DK1088580T3 - Process for drying filter cakes built in a filter press as well as a filter press for carrying out the method - Google Patents
Process for drying filter cakes built in a filter press as well as a filter press for carrying out the methodInfo
- Publication number
- DK1088580T3 DK1088580T3 DK99119606T DK99119606T DK1088580T3 DK 1088580 T3 DK1088580 T3 DK 1088580T3 DK 99119606 T DK99119606 T DK 99119606T DK 99119606 T DK99119606 T DK 99119606T DK 1088580 T3 DK1088580 T3 DK 1088580T3
- Authority
- DK
- Denmark
- Prior art keywords
- filter
- membrane
- press
- filter cake
- heater
- Prior art date
Links
- 239000012065 filter cake Substances 0.000 title abstract 10
- 238000000034 method Methods 0.000 title abstract 3
- 238000001035 drying Methods 0.000 title abstract 2
- 239000012528 membrane Substances 0.000 abstract 7
- 238000010438 heat treatment Methods 0.000 abstract 5
- 239000007788 liquid Substances 0.000 abstract 3
- 230000000717 retained effect Effects 0.000 abstract 3
- 239000000706 filtrate Substances 0.000 abstract 2
- 239000012071 phase Substances 0.000 abstract 2
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 abstract 1
- 238000009835 boiling Methods 0.000 abstract 1
- 239000004020 conductor Substances 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 abstract 1
- 238000009413 insulation Methods 0.000 abstract 1
- 239000007791 liquid phase Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 239000012808 vapor phase Substances 0.000 abstract 1
- 238000003466 welding Methods 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/18—Heating or cooling the filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/12—Filter presses, i.e. of the plate or plate and frame type
- B01D25/21—Plate and frame presses
- B01D25/215—Construction of the filter plates, frames
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/28—Leaching or washing filter cakes in the filter handling the filter cake for purposes other than regenerating
- B01D25/282—Leaching or washing filter cakes in the filter handling the filter cake for purposes other than regenerating for drying
- B01D25/284—Leaching or washing filter cakes in the filter handling the filter cake for purposes other than regenerating for drying by gases or by heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/28—Leaching or washing filter cakes in the filter handling the filter cake for purposes other than regenerating
- B01D25/282—Leaching or washing filter cakes in the filter handling the filter cake for purposes other than regenerating for drying
- B01D25/285—Leaching or washing filter cakes in the filter handling the filter cake for purposes other than regenerating for drying by compression using inflatable membranes
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
- Drying Of Solid Materials (AREA)
Abstract
To dry accumulated filter cakes in the filter chamber (4) of a filter press, the cakes are heated only at the side away from the membrane (6). The temperature is set according to the boiling point of the retained liquid under vacuum, so that a vapor layer is formed to penetrate through the filter cake and press the retained liquid against the drainage surface of the unheated membrane (6). The heat is distributed evenly over the filter cake surface so that the transit zone between the vapor and liquid phases is even and homogenous through the filter cake, without local vapor break-through points. The vacuum is applied during the final press phase, to accelerate the drainage action, and the heating of the filter cake surface starts during the final press phase. Heating elements are directly at the filter cake surfaces. During drying under final press pressure, the filter cakes lie against the membrane (6), using a final pressure which is higher than the vapor pressure of the retained fluid in the cake. The pressure medium for the membrane can be cooled or heated to set raised temp. differences or to match process requirements within a restricted range. Vacuum is applied at the filter outlet or the inlet for the clouded liquid for filtering. An Independent claim is included for a filter press with a heating element directly between two filter membrane units (1). The filter surface has filter openings for the filtrate, evenly distributed over it. Preferred Features: The filtrate outflow channels, at the corner of the membrane filter unit (1), has a preferably triangular cross section to improve the flow. The plate frame (3) has a vacuum-tight edge seal, with an inner integrated filter cake clamp. The heater is of a material with high thermal conductivity, and preferably metal. The side of the heater towards the filter membrane unit (1) is flat or part of the filter cake, without drainage surfaces. The heater is in one or more parts, held together by an adhesive or welding or with additional seals. The heater has heating channels which are round and/or oval and/or rectangular, in a serpentine layout. The heaters have a thermal insulation at the edges of the frame. The heaters have electrical heating conductors.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP99119606A EP1088580B1 (en) | 1999-10-02 | 1999-10-02 | Process of drying filtercakes in filter chambers of a filter press and filter press for carrying out said process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DK1088580T3 true DK1088580T3 (en) | 2004-04-13 |
Family
ID=8239113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK99119606T DK1088580T3 (en) | 1999-10-02 | 1999-10-02 | Process for drying filter cakes built in a filter press as well as a filter press for carrying out the method |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1088580B1 (en) |
| AT (1) | ATE256490T1 (en) |
| DE (1) | DE59908116D1 (en) |
| DK (1) | DK1088580T3 (en) |
| ES (1) | ES2209308T3 (en) |
| PT (1) | PT1088580E (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012004922A1 (en) * | 2012-03-10 | 2013-09-12 | Lenser Filtration Gmbh | Filter element for use as a head or end element |
| CN105327534B (en) * | 2014-08-13 | 2017-05-24 | 吕明旺 | Composite plate-frame type drying filter press |
| CN110354549B (en) * | 2019-08-01 | 2023-05-26 | 景津装备股份有限公司 | Van-type stainless steel comprehensive heating filter plate |
| CN112516633B (en) * | 2020-11-30 | 2022-02-18 | 浙江拉罗克过滤技术有限公司 | Air energy filter press and using method thereof |
| TWI758102B (en) * | 2021-02-22 | 2022-03-11 | 張日養 | Low temperature filter press drying method and device for filter press |
| CN114949946B (en) * | 2022-07-21 | 2022-10-21 | 河北化工医药职业技术学院 | Stainless steel plate frame filter press |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2258621B (en) * | 1991-08-14 | 1995-04-26 | Edwards & Jones | Improvements in or relating to filtration |
| DE4224648A1 (en) * | 1991-10-04 | 1993-04-08 | Escher Wyss Gmbh | Dewatering of liq.-solid mixtures using pressure and heat - by forming vapour phase above mixt. and forcing filtrate through underlying filter surface in mainly liq. form |
| DE4136906C2 (en) * | 1991-11-09 | 1999-03-11 | Lenser Kunststoff Preswerk Gmb | Filter plate for a filter press |
-
1999
- 1999-10-02 DK DK99119606T patent/DK1088580T3/en active
- 1999-10-02 EP EP99119606A patent/EP1088580B1/en not_active Revoked
- 1999-10-02 PT PT99119606T patent/PT1088580E/en unknown
- 1999-10-02 DE DE59908116T patent/DE59908116D1/en not_active Revoked
- 1999-10-02 ES ES99119606T patent/ES2209308T3/en not_active Expired - Lifetime
- 1999-10-02 AT AT99119606T patent/ATE256490T1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| EP1088580B1 (en) | 2003-12-17 |
| DE59908116D1 (en) | 2004-01-29 |
| EP1088580A1 (en) | 2001-04-04 |
| ES2209308T3 (en) | 2004-06-16 |
| ATE256490T1 (en) | 2004-01-15 |
| PT1088580E (en) | 2004-04-30 |
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