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U.S. Department of Energy
Office of Scientific and Technical Information

Hydrocarbon separating process

Patent ·
OSTI ID:5203682

A cyclic, vapor-phase, pressure swing process for the separation of n-paraffins from a mixture with nonstraight chain hydrocarbons comprises the steps of adsorption purge and desorption. Purge effluent is recycled through a bed of a 5 A molecular sieve in an adsorption stage and an effluent of reduced n-paraffin content is recovered. The bed is purged to remove surface adsorbed and interstitial matter by reducing the pressure in the bed by direct contact condensation with fresh feed introduced at or near ambient temperature. A purge effluent is recovered for recycle to stage (1). The bed is then desorbed to recover n-paraffins by further reducing the pressure in the bed.

Assignee:
British Petroleum Co., Ltd.
Patent Number(s):
US 4069142
OSTI ID:
5203682
Country of Publication:
United States
Language:
English