CA2041536A1 - Method for treatment and recycling of pulp mill bleach plant effluents - Google Patents

Method for treatment and recycling of pulp mill bleach plant effluents

Info

Publication number
CA2041536A1
CA2041536A1 CA 2041536 CA2041536A CA2041536A1 CA 2041536 A1 CA2041536 A1 CA 2041536A1 CA 2041536 CA2041536 CA 2041536 CA 2041536 A CA2041536 A CA 2041536A CA 2041536 A1 CA2041536 A1 CA 2041536A1
Authority
CA
Canada
Prior art keywords
bleach
pulp
recycling
treatment
chlorine
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.)
Granted
Application number
CA 2041536
Other languages
French (fr)
Other versions
CA2041536C (en
Inventor
Bertel Myreen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jaakko Poyry Oy
Original Assignee
Bertel Myreen
Jaakko Poyry Oy
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bertel Myreen, Jaakko Poyry Oy filed Critical Bertel Myreen
Publication of CA2041536A1 publication Critical patent/CA2041536A1/en
Application granted granted Critical
Publication of CA2041536C publication Critical patent/CA2041536C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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

Abstract The invention relates to a method for treatment and recycling of pulp mill bleach plant effluents. Chlorine-containing 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°C.
CA 2041536 1990-05-04 1991-04-30 Method for treatment and recycling of pulp mill bleach plant effluents Expired - Fee Related CA2041536C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI902261 1990-05-04
FI902261A FI85293C (en) 1990-05-04 1990-05-04 FOERFARANDE FOER RENING OCH AOTERFOERING AV CELLULOSAFABRIKERS BLEKERIAVATTEN.

Publications (2)

Publication Number Publication Date
CA2041536A1 true CA2041536A1 (en) 1991-11-05
CA2041536C CA2041536C (en) 1997-12-09

Family

ID=8530380

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2041536 Expired - Fee Related CA2041536C (en) 1990-05-04 1991-04-30 Method for treatment and recycling of pulp mill bleach plant effluents

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)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994003673A1 (en) * 1992-07-30 1994-02-17 Kamyr, Inc. Zero discharge pulp mill
US5300191A (en) * 1992-07-30 1994-04-05 Kamyr, Inc. Chlorine dioxide generation for a zero discharge pulp mill
WO1994020675A1 (en) * 1993-03-02 1994-09-15 Kamyr, Inc. Zero discharge mill distillation, salt recovery, and water management
WO1995006774A1 (en) * 1993-08-31 1995-03-09 Kamyr, Inc. Minimum adverse environmental pulp mill with feed to chlorate manufacture
AU671844B2 (en) * 1992-07-20 1996-09-12 Unilever Plc Manufacture of gas hydrates
US5628872A (en) * 1993-10-22 1997-05-13 Kanyr Ab Method for bleaching pulp with hydrogen peroxide recovered from cellulosic spent liquor
EP0719359B1 (en) * 1993-08-31 1998-12-09 Ahlstrom Machinery Oy Minimum adverse environmental impact pulp mill
WO2000043589A1 (en) * 1999-01-22 2000-07-27 Andritz-Ahlstrom Oy Treatment of recirculated filtrates in pulp production

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10506964A (en) * 1994-10-05 1998-07-07 エカ ケミカルズ アクチェボラーグ Method for treating process water in pulp production
GB0301183D0 (en) 2003-01-18 2003-02-19 Rolls Royce Plc Electrostatic sensors
SE0300276L (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)

* Cited by examiner, † Cited by third party
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.
AU619580B2 (en) * 1988-08-23 1992-01-30 Sappi Limited Elimination of bleach effluents
WO1990001977A1 (en) * 1988-08-26 1990-03-08 Aquamax Oy A distillation apparatus

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU671844B2 (en) * 1992-07-20 1996-09-12 Unilever Plc Manufacture of gas hydrates
US5518583A (en) * 1992-07-30 1996-05-21 A. Ahlstrom Corporation Zero discharge mill distillation, salt recovery, and water management
US5300191A (en) * 1992-07-30 1994-04-05 Kamyr, Inc. Chlorine dioxide generation for a zero discharge pulp mill
WO1994003673A1 (en) * 1992-07-30 1994-02-17 Kamyr, Inc. Zero discharge pulp mill
US5374333A (en) * 1992-07-30 1994-12-20 Kamyr, Inc. Method for minimizing pulp mill effluents
AU666204B2 (en) * 1992-07-30 1996-02-01 Kamyr Inc. Zero discharge pulp mill
US5439555A (en) * 1992-07-30 1995-08-08 Kamyr, Inc. Minimum adverse environmental pulp with feed to chlorate manufacture
US5547543A (en) * 1992-07-30 1996-08-20 Ahlstrom Machinery Inc. Apparatus for minimizing effluent discharges and recovering chemicals in a pulp mill
WO1994015020A1 (en) * 1992-12-23 1994-07-07 Kamyr, Inc. Chlorine dioxide generation for a zero discharge pulp mill
EP0728864A2 (en) * 1993-03-02 1996-08-28 Kamyr Inc. Zero discharge pulp mill cascading water management
WO1994020675A1 (en) * 1993-03-02 1994-09-15 Kamyr, Inc. Zero discharge mill distillation, salt recovery, and water management
EP0728864A3 (en) * 1993-03-02 1999-07-28 Ahlstrom Machinery Oy Zero discharge pulp mill cascading water management
WO1995006774A1 (en) * 1993-08-31 1995-03-09 Kamyr, Inc. Minimum adverse environmental pulp mill with feed to chlorate manufacture
EP0719359B1 (en) * 1993-08-31 1998-12-09 Ahlstrom Machinery Oy Minimum adverse environmental impact pulp mill
US5628872A (en) * 1993-10-22 1997-05-13 Kanyr Ab Method for bleaching pulp with hydrogen peroxide recovered from cellulosic spent liquor
WO2000043589A1 (en) * 1999-01-22 2000-07-27 Andritz-Ahlstrom Oy Treatment of recirculated filtrates in pulp production

Also Published As

Publication number Publication date
FI85293B (en) 1991-12-13
FI902261A0 (en) 1990-05-04
FI85293C (en) 1992-03-25
SE9101278D0 (en) 1991-04-26
SE9101278L (en) 1991-11-05
CA2041536C (en) 1997-12-09
JPH06257088A (en) 1994-09-13
ES2034879B1 (en) 1993-11-01
JPH089837B2 (en) 1996-01-31
AU7627891A (en) 1991-11-07
ES2034879A1 (en) 1993-04-01
BR9101745A (en) 1991-12-10
AU634381B2 (en) 1993-02-18
FI902261A (en) 1991-11-05
SE507066C2 (en) 1998-03-23

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Legal Events

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EEER Examination request
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