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SE9601099D0 - Process for extraction of chemicals and energy from cellulose effluent - Google Patents

Process for extraction of chemicals and energy from cellulose effluent

Info

Publication number
SE9601099D0
SE9601099D0 SE9601099A SE9601099A SE9601099D0 SE 9601099 D0 SE9601099 D0 SE 9601099D0 SE 9601099 A SE9601099 A SE 9601099A SE 9601099 A SE9601099 A SE 9601099A SE 9601099 D0 SE9601099 D0 SE 9601099D0
Authority
SE
Sweden
Prior art keywords
smelt
energy
gas
black liquor
liquor
Prior art date
Application number
SE9601099A
Other languages
Swedish (sv)
Other versions
SE9601099L (en
Inventor
Jan-Erik Kignell
Original Assignee
Kvaerner Pulping Tech
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 Kvaerner Pulping Tech filed Critical Kvaerner Pulping Tech
Priority to SE9601099A priority Critical patent/SE9601099L/en
Publication of SE9601099D0 publication Critical patent/SE9601099D0/en
Priority to PCT/SE1997/000452 priority patent/WO1997036043A1/en
Priority to BR9708319A priority patent/BR9708319A/en
Priority to EP97914715A priority patent/EP0888476A1/en
Priority to CA002247815A priority patent/CA2247815A1/en
Priority to JP9534312A priority patent/JP2000507318A/en
Publication of SE9601099L publication Critical patent/SE9601099L/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
    • 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
    • D21C11/0064—Aspects concerning the production and the treatment of green and white liquors, e.g. causticizing green liquor
    • 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
    • D21C11/12—Combustion of pulp liquors
    • D21C11/125—Decomposition of the pulp liquors in reducing atmosphere or in the absence of oxidants, i.e. gasification or pyrolysis
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/40—Production or processing of lime, e.g. limestone regeneration of lime in pulp and sugar mills

Landscapes

  • Paper (AREA)

Abstract

Process for extracting chemicals and energy from black liquor which is obtained during the production of paper pulp by means of the chemical digestion of fibre raw material, in which the black liquor is gasified in a reactor at a pressure exceeding 5 bar, with the products formed principally consisting of CO, CO2, CH4, H2 and H2S in gas form and Na2CO3, NaOH and Na2S in the form of drops of smelt, and the resulting mixture of gas and smelt is cooled by means of direct contact with a water-containing liquid, in association with which the smelt drops are separated off and dissolved with the formation of green liquor, after which the gas is separated off for energy extraction. In the process, the said black liquor is supplied to the reactor at a dry substance content which exceeds 80 %. A major portion of the green liquor which is formed is causticized with an optimized, low consumption of lime.
SE9601099A 1996-03-22 1996-03-22 Gasification of black liquor at a pressure exceeding 5 bar SE9601099L (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
SE9601099A SE9601099L (en) 1996-03-22 1996-03-22 Gasification of black liquor at a pressure exceeding 5 bar
PCT/SE1997/000452 WO1997036043A1 (en) 1996-03-22 1997-03-19 Process for extracting chemicals and energy from cellulose spent liquor
BR9708319A BR9708319A (en) 1996-03-22 1997-03-19 Process for extracting chemicals and liquor energy already consumed from cellulose
EP97914715A EP0888476A1 (en) 1996-03-22 1997-03-19 Process for extracting chemicals and energy from cellulose spent liquor
CA002247815A CA2247815A1 (en) 1996-03-22 1997-03-19 Process for extracting chemicals and energy from cellulose spent liquor
JP9534312A JP2000507318A (en) 1996-03-22 1997-03-19 Method for extracting chemicals and energy from cellulose waste liquid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9601099A SE9601099L (en) 1996-03-22 1996-03-22 Gasification of black liquor at a pressure exceeding 5 bar

Publications (2)

Publication Number Publication Date
SE9601099D0 true SE9601099D0 (en) 1996-03-22
SE9601099L SE9601099L (en) 1997-09-23

Family

ID=20401895

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9601099A SE9601099L (en) 1996-03-22 1996-03-22 Gasification of black liquor at a pressure exceeding 5 bar

Country Status (6)

Country Link
EP (1) EP0888476A1 (en)
JP (1) JP2000507318A (en)
BR (1) BR9708319A (en)
CA (1) CA2247815A1 (en)
SE (1) SE9601099L (en)
WO (1) WO1997036043A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE535117C2 (en) * 2010-03-30 2012-04-17 Chemrec Ab Gasification of sulphite thick liquor

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE448173B (en) * 1985-06-03 1987-01-26 Croon Inventor Ab PROCEDURE FOR THE RECOVERY OF CELLULOSA DISPOSAL CHEMICALS BY PYROLYSIS
SE468600B (en) * 1991-12-16 1993-02-15 Chemrec Ab SET TO MAKE HIGH SULFIDITY COOKIES

Also Published As

Publication number Publication date
BR9708319A (en) 1999-08-03
JP2000507318A (en) 2000-06-13
SE9601099L (en) 1997-09-23
CA2247815A1 (en) 1997-10-02
EP0888476A1 (en) 1999-01-07
WO1997036043A1 (en) 1997-10-02

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