GB830419A - Process for the production of hydroxylamine sulphate solutions - Google Patents
Process for the production of hydroxylamine sulphate solutionsInfo
- Publication number
- GB830419A GB830419A GB1166456A GB1166456A GB830419A GB 830419 A GB830419 A GB 830419A GB 1166456 A GB1166456 A GB 1166456A GB 1166456 A GB1166456 A GB 1166456A GB 830419 A GB830419 A GB 830419A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- exchanger
- hydroxylamine
- hydrolysis
- solution
- 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
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/082—Compounds containing nitrogen and non-metals and optionally metals
- C01B21/14—Hydroxylamine; Salts thereof
- C01B21/1409—Preparation
- C01B21/1427—Preparation by reduction of nitrogen oxides or nitrites with bisulfite or sulfur dioxide, e.g. by the Raschig process
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
<PICT:0830419/III/1> A continuous process for the production of hydroxylamine sulphate by hydrolysis of aqueous solutions of salts of hydroxylamine disulphonic acid in which the hydrolysis reaction is maintained, without the supply of any additional energy for heating and cooling, by transferring heat liberated in the hydrolysis reaction to the aqueous solution of salts of hydroxylamine disulphonic acid to be hydrolysed, by passing the hydrolysed solution leaving the hydrolysis vessel in heat exchange in an acid-proof heat-exchanger, with the aqueous hydroxylamine disulphonate solution entering. An aqueous solution of an alkali metal or ammonium hydroxylamine disulphonate is pumped by 2 from acid-proof lined tank 1 through heat-exchanger 3 made of graphite impregnated and bonded with synthetic resin and steam heater 4 of the same material to acid-proof lined hydrolysation container 5. The hydrolysed solution flows back through exchanger 3 to acid-proof lined collecting tank 6. When the heat transfer in exchanger 3 is sufficient to maintain the hydrolysis, the heater 4 is by-passed by adjusting valve 8, 9. The container 5 should be large enough to give sufficient residence time for hydrolysis. The piping may be porcelain and polyvinyl chloride. Cooler 7 of the same material as exchanger 3 is provided to cooled solution withdrawn on shut-down.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE546365D BE546365A (en) | 1956-04-17 | ||
DEV10167A DE1041929B (en) | 1956-02-11 | 1956-02-11 | Process for the preparation of hydroxylamine sulfate solution by stepwise hydrolysis of solutions of hydroxylamine disulfo-acidic salts |
CH339913D CH339913A (en) | 1956-04-17 | 1956-02-17 | Method and device for the preparation of hydroxylamine sulfate solutions |
US575879A US2845331A (en) | 1956-04-03 | 1956-04-03 | Process for the production of hydroxyl amine sulfate solutions |
FR1145055D FR1145055A (en) | 1956-04-17 | 1956-04-05 | Process for preparing solutions of hydroxylamine sulphate and installation for its implementation |
GB1166456A GB830419A (en) | 1956-04-17 | 1956-04-17 | Process for the production of hydroxylamine sulphate solutions |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1166456A GB830419A (en) | 1956-04-17 | 1956-04-17 | Process for the production of hydroxylamine sulphate solutions |
Publications (1)
Publication Number | Publication Date |
---|---|
GB830419A true GB830419A (en) | 1960-03-16 |
Family
ID=9990409
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1166456A Expired GB830419A (en) | 1956-02-11 | 1956-04-17 | Process for the production of hydroxylamine sulphate solutions |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE546365A (en) |
CH (1) | CH339913A (en) |
FR (1) | FR1145055A (en) |
GB (1) | GB830419A (en) |
-
0
- BE BE546365D patent/BE546365A/xx unknown
-
1956
- 1956-02-17 CH CH339913D patent/CH339913A/en unknown
- 1956-04-05 FR FR1145055D patent/FR1145055A/en not_active Expired
- 1956-04-17 GB GB1166456A patent/GB830419A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR1145055A (en) | 1957-10-22 |
CH339913A (en) | 1959-07-31 |
BE546365A (en) |
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