Archon Technologies Ltd.

Alan Ayasse

Conrad Ayasse

Ahmed M Shahin

A method and apparatus for eliminating COS and/or CSfrom a hydrocarbon-containing feed stream, and further eliminating HS from such feed stream or converting all sulfur species in such feed stream to HS and SOto allow for easy subsequent conversion of such HS and SOto elemental sulfur in a Claus reaction. The method comprises: (i) injecting water so that the feed stream contains greater than 10 vol % (water equivalent); (ii) passing the feed stream through catalyst means which hydrogenates COS and/or CSto HS; (iii) injecting Oso that the stoichiometric ratio of Oto HS is at least 0.5:1.0; (iv) passing the stream though a reaction zone having oxidation catalyst means which oxidizes HS to elemental sulfur or SO(depending on the amount of oxygen and water added); where the temperature of the reaction zone is above the elemental sulfur dew point.

Removal of sulfur compounds from a gas stream

A method of reducing sulfur compounds from an incoming gas stream, comprising flowing the gas stream over a hydrolysis catalyst to convert COS and CSto HS and reduce SOto elemental sulfur to form an effluent stream; providing an acidic gas removal unit comprising an absorbent; flowing said effluent stream over said absorbent to produce a stream free of acidic gases; applying an acidic-gas desorption mode to said acidic-gas rich absorbent to produce an acidic gas stream; introducing oxygen to said acidic gas-rich stream; providing a direct oxidation vessel containing catalyst suitable for catalyzing the oxidation of the HS to sulfur wherein the temperature of the vessel is at or above the sulfur dew point at the reaction pressure; and flowing said acidic gas-rich stream over said catalyst to produce a processed stream having a reduced level of sulfur compounds.

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Calgary, Canada

Alan Ayasse