SE9601099L - Gasification of black liquor at a pressure exceeding 5 bar - Google Patents
Gasification of black liquor at a pressure exceeding 5 barInfo
- Publication number
- SE9601099L SE9601099L SE9601099A SE9601099A SE9601099L SE 9601099 L SE9601099 L SE 9601099L SE 9601099 A SE9601099 A SE 9601099A SE 9601099 A SE9601099 A SE 9601099A SE 9601099 L SE9601099 L SE 9601099L
- Authority
- SE
- Sweden
- Prior art keywords
- black liquor
- smelt
- gas
- bar
- pressure exceeding
- Prior art date
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.
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 |
BR9708319A BR9708319A (en) | 1996-03-22 | 1997-03-19 | Process for extracting chemicals and liquor energy already consumed from cellulose |
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 |
EP97914715A EP0888476A1 (en) | 1996-03-22 | 1997-03-19 | Process for extracting chemicals and energy from cellulose spent liquor |
PCT/SE1997/000452 WO1997036043A1 (en) | 1996-03-22 | 1997-03-19 | Process for extracting chemicals and energy from cellulose spent liquor |
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 SE9601099D0 (en) | 1996-03-22 |
SE9601099L true 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)
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)
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 |
-
1996
- 1996-03-22 SE SE9601099A patent/SE9601099L/en not_active Application Discontinuation
-
1997
- 1997-03-19 WO PCT/SE1997/000452 patent/WO1997036043A1/en not_active Application Discontinuation
- 1997-03-19 CA CA002247815A patent/CA2247815A1/en not_active Abandoned
- 1997-03-19 JP JP9534312A patent/JP2000507318A/en active Pending
- 1997-03-19 EP EP97914715A patent/EP0888476A1/en not_active Withdrawn
- 1997-03-19 BR BR9708319A patent/BR9708319A/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
EP0888476A1 (en) | 1999-01-07 |
JP2000507318A (en) | 2000-06-13 |
WO1997036043A1 (en) | 1997-10-02 |
SE9601099D0 (en) | 1996-03-22 |
BR9708319A (en) | 1999-08-03 |
CA2247815A1 (en) | 1997-10-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NAV | Patent application has lapsed |
Ref document number: 9601099-6 |