Process for the selective removal of hydrogen sulfide from...

Details Process for the selective removal of hydrogen sulfide from... Process for the selective removal of hydrogen sulfide from...

B - Operations, Transporting

01

D

23/344

B01D 53/14 (2006.01) B01D 53/52 (2006.01) C01B 17/05 (2006.01)

Patent

CA 1191333

PROCESS FOR THE SELECTIVE REMOVAL OF HYDROGEN SULFIDE FROM GASEOUS STREAM Abstract: In a process for the selective removal of hydrogen sulfide from a gaseous stream additionally containing carbon dioxide, the gaseous stream is contacted with a polyvalent metal chelate solution for a time sufficient to allow the polyvalent metal chelate to oxidize the hydrogen sulfide to elemental sulfur without allowing the polyvalent metal chelate solution to absorb appreciable amounts of carbon dioxide. The pH of the metal chelate solution should be greater than 7 and the contact time between the polyvalent metal chelate and the gaseous stream is between 0.006 and 0.08 second.

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