Synthesis of acidic silica to upgrade heavy feeds
AssigneeBoard of Regents, The University of Texas System
InventorsKarina Castillo, Jason Parsons, Russell R. Chianelli
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Abstract
A method and a product made by treating a sulfur-containing hydrocarbon heavy feed, e.g., heavy crude asphaltene reduction is disposed herein. The method comprises the steps of: mixing the sulfur-containing hydrocarbon heavy feed with a hydrogen donor solvent and an addled silica to form a mixture and oxidizing the sulfur in the mixture at a temperature between 50° C. and 210° C. wherein the oxidation lowers the amount sulfur in the sulfur-containing hydrocarbon heavy feed by at least 90%.
Claims21
A method of extracting sulfur from an oxidized hydrocarbon feed, said method comprising the steps of:
- mixing a solution comprising a sulfur containing oxidized hydrocarbon feed, an acidified silica, a hydrogen donor solvent, any unreacted materials and reaction by-products with one or more polar organic solvents;
- allowing the sulfur containing oxidized hydrocarbon feed to migrate to the polar organic solvent phase;
- and
- removing the one or more polar organic solvents by evaporation to recover the sulfur.
A method for mid-distillate upgradatlon and sulfur removal in a fuel, said method comprising the steps of:
- mixing the fuel with a hydrogen donor solvent and an acidified silica to form a mixture;
- and
- oxidizing the sulfur in the mixture in air or a mixture of air and O2 at a temperature between 50° C. and 210° C.
Dependencies are inferred from the claim text.