SE8603958L - BLACK BLOOD GASING - Google Patents
BLACK BLOOD GASINGInfo
- Publication number
- SE8603958L SE8603958L SE8603958A SE8603958A SE8603958L SE 8603958 L SE8603958 L SE 8603958L SE 8603958 A SE8603958 A SE 8603958A SE 8603958 A SE8603958 A SE 8603958A SE 8603958 L SE8603958 L SE 8603958L
- Authority
- SE
- Sweden
- Prior art keywords
- pool
- molten salt
- zone
- black liquor
- oxygen
- 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
- D21C11/12—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
Landscapes
- Paper (AREA)
- Devices For Medical Bathing And Washing (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
85R045 A concentrated aqueous black liquor containing carbonaceous material and alkali metal sulfur compounds is treated in a gasifier vessel containing a relatively shallow molten salt pool at its bottom to form a combustible gas and a sulfide-rich melt. The gasifier vessel, which is preferably pressurized, has a black liquor drying zone at its upper part, a black liquor solids gasification zone located below the drying zone, and a molten salt sulfur reduction zone which comprises the molten salt pool. A first portion of an oxygen-containing gas is introduced into the gas space in the gasification zone immediately above the molten salt pool. The remainder of the oxygen-containing gas is introduced into the molten salt pool in an amount sufficient to cause gasification of carbonaceous material entering the pool from the gasification zone but not sufficient to create oxidizing conditions in the pool. The total amount of the oxygen-containing gas introduced both above the pool and into the pool constitutes between 25 and 55% of the amount required for complete combustion of the black liquor feed. A combustible gas is withdrawn from an upper portion of the drying zone, and a melt in which the sulfur content is predominantly in the form of alkali metal sulfide is withdrawn from the molten salt sulfur reduction zone. 4055P
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/779,321 US4682985A (en) | 1983-04-21 | 1985-09-23 | Gasification of black liquor |
Publications (3)
Publication Number | Publication Date |
---|---|
SE8603958D0 SE8603958D0 (en) | 1986-09-19 |
SE8603958L true SE8603958L (en) | 1987-03-24 |
SE466920B SE466920B (en) | 1992-04-27 |
Family
ID=25116027
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8603958A SE466920B (en) | 1985-09-23 | 1986-09-19 | BLACK GAS PRESERVATION |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPH0819632B2 (en) |
CA (1) | CA1274355A (en) |
FI (1) | FI85516C (en) |
NO (1) | NO173457C (en) |
SE (1) | SE466920B (en) |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1222604A (en) * | 1983-04-18 | 1987-06-09 | Arthur L. Kohl | Black liquor gasification process |
-
1986
- 1986-06-27 CA CA000512643A patent/CA1274355A/en not_active Expired - Fee Related
- 1986-08-13 FI FI863287A patent/FI85516C/en not_active IP Right Cessation
- 1986-09-19 SE SE8603958A patent/SE466920B/en not_active IP Right Cessation
- 1986-09-22 JP JP61222234A patent/JPH0819632B2/en not_active Expired - Lifetime
- 1986-09-22 NO NO863768A patent/NO173457C/en unknown
Also Published As
Publication number | Publication date |
---|---|
JPS6269894A (en) | 1987-03-31 |
CA1274355A (en) | 1990-09-25 |
FI863287A0 (en) | 1986-08-13 |
FI85516B (en) | 1992-01-15 |
NO173457B (en) | 1993-09-06 |
FI863287A (en) | 1987-03-24 |
JPH0819632B2 (en) | 1996-02-28 |
NO863768D0 (en) | 1986-09-22 |
SE466920B (en) | 1992-04-27 |
NO863768L (en) | 1987-03-24 |
FI85516C (en) | 1992-04-27 |
SE8603958D0 (en) | 1986-09-19 |
NO173457C (en) | 1993-12-15 |
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