Sulfur removal system for protection of reforming catalyst
AssigneeChevron Research Company
InventorsRichard C. Robinson, Robert L. Jacobson, Leslie A. Field
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Abstract
A process for removing residual sulfur from a hydrotreated naphtha feedstock is disclosed. The feedstock is contacted with molecular hydrogen under reforming conditions in the presence of a less sulfur sensitive reforming catalyst, thereby converting trace sulfur compounds to H.sub.2 S, and forming a first effluent. The first effluent is contacted with a solid sulfur sorbent, removing the H.sub.2 S and forming a second effluent. The second effluent is contacted with a highly selective reforming catalyst under severe reforming conditions.
Claims17
A method for removing residual sulfur from a hydrotreated naphtha feedstock comprising:
- (a) contacting said feedstock with hydrogen under mild reforming conditions in the presence of a less sulfur sensitive reforming catalyst that requires sulfiding, thereby carrying out some reforming reactions and also converting trace sulfur compounds to H.sub.2 S and forming a first effluent;
- (b) contacting said first effluent with a solid sulfur sorbent to remove the H.sub.2 S, thereby forming a second effluent which contains less than 0.1 ppm sulfur;
- (c) contacting said second effluent with a highly selective reforming catalyst, which is more sulfur sensitive, in subsequent reactors.
Dependencies are inferred from the claim text.