wall (20), this fixing being carried out by welding on the metal wall of the fixing edge (12a, 13d, 12 "a, 12" a) of each anchoring element, - (ii) applying a layer of a composite material (21) to the metal wall (20), the thickness of this layer being chosen so that the composite material covers or outcrops the bounding edge (18, 18 ', 18 ", 18") of the bounding tabs of each anchor member (12, 12', 12 ", 12").
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    同族专利:
    公开号 | 公开日
    US20180320974A1|2018-11-08|
    RU2680037C2|2019-02-14|
    RU2017118959A|2018-12-07|
    CN107073428A|2017-08-18|
    JP2018502933A|2018-02-01|
    US20170321962A1|2017-11-09|
    FR3028307B1|2021-05-21|
    RU2017118959A3|2018-12-07|
    EP3215264A1|2017-09-13|
    KR20170078618A|2017-07-07|
    CN107073428B|2021-07-06|
    US10048006B2|2018-08-14|
    US10145613B2|2018-12-04|
    WO2016071305A1|2016-05-12|
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    法律状态:
    2015-10-23| PLFP| Fee payment|Year of fee payment: 2 |
    2016-05-13| PLSC| Publication of the preliminary search report|Effective date: 20160513 |
    2016-10-24| PLFP| Fee payment|Year of fee payment: 3 |
    2017-10-20| PLFP| Fee payment|Year of fee payment: 4 |
    2018-10-24| PLFP| Fee payment|Year of fee payment: 5 |
    2019-10-22| PLFP| Fee payment|Year of fee payment: 6 |
    2020-10-21| PLFP| Fee payment|Year of fee payment: 7 |
    2021-11-22| PLFP| Fee payment|Year of fee payment: 8 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1460778A|FR3028307B1|2014-11-07|2014-11-07|ANCHORING ELEMENT OF AN ANTI-EROSION COATING ON AN INTERNAL WALL OF AN FCC UNIT ENCLOSURE.|FR1460778A| FR3028307B1|2014-11-07|2014-11-07|ANCHORING ELEMENT OF AN ANTI-EROSION COATING ON AN INTERNAL WALL OF AN FCC UNIT ENCLOSURE.|
    JP2017519271A| JP2018502933A|2014-11-07|2015-11-03|Elements for fixing the anticorrosion coating to the inner wall of the FCC unit chamber|
    KR1020177010359A| KR20170078618A|2014-11-07|2015-11-03|Element for anchoring an anti-erosion coating to an inner wall of a chamber of an fcc unit|
    CN201580059767.4A| CN107073428B|2014-11-07|2015-11-03|Element for anchoring an erosion-resistant coating to the inner wall of a chamber of an FCC unit|
    RU2017118959A| RU2680037C2|2014-11-07|2015-11-03|Element for anchor fastening of an anti-erosion coating on an inner wall of a fluid-catalytic cracking unit|
    PCT/EP2015/075515| WO2016071305A1|2014-11-07|2015-11-03|Element for anchoring an anti-erosion coating to an inner wall of a chamber of an fcc unit|
    EP15788416.4A| EP3215264A1|2014-11-07|2015-11-03|Element for anchoring an anti-erosion coating to an inner wall of a chamber of an fcc unit|
    US15/524,820| US10048006B2|2014-11-07|2015-11-03|Element for anchoring an anti-erosion coating to an inner wall of a chamber of an FCC unit|
    US16/036,573| US10145613B2|2014-11-07|2018-07-16|Element for anchoring an anti-erosion coating to an inner wall of a chamber of an FCC unit|
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