SE7612470L - PROCEDURE FOR REMOVING SULFUR Dioxide FROM A GAS CURRENT - Google Patents
PROCEDURE FOR REMOVING SULFUR Dioxide FROM A GAS CURRENTInfo
- Publication number
- SE7612470L SE7612470L SE7612470A SE7612470A SE7612470L SE 7612470 L SE7612470 L SE 7612470L SE 7612470 A SE7612470 A SE 7612470A SE 7612470 A SE7612470 A SE 7612470A SE 7612470 L SE7612470 L SE 7612470L
- Authority
- SE
- Sweden
- Prior art keywords
- sulfur dioxide
- sodium sulfate
- weight percent
- solution
- liquid
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/48—Sulfur dioxide; Sulfurous acid
- C01B17/50—Preparation of sulfur dioxide
- C01B17/60—Isolation of sulfur dioxide from gases
Abstract
Sodium sulfate is purged from a sulfur dioxide removal system involving contact of a sulfur dioxide-containing gas with a solution containing sodium sulfite to absorb sulfur dioxide from the gas. The spent absorbing solution is regenerated by desorbing sulfur dixoide and recycled for further use. To avoid an unduly large build-up of sulfate in the system, at least a portion of the absorbing-desorbing medium, e.g. spent absorbing solution, containing sodium sulfate and a relatively large amount of sodium bisulfite is treated to reduce the amount of water in the medium so that there is precipitated therefrom up to about 10 weight percent undissolved solids containing sodium sulfate in greater concentration than would otherwise be obtained in the absorption-desorption cycle. The insolubles containing sodium sulfate are removed from the liquid, and the liquid can be returned to the sulfur dioxide removal system. In one preferred aspect of the invention, up to about 75 weight percent of the entire stream of spent absorbing solution is treated to form from this solution a slurry having up to about 10 weight percent undissolved solids which are relatively rich in sodium sulfate content. In the invention the sodium sulfate-containing solids can be separated from the liquid which is then subjected to a desorption operation to produce sulfur dioxide, and the latter operation can be conducted while maintaining at least about 25 weight percent undissolved solids in the desorption zone.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US63050375A | 1975-11-10 | 1975-11-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE7612470L true SE7612470L (en) | 1977-05-11 |
| SE421407B SE421407B (en) | 1981-12-21 |
Family
ID=24527439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE7612470A SE421407B (en) | 1975-11-10 | 1976-11-09 | PROCEDURE FOR DISPOSAL OF SULFUR Dioxide FROM A GAS |
Country Status (15)
| Country | Link |
|---|---|
| JP (1) | JPS5261173A (en) |
| AT (1) | AT367653B (en) |
| BE (1) | BE848119A (en) |
| BR (1) | BR7607526A (en) |
| CA (1) | CA1079492A (en) |
| DE (1) | DE2651045C2 (en) |
| ES (1) | ES453174A1 (en) |
| FR (1) | FR2330439A1 (en) |
| GB (1) | GB1557294A (en) |
| IT (1) | IT1070093B (en) |
| NL (1) | NL7612494A (en) |
| NO (1) | NO147939C (en) |
| SE (1) | SE421407B (en) |
| SU (1) | SU950187A3 (en) |
| ZA (1) | ZA766140B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4177244A (en) * | 1976-07-24 | 1979-12-04 | Ullrich Neumann | Process for purge stream treatment in removal of sulfur dioxide |
| US4708856A (en) * | 1986-03-03 | 1987-11-24 | Norton Company | Liquid-gas absorption process |
| CN105833667A (en) * | 2016-05-27 | 2016-08-10 | 四川益能康生环保科技有限公司 | Renewable adsorbent for removing sulfur dioxide |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3653812A (en) * | 1969-07-18 | 1972-04-04 | Wellman Lord Inc | Process for removal of sulfur dioxide from gas streams |
| US3971844A (en) * | 1974-02-19 | 1976-07-27 | Davy Powergas Inc. | Method for removing sodium sulfate from aqueous solutions |
-
1976
- 1976-10-14 ZA ZA00766140A patent/ZA766140B/en unknown
- 1976-11-08 AT AT0829076A patent/AT367653B/en not_active IP Right Cessation
- 1976-11-08 CA CA265,157A patent/CA1079492A/en not_active Expired
- 1976-11-08 BE BE172178A patent/BE848119A/en not_active IP Right Cessation
- 1976-11-08 GB GB46358/76A patent/GB1557294A/en not_active Expired
- 1976-11-09 SE SE7612470A patent/SE421407B/en not_active IP Right Cessation
- 1976-11-09 IT IT69677/76A patent/IT1070093B/en active
- 1976-11-09 DE DE2651045A patent/DE2651045C2/en not_active Expired
- 1976-11-09 FR FR7633713A patent/FR2330439A1/en active Granted
- 1976-11-09 NO NO763810A patent/NO147939C/en unknown
- 1976-11-10 SU SU762417313A patent/SU950187A3/en active
- 1976-11-10 JP JP51135131A patent/JPS5261173A/en active Granted
- 1976-11-10 ES ES453174A patent/ES453174A1/en not_active Expired
- 1976-11-10 BR BR7607526A patent/BR7607526A/en unknown
- 1976-11-10 NL NL7612494A patent/NL7612494A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| ATA829076A (en) | 1981-12-15 |
| NO147939C (en) | 1983-07-13 |
| DE2651045C2 (en) | 1986-02-20 |
| ZA766140B (en) | 1978-05-30 |
| IT1070093B (en) | 1985-03-25 |
| ES453174A1 (en) | 1977-11-01 |
| BR7607526A (en) | 1977-09-20 |
| JPS5261173A (en) | 1977-05-20 |
| NL7612494A (en) | 1977-05-12 |
| GB1557294A (en) | 1979-12-05 |
| FR2330439B1 (en) | 1982-10-08 |
| SU950187A3 (en) | 1982-08-07 |
| DE2651045A1 (en) | 1977-05-12 |
| JPS6339284B2 (en) | 1988-08-04 |
| CA1079492A (en) | 1980-06-17 |
| NO147939B (en) | 1983-04-05 |
| FR2330439A1 (en) | 1977-06-03 |
| NO763810L (en) | 1977-05-11 |
| BE848119A (en) | 1977-03-01 |
| SE421407B (en) | 1981-12-21 |
| AT367653B (en) | 1982-07-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES399876A1 (en) | Combined sulfur oxides acceptance-sulfur recovery process | |
| US1271899A (en) | Method of recovering sulfur dioxid from furnace-gases. | |
| FR2276080A1 (en) | Removal of sulphur dioxide from gases | |
| ATE119060T1 (en) | REMOVAL AND RECOVERY OF SULFUR DIOXIDE FROM GAS STREAMS. | |
| GB1469693A (en) | Selective removal of hydrogen sulphide from gaseous mixtures | |
| ES453391A1 (en) | Removal of CO2 and/or H2S and/or COS from gases containing these constituents | |
| NO833565L (en) | PROCEDURE FOR AA REMOVE CO2 AND EVEN H2S FROM GROUND GASES | |
| ES434864A1 (en) | Method for removing sodium sulfate from aqueous solutions | |
| US3883639A (en) | Method of removing sulfur-containing gases from waste gas | |
| EP0223211A3 (en) | Sulfur dioxide removal process | |
| US4366134A (en) | Flue gas desulfurization process | |
| GB1389372A (en) | Removal of sulphur dioxide from waste gases | |
| SE7612470L (en) | PROCEDURE FOR REMOVING SULFUR Dioxide FROM A GAS CURRENT | |
| CN103752135B (en) | A kind of purification method of carbon black plant tail gas | |
| ES452507A1 (en) | Process for enriching acid gases in hydrogen sulphide | |
| JPS6115719A (en) | Treatment of exhaust gas | |
| ES400063A1 (en) | Procedure to remove sulfur dioxide from a gas that contains it. (Machine-translation by Google Translate, not legally binding) | |
| US1795120A (en) | Process for the simultaneous absorption of ammonia and hydrogen sulfide from industrial gases | |
| DE3370765D1 (en) | Process for the removal of co2 and/or h2s from gases | |
| US3773893A (en) | Process for removing sulfur dioxide from gas streams using molten thiocyanates | |
| SU854425A1 (en) | Method of removing hydrogen sulfide from natural gases | |
| NL7507553A (en) | Sulphur dioxide removal from flue gas - with Claus unit off gas reduced and recycled | |
| GB1023913A (en) | An improved process for the manufacture of sodium carbonate | |
| SU1115785A1 (en) | Method of cleaning gas from hydrogen sulphide | |
| GB794389A (en) | Improvements in or relating to removing an acidic component from a fluid stream |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NAL | Patent in force |
Ref document number: 7612470-0 Format of ref document f/p: F |
|
| NUG | Patent has lapsed |
Ref document number: 7612470-0 Format of ref document f/p: F |