Process for preventing corrosion in alkaline systems

Details Process for preventing corrosion in alkaline systems Process for preventing corrosion in alkaline systems

B - Operations, Transporting

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252/30, 23/360,

B01D 53/14 (2006.01) C23F 11/00 (2006.01) C23F 11/06 (2006.01)

Patent

CA 1220774

ABSTRACT OF THE DISCLOSURE Corrosion of metals in contact with alkaline solutions is prevented by adding thereto an effective amount of a corrosion inhibitor which is either an ammonium or alkali metal polysulfide or a mixture of an ammonium or alkali metal sulfide and elemental sulfur. Preferably, the alkali metal polysulfide or alkali metal sulfide is a sodium polysulfide or sulfide. The corrosion inhibitor is particularly useful in acid gas scrubbing processes where either alkali metal salts and amine compound promoters are employed or amines are employed.

431503

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