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US 2010/0059413 A1Published application
Thioetherification processes for the removal of mercaptans from gas streams
AssigneeLummus Technology Inc.
InventorsThomas Skourlis, Robert J. Gartside, Robert E. Trubac
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Abstract
This invention relates to thioetherification processes for the removal of mercaptans in charge gas streams. In particular, the invention relates to thioetherification processes for the removal of mercaptans using a catalyst comprising palladium and silver.
Claims20
A process for removing mercaptans from a gas phase mixture, comprising the steps of.
- (a) feeding to a reactor a gas phase mixture comprising hydrocarbons and mercaptans, wherein the reactor comprises a catalyst which is capable of catalyzing the thioetherification of mercaptans to thioethers to produce a reactor product mixture;
- (b) feeding the reactor product mixture to a distillation unit comprising an upper section and a lower section;
- (c) separating lower boiling point hydrocarbons from the thioethers wherein the lower boiling point hydrocarbons are substantially contained in the upper section and the thioethers are substantially contained in the lower section;
- and
- (d) recovering the lower boiling point hydrocarbons from the upper section.
2 more elements
A process for removing mercaptans from a gas phase mixture, comprising the steps of:
- (a) feeding to a distillation unit a gas phase comprising hydrocarbons and mercaptans, wherein the distillation unit comprises (i) a first catalyst which is capable of catalyzing the thioetherification of mercaptans to thioethers, (ii) an upper section;
- (iii) a lower section, and (iv) a gas phase mixture feed point, wherein the feed point is positioned between the first catalyst and the lower section,
- (b) separating lower boiling point hydrocarbons from the thioethers wherein the lower boiling point hydrocarbons are substantially contained in the upper section and the thioethers are substantially contained in the lower section;
- and
- (c) recovering the lower boiling point hydrocarbons from the upper section.
2 more elements
A process for removing mercaptans from a gas phase mixture, comprising the steps of:
- (a) feeding to a reactor hydrogen gas and a liquefied petroleum gas mixture comprising hydrocarbons and mercaptans to produce a reactor product mixture, wherein the reactor comprises a catalyst which is capable of catalyzing the thioetherification of mercaptans to thioethers;
- (b) feeding the reactor product mixture to a distillation unit, wherein the distillation unit comprises an upper section and a lower section;
- (c) separating lower boiling point hydrocarbons from the thioethers wherein the lower boiling point hydrocarbons are substantially contained in the upper section and the thioethers are substantially contained in the lower section;
- and
- (d) recovering the lower boiling point hydrocarbons from the upper section.
2 more elements
Dependencies are inferred from the claim text.