Method of adsorbing hydrocarbons

Details Method of adsorbing hydrocarbons Method of adsorbing hydrocarbons

1997-12-19

1999-12-14

Dunn, Thomas

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

423212, 4232132, 95143, 95902, B01J 800

Patent

active

060013206

ABSTRACT:
A method for improving the adsorption properties of a hydrocarbon adsorber which involves contacting a molecular sieve hydrocarbon adsorber with an agent for modifying the acid sites of the molecular sieve to impregnate the molecular sieve with the agent. The resulting acid-modified molecular sieve has the ability to retain adsorbed hydrocarbons at higher temperatures than the molecular sieve in the un-modified state. The acid-modified molecular sieve can be used to remove hydrocarbons from a workstream. The workstream is passed through the modified adsorber at atmospheric pressure at a temperature ranging from room temperature to about 150.degree. C. to cause adsorption and retention of the hydrocarbons. The adsorbed hydrocarbons can then be desorbed at a higher temperature than would otherwise occur with an unmodified adsorber.

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