Exxon Research and Engineering Company

Patrick C Madden, Ii

Z Andrew Foroulis

Disclosed is a method for inhibiting corrosion of metal surfaces in contact with H.sub.2 S-containing acid gases streams and aqueous amine scrubbing solutions, which method comprises: contacting the H.sub.2 S-containing stream with amine scrubbing solution in the presence of an effective amount of an ammonium or alkali-metal thiosulfate salt and an effective amount of sulfide and/or hydrosulfide ions.

Use of thiosulfate salt for corrosion inhibition in acid gas scrubbing

Disclosed is a process for scrubbing acid gases from an H.sub.2 -containing acid gas stream by use of an aminecontaining aqueous scrubbing solution wherein the corrosion of metal surfaces in contact with such a solution is inhibited by use of an effective amount of sulfide dioxide.

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Whippany, NJ, United States of America

Patrick C Madden, Ii