CA2069107A1 - Process for the preparation of cooking liquors having high sulphidity for sulphate pulp cooking - Google Patents

Process for the preparation of cooking liquors having high sulphidity for sulphate pulp cooking

Info

Publication number
CA2069107A1
CA2069107A1 CA002069107A CA2069107A CA2069107A1 CA 2069107 A1 CA2069107 A1 CA 2069107A1 CA 002069107 A CA002069107 A CA 002069107A CA 2069107 A CA2069107 A CA 2069107A CA 2069107 A1 CA2069107 A1 CA 2069107A1
Authority
CA
Canada
Prior art keywords
cooking
sulphur
sodium
melt
fed
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
CA002069107A
Other languages
French (fr)
Other versions
CA2069107C (en
Inventor
Mats-Olov Hedblom
Hans Lindberg
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.)
Chemrec AB
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2069107A1 publication Critical patent/CA2069107A1/en
Application granted granted Critical
Publication of CA2069107C publication Critical patent/CA2069107C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • 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
    • D21C11/04—Regeneration of pulp liquors or effluent waste waters of alkali lye

Landscapes

  • Paper (AREA)
  • Commercial Cooking Devices (AREA)

Abstract

An improvement is provided in a process for preparing, under reducing conditions, cooking liquors for sulphate pulp cooking. The black liquor which is formed in the cooking process is fed, after evaporation, completely or partly to a reactor operating at increased temperature. The increased temperature is obtained by energy which is supplied from an external heat source and/or release of energy from the black liquor, thereby to form a melt of sodium sulphide. The melt then is withdrawn to be further processed to cooking liquor.
The melt, and the whole or part of at least one of sulphur-containing, sulphur-and sodium-containing materials which are present in the pulp mill including sulphur-containing, and sodium- and sulphur-containing make-up chemicals used for the total chemicals balance of the pulp mill, are fed to the reactor in such a way that the mole ratio of sodium to sulphur in the total mixture which is fed to the reactor is within the range of from 1.5 to 4.
CA002069107A 1989-11-23 1990-11-21 Process for the preparation of cooking liquors having high sulphidity for sulphate pulp cooking Expired - Lifetime CA2069107C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE8903953-1 1989-11-23
SE8903953A SE465039B (en) 1989-11-23 1989-11-23 MADE TO MAKE SUBSTANCES WITH HIGH SULFIDITY BEFORE SULFAT PREPARATION
PCT/SE1990/000751 WO1991008337A1 (en) 1989-11-23 1990-11-21 A process for the preparation of cooking liquors having high sulphidity for sulphate pulp cooking

Publications (2)

Publication Number Publication Date
CA2069107A1 true CA2069107A1 (en) 1991-05-24
CA2069107C CA2069107C (en) 2002-04-09

Family

ID=20377574

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002069107A Expired - Lifetime CA2069107C (en) 1989-11-23 1990-11-21 Process for the preparation of cooking liquors having high sulphidity for sulphate pulp cooking

Country Status (18)

Country Link
EP (1) EP0502052B1 (en)
JP (1) JP2815701B2 (en)
CN (1) CN1030003C (en)
AR (1) AR243947A1 (en)
AT (1) ATE112595T1 (en)
AU (1) AU662882B2 (en)
BR (1) BR9007837A (en)
CA (1) CA2069107C (en)
DE (1) DE69013159T2 (en)
ES (1) ES2062569T3 (en)
FI (1) FI103902B1 (en)
MX (1) MX173408B (en)
MY (1) MY104532A (en)
NO (1) NO176109C (en)
RU (1) RU2067637C1 (en)
SE (1) SE465039B (en)
WO (1) WO1991008337A1 (en)
ZA (1) ZA909337B (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5326433A (en) * 1991-02-06 1994-07-05 Ahlstrom Recovery Inc. Multi-level sulfide content white liquor production and utilization in cellulose pulping
US5213663A (en) * 1991-07-22 1993-05-25 The Foxboro Company Method for controlling the sodium carbonate concentration of green liquor in the dissolving tank
FI92725C (en) * 1991-09-09 1994-12-27 Ahlstroem Oy Process for preparing boiling liquid
FI914586A (en) * 1991-09-27 1993-03-28 Ahlstroem Oy FOERFARANDE FOER FOERMINSKNING AV ASKLASTEN AV EN CELLUFABRIKS PANNANLAEGGNING
SE9103707L (en) * 1991-12-16 1993-02-15 Chemrec Ab SET TO MAKE HIGH SULFIDITY COOKIES
SE9300199L (en) * 1993-01-25 1994-07-26 Kvaerner Pulping Tech Method for recycling cellulosic liquids
US6030493A (en) 1994-11-04 2000-02-29 Kvaerner Pulping, Ab Process for recovering chemicals and energy from cellulose spent liquor using multiple gasifiers
SE518735C2 (en) * 1999-10-13 2002-11-12 Chemrec Ab Process and apparatus for the extraction of chemicals in connection with gasification of residues from pulp production
CN1087045C (en) * 2000-03-17 2002-07-03 中国科学院生态环境研究中心 Cyclic process for treating black paper-making liquid of alkali pulping to recover useful resource
CL2010001609A1 (en) * 2010-12-29 2011-03-18 Univ De Concepcion 50% Process for obtaining tall oil util that comprises the reaction between a solution of sodium sesquisulfate and tall oil soap.
CN103510418B (en) * 2012-06-25 2016-03-30 北京英力生科新材料技术有限公司 A kind of without black liquor chemical pulping process
CN103726375A (en) * 2013-12-30 2014-04-16 中冶美利纸业股份有限公司 Sulfite pulping process of salix mongolica
CN103726376A (en) * 2013-12-30 2014-04-16 中冶美利纸业股份有限公司 Intermittent low-temperature quick pulping process for broad-leaf wood
FI130066B (en) * 2019-02-13 2023-01-31 Andritz Oy A method of replacing sodium losses in a pulp mill, and a method of producing bleached cellulosic pulp

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4098639A (en) * 1975-06-17 1978-07-04 Mo Och Domsjo Aktiebolag Process for reducing the requirement of fresh chemicals without increasing emissions in the pulping of cellulosic material
SE447400B (en) * 1985-03-26 1986-11-10 Skf Steel Eng Ab SET AND DEVICE FOR CHEMICAL EQUIPMENT OF MASS WASTE IN CONVENTIONAL SODAPANNA
PT83761B (en) * 1985-11-19 1989-06-30 Schering Biotech Corp METHOD FOR THE PRODUCTION OF INTERLEUQUIN-4 OF MAMIFERO
JPS62166881A (en) * 1986-01-16 1987-07-23 Michio Matsuhashi Periplasmic protein-secreting variant strain of escherichia coli
AU589540B2 (en) * 1986-08-14 1989-10-12 Alby Klorat Ab A process for the preparation of sulphide-free alkali liquor
JPS63237790A (en) * 1987-03-27 1988-10-04 Toyo Jozo Co Ltd Human superoxide dimustase using ompa signal peptide and extracellular secretion by gram negative bacterium

Also Published As

Publication number Publication date
WO1991008337A1 (en) 1991-06-13
RU2067637C1 (en) 1996-10-10
MY104532A (en) 1994-04-30
BR9007837A (en) 1992-08-25
EP0502052A1 (en) 1992-09-09
FI103902B (en) 1999-10-15
AR243947A1 (en) 1993-09-30
EP0502052B1 (en) 1994-10-05
NO921962D0 (en) 1992-05-19
ATE112595T1 (en) 1994-10-15
CN1051953A (en) 1991-06-05
FI922288A (en) 1992-05-20
AU662882B2 (en) 1995-09-21
NO176109B (en) 1994-10-24
FI922288A0 (en) 1992-05-20
MX173408B (en) 1994-03-01
AU6883691A (en) 1991-06-26
JP2815701B2 (en) 1998-10-27
DE69013159T2 (en) 1995-03-09
CN1030003C (en) 1995-10-11
DE69013159D1 (en) 1994-11-10
ZA909337B (en) 1991-09-25
SE465039B (en) 1991-07-15
CA2069107C (en) 2002-04-09
FI103902B1 (en) 1999-10-15
ES2062569T3 (en) 1994-12-16
NO921962L (en) 1992-05-20
JPH05502274A (en) 1993-04-22
NO176109C (en) 1995-02-01
SE8903953L (en) 1991-05-24
SE8903953D0 (en) 1989-11-23

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Legal Events

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