公开(公告)号：EP0920894A1

公开(公告)日：1999-06-09

申请号：EP98203976.0

申请日：1998-11-25

申请人： Niro Process Technology B.V.

发明人： Roodenrijs, Jacobus Petrus

IPC分类号： B01D11/02 ,  B01D9/00

CPC分类号： B01D33/015 ,  B01D33/466 ,  B01D33/60

摘要： The invention relates to an installation for separating and purifying solids from a suspension and/or for leaching out solid particles, having a cylinder (22) having a piston (23) movable therein. A sealing part (24) of the piston is in contact with the interior wall of the cylinder. A filter (27) is positioned some distance away from the sealing part of the piston. A discharge chamber (29) is located between the filter and the sealing part of the piston. A pump chamber (30) is formed below the sealing part of the piston and a washing column (28) chamber containing a packed bed of solid particles is formed above the filter. During a downward pump stroke of the piston, suspension is forced, via at least one connecting channel (26) between the pump chamber and the washing column chamber, to the washing column chamber. During a compression stroke, liquid is brought via the filter to the discharge chamber and discharged via a discharge line (35). Solid particles, such as crystals, remain behind on the filter and are compressed against the packed bed. The connecting channel can be located inside the cylinder. In that case the piston has a conical jacket with a streamlined non-return valve (40,Figs.2,3). The connecting channel between pump chamber and washing column chamber can also be located outside the cylinder (51,Fig.5A). The installation according to the invention has relatively simple seals and feed and discharge lines fixed to the cylinder in a stationary position. The installation can also be scaled up easily.

摘要翻译： 本发明涉及一种用于从悬浮液中分离和纯化固体和/或用于浸出固体颗粒的装置，其具有可在其中活动的活塞（23）的圆筒（22）。 活塞的密封部分（24）与气缸的内壁接触。 过滤器（27）离开活塞的密封部分一定距离。 排出室（29）位于过滤器和活塞的密封部分之间。 在活塞的密封部下方形成有泵室（30），在过滤器的上方形成有容纳固体粒子的填充床的清洗柱（28）。 在活塞的向下泵冲程期间，通过泵室和洗涤柱室之间的至少一个连接通道（26）将悬浮液强制到洗涤塔室。 在压缩冲程期间，通过过滤器将液体通过排出室排出，并通过排出管线（35）排出。 诸如晶体的固体颗粒保留在过滤器的后面并且压靠在填充床上。 连接通道可以位于气缸内。 在这种情况下，活塞具有带有流线型止回阀（40，图2,3）的圆锥形夹套。 泵室和洗涤柱室之间的连接通道也可以位于气缸外部（51A，图5A）。 根据本发明的装置具有相对简单的密封和在静止位置固定到气缸的进料和排出管线。 安装也可以轻松放大。

公开(公告)号：EP1060775A1

公开(公告)日：2000-12-20

申请号：EP00202116.0

申请日：2000-06-16

申请人： Niro Process Technology B.V.

发明人： Roodenrijs, Jacobus Petrus ,  Janssen, Halbe Anne

IPC分类号： B01D9/00

CPC分类号： B01D9/0022 ,  B01D9/0036 ,  B01D9/0059

摘要： The invention comprises an installation (1) for crystallising a liquid from a solution, for example for freeze-concentrating effluent, having a nucleation zone (2), a ripening zone (3) and a separator (4). According to the invention the nucleation zone (2) is constructed as a vacuum crystalliser, such that the installation is of relatively simple and inexpensive construction, can easily be scaled up and is suitable for concentrating liquids containing undissolved particles, such as, for example, precipitated salts. The separator (4) preferably comprises a washing column.

摘要翻译： 本发明包括一种用于使来自溶液的液体结晶的装置（1），例如具有成核区（2），成熟区（3）和分离器（4）的冷冻浓缩流出物。 根据本发明，成核区（2）被构造为真空结晶器，使得该装置相对简单且廉价的结构，可以容易地放大并且适用于浓缩含有未溶解颗粒的液体，例如， 沉淀盐。 分离器（4）优选包括洗涤塔。

公开(公告)号：EP0923969A1

公开(公告)日：1999-06-23

申请号：EP98204274.9

申请日：1998-12-16

申请人： Niro Process Technology B.V.

发明人： Roodenrijs, Jacobus Petrus

IPC分类号： B01D9/04

CPC分类号： B01D9/0022 ,  B01D9/0031 ,  B01D9/0036

摘要： The invention relates to a crystallization apparatus and to a method for crystallizing a liquid from a solution, a mixture of liquids or a suspension. The apparatus comprises a growth zone (4) in a vertically positioned tank (2), which growth zone is positioned below a nucleation zone (5). Via a delivery line (13) the seed crystals are fed from the nucleation zone to the bottom end of the growth zone. In the growth zone the ice slurry slowly moves in a vertical direction at such a low velocity that heavier particles are able to precipitate and to be discharged at the bottom end. Preferentially, the nucleation zone comprises a vacuum apparatus for effecting a reduction in pressure in the nucleation zone to between 10 -4 and 7·10 -3 bar. Using the apparatus according to the present invention it is possible for waste water and effluent to be concentrated in a simple manner, clogging of, for example, filters owing to the settling of solid particles being prevented.

摘要翻译： 本发明涉及一种结晶装置和一种从溶液，液体或悬浮液的混合物中使液体结晶的方法。 该装置包括在垂直定位的罐（2）中的生长区（4），该生长区位于成核区（5）的下方。 通过输送管线（13），晶种从成核区域进料到生长区域的底端。 在生长区中，冰浆以如此低的速度在垂直方向缓慢移动，使得较重的颗粒能够沉淀并在底端排出。 优选地，成核区域包括用于将成核区域中的压力降低至10 -4和7.10 -3巴之间的真空装置。 使用根据本发明的装置，废水和流出物可以以简单的方式集中，例如由于防止固体颗粒沉降而堵塞例如过滤器。

公开(公告)号：EP0920894B1

公开(公告)日：2004-03-03

申请号：EP98203976.0

申请日：1998-11-25

申请人： Niro Process Technology B.V.

发明人： Roodenrijs, Jacobus Petrus

IPC分类号： B01D11/02 ,  B01D9/00

CPC分类号： B01D33/015 ,  B01D33/466 ,  B01D33/60

摘要： The invention relates to an installation for separating and purifying solids from a suspension and/or for leaching out solid particles, having a cylinder (22) having a piston (23) movable therein. A sealing part (24) of the piston is in contact with the interior wall of the cylinder. A filter (27) is positioned some distance away from the sealing part of the piston. A discharge chamber (29) is located between the filter and the sealing part of the piston. A pump chamber (30) is formed below the sealing part of the piston and a washing column (28) chamber containing a packed bed of solid particles is formed above the filter. During a downward pump stroke of the piston, suspension is forced, via at least one connecting channel (26) between the pump chamber and the washing column chamber, to the washing column chamber. During a compression stroke, liquid is brought via the filter to the discharge chamber and discharged via a discharge line (35). Solid particles, such as crystals, remain behind on the filter and are compressed against the packed bed. The connecting channel can be located inside the cylinder. In that case the piston has a conical jacket with a streamlined non-return valve (40,Figs.2,3). The connecting channel between pump chamber and washing column chamber can also be located outside the cylinder (51,Fig.5A). The installation according to the invention has relatively simple seals and feed and discharge lines fixed to the cylinder in a stationary position. The installation can also be scaled up easily.