GB708095A - An improved method of recovering sulphur values from flue gases - Google Patents
An improved method of recovering sulphur values from flue gasesInfo
- Publication number
- GB708095A GB708095A GB460652A GB460652A GB708095A GB 708095 A GB708095 A GB 708095A GB 460652 A GB460652 A GB 460652A GB 460652 A GB460652 A GB 460652A GB 708095 A GB708095 A GB 708095A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sulphate
- vessel
- flue gases
- magnesium hydroxide
- scrubber
- 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
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/24—Sulfates of ammonium
- C01C1/244—Preparation by double decomposition of ammonium salts with sulfates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Treating Waste Gases (AREA)
Abstract
<PICT:0708095/III/1> In the recovery of sulphur values from flue gases containing sulphur dioxide, the flue gases enter the base of scrubber 1 and contact a counter-current of an aqueous slurry of magnesium hydroxide forming magnesium sulphite and/or sulphate. The mixture of unconverted hydroxide and sulphite and/or sulphate is withdrawn through pipe 2 to an oxidation and settling vessel 3, where it is blown with air entering at 4 to oxidise the sulphite to sulphate. The resulting solution of magnesium sulphate is passed through 5 to second vessel 6 where it is contacted with ammonia gas, entering at 7, to form ammonium sulphate which is recovered, and precipitate magnesium hydroxide which is separated. The magnesium hydroxide may be reslurried and recycled to the scrubber, by passing the precipitate from vessel 6 through 12 to vessel 3 from which the settled magnesium hydroxide slurry is returned to scrubber 1 by pipe 13. The ammonium sulphate solution from vessel 6 may be passed through a series of evaporators 9 and thence to crystal separator 11, e.g. a centrifuge, to recover the ammonium sulphate. The liquor from ammonium sulphate crystallization may be recirculated or fresh water may be added to the slurry at 14 as desired.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB460652A GB708095A (en) | 1952-02-21 | 1952-02-21 | An improved method of recovering sulphur values from flue gases |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB460652A GB708095A (en) | 1952-02-21 | 1952-02-21 | An improved method of recovering sulphur values from flue gases |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB708095A true GB708095A (en) | 1954-04-28 |
Family
ID=9780340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB460652A Expired GB708095A (en) | 1952-02-21 | 1952-02-21 | An improved method of recovering sulphur values from flue gases |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB708095A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4193971A (en) * | 1977-03-23 | 1980-03-18 | Kawasaki Jukogyo Kabushiki Kaisha | Process for removal of sulfur oxides from waste gases |
| WO1980001377A1 (en) * | 1979-01-02 | 1980-07-10 | Bechtel Int Corp | Improved so2 removal |
| US4867961A (en) * | 1987-03-23 | 1989-09-19 | Joseph Palmer | Method of removing sulphur dioxide from a gaseous stream |
-
1952
- 1952-02-21 GB GB460652A patent/GB708095A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4193971A (en) * | 1977-03-23 | 1980-03-18 | Kawasaki Jukogyo Kabushiki Kaisha | Process for removal of sulfur oxides from waste gases |
| WO1980001377A1 (en) * | 1979-01-02 | 1980-07-10 | Bechtel Int Corp | Improved so2 removal |
| US4246245A (en) * | 1979-01-02 | 1981-01-20 | Bechtel International Corporation | SO2 Removal |
| US4867961A (en) * | 1987-03-23 | 1989-09-19 | Joseph Palmer | Method of removing sulphur dioxide from a gaseous stream |
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