Process for decreasing the corrosiveness of a sour water

Details Process for decreasing the corrosiveness of a sour water Process for decreasing the corrosiveness of a sour water

1994-03-02

1995-07-11

Warden, Robert J.

Chemical apparatus and process disinfecting, deodorizing, preser

Process disinfecting, preserving, deodorizing, or sterilizing

Maintaining environment nondestructive to metal

204 92, 204149, 204151, 210758, 210765, 210904, 422 12, C23F 1100

Patent

active

054318777

ABSTRACT:
An aqueous solution which contains ammonium polysulfide is proportionally added to the sour water, which contains cyanide ions, ammonium ions, and sulfide ions. At least part of the cyanide ions contained in the sour water is converted to thiocyanate ions by the ammonium polysulfide. The solution which contains ammonium polysulfide is prepared from an aqueous solution by oxidation in an electrochemical cell. That aqueous solution may consist entirely or in part of sour water.

REFERENCES:
patent: 3249522 (1966-05-01), Bolmer
patent: 3409520 (1968-11-01), Bolmer
patent: 4508683 (1985-04-01), Doll et al.
patent: 4765873 (1988-08-01), Chang et al.

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