GB371888A - Improved process for the recovery of sulphur dioxide from gas mixtures containing it - Google Patents
Improved process for the recovery of sulphur dioxide from gas mixtures containing itInfo
- Publication number
- GB371888A GB371888A GB290731A GB290731A GB371888A GB 371888 A GB371888 A GB 371888A GB 290731 A GB290731 A GB 290731A GB 290731 A GB290731 A GB 290731A GB 371888 A GB371888 A GB 371888A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aniline
- sulphur dioxide
- solvent
- gas
- washing
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
Classifications
-
- 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
-
- 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
- B01D53/507—Sulfur oxides by treating the gases with other liquids
Abstract
Sulphur dioxide is recovered from gas mixtures containing it by washing them with a substantially anhydrous solvent consisting of aniline or its homologues or N-alkyl derivatives of aniline or their homologues or mixtures thereof, the used solvent being regenerated by the application of heat and reduction of pressure, whereby concentrated sulphur dioxide is obtained. The washing may be effected under increased pressure, say 10 atmospheres, and at as low a temperature as possible without the solvent congealing. The gases to be treated should preferably be preliminarily dried for example by washing with concentrated sulphuric acid. The absorbed gas may also be set free by passing an inert gas or steam through the used solvent preferably at raised temperature. An example describes the absorption of sulphur dioxide by passing gases up a tower in counter current to a mixture of aniline with dimethyl aniline, the used solvent being recirculated after treatment with inert gas or steam in another tower. Traces of solvent may be removed from the gas by passing it over active charcoal. According to the Provisional Specification the aniline derivatives may be mixed with non-volatile organic solvents such as paraffin oil, creosote oil or vegetable oils, an example being dimethyl aniline mixed with paraffin oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB290731A GB371888A (en) | 1931-01-29 | 1931-01-29 | Improved process for the recovery of sulphur dioxide from gas mixtures containing it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB290731A GB371888A (en) | 1931-01-29 | 1931-01-29 | Improved process for the recovery of sulphur dioxide from gas mixtures containing it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB371888A true GB371888A (en) | 1932-04-29 |
Family
ID=9748294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB290731A Expired GB371888A (en) | 1931-01-29 | 1931-01-29 | Improved process for the recovery of sulphur dioxide from gas mixtures containing it |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB371888A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8940258B2 (en) | 2012-05-02 | 2015-01-27 | Mecs, Inc. | Regenerative recovery of contaminants from effluent gases |
| US9266059B2 (en) | 2013-03-15 | 2016-02-23 | Mecs, Inc. | Regenerative recovery of contaminants from effluent gases |
-
1931
- 1931-01-29 GB GB290731A patent/GB371888A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8940258B2 (en) | 2012-05-02 | 2015-01-27 | Mecs, Inc. | Regenerative recovery of contaminants from effluent gases |
| US9266059B2 (en) | 2013-03-15 | 2016-02-23 | Mecs, Inc. | Regenerative recovery of contaminants from effluent gases |
| US9884289B2 (en) | 2013-03-15 | 2018-02-06 | Mecs Inc | Regenerative recovery of contaminants from effluent gases |
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