Vapor phase adsorption using nonstoichiometric carbon-sulfur compounds
AssigneeExxon Research & Engineering Co.
InventorsDavid W. Savage, Chin H. Chang, John M. Longo
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Abstract
Nonstoichiometric carbon-sulfur compounds have been found to be effective adsorbents for separating organic vapors from a gaseous mixture. Separation of aromatic compounds from gaseous mixtures is particularly effective using such compounds. The spent adsorbent may then be regenerated.
Claims21
A process for regenerating a nonstoichiometric carbon-sulfur compound of the formula C.sub.x S, where x ranges from about 4 to about 15, the adsorptive capacity of said compound having become reduced due to the adsorption of organic vapors thereon, which comprises removing at least a portion of said adsorbed vapors from said nonstoichiometric carbon-sulfur compound.
A process for removing organic vapors from a gaseous mixture which comprises
- (a) contacting said mixture with a nonstoichiometric carbon-sulfur compound of the formula C.sub.x S, where x ranges from 4 to about 15, said compound having a surface area of at least 300 square meters per gram, for a period of time sufficient to adsorb at least a portion of said organic vapors from said mixture onto said compound, thereby reducing the adsorptive capacity of said compound,
- (b) regenerating said nonstoichiometric carbon-sulfur compound by removing at least a portion of said organic vapors from said compound.
Dependencies are inferred from the claim text.