Removal of organic sulfur
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In gas purification, is it possible to first catalytically convert COS into H2S, and then use the MEDA amine process to remove all of the H2S together? I’m a beginner; I hope everyone can help discuss this to see if it’s feasible and what the advantages and disadvantages are.
Look for relevant literature on COS hydrolysis; there is a lot of information available.
The use of carbonyl sulfide hydrolysis catalysts can convert some forms of carbonyl sulfur into H2S, but it is not effective for all forms of carbonyl sulfide. By using a hydrodesulfurization catalyst, more forms of carbonyl sulfide can be converted into H2S. If stringent requirements exist for the removal of carbonyl sulfide (COS), using a hydrodesulfurization catalyst is an excellent option, but it requires higher initial investment. As is well known, the H2S contained in the final gas stream can be removed through MEDA absorption.