Method for manufacture of ammonium thiosulfate from ammonia and

Details Method for manufacture of ammonium thiosulfate from ammonia and Method for manufacture of ammonium thiosulfate from ammonia and

1982-09-30

1984-10-23

Straub, Gary P.

Chemistry of inorganic compounds

Sulfur or compound thereof

Oxygen containing

C01B 1764

Patent

active

044788070

ABSTRACT:
A process for the manufacture of aqueous ammonium thiosulfate from sulfur dioxide wherein ammonium sulfite is formed as an intermediate product by the scrubbing reaction of ammonia with sulfur dioxide in the presence of water. Preferably, the ammonia is added to the sulfur dioxide in the bottom of the second scrubbing reaction vessel so as to maintain the sulfur dioxide and ammonia in liquid phase.

REFERENCES:
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patent: 2315534 (1941-04-01), Marasco
patent: 2586459 (1952-02-01), Farr et al.
patent: 3431070 (1969-03-01), Keller
patent: 3473891 (1969-10-01), Mack
patent: 3493337 (1970-03-01), Every et al.
patent: 3524724 (1970-08-01), Every et al.
patent: 3591335 (1971-07-01), Grimsley et al.
patent: 3937793 (1976-02-01), Metzgen et al.

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