SE9101278L - PROCEDURES FOR TREATMENT AND RECOVERY OF PINK WASTE FROM MASS FACTORIES - Google Patents
PROCEDURES FOR TREATMENT AND RECOVERY OF PINK WASTE FROM MASS FACTORIESInfo
- Publication number
- SE9101278L SE9101278L SE9101278A SE9101278A SE9101278L SE 9101278 L SE9101278 L SE 9101278L SE 9101278 A SE9101278 A SE 9101278A SE 9101278 A SE9101278 A SE 9101278A SE 9101278 L SE9101278 L SE 9101278L
- Authority
- SE
- Sweden
- Prior art keywords
- bleach
- pulp
- chemicals
- treatment
- stage
- Prior art date
Links
Classifications
-
- 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
- D21C11/00—Regeneration of pulp liquors or effluent waste waters
- D21C11/10—Concentrating spent liquor by evaporation
Landscapes
- Paper (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Extraction Or Liquid Replacement (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention relates to a method for treatment and recycling of pulp mill bleach plant effluents. Chlorinecontaining chemicals are separated from the fluid obtained from the first bleach stage (DC) implemented with these chlorine-containing bleach chemicals on pulp (2) that has been washed (W) and partially dewatered (P1) whereby the pulp (3) from the mentioned bleach stage (DC), with chlorine-containing bleach chemicals, is dewatered (P2) up to about the same dryness of at least 25 % and at most 35 % as for the mentioned thereto incoming pulp (2) and whereby the fluid from the second dewatering (P2) is recycled to the bleach stage (DC) and the outcoming fluid (9) from the bleach stage (DC) is evaporated (EV) through indirect heating with condensing vapour obtained through recompression of vapour stripped in the evaporation. The dewatering (P1, P2) is preferably performed by pressing out the liquid from the pulp (2, 3) and the evaporation (EV) in several stages connected in parallel or in series at a temperature below 70.degree.C.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI902261A FI85293C (en) | 1990-05-04 | 1990-05-04 | FOERFARANDE FOER RENING OCH AOTERFOERING AV CELLULOSAFABRIKERS BLEKERIAVATTEN. |
Publications (3)
Publication Number | Publication Date |
---|---|
SE9101278D0 SE9101278D0 (en) | 1991-04-26 |
SE9101278L true SE9101278L (en) | 1991-11-05 |
SE507066C2 SE507066C2 (en) | 1998-03-23 |
Family
ID=8530380
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE9101278A SE507066C2 (en) | 1990-05-04 | 1991-04-26 | Procedure for the treatment and recovery of bleach effluent from pulp mills |
Country Status (7)
Country | Link |
---|---|
JP (1) | JPH089837B2 (en) |
AU (1) | AU634381B2 (en) |
BR (1) | BR9101745A (en) |
CA (1) | CA2041536C (en) |
ES (1) | ES2034879B1 (en) |
FI (1) | FI85293C (en) |
SE (1) | SE507066C2 (en) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR950702505A (en) * | 1992-07-20 | 1995-07-29 | 알 브이 테이트 | Manufacture of Gas Hydrates |
US5374333A (en) * | 1992-07-30 | 1994-12-20 | Kamyr, Inc. | Method for minimizing pulp mill effluents |
US5439555A (en) * | 1992-07-30 | 1995-08-08 | Kamyr, Inc. | Minimum adverse environmental pulp with feed to chlorate manufacture |
US5549788A (en) * | 1992-07-30 | 1996-08-27 | A. Ahlstrom Corporation | Minimal effluents discharge pulp mill with chemical recovery |
US5300191A (en) * | 1992-07-30 | 1994-04-05 | Kamyr, Inc. | Chlorine dioxide generation for a zero discharge pulp mill |
US5302246A (en) * | 1992-07-30 | 1994-04-12 | Kamyr, Inc. | Method of managing liquid steams in a pulp mill |
US5628872A (en) * | 1993-10-22 | 1997-05-13 | Kanyr Ab | Method for bleaching pulp with hydrogen peroxide recovered from cellulosic spent liquor |
CA2201117A1 (en) * | 1994-10-05 | 1996-04-18 | Johan Landfors | A process for treatment of effluents from a pulp producing plant |
FI990127A0 (en) * | 1999-01-22 | 1999-01-22 | Ahlstrom Machinery Oy | Process for treating pulp |
GB0301183D0 (en) | 2003-01-18 | 2003-02-19 | Rolls Royce Plc | Electrostatic sensors |
SE521780C2 (en) * | 2003-01-31 | 2003-12-09 | Kvaerner Pulping Tech | Method for bleaching cellulose pulp and bleaching line for this |
FI126551B (en) * | 2009-11-25 | 2017-02-15 | Andritz Oy | A method for treating fluid flows at a pulp mill |
JP7317509B2 (en) * | 2019-01-10 | 2023-07-31 | 日本製紙株式会社 | Method for producing lignin, and lignin-based dispersant |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA973661A (en) * | 1972-09-29 | 1975-09-02 | Pulp And Paper Research Institute Of Canada | Press alkaline extraction of cellulosic pulp |
US4159682A (en) * | 1977-12-01 | 1979-07-03 | Dorr-Oliver Incorporated | Fluid bed combustion with predrying of moist feed using bed sand |
DE3043194A1 (en) * | 1980-11-15 | 1982-07-01 | Hermann Berstorff Maschinenbau Gmbh, 3000 Hannover | DEVICE FOR MECHANICALLY SEPARATING LIQUIDS FROM LIQUIDS-SOLIDS MIXTURES IN A SCREW PRESS |
FI67894C (en) * | 1982-05-21 | 1985-06-10 | Rauma Repola Oy | FOERFARANDE OCH ANORDNING FOER BLEKNING AV FIBERMASSA |
FI77064C (en) * | 1985-04-29 | 1989-01-10 | Tampella Oy Ab | Process for boiling and bleaching cellulose |
NO159494C (en) * | 1986-10-23 | 1989-01-04 | Kvaerner Eureka As | PROCEDURE BY BLACKING CELLULOSMASS OR FRACTION THEREOF, PLANT FOR USE BY IMPLEMENTING THE PROCEDURE. |
NO882815L (en) * | 1988-06-24 | 1989-12-27 | Sigurd Fongen | PROCEDURE FOR CELLULOUS PREPARATION AND DELIGNIFICATION, WHEATING, DE-INKING AND CLEANING OF CELLULOSE FIBER AND DEVICE FOR CARRYING OUT THE PROCEDURE. |
FI893844A (en) * | 1988-08-23 | 1990-02-24 | Sappi Ltd | ELIMINERING AV BLEKNINGSAVLOPPSVAETSKOR. |
JP2972253B2 (en) * | 1988-08-26 | 1999-11-08 | キーラン・コーポレーション・ナムローゼ・フェンノートシャップ | Distillation equipment |
-
1990
- 1990-05-04 FI FI902261A patent/FI85293C/en active IP Right Grant
-
1991
- 1991-04-26 AU AU76278/91A patent/AU634381B2/en not_active Ceased
- 1991-04-26 SE SE9101278A patent/SE507066C2/en not_active IP Right Cessation
- 1991-04-29 ES ES9101076A patent/ES2034879B1/en not_active Expired - Fee Related
- 1991-04-30 BR BR9101745A patent/BR9101745A/en not_active IP Right Cessation
- 1991-04-30 JP JP9857491A patent/JPH089837B2/en not_active Expired - Fee Related
- 1991-04-30 CA CA 2041536 patent/CA2041536C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
FI85293B (en) | 1991-12-13 |
AU7627891A (en) | 1991-11-07 |
FI902261A0 (en) | 1990-05-04 |
JPH089837B2 (en) | 1996-01-31 |
SE9101278D0 (en) | 1991-04-26 |
BR9101745A (en) | 1991-12-10 |
AU634381B2 (en) | 1993-02-18 |
ES2034879A1 (en) | 1993-04-01 |
ES2034879B1 (en) | 1993-11-01 |
SE507066C2 (en) | 1998-03-23 |
JPH06257088A (en) | 1994-09-13 |
FI902261A (en) | 1991-11-05 |
FI85293C (en) | 1992-03-25 |
CA2041536C (en) | 1997-12-09 |
CA2041536A1 (en) | 1991-11-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |