CA2024233C - Apparatus for removing ash from repulped wastepaper - Google Patents
Apparatus for removing ash from repulped wastepaperInfo
- Publication number
- CA2024233C CA2024233C CA 2024233 CA2024233A CA2024233C CA 2024233 C CA2024233 C CA 2024233C CA 2024233 CA2024233 CA 2024233 CA 2024233 A CA2024233 A CA 2024233A CA 2024233 C CA2024233 C CA 2024233C
- Authority
- CA
- Canada
- Prior art keywords
- ash
- screening portion
- fibers
- headbox
- belt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000010893 paper waste Substances 0.000 title claims abstract description 56
- 238000012216 screening Methods 0.000 claims abstract description 68
- 239000000835 fiber Substances 0.000 claims abstract description 67
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 19
- 239000011888 foil Substances 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000004927 clay Substances 0.000 description 5
- 239000000123 paper Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011087 paperboard Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
- D21D5/02—Straining or screening the pulp
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
- D21C5/02—Working-up waste paper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/04—Filters with filtering elements which move during the filtering operation with filtering bands or the like supported on cylinders which are impervious for filtering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/44—Regenerating the filter material in the filter
- B01D33/46—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element
- B01D33/465—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element take-off rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/44—Regenerating the filter material in the filter
- B01D33/48—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
- B01D33/50—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/58—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element
- B01D33/62—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying
- B01D33/64—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying by compression
- B01D33/646—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying by compression by pressure rollers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/64—Paper recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/404,247 US5045181A (en) | 1989-09-07 | 1989-09-07 | Apparatus for removing ash from repulped wastepaper |
| US07/404,247 | 1989-09-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2024233A1 CA2024233A1 (en) | 1991-03-08 |
| CA2024233C true CA2024233C (en) | 1995-06-27 |
Family
ID=23598804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2024233 Expired - Fee Related CA2024233C (en) | 1989-09-07 | 1990-08-29 | Apparatus for removing ash from repulped wastepaper |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US5045181A (Direct) |
| EP (1) | EP0417030B1 (Direct) |
| JP (1) | JPH0397988A (Direct) |
| KR (1) | KR0183400B1 (Direct) |
| BR (1) | BR9004388A (Direct) |
| CA (1) | CA2024233C (Direct) |
| DE (1) | DE69010123T2 (Direct) |
| FI (1) | FI95604C (Direct) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5275024A (en) * | 1992-05-04 | 1994-01-04 | The Black Clawson Company | Paper pulp washing |
| WO1996006975A1 (en) * | 1994-08-31 | 1996-03-07 | Hoffman Environmental Systems, Inc. | Thin mat washing of cellulosic pulp |
| DE19637031A1 (de) * | 1996-09-12 | 1998-03-19 | Boltersdorf Hans Joachim | Verfahren zur Behandlung von Reststoffen, insbesondere Rejekten aus Pulperentsorgungssystemen oder Endstufensortierern, und Vorrichtung zur Durchführung des Verfahrens |
| US6228215B1 (en) | 1998-04-06 | 2001-05-08 | Hoffman Enviornmental Systems, Inc. | Method for countercurrent treatment of slurries |
| FI104841B (fi) * | 1998-07-01 | 2000-04-14 | Valmet Corp | Paperikoneessa käytettävä kaavin |
| JP4333716B2 (ja) | 2006-09-08 | 2009-09-16 | 株式会社日立製作所 | 情報記録装置 |
| WO2011041749A1 (en) * | 2009-10-02 | 2011-04-07 | James Alexander Stark | Liquid separation using relative motion and fluid effects |
| US9949567B2 (en) | 2014-09-26 | 2018-04-24 | L&P Property Management Company | Reversible headrest tilt, lumbar mechanism |
| KR101887734B1 (ko) * | 2015-01-23 | 2018-08-10 | 니혼도꾸슈도교 가부시키가이샤 | 케이스에 있어서의 덮개의 장착구조 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA623012A (en) * | 1961-07-04 | M. Owens Thomas | Removing impurities from fluid suspensions | |
| DE1090963B (de) * | 1953-03-09 | 1960-10-13 | Amos Landmaschf Hermann | Fortlaufend arbeitende Presse fuer Obstmaische od. ae. Pressgut |
| US4151093A (en) * | 1978-03-24 | 1979-04-24 | Lenox Institute For Research | Stockwasher |
| CH644414A5 (de) * | 1980-02-06 | 1984-07-31 | Escher Wyss Gmbh | Siebmaschine, insbesondere zur behandlung von aus altpapier gewonnenen waesserigen faserstoffsuspensionen. |
| AT377024B (de) * | 1981-06-03 | 1985-01-25 | Escher Wyss Gmbh | Waschvorrichtung zum waschen von faserstoffsuspensionen |
| CH655748A5 (de) * | 1982-04-23 | 1986-05-15 | Escher Wyss Gmbh | Verfahren zur ausscheidung von klebrigen verunreinigungen aus stoffsuspension sowie vorrichtung zur ausfuehrung des verfahrens. |
| US4680088A (en) * | 1985-02-21 | 1987-07-14 | Michael Scheck | Process for removing ink particles from paper products |
| FI872331A7 (fi) * | 1986-05-27 | 1987-11-28 | Anglo American Corp Of South Africa Ltd | Laite ja menetelmä kiinteän aineosan erottamiseksi toisesta kiinteästä aineosasta nesteessä olevasta suspensiosta. |
| US4722793A (en) * | 1986-07-03 | 1988-02-02 | The Black Clawson Company | Apparatus and method for thickening pulp and paper stock |
-
1989
- 1989-09-07 US US07/404,247 patent/US5045181A/en not_active Expired - Fee Related
-
1990
- 1990-08-29 CA CA 2024233 patent/CA2024233C/en not_active Expired - Fee Related
- 1990-09-04 BR BR9004388A patent/BR9004388A/pt not_active Application Discontinuation
- 1990-09-06 JP JP2234614A patent/JPH0397988A/ja active Granted
- 1990-09-06 FI FI904396A patent/FI95604C/fi not_active IP Right Cessation
- 1990-09-06 KR KR1019900014041A patent/KR0183400B1/ko not_active Expired - Fee Related
- 1990-09-06 EP EP19900630152 patent/EP0417030B1/en not_active Expired - Lifetime
- 1990-09-06 DE DE69010123T patent/DE69010123T2/de not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE69010123T2 (de) | 1994-10-06 |
| JPH0397988A (ja) | 1991-04-23 |
| BR9004388A (pt) | 1991-09-10 |
| EP0417030A1 (en) | 1991-03-13 |
| KR0183400B1 (ko) | 1999-05-15 |
| KR910006567A (ko) | 1991-04-29 |
| US5045181A (en) | 1991-09-03 |
| FI95604C (fi) | 1996-02-26 |
| EP0417030B1 (en) | 1994-06-22 |
| FI904396A0 (fi) | 1990-09-06 |
| DE69010123D1 (de) | 1994-07-28 |
| JPH0366436B2 (Direct) | 1991-10-17 |
| CA2024233A1 (en) | 1991-03-08 |
| FI95604B (fi) | 1995-11-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |