• 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:
    A pulp distribution device (10) is provided for distribution of cellulose pulp having a concentration of 2-13% to a rotatable first permeable surface (21) in an apparatus (100) for washing cellulose pulp. The pulp distribution device comprises an inlet (11) for incoming pulp, an outlet (12) for output of pulp to the first permeable surface, a first rotatable distribution means (13") arranged in the pulp distribution device for longitudinal distribution of pulp, and a second permeable surface (14") arranged to allow throughflow of filtrate from pulp in the pulp distribution device, whereby an initial dewatering of the pulp takes place in the pulp distribution device. By means of the invention the initial dewatering in the washing apparatus is increased, which inter alia implies higher capacity of the washing apparatus and higher washing efficiency.
    公开号:SE1150911A1
    申请号:SE1150911
    申请日:2011-10-03
    公开日:2013-04-04
    发明作者:Rickard Andersson；Joergen Lundberg；Anders Bergdahl
    申请人:Metso Paper Sweden Ab；
    IPC主号:
    专利说明:

    Furthermore, conventional thickeners lack suitable means for removing the pulp after thickening. An alternative solution would therefore be highly desirable.
    SUMMARY An object of the present invention is to increase the capacity of an apparatus for washing or dewatering pulp. Another stitch is to increase the efficiency of the appliance. A further object is to provide a washing and / or dewatering apparatus suitable for low consistency applications.
    These and other seams are achieved according to the appended claims.
    The present invention is based on the insight that a higher capacity can be achieved by introducing an additional dewatering surface, arranged in the mass distribution unit of the washing and / or dewatering apparatus. With the help of the new dewatering surface, the initial dewatering of the appliance is increased, which brings a number of advantages, such as: A higher capacity in the appliance Low inlet consistencies can be handled with comparatively small washing appliances No separate thickener is needed before the washing appliance A higher washing efficiency More specifically, a pulp distribution unit for distributing cellulose pulp having a concentration of 2-13% to a movable first permeable surface is provided in an apparatus for washing and / or dewatering cellulose pulp, preferably an apparatus for washing cellulose pulp, whereby the pulp, during operation, is transported together with the first permeable surface. Mass distribution unit comprises an inlet for incoming cellulosic pulp, an outlet for discharging cellulosic pulp to the first permeable surface, a first rotatable distribution means arranged in the pulp distribution unit for longitudinal distribution of pulp, and a second permeable surface arranged to allow, during operation, to allow pulp in the pulp distribution unit, whereby an initial dewatering of the pulp takes place in the pulp distribution unit. Typically, the first rotatable distributing means is arranged to distribute mass to the width of a mass web formed by the mass on the first permeable surface.
    The pulp distribution unit can advantageously be adapted for distributing pulp to substantially the entire width of the pulp web.
    In a roller press application, the longitudinal distribution of mass means the distribution of mass along the length of the press roller. The axis of rotation of the first rotatable distributor is substantially parallel to the axis of rotation of the roller press.
    The first rotatable distribution means and the second permeable surface are typically arranged in the housing of the mass distribution unit. The second permeable surface can hereby be arranged inside the housing or be integrated with, e.g. form part of, the casing.
    The invention provides initial dewatering (or thickening) of the pulp, before the pulp is distributed on the first permeable surface. The mass first reaches the second permeable surface and then reaches the first permeable surface. The second permeable surface, in the pulp distribution unit, forms a dewatering surface, by means of which surface the initial dewatering in the pulp distribution unit is effected.
    The pulp distribution unit of the invention is generally adapted to discharge pulp directly to the movable first permeable surface. In a roller press application, typically the pulp distribution unit would be connected to the trough enclosing the press roller.
    The second permeable surface is physically separated from the first permeable surface.
    The second permeable surface can e.g. be a perforated surface, but other surfaces through which the filtrate can pass are also within the scope of the invention. The second permeable surface may be stationary or rotatable.
    According to one embodiment, the second permeable surface is the outer surface of the first rotatable distributor and the first rotatable distributor is a perforated roller. There, a second rotatable distributing member can advantageously be provided in the pulp distribution unit, for longitudinal distribution of pulp.
    According to one embodiment, the pulp distribution unit comprises a cleaning means, arranged to, during operation, remove dewatered pulp from the second permeable surface.
    The cleaning means is optional, but provides improved dewatering by keeping the second permeable surface (dewatering surface) freer.
    According to one embodiment, the pulp distribution unit comprises a washing liquid supply unit arranged to supply, during operation, washing liquid to the pulp in the pulp distribution unit in the vicinity of the second permeable surface. The invention then provides initial washing of the pulp, before the pulp reaches the first permeable surface.
    According to another aspect of the present invention, there is provided an apparatus for washing and / or dewatering cellulose pulp, which apparatus comprises the above-mentioned pulp distribution unit. The apparatus may advantageously be a roll press and the movable first permeable surface may be the perforated outer surface of a press roll.
    BRIEF DESCRIPTION OF THE DRAWINGS The invention, together with its further objects and advantages, may best be understood by reference to the following description and accompanying drawings, in which: Fig. 1 is a schematic cross-sectional view showing an example of a pulp distribution unit in a washing apparatus (partially shown); according to the prior art; Fig. 2 is a schematic cross-sectional view showing a mass distribution unit in a washing apparatus (partially shown) according to an example of an embodiment of the invention; Figures 3-6 correspond to the view in Fig. 2 and show mass distribution units according to other examples of embodiments of the invention; and a cross-sectional view showing a twin roll press of Fig. 7 is a schematic mass distribution unit according to an example of an embodiment of the invention.
    DETAILED DESCRIPTION In the drawings, similar or corresponding features are indicated by the same reference numerals.
    For the purpose of this description, "a rotatable distributor" refers to a rotatable member which affects the mass distribution in the mass distribution unit. The rotatable distributor is adapted to rotate continuously when the washing and / or dewatering apparatus is in operation. Due to its rotational effect, the rotatable distribution member has a distribution effect. This distribution effect can be more or less pronounced depending on the type of rotatable distribution means, the design of the mass distribution unit housing and other things. The rotatable distribution means may be the only one that satisfies the distribution effect in the mass distribution unit, or there may be other distribution means which also contribute.
    In addition, for the purpose of this description, "longitudinal distribution of pulp" refers to the distribution of pulp along / to the width of the pulp web formed on the first movable permeable surface. The mass is thus distributed in a direction substantially transverse to the direction of movement of the first permeable surface. This means that the rotatable distribution member is arranged with its axis of rotation substantially transverse to the direction of movement of the first permeable surface.
    Consequently, in a roller press application, "longitudinal distribution of pulp" refers to the distribution of pulp along / to the width of the pulp web formed on the roller press. The mass is consequently distributed in a direction substantially transverse to the direction of rotation of the press roll. This means that the rotatable distributing means is arranged with its axis of rotation substantially transverse to the direction of rotation of the press roll. Accordingly, in a roll press application, the longitudinal distribution of pulp means the distribution of pulp over the length, typically along the length of the press roll and along the length of the pulp distribution unit.
    Fig. 1 is a schematic cross-sectional view showing an example of a pulp distribution unit 10, according to the prior art. The pulp distribution unit 10 is arranged in an apparatus 100, such as a twin roll press, of which the upper left side is shown, for distributing pulp on a rotatable perforated surface 21, i.e. the outer surface of the press roll 20, via the outlet 12.
    The mass distribution unit is of the type described in SE 532 366 C2 and consists of an elongate housing 18 with a rotatable screw 13 inside. The mass distribution unit 10 extends along substantially the entire length of the press roll 20 and the axis of rotation of the screw 13 is parallel to the axis of rotation of the press roll 20. The press roll 20 is partially enclosed by a trough 22 and the pulp is transported together with the perforated surface 21, in the direction of rotation, inside the pulp distribution unit 10 and the trough 22. The filtrate from the pulp is allowed to flow through the perforated roll surface 21, thus serving as a drainage surface.
    Fig. 2 shows a pulp distribution unit 10 according to an example of an embodiment of the invention. The view corresponds to the view in Fig. 1. In Fig. 2, there is a permeable surface 14 '(shown as a dashed line) in the pulp distribution unit 10.1. The permeable surface 14' is arranged to allow by de filtration of pulp from pulp in the pulp distribution unit 10, whereby an initial dewatering of pulp takes place in the pulp distribution unit 10 before pulp reaches the perforated roll surface 21. The permeable surface 14 "can e.g. be a perforated plate.
    The permeable surface 14 ”of the pulp distribution unit 10 in Fig. 2 is stationary. It forms part of a wall in a housing 18 which encloses a rotatable distribution member 13 ', such as a rotatable distribution screw. The rotatable distribution means 13 'may advantageously be arranged with its periphery so close to the permeable surface 14', so that it forms a cleaning means 15 'for removing dewatered mass from the permeable surface 14'. It is then preferred that the permeable surface 14 'is curved and has a shape at least partially adapted to the corresponding part of the outer surface of the rotatable distribution member 13'. In this way, efficient cleaning of the permeable surface 14 "is achieved and thereby improved drainage.
    The rotatable distribution means 13 "is arranged to distribute mass evenly inside the housing 18 of the mass distribution unit 10. The rotatable distribution means 13" is longitudinal and can e.g. be a rotatable distribution screw, such as a screw, a screw with wings, and a screw with doctor blades. However, other embodiments are also within the scope of the invention, e.g. straight rotor shafts with wings, paddles or blades. In general, the rotatable dry dividing means 13 "has both a distributing effect and a stirring effect.
    There may also be embodiments (not shown) where the shape of the rotatable manifold 13 "and / or the permeable surface 14" or the distance between the rotatable manifold 13 "and the permeable surface 14" is not such that the rotatable manifold 13 "forms a cleaning means for removing dewatered pulp from the permeable surface 14 '. In such a case, a separate cleaning means may advantageously be provided, which would be movable, though not necessarily rotatable.
    The design of the cleaning member depends on the shape and position of the permeable surface 14 ”.
    Fig. 3 shows another embodiment of the invention, where the pulp distribution unit 10 has a rotatable permeable surface 14 "". The permeable surface 14 "of the pulp distribution unit 10 in Fig. 3 is the outer surface of the rotatable distribution member 13", which rotatable distribution member 13 "is a perforated roller. The filtrate is allowed to pass through the perforated roller 13 "and typically collects at one or both ends of the perforated roller 13".
    In general, some type of cleaning means 15 "" is needed, e.g. a scraper unit, for removing dewatered pulp from the rotatable permeable surface 14 ”. In the 1577 pulp distribution unit 10 shown meets the trough 22. The cleaning means 15 "" provides the embodiment, then the scraper unit is arranged in the area where more efficient initial dewatering and ensures that dewatered pulp does not stick to the rotatable permeable surface 14 ". According to one embodiment, the housing 18 of the pulp distribution unit 10 is comparatively high.
    The height of the casing, i.e. the height of its long walls 18a, 18b should be chosen so that the pressure in the pulp distribution unit 10 is sufficient to provide effective longitudinal pulp distribution when the casing 18, during operation, is filled with pulp. The height of the long walls 18a, 18b would in such an embodiment e.g. be able to choose to be at least twice the roll diameter.
    Fig. 4 shows another embodiment of the invention, with a rotatable permeable surface 14 "and optionally cleaning means 15" as in Fig. 3. The mass distribution unit 10 in Fig. 4 further comprises a unit for washing liquid supply 17, arranged to, during operation, supply washing liquid to the mass in the vicinity of the permeable surface 14 ”. Hereby, both initial dewatering and initial washing are performed in the pulp distribution unit 10, which provides an even more efficient washing apparatus. The washing liquid supply unit 17 would e.g. may be of a type usually arranged in connection with a trough 22 of a washing press.
    It would e.g. be able to use a number of nozzles to transfer washing liquid to the interior of the pulp distribution unit 10.
    Fig. 5 shows another embodiment of the invention, with a rotatable permeable surface 14 "and optional cleaning means 15". However, the mass distribution unit 10 in Fig. 5 also includes a further rotatable distribution means 16 for longitudinal mass distribution.
    The additional rotatable distribution member 16 is preferably longitudinal. It would typically be arranged with its axis of rotation further away from the perforated roller surface 21 than the axis of rotation of the rotatable distributor 13 '.
    The further rotatable distribution means 16 is arranged to distribute mass evenly in the housing 18 of the mass distribution unit 10. be a rotatable distribution screw, such as a screw, a screw with wings, and a screw with doctor blades. However, there are other embodiments, e.g. straight rotor shafts with wings, paddles or blades, within the range of the winding. In general, the additional rotatable distributor 16 has both a distributing effect and a stirring effect. An advantageous feature of the further rotatable distributor 16 is that it helps to distribute pulp along the length of the pulp distribution unit 10 and along the perforated Its agitating action causes pulp movement in the length of the roll surface 21. the mass distribution unit 10, which improves the longitudinal mass distribution.
    Fig. 6 shows a further embodiment of the invention, with a rotatable permeable surface 14 ", optional cleaning means 15", and a further rotatable distribution means 16 as in Fig. 5. However, the pulp distribution means 10 in Fig. 6 also comprises a unit for washing liquid 17, arranged to supply, during drift fl, washing liquid to pulp in the vicinity of the permeable surface 14 ”. Both initial dewatering and initial washing are performed in the pulp distribution unit 10, which provides an efficient washing apparatus. The washing liquid supply unit 17 would e.g. may be of a type usually arranged in connection with the trough 22 of a washing press. It would e.g. be able to use a number of nozzles to transfer the washing liquid to the interior of the pulp distribution unit 10. By means of the further rotatable distribution means 16, the pulp is distributed more evenly in the pulp distribution unit, whereby the initial dewatering and the initial washing in the pulp distribution unit become even more efficient.
    The mass distribution unit in Figures 4 and 6 has a different configuration of the housing 18 and thereby a different arrangement of the rotatable distribution member 13 ”with respect to the housing 18 than the other exemplary embodiments shown. This illustrates the fact that the invention is not limited to a particular casing design. It should also be mentioned that the washing liquid supply unit 17 in Figures 4 and 6 may very well be used in e.g. a housing of the type shown in Figures 2, 3 or 5.
    Fig. 7 shows a twin roll press 100 with mass distribution units 10 according to an example of an embodiment of the invention. The press 100 comprises two cooperating cylindrical wash rolls / drums 20. The two press rolls 20 are arranged to rotate in opposite directions during operation (as indicated by the arrows) and each has a permeable outer surface 21, more specifically a perforated metal plate. The press rollers 20 are partially enclosed by a trough 22 formed by guide surfaces, arranged at a distance from the perforated outer surface 21 of the respective press roll 20 to partially enclose the press roll in the circumferential direction.
    A pulp distribution unit 10, in this example the pulp distribution unit in Fig. 2, is connected to each press roll 20. The mass distribution unit 10 is arranged on the upper part of the press roll 20 for distributing the mass on the perforated roll surface 21. It typically comprises an elongate housing 18, which extends lengthwise along a substantial portion of the press roll. The pulp distribution unit 10 is connected to the trough 22. During operation, pulp enters the pulp distribution unit via its inlet 11, which e.g. may be arranged in the middle of the twin roller press 100 seen in the longitudinal direction. The inlet consistency of the pulp is in the range 2-13%.
    In the pulp distribution unit 10, the pulp is dewatered and distributed in the longitudinal direction and discharged through the outlet 12 while forming a pulp web on the perforated roll surface 21. The pulp web is transported, guided by the trough 22, in the direction of rotation D1 to be pressed in a nip 23 where the distance between the press rollers 20 is least. The press rollers 20 include axial filtrate channels (not shown) which receive the filtrate passing through the perforated roll surface 21, and typically transport it towards the ends of the roll press 20, where it is discharged. The press 100 is preferably an apparatus for washing cellulosic pulp.
    Washing liquid can e.g. is supplied to the pulp web in the trough 22. The pulp is discharged by means of a drain screw 30.
    In Fig. 7, two press rolls 20, each provided with a mass distribution unit 10, arranged next to each other, with centers of rotation in the same horizontal plane. The invention is also suitable for washing and / or dewatering devices where, for example, the rollers are arranged differently, or only a perforated roller is used, as well as for another device where pulp is dewatered on a movable permeable surface.
    The trough 22 may consist of a continuous trough structure (Fig. 7) or, alternatively, comprise a number of linked trough parts (not shown). In the latter case, one or more of the trough parts may be movable to and from the press roll 20, e.g. began to simplify cleaning of the press roll. There, 10 15 20 25 30 11 e.g. be a movable trough portion extending into each mass distribution unit, e.g. pivotally attached to one of its ends.
    Particular embodiments of the pulp distribution unit 10 will now be described with reference to Figures 2, 3 and 5. The press roll 20 with the rotatable perforated surface 21 rotates in a direction D1 and the rotatable distribution member 13 ", 13" rotates in a direction D2, so that its peripheral surface moves in the same direction as the perforated surface 21 of the press roll 20 in the area where they face each other. The rotatable torque splitter 13 ", 13" is arranged so that a mass path can be formed between it and the perforated surface 21. The rotatable splitter 13 ', 13 "preferably rotates at such a speed that its peripheral surface moves faster than the perforated surface 21 The pulp distribution unit 10 is located substantially above the perforated surface 21 of the press roll 20 and the pulp can flow substantially freely downwards through the outlet 12 during the formation of the pulp web.
    The outlet 12 opens towards the pulp web, which, during operation, is formed on the rotatable perforated surface 21 and preferably has a length corresponding to the width of the pulp web.
    The outlet 12 has a width limited by a first long wall 18a and a second opposite long wall 18b which is substantially parallel to the first wall. The rotatable distribution member 13 ", 13" is arranged between the long walls 18a, 18b for distributing the mass substantially along the entire length of the outlet 12. According to one embodiment, the rotatable distributor 13 ", 13" is positioned so that a first distance a1 between the rotatable distributor 13 ", 13" and the first long wall 18a is greater than a second distance a2 between the rotatable distributor 13 ", 13 ”and the rotatable perforated surface 21.
    The thickness of the pulp web is limited on one side of the press roll 20 and on the other side of the trough 22, and would normally be thinner than the distance a2 between the rotatable dry dividing member 13 ", 13" and the press roll 20. The distance a2 can e.g. be up to two to three times the thickness of the pulp web. In one embodiment, the rotatable distributor 13 ", 13" is further positioned so that a third distance a3 between the rotatable distributor 13 ', 13 "and the second long wall 18b is substantially smaller than the second distance a2.
    The above-described embodiments with the specified design of the mass distribution unit 10, in particular the "open" outlet 12 and the specified position of the rotatable distribution means 13 ', 13 "within the mass distribution unit 10, have some advantageous effects. The pulp distribution unit 10 provides pulp distribution along the press roll 20, but also forming a pulp web on the press roll 20.
    In addition, the dewatering increases when the pulp first reaches the press roll 20.
    It should be emphasized, however, that the invention is not limited to a particular type of pulp distribution unit. That year e.g. possible to have an outlet formed by a number of holes in the bottom of the pulp distribution unit 10, as in EP 1 229 164 B1 instead of the shown open outlet 12.
    The present invention, according to all described embodiments and other embodiments within its scope, is particularly advantageous in low consistency applications.
    Low consistency applications here refer to an inlet consistency of the incoming pulp to the washing / dewatering apparatus in the range 2-5%. The capacity of a washing machine such as a twin roll press, depends on the inlet consistency of the pulp, since the apparatus is hydraulically limited by the amount of liquid to be removed. With the help of the invention, an increased dewatering is obtained with the new dewatering surface 14 ', 14' "for initial dewatering in the pulp distribution unit 10. The pulp consistency will therefore be higher when the pulp enters the trough 22. This means that low inlet consistencies can be handled by comparison small washing machines. Furthermore, no separate thickener is required before the washing machine. The washing apparatus can be said to have a built-in thickener in the pulp distribution unit 10 according to the invention.
    The initial dewatering in a pulp distribution unit 10 according to the present invention is an altered fate over the new dewatering surface (i.e. the permeable surface 14 °, 14 "in the pulp distribution unit) due to a pressure difference across this surface. Normally, during operation, the pressure will be higher within the mass-containing space of the pulp distribution unit 10, than on the other side of the permeable surface 14 ', 14 ".
    The mass distribution unit 10 can also be pressurized to increase the pressure difference across the permeable surface 14 ', 14 ", or alternatively a negative pressure can be created on the outside of the permeable surface 14', 14" (ie outside the permeable surface 14 'in Fig. 2 or inside the rotatable distributor 13 ”in Figures 3-6). This can be done with measures well known to those skilled in the art.
    In the embodiments shown, there is a permeable surface 14 ", 14" in each pulp distribution unit 10. It should be noted that embodiments with more than one drainage surface 14 ", 14" in the pulp distribution unit 10 are also possible.
    The pulp distribution unit could comprise two permeable surfaces for initial dewatering, both stationary, both rotatable, or one stationary and the other rotatable. There can also be more than two permeable surfaces for initial drainage. Although the invention has been described with reference to specific embodiments shown, it is emphasized that it also covers equivalents to the features shown, as well as changes and variants obvious to those skilled in the art and that the scope of the invention is limited only by the appended claims.
    权利要求:
    Claims (17)
    [1]
    A pulp distribution unit (10) for distributing cellulose pulp having a concentration of 2-13% to a movable first permeable surface (21) in an apparatus (100) for washing and / or dewatering cellulose pulp, whereby the pulp, during operation, transported together with the first permeable surface, which mass distribution unit comprises: an inlet (1 1) for incoming cellulosic pulp, an outlet (12) for discharging cellulosic pulp to the first permeable surface, and a first rotatable distributing means (13 ", 13") arranged in the mass distribution unit for longitudinal distribution of mass, characterized in that the first rotatable distribution means is a screw or a roller, and that the mass distribution unit further comprises a second permeable surface (14 ", 14") arranged to allow, during operation, by pulp in the pulp distribution unit (19), whereby an initial dewatering takes place in the pulp distribution unit.
    [2]
    The mass distribution unit according to claim 1, wherein the first rotatable distribution means (13 °, 13 ") surface (14 °, 14") is the housing (10) of the mass distribution unit (10). and the other permeable arranged in
    [3]
    The pulp distribution unit according to claim 1 or 2, wherein the second permeable surface (14 ") is stationary.
    [4]
    The pulp distribution unit according to claim 3, wherein the first rotatable distribution means (13 ') is arranged with its periphery so close to the second permeable surface (14 °) that it forms a cleaning means (15 ") for removing dewatered pulp from the second permeable surface. . 10 15 20 25 30 15
    [5]
    The mass distribution unit according to any one of claims 3 or 4, wherein the first rotatable distribution means (13 ') is selected from the group of: a screw with wings, and a screw with doctor blades.
    [6]
    The pulp distribution unit according to claim 1 or 2, wherein the second permeable surface (14 ") is rotatable.
    [7]
    The mass distribution unit according to claim 6, wherein the second permeable surface (14 ") is the outer surface (14") of the first rotatable distribution means (13 "), which first distribution means is a perforated roller.
    [8]
    The pulp distribution unit according to claim 7, comprising a scraper unit forming a cleaning means (15 ") for removing dewatered pulp from the second permeable surface (14").
    [9]
    The mass distribution unit according to claim 7 or 8, comprising a second rotatable distribution means (16) for longitudinal distribution of mass.
    [10]
    The mass distribution unit according to claim 9, wherein the second rotatable distribution means (16) is arranged with its axis of rotation further away from the first permeable surface (21) than the axis of rotation of the first dry distribution means (13 ").
    [11]
    11. ll. The mass distribution unit according to claim 9 or 10, wherein the second rotatable distribution means (16) is selected in the group of: a screw, a screw with wings, and a screw with doctor blades.
    [12]
    The pulp distribution unit according to any one of the preceding claims, comprising a washing liquid supply unit (17) arranged to supply, during operation, washing liquid to pulp in the pulp distribution unit (10) in the vicinity of the second permeable surface (14 ', 14 "). 10 15 20 25 30 16
    [13]
    The mass distribution unit according to any one of the preceding claims, wherein the first permeable surface (21) rotates in one direction (D1) and the first rotatable distribution means (13 °, 13 ") rotates in one direction (D2), so that its peripheral surface touches in the same direction as the first permeable surface in the area where they face each other, which first rotatable distribution means is arranged so that a mass path can be formed between the first rotatable distribution means and the first permeable surface.
    [14]
    The pulp distribution unit according to any one of the preceding claims, wherein the outlet (12) opens towards a pulp web, which, during drift fi, is formed on the first permeable surface (21) and which outlet (12) has a length corresponding to the length of the pulp web and a width limited of a first long wall (18a) and a second opposite long wall (18b) substantially parallel to the first long wall, the first rotatable distributing means (13 ", 13") being arranged between the long walls (18a, 18b) for distributing the mass along substantially the entire length of the outlet, and the first rotatable distributor is positioned so that a first distance (a1) between the first rotatable distributor and the first long wall (18a) is greater than a second distance between the first rotatable distributor and the first permeable surface.
    [15]
    The mass distribution unit according to claim 14, wherein the first rotatable distribution means (132 13 ") is positioned so that a third distance (a3) between the first rotatable distribution means and the second long wall (18b) is substantially smaller than the second distance (a2). between the first rotatable distributor and the first permeable surface (21).
    [16]
    An apparatus (100) for washing and / or dewatering cellulose pulp, which apparatus has a movable first permeable surface (21) together with which pulp, during operation, is transported, which apparatus comprises the pulp distribution unit (10) according to any one of the preceding claims. 17
    [17]
    The apparatus of claim 16, wherein the apparatus is a roller press (100) and the movable first permeable surface is a rotatable perforated outer surface of a press roller (20) of a roller press.
    类似技术:
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    SE200166C1|1965-01-01|
    同族专利:
    公开号 | 公开日
    SE536163C2|2013-06-04|
    EP2764156A4|2015-05-27|
    EP2764156B1|2017-06-07|
    CN104024521A|2014-09-03|
    CN104024521B|2016-08-17|
    BR112014007804A2|2019-10-08|
    EP2764156A1|2014-08-13|
    CA2850724A1|2013-04-11|
    WO2013051995A1|2013-04-11|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1150911A|SE536163C2|2011-10-03|2011-10-03|Mass distribution unit, as well as apparatus for washing and / or dewatering cellulose pulp|SE1150911A| SE536163C2|2011-10-03|2011-10-03|Mass distribution unit, as well as apparatus for washing and / or dewatering cellulose pulp|
    CN201280048396.6A| CN104024521B|2011-10-03|2012-10-02|Paper pulp distributor|
    PCT/SE2012/051049| WO2013051995A1|2011-10-03|2012-10-02|Pulp distribution device|
    EP12838006.0A| EP2764156B1|2011-10-03|2012-10-02|Pulp distribution device|
    BR112014007804A| BR112014007804A2|2011-10-03|2012-10-02|pulp dispensing apparatus and apparatus for washing / or removing water from cellulose pulp|
    CA2850724A| CA2850724A1|2011-10-03|2012-10-02|Pulp distribution device|
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