GB1044518A - Improvements in and relating to the regeneration of gas scrubbing solutions - Google Patents
Improvements in and relating to the regeneration of gas scrubbing solutionsInfo
- Publication number
- GB1044518A GB1044518A GB3216262A GB3216262A GB1044518A GB 1044518 A GB1044518 A GB 1044518A GB 3216262 A GB3216262 A GB 3216262A GB 3216262 A GB3216262 A GB 3216262A GB 1044518 A GB1044518 A GB 1044518A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cell
- stream
- sulphate
- membrane
- dialysis
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/42—Electrodialysis; Electro-osmosis ; Electro-ultrafiltration; Membrane capacitive deionization
- B01D61/44—Ion-selective electrodialysis
- B01D61/445—Ion-selective electrodialysis with bipolar membranes; Water splitting
Abstract
An electrodialysis cell comprises a plurality of cells each having two compartments containing a preselective single membrane, preferably anionic, the walls of each cell being a double membrane, anionic and cationic bonded together, the whole assembly having an anode at one end and a cathode at the other. It is stated that the function of the double membrane, is to ionize water passing through with generation of OH and H ions. The dialysis cell is used to regenerate foul alkaline liquors formed in an industrial gas scrubbing plant e.g. washing out Co2, from which the liquor passes through alternate compartments where sodium ions are removed through the single membrane into a second stream of purified liquor. The dialysed first stream is fed to a de-gasifier where Co2 is removed and forms the second stream which after passing through the dialysis cell becomes re-causticised and is again used for scrubbing foul gas. In other applications (1) washing liquor containing sodium sulphite, bi-sulphite, and thio-sulphate is oxidized in an aertor to sulphate and sulphur; the latter is filtered off and the sulphate solution dialysed to generate alkali and dilute sulphuric acid, (2) flue gas containing H2S is washed with alkali carbonate solution containing a little anthraquinone and sodium vanadate. After removal of sulphur compounds by dialysis mainly as complexed vanodate, these are acidified in a second stream and the regenerated vanadate regenerates alkali carbonate. A number of multi-stack cells are described, each cell having the central single diaphragm with cell walls of double diaphragms of opposite ionic charge. In one multi-stack the end cells contain two single diaphragms Fig. 4 (not shown). There is also illustrated frame and spacer members (Figs. 5, 6 not shown) of normal construction but the communicating channels are either inclined slots in the edge of the frame, or a short straight slot provided with a pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3216262A GB1044518A (en) | 1962-08-22 | 1962-08-22 | Improvements in and relating to the regeneration of gas scrubbing solutions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3216262A GB1044518A (en) | 1962-08-22 | 1962-08-22 | Improvements in and relating to the regeneration of gas scrubbing solutions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1044518A true GB1044518A (en) | 1966-10-05 |
Family
ID=10334265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3216262A Expired GB1044518A (en) | 1962-08-22 | 1962-08-22 | Improvements in and relating to the regeneration of gas scrubbing solutions |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1044518A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0013050A2 (en) * | 1978-12-28 | 1980-07-09 | Shell Internationale Researchmaatschappij B.V. | Process for the removal of volatile ionisable components from aqueous streams |
| EP0124007A2 (en) * | 1983-05-02 | 1984-11-07 | Allied Corporation | Multichamber two-compartment electrodialytic water splitter and method of using same for acidification of aqueous soluble salts |
-
1962
- 1962-08-22 GB GB3216262A patent/GB1044518A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0013050A2 (en) * | 1978-12-28 | 1980-07-09 | Shell Internationale Researchmaatschappij B.V. | Process for the removal of volatile ionisable components from aqueous streams |
| EP0013050A3 (en) * | 1978-12-28 | 1981-01-28 | Shell Internationale Research Maatschappij B.V. | Process for the removal of volatile ionisable components from aqueous streams |
| EP0124007A2 (en) * | 1983-05-02 | 1984-11-07 | Allied Corporation | Multichamber two-compartment electrodialytic water splitter and method of using same for acidification of aqueous soluble salts |
| EP0124007A3 (en) * | 1983-05-02 | 1985-10-30 | Allied Corporation | Multichamber two-compartment electrodialytic water splitter and method of using same for acidification of aqueous soluble salts |
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