Chelate catalyst system for H.sub.2 S removal from a gas stream

Details Chelate catalyst system for H.sub.2 S removal from a gas stream Chelate catalyst system for H.sub.2 S removal from a gas stream

1988-11-23

1989-11-14

Heller, Gregory A.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Carbon dioxide or hydrogen sulfide component

423567R, 4235762, 4235766, C01B 1716, C01B 320

Patent

active

048806099

ABSTRACT:
The present disclosure is directed to a process in solution for removing H.sub.2 S from a stream of natural gas. Sodium nitrite in the solution serves as an oxidizing agent for the H.sub.2 S. Buffering and defoaming agents are added. Absent a catalyst, the process suffers from conversion of the nitrite ion into NH.sub.3 which conversion is suppressed by the incorporation of a transition metal chelate complex. The metal is preferably chromium, copper or iron and the chelate complex is preferably EDTA or TEA, with acceptable performance obtained from HEEDTA or NTA. The metal chelate complex catalyzes the sodium nitrite oxidation of H.sub.2 S, markedly enhancing sulfur recovery as a precipitate in solution.

REFERENCES:
patent: 4009251 (1977-02-01), Meuly
patent: 4414817 (1983-11-01), Jernigan
patent: 4515759 (1985-05-01), Burnes et al.
patent: 4758416 (1988-07-01), Fong et al.

Affiliated with

Also associated with

Rating

Chelate catalyst system for H.sub.2 S removal from a gas stream does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Chelate catalyst system for H.sub.2 S removal from a gas stream, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chelate catalyst system for H.sub.2 S removal from a gas stream will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1851891