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SE9402197D0 - Process for recovery of chemicals from cellulose waste - Google Patents

Process for recovery of chemicals from cellulose waste

Info

Publication number
SE9402197D0
SE9402197D0 SE9402197A SE9402197A SE9402197D0 SE 9402197 D0 SE9402197 D0 SE 9402197D0 SE 9402197 A SE9402197 A SE 9402197A SE 9402197 A SE9402197 A SE 9402197A SE 9402197 D0 SE9402197 D0 SE 9402197D0
Authority
SE
Sweden
Prior art keywords
gas
stage
liquid bath
smelt
contact
Prior art date
Application number
SE9402197A
Other languages
Swedish (sv)
Other versions
SE9402197L (en
SE502038C2 (en
Inventor
Bengt Nilsson
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 SE9402197A priority Critical patent/SE502038C2/en
Publication of SE9402197D0 publication Critical patent/SE9402197D0/en
Priority to JP8502006A priority patent/JPH10504607A/en
Priority to AU28112/95A priority patent/AU2811295A/en
Priority to PCT/SE1995/000586 priority patent/WO1995035410A1/en
Priority to CA002193516A priority patent/CA2193516C/en
Priority to BR9508080A priority patent/BR9508080A/en
Publication of SE9402197L publication Critical patent/SE9402197L/en
Publication of SE502038C2 publication Critical patent/SE502038C2/en
Priority to FI965088A priority patent/FI118899B/en
Priority to US09/096,506 priority patent/US6062547A/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
    • D21C11/12—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
    • 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
    • D21C11/0071—Treatment of green or white liquors with gases, e.g. with carbon dioxide for carbonation; Expulsion of gaseous compounds, e.g. hydrogen sulfide, from these liquors by this treatment (stripping); Optional separation of solid compounds formed in the liquors by this treatment
    • 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
    • D21C11/06—Treatment of pulp gases; Recovery of the heat content of the gases; Treatment of gases arising from various sources in pulp and paper mills; Regeneration of gaseous SO2, e.g. arising from liquors containing sulfur compounds
    • 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
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Landscapes

  • Paper (AREA)
  • Treating Waste Gases (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

Process for recovering chemicals and energy from black liquor, where the black liquor is gasified with CO, CO2, CH4, H2, and H2S, in gaseous form, and Na2CO3, NaOH and Na2S, in the form of drops of smelt, being principally formed. The mixture of gas and smelt is cooled, in a first stage, by direct contact with a cooling liquid, whereupon a part of the cooling liquid is volatilized, and the smelt drops are separated off and dissolved in the remaining part of the cooling liquid with the formation of a liquid bath (6) of green liquor. In a second stage, the gas is washed and saturated with moisture by direct contact with a washing liquid bath (13). After the gas has been washed in the second stage, energy in the form of thermal energy and condensation heat is recovered from the gas in an indirect condenser (16). The contact between the gas and the liquid bath (6), consisting of green liquor, in the first stage is substantially less than the contact between the gas and the washing liquid bath (13), in the second stage. This is achieved, by the gas in the first stage not being permitted to bubble through the liquid bath (6), consisting of green liquor, in contrast to the second stage, in which the gas is caused to buble through the washing liquid bath (13).
SE9402197A 1994-06-22 1994-06-22 Procedure for washing and cooling gases in the black liquor gasification SE502038C2 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
SE9402197A SE502038C2 (en) 1994-06-22 1994-06-22 Procedure for washing and cooling gases in the black liquor gasification
JP8502006A JPH10504607A (en) 1994-06-22 1995-06-15 Cleaning method of gas formed by gasifying black liquor
AU28112/95A AU2811295A (en) 1994-06-22 1995-06-15 Process for washing gas formed by gasifying black liquor
PCT/SE1995/000586 WO1995035410A1 (en) 1994-06-22 1995-06-15 Process for washing gas formed by gasifying black liquor
CA002193516A CA2193516C (en) 1994-06-22 1995-06-15 Process for washing gas formed by gasifying black liquor
BR9508080A BR9508080A (en) 1994-06-22 1995-06-15 Process for the recovery of chemicals and energy from black liquor
FI965088A FI118899B (en) 1994-06-22 1996-12-18 A method for washing gas formed by gasification of black liquor
US09/096,506 US6062547A (en) 1994-06-22 1998-06-12 Quench vessel for recovering chemicals and energy from spent liquors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9402197A SE502038C2 (en) 1994-06-22 1994-06-22 Procedure for washing and cooling gases in the black liquor gasification

Publications (3)

Publication Number Publication Date
SE9402197D0 true SE9402197D0 (en) 1994-06-22
SE9402197L SE9402197L (en) 1995-07-24
SE502038C2 SE502038C2 (en) 1995-07-24

Family

ID=20394481

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9402197A SE502038C2 (en) 1994-06-22 1994-06-22 Procedure for washing and cooling gases in the black liquor gasification

Country Status (7)

Country Link
JP (1) JPH10504607A (en)
AU (1) AU2811295A (en)
BR (1) BR9508080A (en)
CA (1) CA2193516C (en)
FI (1) FI118899B (en)
SE (1) SE502038C2 (en)
WO (1) WO1995035410A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6238468B1 (en) 1994-11-04 2001-05-29 Kvaerner Pulping Ab Quench vessel

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9701546D0 (en) * 1997-04-24 1997-04-24 Kvaerner Pulping Tech New process
US6062547A (en) * 1994-06-22 2000-05-16 Kvaerner Pulping Ab Quench vessel for recovering chemicals and energy from spent liquors
SE513637C2 (en) * 1999-04-01 2000-10-16 Kvaerner Chemrec Ab Device for gasification of waste water
SE512443C2 (en) 1999-04-01 2000-03-20 Kvaerner Chemrec Ab Process for cooling solid and gaseous material in gasification of effluent
SE514277C2 (en) 1999-06-07 2001-02-05 Kvaerner Chemrec Ab Device for gasification of waste water
SE535117C2 (en) * 2010-03-30 2012-04-17 Chemrec Ab Gasification of sulphite thick liquor
CN103306154A (en) * 2012-03-15 2013-09-18 秦才东 Treatment and utilization method of pulping black 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
SE500263C2 (en) * 1993-03-11 1994-05-24 Chemrec Ab Process for separating sulfur compounds from a carbon dioxide and hydrogen sulfide-containing gas stream

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6238468B1 (en) 1994-11-04 2001-05-29 Kvaerner Pulping Ab Quench vessel

Also Published As

Publication number Publication date
BR9508080A (en) 1997-09-02
WO1995035410A1 (en) 1995-12-28
JPH10504607A (en) 1998-05-06
FI118899B (en) 2008-04-30
SE9402197L (en) 1995-07-24
FI965088A (en) 1996-12-18
CA2193516C (en) 2005-02-08
AU2811295A (en) 1996-01-15
FI965088A0 (en) 1996-12-18
CA2193516A1 (en) 1995-12-28
SE502038C2 (en) 1995-07-24

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Legal Events

Date Code Title Description
NUG Patent has lapsed