GB434622A - A process for the manufacture of ammonium sulphate - Google Patents
A process for the manufacture of ammonium sulphateInfo
- Publication number
- GB434622A GB434622A GB17279/34A GB1727934A GB434622A GB 434622 A GB434622 A GB 434622A GB 17279/34 A GB17279/34 A GB 17279/34A GB 1727934 A GB1727934 A GB 1727934A GB 434622 A GB434622 A GB 434622A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sludge
- sulphur dioxide
- ammonium sulphate
- vacuum
- ammonia
- 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
- C01C1/242—Preparation from ammonia and sulfuric acid or sulfur trioxide
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
<PICT:0434622/III/1> <PICT:0434622/III/2> Ammonium sulphate is obtained from a sulphur dioxide-containing sulphuric acid sludge by reducing the sulphur dioxide content of the sludge to 2 per cent by weight or less of its sulphuric acid content and thereafter reacting the resulting acid sludge with ammonia to produce ammonium sulphate in which step the remaining sulphur dioxide is substantially expelled. The sulphur dioxide content of the sludge may be reduced by aeration or by maintaining a vacuum thereon. Treatment by aeration may be effected in a degasefier 6, Fig. 1, provided with downwardly sloping annular baffles 7 and a series of rotating plates 4, the sludge being supplied by a pipe 1 and preheated air by means of a conduit 10. Treatment by means of a vacuum may be effected in a degasefier 17, Fig. 2, provided with plates 19 and annular trays 20, the sludge being supplied from a preheater 15 and the vacuum being maintained by a pump 18. Other degasefiers may be used, such as a tank or group of tanks connected in series, each being provided with an agitator and suitable nozzles for admitting the sludge and pipes for removing the gases and treated sludges. Preferably, the sludge should not be heated to a temperature exceeding 70 DEG C. Temperature of 30 DEG C. or 52 DEG C. are given as examples. The said sludge containing a reduced amount of SO2 may be reacted with ammonia in the presence of a large excess of approximately saturated ammonium sulphate solution, the solution preferably being maintained slightly acid. A high reaction temperature will expel most of the remaining sulphur dioxide. According to an example the treated sludge is reacted with aqueous ammonia, some sulphur dioxide and water vapour being removed in the reaction. The ammonium sulphate solution is separated from accompanying oily material, say by mechanical separation or extraction, and is then fed to evaporating apparatus. The remaining sulphur dioxide is removed from the solution during evaporation.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US434622XA | 1933-06-24 | 1933-06-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB434622A true GB434622A (en) | 1935-09-05 |
Family
ID=21927290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB17279/34A Expired GB434622A (en) | 1933-06-24 | 1934-06-11 | A process for the manufacture of ammonium sulphate |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB434622A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2653077A (en) * | 1949-05-09 | 1953-09-22 | Phillips Petroleum Co | Production and recovery of ammonium sulfate |
-
1934
- 1934-06-11 GB GB17279/34A patent/GB434622A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2653077A (en) * | 1949-05-09 | 1953-09-22 | Phillips Petroleum Co | Production and recovery of ammonium sulfate |
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