Patent ID: 8808654

Claim:
A process for the removal of sulfur compounds comprising hydrogen sulfide (H 2 S) and organic sulfur compounds from a refinery off gas feed stream containing hydrogen and a low concentration of olefins, the process comprising: a) removing at least a portion of the H 2 S from the feed stream by passing the feed stream through an amine absorber to produce a H 2 S depleted stream; b) feeding a first portion of the H 2 S depleted stream into a catalytic reactor with the addition of oxygen to produce a hot effluent stream exiting the catalytic reactor at a temperature of between about 340° C. and 450° C.; c) feeding a second portion of the H 2 S depleted stream into the hot effluent stream exiting the catalytic reactor to form a preheated combined stream, wherein the first portion and second portion are mixed in quantities such that the combined stream is fed into a hydrotreater to maintain the temperature of the hydrotreater to between about 340° C. and 450° C. at the pressure employed; d) converting a majority of the organic sulfur compounds to hydrogen sulfide in the hydrotreater; e) cooling the product gas stream exiting the hydrotreater; and f) feeding the cooled product gas stream to an amine sulfur removal system to remove the H 2 S and produce a hydrocarbon product stream.