초록 ▼

Processes are disclosed for the separation of hydrogen sulfide from feedstreams containing hydrogen sulfide and hydrocarbons by adsorption using a clinoptilolite adsorbent containing cations having ionic radii of from about 1.10 to 1.40 Angstroms. The processes can provide substantially enhanced ads

Processes are disclosed for the separation of hydrogen sulfide from feedstreams containing hydrogen sulfide and hydrocarbons by adsorption using a clinoptilolite adsorbent containing cations having ionic radii of from about 1.10 to 1.40 Angstroms. The processes can provide substantially enhanced adsorption capacities as compared with other adsorbents such as Zeolite 4A. As a result, a throughput of existing sulfur adsorption plants can be increased, e.g., by about 100%. The processes can be operated at elevated adsorption temperatures, e.g., greater than about 200°F., and thus are particularly suitable when integrated with other processing steps such as hydrocarbon conversion reactions that utilize catalysts which are sulfur-sensitive. In addition, the clinoptilolite adsorbents of the present invention have a high tolerance to environments that comprise halides, e.g., HCl.

대표청구항 ▼

A process for separating hydrogen sulfide from a feedstream containing hydrogen sulfide and hydrocarbons, which comprises contacting the feedstream in an adsorber bed with a clinoptilolite molecular sieve ion-exchanged with a barium cation in a concentration effective to cause hydrogen sulfide to be

A process for separating hydrogen sulfide from a feedstream containing hydrogen sulfide and hydrocarbons, which comprises contacting the feedstream in an adsorber bed with a clinoptilolite molecular sieve ion-exchanged with a barium cation in a concentration effective to cause hydrogen sulfide to be selectively adsorbed on the clinoptilolite molecular sieve, wherein said concentration of the barium cation in said clinoptilolite molecular sieve is from about 20 to about 95 equivalent percent of the ion-exchangeable cations in said clinoptilolite molecular sieve, and withdrawing an effluent stream having a reduced amount of hydrogen sulfide relative to the feedstream.