Method of removing organic sulfur compounds from alkylate
AssigneeCatalytic Distillation Technologies
InventorLawrence A. Smith, Jr.
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Abstract
A process for the removal of organic sulfur compounds, primarily oxygenated organic compounds, such as sulfates and sulfonic esters from a hydrocarbon liquid is disclosed which comprises contacting the hydrocarbon liquid with a coalescer comprising a mesh material which has been wetted by sulfuric acid. The hydrocarbon liquid may be the product from a sulfuric acid catalyzed alkylation process and contain sufficient sulfuric acid to remove the sulfates and sulfonic esters. Sulfuric acid may be added to the coalescer vessel counter current to the hydrocarbon liquid to improve the efficiency of the contacting and removal.
Claims10
A process for the removal of organic sulfur compounds from a hydrocarbon stream comprising contacting said hydrocarbon stream with a coalescer which has been wetted with sulfuric acid, said sulfuric acid being added to said coalescer countercurrent to said hydrocarbon stream.
A process for the treatment of the effluent from an alkylation reactor wherein a stream containing normal butene is contacted with a stream containing normal butane and isobutane in the presence of liquid sulfuric acid under conditions of temperature and pressure to produce isooctane along with sulfonates and sulfonic esters, comprising the steps of:
- (a) passing said effluent through a coalescer, said sulfuric acid being added to said coalescer countercurrent to said effluent;
- (b) concurrently in said coalescer;
- (i) removing entrained sulfuric acid from said effluent by impingement upon said coalescer;
- (ii) extracting said sulfonates and sulfonic esters in said sulfuric acid;
- and
- (iii) separating the effluent into a hydrocarbon effluent and a sulfuric acid effluent;
- and
- (c) passing the hydrocarbon effluent from said coalescer to a deisobutanizer (DIB) column where isobutane is removed as overheads and normal butane along with alkylate product is removed as bottoms.
A process for the treatment of the effluent from an alkylation reactor wherein a stream containing normal butene is contacted with a stream containing normal butane and isobutane in the presence of liquid sulfuric acid under conditions of temperature and pressure to produce isooctane along with sulfonates and sulfonic esters, comprising the steps of:
- (a) passing said effluent through a coalescer;
- (b) feeding sulfuric acid to said coalescer countercurrent to said effluent;
- and
- (c) concurrently in said coalescer;
- (i) removing entrained sulfuric acid from said effluent by impingement upon said coalescer;
- and
- (ii) extracting said sulfonates and sulfonic esters in said sulfuric acid.
Dependencies are inferred from the claim text.