巴西专利BR112013002745B1 METHOD FOR COAL COMPACTING FOR A COAL COOKING PROCESS

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公开号:BR112013002745B1
申请号:R112013002745-2
申请日:2011-08-01
公开日:2018-06-26
发明作者:Michael P. Barkdoll；Richard C. Retort；John Sanor
申请人:Suncoke Technology And Development Llc；
IPC主号:

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(54) Title: METHOD FOR THE COMPALATION OF COAL FOR A PROCESS OF
COAL COKEIFICATION (51) Int.CI .: C10B 31/00; C10B 31/08; F27D 3/06 (30) Unionist Priority: 08/03/2010 US 12 / 849,192 (73) Holder (s): SUNCOKE TECHNOLOGY AND DEVELOPMENT LLC (72) Inventor (s): MICHAEL P. BARKDOLL; RICHARD C. RETORT; JOHN SANOR
1/17 “METHOD FOR COMPACTING COAL FOR A COAL COOKING PROCESS”
TECHNICAL FIELD [001] The specification refers to a method and apparatus for the production of coke from coal and, in particular, an improved method and apparatus aimed at compacting the coal for supply by an oven of coking without recovery.
BACKGROUND AND SUMMARY [002] Coke consists of a solid coal-based fuel and a carbon source used for smelting and reducing iron in steel production. During the iron production process, iron ore, coke, heated air and limestone or other types of flux are fed to a blast furnace. The heated air causes the coke to burn, providing heat and with a carbon source for the reduction of iron oxides in iron. Limestone or other types of fluxes can be added to react and remove acidic impurities, called slag, from cast iron. The limestone impurities float on top of the cast iron and are scraped away.
[003] In a type of process, known as the Thompson Coking Process, the coke used for the refining of metal ores, as described above, comes to be produced by means of batch feeding with pulverized coal next to an oven which is sealed and heated to very high temperatures for 24 to 48 hours under precisely controlled atmospheric conditions. Coke ovens have been used for many years to convert coal into metallurgical coke. During the coking process, the finely ground coal is heated under controlled temperature conditions until its devolatilization, forming a melt with a predetermined porosity and strength. Because coke production consists of a batch process, multiple coking ovens are operated simultaneously, hereinafter referred to as a battery of coking ovens.
[004] At the end of the coking cycle, the resulting coke is removed from the oven and cooled with water. The cooled coke can be sieved and loaded with railroad cars or trucks for later shipment or directly transferred to an iron melting furnace.
[005] The process of melting and melting through the coal particles during the heating process comprises the most important part of the coking process. The degree of melting and the degree of assimilation of the coal particles in the
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2/17 melt determines the characteristics of the coke produced. In order to generate the most fortified coke from a particular coal or a mixture of coal, there is an optimal reaction rate for inert components in the coal. The porosity and strength of the coke are important for the ore refining process and are determined by the coal source and / or the coking method.
[006] The coal particles or the mixture of coal particles are loaded into the thermal ovens within a predetermined schedule, with the coal being heated for a predetermined period in the ovens in order to remove the volatile components arising resulting coke. The coking process is highly dependent on the oven model, the type of coal and the conversion temperature used. The ovens are adjusted during the coking process so that each load of coal has the coke extracted in approximately the same amount of time. Once the coal goes through the coking process, the coke is removed from the oven and cooled with water to cool it to a temperature below its ignition temperature. The rapid cooling operation must be controlled very carefully, so that the coke will not absorb much moisture. Once the cooling occurs, the coke is sieved and loaded with a railroad car or trucks for proper shipment.
[007] Because the coal is fed in thermal ovens, much of the coal feeding process is automated. In ovens with oval openings, coal is typically loaded through slits or openings in the top of the ovens. Such ovens tend to be tall and narrow. More recently, coking ovens of the types containing or not thermal restoration have been used for the production of coke. Horizontal ovens are described, for example, in U.S. Patent Documents No. 3784034 and 4067462 to Thompson. In coking ovens of the type with or without thermal restoration, conductors are used to transport the coal particles horizontally inside the ovens to provide an elongated bed of coal with an elevation of around 101 centimeters, a length of around 13 , 7 meters, and a width of around 3.6 meters.
[008] As a suitable source of coal for the formation of metallurgical coal, there has been a decrease in the use of coal, attempts have been made to mix coals without coke or low levels with coals with coke to provide a load of charcoal suitable for ovens. One attempt is to make use of compacted coal. The coal can be compacted before or after being placed in the oven. While the coal conductors mosPetição 870170100759, of 12/21/2017, p. 13/30
3/17 they are suitable for loading in ovens with the particulate coal being partially compacted in the oven, such conductors, as a rule, are not very suitable for loading in ovens with pre-compacted coal. Ideally, coal should be compacted to a level higher than 800 kilograms per cubic meter in order to increase the usable capacity of lower quality coal. It is well known that as the percentage of the lowest quality coal present in a coal mixture is reduced, higher levels of coal compaction are needed up to around 1040 to 1120 kilograms per cubic meter.
[009] However, the processes currently available are not suitable for the provision of a compacted coal load that has a substantially uniform volumetric density over an entire depth of an elongated coal load bed at a relatively high rate of speed. and without the generation of substantial amounts of dust from coal during compaction. There is a need for an improved method and apparatus for compacting coal without generating coal dust and loading coking ovens with pre-compacted coal. There is still a need for an apparatus designed to minimize the amount of time required to supply a substantially uniform bed of compacted coal for use in the production of metallurgical coke.
[010] In accordance with the previous exposure and other needs, the report provides with high speed methods for increasing the volumetric density of the coal particles without impacting the coal particles and an apparatus for compacting the coal next to an external charging plate in a coking oven. The loading plate has side walls, and at least one movable end wall to provide with an elongated bed of dry, non-compacted coal having a top surface next to the loading plate. Non-compacted coal is compacted by passing a vibrating cylindrical compactor along a length of the non-compacted coal by a handful of passages sufficient to decrease the thickness of the coal bed to below 80 percent of the original thickness. of non-compacted coal. The vibrating cylindrical compactor has a length to diameter ratio ranging from around 1.4: 1 to around 2: 1. In another aspect, an example form of the specification provides with a coke oven loading apparatus and coal compaction. The apparatus has a coal bed transfer plate containing side walls,
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4/17 at least one movable end wall, and a transfer plate translation mechanism for transporting compacted coal inside the coking oven. A vacuum source is used for the degasification of the non-compacted bed of coal during the compaction process providing with a bed of compacted, dry coal incorporating a volumetric density of around 960 to around 1200 kilograms per cubic meter.
[011] In yet another aspect, an example of the report provides an apparatus for loading in a coke oven and coal compaction. The apparatus includes a coal bed loading trolley comprising a transfer plate containing at least one side wall with a movable end wall, and a transfer plate translation mechanism for transporting compacted coal into the furnace. coking. A coal compacting device is provided to compact the coal without impact energy. The coal compacting device includes a vibrating roller mechanism for compacting a bed of non-compacted coal on the transfer plate; a coal bed translation device attached to the vibrating roller mechanism for moving the vibrating roller mechanism along a length of the non-compacted coal bed; a lifting mechanism next to the translation device of the coal bed lowering the vibrating roller so that it comes into contact with the non-compacted coal during a compacting stage and suspending the vibrating roller which is out of contact with the compacted coal during a stage oven loading; and a degassing device for degassing the non-compacted coal bed during the compaction stage.
[012] The method and apparatus described in this report provide unique advantages for coking operations, including the provision of coal with a relatively high volumetric density in a relatively short period and time. Another advantage of the method and apparatus is that relatively simple mechanical devices can be used for compaction of the coal and transfer of this compacted coal into the coking oven using a piling-type compaction device which can cause an increase in dust of coal during compaction and can lead to damage to structures and equipment during the compaction process. An additional advantage comprises that the resulting coal bed will be substantially compacted along its depth, presenting around the same uniform volumetric density.
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5/17
BRIEF DESCRIPTION OF THE DRAWINGS [013] Additional advantages of the described modalities can be evidenced by reference to the detailed description of the example modalities when considering the set of drawings, which are not to scale, where the reference characters represent similar elements or related through the various drawings:
Fig. 1 consists of a plan view, not being to scale, of a loading car, a coal filling plant, and a compacting apparatus, and a loading car device according to one embodiment of the specification;
Fig. 2 consists of a side view in elevation, not to scale, of the coal filling plant, compacting apparatus, and loading cart device according to a description of the description;
Fig. 3 consists of a view of the elevated end, not being to scale, of the loading carriage device and coal filling plant according to one embodiment of the specification;
Fig. 4 consists of a schematic side view, not being to scale, of the loading carriage device according to an embodiment of the specification;
Fig. 5 consists of an elevation view of the end, not to scale, of a loading cart device according to one embodiment of the specification;
Fig. 6 consists of an elevation view, not to scale, of the loading trolley device and side wall locking mechanism according to an embodiment of the specification;
Fig. 7 consists of an elevation view, not to scale, of a portion of the loading cart device and movable end wall for loading a coking oven according to a description of the specification;
Fig. 8 consists of a perspective view, not to scale, of an adjustable end wall for a loading cart device according to the specification;
Figs, 9A-9B comprise schematic views, not to scale, of a method aimed at compacting coal using a vibrating roller according to an embodiment of the invention;
Fig. 10 consists of a side elevation view, not being to scale,
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6/17 of the compaction center and loading cart according to the specification;
Figs. 11A-1D comprise perspective and side views, not being to scale, of a compacting device containing the vibrating roller according to the specification;
Fig. 12 consists of a plan view, not to scale, of the coal compaction device and the loading cart according to the specification; and Fig. 13 consists of a graphical representation of the volumetric density as a function of the compaction energy for a vibration roller compaction test according to the specification.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [014] The use of the term pile driver device is provided by this specification to represent a relatively high power impact per unit time in a reciprocating manner for coal compaction. Coal dust is generated during the compaction process with the pile driver due to the relatively high impact energy and relatively high speed of the compaction mechanism as the air is forced out of the coal. The term "vibrating roller mechanism" means a roller mechanism that vibrates without impinging impact energy from a pile driver to the coal, as described above. Accordingly, the energy per unit time of the vibrating roller mechanism is substantially less than the energy per unit time of the pile driver devices.
[015] As described in more detail below, a high-speed system 10 for the compaction and loading of coal next to the coking ovens 12 is shown in a flat view in Fig. 1. The system includes a trolley device. mobile coal loading 14, a coal filling apparatus 16 for filling a coal loading cart, and coal compacting apparatus 18 for compacting the coal in the coal loading cart device 14. System 10 makes if particularly suitable for the provision of a compacted bed of coal having a depth ranging from around 75 to around 125 centimeters, a length ranging from around 10 to around 15 meters and a width ranging from around 2 to around 5 meters for loading a coking oven without horizontal recovery 12.
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7/17 [016] With reference to Figs. from 1 to 3, there is a battery of typical horizontal non-recovery coking ovens containing a plurality of side-by-side coking ovens 12. Each of the coking ovens 12 has a charcoal end 10 and an end of coal coke outlet 22 opposite loading end 20. A coal coking cycle can span 24 to 48 hours or more depending on the size of the coal charge next to the coking oven 12. At the end of the coking cycle, the coke is driven out of furnace 12 towards a thermal carriage at the outlet end of coke 22 of the furnace using a discharge ram positioned adjacent the loading end 20 of furnace 12. The discharge ary may be included in the loading carriage device 12 which may also include a device for removing an oven door at the loading end to propel the coke out of the oven 12.
[017] As shown in Fig. 1, the loading carriage device 14 is moved on the rails 24 adjacent to oven 12, being loaded and directed to a filling center 26 for filling the loading carriage device 14 with an amount predetermined coal. The coal filling apparatus 16, described in greater detail below, includes a coal bin being moved on the elevated rails 30 orthogonal to the rails 24 for movement along a length of the loading carriage device 14 for filling the filling apparatus. coal 16 with a predetermined amount of coal through a conductor 32 (Fig. 3). The compacted coal 34 in the loading carriage 14 after leaving the filling center is still shown in Fig. 3.
[018] With reference now to Figs. 4 through 6, various aspects of the system 10 components are illustrated and described in greater detail. As shown in Fig. 4, the loading cart device 14 includes a main support structure 40, and a height adjustment mechanism 42 attached to the structure 40 for positioning a height of the transfer plate 38 in relation to a floor. from oven to an oven 12 being loaded with coal. The height adjustment mechanism 42 can also be used to lower the transfer plate 40 to the stationary pilasters, described in more detail below, for absorbing vibrations during the coal compaction stage.
[019] The height adjustment mechanism 42 includes one or more actuators 44 for suspension and lowering of the support rails 46 containing the support rollers 48 or sliding plates for movement with translation of the plate.
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8/17 transfer 38. Actuator 44 can be selected from a wide variety of mechanisms such as helical gears, chain drives, hydraulic cylinders, and the like. A hydraulic cylinder actuator 44 is particularly suitable for use in the height adjustment mechanism 42 described in this report.
[020] Details of the portions of the height adjustment mechanism 42 for the suspension and lowering of the transfer plate 38 are provided in Fig. 5. Fig.5 consists of an end view of the loading carriage device 14 showing the height adjustment mechanism 42 attached to the frame 36. The actuator 44 is attached to the frame 36 and next to a first articulation arm 50 retaining the wheel 52. The first articulation arm 50 is articulated mechanically, using a rod or another type of rigid connection device 54, next to a remote articulation arm 56 and the wheel 57 that moves together with the first articulation arm 50 by means of the connection device 54. Each of the arms, the first articulation arm 50 and the remote articulation arm 56 are articulated to the structure 36.
[021] By means of the actuator 44, the articulation arms 50 and 56 are suspended or lowered, raising or lowering the rails 46, supporting the transfer plate 38. The wheels 52 allow the movement of the rails 46 and the plate transfer for approaching or moving away from oven 12, as appropriate positioning is required for the loading cart device 14 in relation to loading being carried out in oven 12.
[022] Depending on the height differences of the oven in relation to a reference height of the rails 24. the height adjustment mechanism 42 can be used to provide a desired elevation for the transfer plate 38 for inward translation movement of oven 12 to be loaded with coal. Variations in oven height typically range from around one to five inches. Consequently, the height adjustment mechanism 42 must be able to move and retain the transfer plate 38 next to an elevation that can vary around a range ranging from 2.5 centimeters to 15 centimeters from an elevation of transfer plate reference 38. It should be noted that the range of height increases required for a particular battery of ovens can range from more than about 2.5 to about 15 centimeters. In addition to adjusting the height of the transfer plate 38, the transfer plate 38, the support rails 46, and the support rollers 48 can be extended in relation to the oven 12 for loading the oven and displacing the oven for movement 870170100759, of 12/21/2017, p. 19/30
9/17 the loading car device along the rails 24, while clearing the other oven structures. A separate actuator can be used to move the rails 46 and the transfer plate 38 for approaching and removing the oven 12.
[023] The frame 36 of the loading carriage device 14 includes wheels 58 for positioning the loading carriage 14 along the rails 24 to the vicinity of the coal loading end 20 of the furnace 12 to be loaded with the compacted coal. The wheels 58 still provide conditions for the loading carriage device 14 to be positioned next to the coal loading central 26, as described in greater detail below.
[024] The tilting side walls 60 are provided along a length of the transfer plate 38. The tilting side walls 60 can be rotated from the compacted carbon in the transfer plate 38 when the transfer plate 38 and the compacted coal in the they are being moved into the oven 12. The rotation of the tilting sidewall 60 in addition to the compacted coal can provide with a reduction in friction between the sidewalls 60 and the compacted coal.
[025] As shown in Fig. 6, the tilting side walls 60 are hinged adjacent to one of their first ends 62 next to the wall support components 64 and can be released from contact with the compacted coal or locked with impeded movement as shown and described. The locking mechanisms 66A and 66B can be used in conjunction with the tilting side walls 60 preventing the tilting side walls 60 from moving during a coal compaction process. Each locking mechanism 66A and 66B includes a pivot arm 68 having a roller 70 adjacent to a first end 72 thereof and an actuator mechanism 74 adjacent to a second end 76 thereof. Locking mechanism 66A is shown in a first unlocked position, while locking mechanism 66B is shown in a second locked position in Fig. 6.
[026] At least one end 77 (Fig. 7) of the loading cart device 14 includes a movable end wall 78 and a ram front part 80 attached to the opposite sides of a return stop device 82 as shown in greater detail. details in Fig. 7. The return stop device 82 containing the movable end wall 78 and the front of the ram 80 can be turned in a downward position for loading coal and compacting it on the transfer plate 38. When the return stop device 82
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10/17 is rotated in the up position, as shown in Fig. 7, the transfer plate 38 and the compacted coal 34 in it can be transported inside the oven 12 for loading.
[027] During the furnace loading step, the return stop device 82 (Fig. 7) containing a ram front part 80 can be rotated upwards by means of actuator 84 so that the compacted coal 34 will be moved into oven 12. Once the oven 12 is loaded with compacted coal 34, the return stop device 82 can be rotated downwards by means of the actuator 84, and can be moved towards the oven, by the trolley mechanism 86 positioning the front part of the ram 80 inside the oven 12 adjacent to the compacted coal 34 retaining the compacted coal 34 in the oven 12. After the transfer plate 38 has been removed from the oven 12, the return stop device 82 is rotated upwards and then moved using the trolley mechanism 86 to the position shown in Fig. 7.
[028] An opposite end of the transfer plate 38 includes an end wall 88 that can be moved vertically or remain stationary. In one embodiment, the end wall 88 can be adjusted up or down by releasing an extendable drain 104 in the carbon filling apparatus 16. The details of the adjustable end wall 88 are shown in Fig. 8. The adjustable end 88 has a stationary section 90 attached to the frame 36 and a movable section 92 which can be suspended and lowered by an actuator mechanism 94.
[029] The transfer plate 38 can be moved into and out of oven 12 using a combination of a chain and sprocket system 96 at high speed for heavy tasks containing a chain connected to a far end 98 of the transfer plate 38 for moving the transfer plate 38 along the support rollers 48 fixed next to the support rails 46 (Fig. 4). during a coal loading operation, the chain and sprocket system 96 moves a portion of the transfer plate 38 into the oven 12 so that compacted coal 34 can be deposited on a floor surface of the oven upon retraction of the transfer plate 38 of the oven 12. The transfer plate 38 has a thickness, typically ranging from around 3.5 centimeters to about 8 centimeters, being preferably formed from molten steel.
[030] In the case of the compacted coal loading device described in U.S. Patent No. 6290494 to Barkdoll and No. 7497930 to Barkdoll and
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11/17 employees, the descriptive parts of these documents are incorporated in this report as references, with the loading cart device 14 presently described and may optionally include a chamber for non-compacted coal providing with an insulating layer of non-compacted coal between the transfer plate 38 and the oven floor as the transfer plate 38 moves into the oven 12. The layer of non-compacted coal can isolate the transfer plate 38 from the heat radiating from the oven floor and can provide a relatively flat level surface for moving transfer plate 38 into and out of oven 12. The weight of compacted coal 34 and transfer plate 38 is sufficient to compress non-compacted coal by increasing the density above that of non-compacted coal.
[031] Referring again to Figs 2 and 3, the carbon filling apparatus 16 for filling the loading carriage device 14 is illustrated and discussed in greater detail. The coal filling apparatus 16 includes an elevated rail structure 100 for the rails 30 and a weight bin 102 (a) being movable in a substantially orthogonal direction to the rails 24 for filling the substantially uniform loading carriage device 14 with a predetermined amount of coal. The rails 30 still provide conditions for the weight bin 102 (b) to be positioned adjacent to a coal storage bin by refilling the weight bin 102 (b) with a predetermined amount of coal. The transverse conductor 32 provides a flow of coal from the storage bin to the weight bin 102. The weight bin 102 is spacious enough to hold around 50 to 60 metric tons of coal particles.
[032] An extendable drain and leveling device 104 is provided next to a discharge end of the weight bin 102 to substantially uniformly fill the loading carriage device 14 with non-compacted coal. As the weight bin 102 (a) crosses from end to end of the loading carriage device 14 along the tracks 30, the coal is gauged inside the loading carriage device 14 and planed to provide a substantially flat surface for the compaction process. The extendable drain has a profile that provides a bat wing profile through a transfer plate depth 38. The expression bat wing profile means that a depth of non-compacted coal adjacent to the side walls 60 is greater than
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12/17 a depth of coal over a substantial portion of the width of the transfer plate 38.
[033] The charcoal suitable for the formation of metallurgical coke is typically in raw form so that at least about 80% assumes an average size of around 3 millimeters as determined by standard analytical screening procedures. Non-compacted coal can still have a moisture value ranging from around 6 to about 10 percent by weight and a volumetric density ranging from around 640 to around 800 kilograms per cubic meter. As deposited on the transfer plate 38, non-compacted coal typically represents around 50 to 60 percent by volume of coal particles and around 40 to about 50 percent by volume of voids.
[034] After filling the loading carriage device 12 with a predetermined amount of coal, typically around 45 to around 55 metric tons of coal, the weight bin 102 (a) is moved to position 102 (b) (Fig. 2) in order to conduct a compaction step for the compaction of coal. The compaction device 18 used for compacting the coal includes the compacting apparatus 110 for the prompt compaction of the coal in the loading carriage 14, illustrated schematically in Figs. 9A and 9B. The compaction device 18 includes a vibrating roller 112 which rolls through the non-compacted coal 114 providing with compacted coal 134 changing the carbon depth from an initial DJ depth to the compacted depth (D2).
[035] The compacting apparatus 110 is movable in a support system 116 which includes fixed rails 118 and mobile rails 120 (Figs. 2 and 10). Once the loading trolley 14 is loaded with coal, the movable rails 120 are lowered in a point-like manner extended adjacent to both sides of the loading trolley 14 next to the extendable rails 120 as shown in Figs. 10 and 12.
[036] As shown in Figs. 11A to 11D, the compaction apparatus 110 includes a support structure 122 which is movable on the fixed rails 118 and on the extendable rails 120. The support structure 122 further includes a roller structure 124 which can be suspended as shown in Figs. 11A and 11C or lowered as shown in Figs. 11B and 11D by means of actuator devices 126. When the compaction apparatus 110 is in the suspended position, the compaction apparatus 110 can be moved above the non-coal coal Petition 870170100759, of 12/21/2017, p. 23/30
13/17 compacted 114 in the loading trolley 14. During the compacting process, the compacting apparatus 110 is in the lowered position for vibratory rolling over the non-compacted coal 114 in order to compact the coal.
[037] A plan view of the compacting apparatus 10 in relation to the loading trolley 14 is shown in Fig. 12. Non-compacted coal is disposed in the loading trolley 14 while the compacting apparatus 110 crosses a length of the trolley. load 14 during the compaction process. The coal can be compacted from about 2 to about 6 passes of the compacting apparatus 110. In one embodiment, the compacting apparatus 110 can make a first pass in the direction of arrow 130 desirably while the vibrating roller 112 is located vibrating to compact the coal. Typically, around four passages in total are necessary for the compaction of coal to the desired volumetric density for use in coking ovens 12 where a first pass is conducted without vibration and, subsequently, three passages are conducted with vibration.
[038] As shown in Fig. 9A, a length L of vibrating roller 112 can range from about 90 to about 99 percent of a width W of a bed of non-compacted coal 114 to be compacted and a ratio of length per diameter ranging from around 1.4: 1 to around 2: 1. The vibrating roller 112 can have a total weight of around 25 to around 60 metric tons and traverse the non-compacted coal at a speed ranging from around 0.5 to around 3.0 kilometers per hour during the process compaction. Vibrating roller 112 has a vibrating frequency ranging from around 10 to around 50 Hz with an amplitude ranging from around 1 to around 5 mm and a centrifugal force ranging from around 3000 to 3600 Newton-meters.
[039] During the compaction process, the air coming from the uncompressed coal 114 can be vented through the vents 136 in the side walls 60 of the loading car (Fig. 4). Air ventilation or coal degassing allows for faster compaction of coal 114. Vents 136 may consist of a 36 cm ² wire mesh or may consist of perforated mesh vents spaced at a distance from each other around 60 cm, center to center, along the side walls 60 of the loading cart 14. The vents 136 have openings between the adjacent wires ranging from around 75 to about 230 microns in order to minimize the amount of carbon retained in the air vents during the compaction process.
[040] Vents 136 can be vented to the atmosphere, or can
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14/17 to be connected in gaseous flow communication with a vacuum pump and a dust collection system 108 (Fig. 2), as described in more detail in U.S. Patent No. 7497930 to Barkdoll and collaborators, whose descriptive part is incorporated in this report as a reference. During the compaction process, the vacuum pump can apply a vacuum ranging from about 185 to about 280 mm Hg in the probes to remove air trapped in the non-compacted coal bed during the compaction process. The volumetric flow rate of gas during the compaction process ranges from around 50 cubic meters per minute to around 85 cubic meters per minute.
[041] Unlike the use of impact energy for coal compaction, vibrating roller 112 does not generate a significant amount of dust during the compaction process, since the vibratory energy per unit of time used is significantly less than an impact energy per unit of time required to reach similar volumetric coal densities with the use of a pile driver. For example, an impact pile driver, as described in US Patent Document No. 7497930, can apply an energy of around 221208 kilograms strength meter / second to the coal providing a volumetric density ranging from around 1040 to 1120 kilograms per meter cubic. The same volumetric density can be obtained with the vibrating roller 112, according to the modalities of the description with the power going from around 2 to around 5 kilograms-force meter / second. Consequently, there is no need for a dust collection system containing vibrating roller 112, whereas it is desirable to use a dust collection system with a compaction system that makes use of impact energy for the compaction of coal. However, the use of a vacuum pump during the compaction process may be desirable in order to reduce the moisture content of the coal, requiring less energy for the coking of the coal.
[042] In order to reduce shock waves from being transmitted through wheels 58 and rails 24, the support pillars 134 (Fig. 4) can be provided to support the loading carriage 14 in the filling center 26 during the compaction process. Consequently, the height adjustment mechanism 42 can be operated to lower the loading trolley 14 from around 2 to about 6 centimeters so that the support structure of the transfer plate 40 (Fig. 4) of the loading trolley 14 will be supported mainly by pillars 134 instead of wheels 58 and structure 36.
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15/17 [043] The compaction apparatus 18 described above may be sufficient to compact a coal bed with an initial depth ranging from around 135 to around 145 centimeters for a volumetric density greater than around 800 kilograms per cubic meter in less than six minutes, and typically less than around four minutes. The compacting apparatus 18 described in this report can provide with a substantial uniformity of compacted coal across the depth of the coal bed. The prior art compaction processes typically provide with non-uniform compaction of coal across the depth of the coal bed.
[044] Typical cycle times are provided for filling the loading car 14 with around 52 metric tons of coal and compacting the coal to a target volumetric density of around 1040 kilograms per cubic meter in the table below.
Table 1
Step No. Step Description
Time (seconds)
Extend Car10 Filling Drains go in the Car
Load Coal-Filled Car (14m and 45m in length)
Retract Car10 Fill Gap Extendable Extend
Moving the Compaction Device Over the ₂₅ Loading Car
Lower the Vibrating Roller Near the Bed
coal
Moving the Vibrating Roller on the Carbed190 span
Retract the Vibrating Roller from the Bed
coal
Total Time 310 [045] It should be noted that the entire process of filling and compacting coal using the vibrating roller and the degassing system described above can be achieved in less than six minutes for the amount of carPetition 870170100759, 21 / 12/2017, p. 26/30
16/17 span non-compacted and for the volumetric density provided in this example.
[046] In the following example, a compacting test was conducted for twenty-eight metric tons of coal to determine the depth and volumetric density resulting from compacted coal after multiple impacts of uncompressed coal on the bed, while ventilating the bed air of coal through the use of vents, according to the description above for the degassing of coal during the compaction process. The bed of non-compacted coal was positioned between concrete barriers next to a path bed. Multiple passes of a vibrating roller were used, applying 220 kilogram-force meters per metric ton of coal. The results are shown in the table below and in Fig. 13.
Table 2
Activity Depth of Coal (cm) Volumetric density (kg / m ³ ) Coal between concrete barriers 123 825 After passing the first roller 102 995 After passing the second roller 99 1021 After passing the third and fourth rollers 94 1076 After passing the fifth and sixth rollers 94 1076
[047] In the description that follows, all the equipment, with the exception of conveyor belts, electrical components and the like, can be made of forged or cast steel. Consequently, there is the possibility of a robust construction of the appliance, providing with a appliance of relatively long durability, which is suitable for the coking oven environment.
[048] The equipment and methods described above make it possible to use lower cost coal for the production of metallurgical coke, reducing the overall cost of coke. Depending on the particular coal source and the level of compaction achieved, a load of compacted coal may, according to the invention, include from about 30 to about 60% by weight of coal without coking. The amount of coke produced by the apparatus of the invention can also be increased from 30 to 40 metric tons to around 45 to around 55 metric tons, resulting from the compaction process. The physical parameters of
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17/17 more consistent coal loads, such as the height, width and depth of the coal load still represent a benefit of the apparatus and methods coming according to the invention.
[049] It is observed that it will be evident to the technician in the area from the previous description and through the accompanying drawings that modifications and / or changes may be made in the modalities of the specification. Consequently, it is expressly intended that the previous description and accompanying drawings consist only of illustrative examples of the modalities, without being limited to them, and that the true spirit and scope of this specification is determined with reference to the framework of attached claim.
Petition 870170100759, of 12/21/2017, p. 28/30
1/2

权利要求:
Claims (13)
[1]
1. Method for increasing the apparent density of the coal particles without impacting the coal particles to provide an elongated bed of dry compacted coal, the compacted coal for loading next to a coking oven (12), CHARACTERIZED by the fact of the method understand the following steps:
depositing coal particles on a loading plate (38) external to a coking oven (12), with the loading plate (38) having side walls (60), and at least one movable end wall (88) to provide with an elongated bed of dry, non-compacted coal with an upper surface on the loading plate (38); and compacting the non-compacted coal through passes of a vibrating cylindrical compactor (112) along a length of the non-compacted coal by a sufficient number of passes to decrease the thickness of the coal bed to less than around 80 percent of the original thickness (D1) of the non-compacted coal, where the vibrating cylindrical compactor (112) has a length to diameter ratio ranging from around 1.4: 1 to around 2: 1 and an outlet compaction power of 2 to 5 kilogram-force meters per second.
[2]
2. Method, according to claim 1, CHARACTERIZED by the fact that it further comprises the degassing of non-compacted coal during the compacting step to provide with a bed of dry compacted coal having an apparent density ranging from around 960 to around 1200 kilograms per cubic meter.
[3]
3. Method, according to claim 2, CHARACTERIZED by the fact that the degassing of the coal bed comprises the application of a vacuum source next to one or more probes inserted in the non-compacted coal bed.
[4]
4. Method, according to claim 3, CHARACTERIZED by the fact that the vacuum source provides a vacuum to the bed of non-compacted coal ranging from around 185 to around and 280 mm Hg during the degassing step.
[5]
5. Method, according to claim 2, CHARACTERIZED by the fact that the degassing of the coal bed comprises the ventilation air next to the side walls (60) of the loading plate (38) during the compaction step.
[6]
6. Method, according to claim 1, CHARACTERIZED by the fact that the coal particles are compacted at an apparent density ranging from around 960 to around 1200 kilograms per cubic meter from an initial apparent density of around 640 to around 800 kilograms per cubic meter in
Petition 870170100759, of 12/21/2017, p. 29/30
2/2 less than five passes of the vibratory roller (112).
[7]
7. Method, according to claim 1, CHARACTERIZED in that the length of the vibrating cylindrical compactor (112) varies from around 90 to about 99% of a width of the coal bed.
[8]
8. Method, according to claim 1 CHARACTERIZED by the fact that the vibrating cylindrical compactor (112) is operated in a speed range from around 0.5 to around 3 kilometers per hour.
[9]
9. Method, according to claim 1, CHARACTERIZED by the fact that the vibrating cylindrical compactor (112) passes along the length of the non-compacted coal from one to four times to compact the coal.
[10]
10. Method, according to claim 1, CHARACTERIZED by the fact that it also includes degassing non-compacted coal during the compaction stage by applying a source of vacuum or air ventilation during the passes.
[11]
11. Method, according to claim 1, CHARACTERIZED by the fact that the making of passes from the vibrating cylindrical compactor (112) along a length of the non-compacted coal to a number of passes comprises making passes from the vibrating cylindrical compactor ( 112) along the length of non-compacted coal for less than 5 passes.
[12]
12. Method, according to claim 1, CHARACTERIZED by the fact that the making of the passes of the vibrating cylindrical compactor (112) comprises making passes of the compactor on a bed of non-compacted coal having an original thickness of 135 to 145 centimeters, and where the coal particles are compacted to an apparent density greater than 800 kilograms per cubic meter.
[13]
13. Method, according to claim 1, CHARACTERIZED by the fact that the passages of the vibrating cylindrical compactor (112) along the non-compacted coal reduces the thickness of the coal bed to less than approximately 80 percent of the thickness non-compacted coal and occur in 6 minutes or less.
Petition 870170100759, of 12/21/2017, p. 30/30
1/13
2/13

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同族专利:

公开号 | 公开日

EP2601278A4|2014-08-06|

US20120030998A1|2012-02-09|

CN103370395A|2013-10-23|

KR101614589B1|2016-04-21|

PL2601278T3|2017-11-30|

JP2013540832A|2013-11-07|

KR20140043296A|2014-04-09|

US9200225B2|2015-12-01|

EP2601278A2|2013-06-12|

CN103370395B|2016-11-23|

EP2601278B1|2017-07-12|

WO2012018712A3|2013-07-25|

BR112013002745A2|2017-02-21|

WO2012018712A2|2012-02-09|

CA2807372A1|2012-02-09|

CA2807372C|2017-01-17|

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法律状态:
2017-03-28| B25F| Entry of change of name and/or headquarter and transfer of application, patent and certif. of addition of invention: change of name on requirement|Owner name: SUNCOKE TECHNOLOGY AND DEVELOPMENT CORP. (US) |

2017-06-06| B25D| Requested change of name of applicant approved|Owner name: SUNCOKE TECHNOLOGY AND DEVELOPMENT LLC (US) |

2017-09-26| B07A| Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]|

2018-05-02| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|

2018-06-26| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|

2021-06-01| B21F| Lapse acc. art. 78, item iv - on non-payment of the annual fees in time|Free format text: REFERENTE A 10A ANUIDADE. |

2021-09-21| B24J| Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12)|Free format text: EM VIRTUDE DA EXTINCAO PUBLICADA NA RPI 2630 DE 01-06-2021 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDA A EXTINCAO DA PATENTE E SEUS CERTIFICADOS, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013. |

优先权:

申请号 | 申请日 | 专利标题

US12/849,192|2010-08-03|

US12/849,192|US9200225B2|2010-08-03|2010-08-03|Method and apparatus for compacting coal for a coal coking process|

PCT/US2011/046091|WO2012018712A2|2010-08-03|2011-08-01|Method and apparatus for compacting coal for a coal coking process|

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