Process to prepare low carbon disulfide containing dimethyl sulfide
AssigneeChevron Phillips Chemical Company LP
InventorsDan M. Hasenberg, Stan A. Zisman, Mitchell D. Refvik
Life of this patent
Estimating the term…
Abstract
An adsorption method is disclosed for removal of acid gas from a sulfur compound stream. The method relates to a novel process to remove acid gas from a sulfur compound stream by adsorption on an adsorption media adsorbent followed by regeneration of the adsorption media after the adsorption capacity has been reached. The adsorption media comprises an activated alumina, which has been previously treated with one or more alkali metal compounds, one or more alkaline earth metal compounds, or a mixture thereof; and then regenerating the adsorbent after the adsorption capacity has been reached.
Claims36
A process to remove acid gas from a sulfur compound stream, said process comprises adsorbing said acid gas in an adsorption zone to remove a portion of said acid gas from said sulfur compound stream to produce a low acid gas sulfur product.
A process to remove CS2 from a sulfur compound stream, said process comprising adsorbing said CS2 in an adsorption zone to remove a portion of CS2 from said sulfur compound stream to produce a low CS2 sulfur product.
24 A process according to claim 23 wherein said natural gas has an acid gas content of up to 0.5 wt %.
A process to remove CS2 from a dimethylsulfide stream, said process comprising adsorbing said CS2 in an adsorption zone to remove a portion of said CS2 from said dimethylsulfide to produce a low CS2 dimethylsulfide product wherein said adsorption zone comprises an adsorber containing activated alumina adsorbent;
- wherein said activated alumina has been previously treated with one or more alkali metal compounds, one or more alkaline earth metal compounds, or a mixture thereof.
A process to remove CS2 from a dimethylsulfide stream, said process comprising adsorbing said CS2 in an adsorption zone to remove a portion of said CS2 from said dimethylsulfide stream to produce a low CS2 dimethylsulfide product wherein said adsorption zone comprises an adsorber containing activated alumina adsorbent;
- wherein said activated alumina has been previously treated with one or more alkali metal compounds, one or more alkaline earth metal compounds, or a mixture thereof;
- wherein said adsorber is operated at a temperature in a range of −25° C. and 100° C.;
- wherein said adsorber is operated to its adsorption capacity and regenerated with nitrogen or natural gas at a temperature in a range of 235° C. to 300° C.
Dependencies are inferred from the claim text.