SE9101278L - PROCEDURES FOR TREATMENT AND RECOVERY OF PINK WASTE FROM MASS FACTORIES - Google Patents

PROCEDURES FOR TREATMENT AND RECOVERY OF PINK WASTE FROM MASS FACTORIES

Info

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
Application number
SE9101278A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE9101278D0 (en
SE507066C2 (en
Inventor
B Myreen
Original Assignee
Poeyry Jaako 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 Poeyry Jaako Oy filed Critical Poeyry Jaako Oy
Publication of SE9101278D0 publication Critical patent/SE9101278D0/en
Publication of SE9101278L publication Critical patent/SE9101278L/en
Publication of SE507066C2 publication Critical patent/SE507066C2/en

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.
SE9101278A 1990-05-04 1991-04-26 Procedure for the treatment and recovery of bleach effluent from pulp mills SE507066C2 (en)

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)

* Cited by examiner, † Cited by third party
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)

* 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.
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

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