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

Isobaric process for separating normal paraffins from hydrocarbon mixtures

Patent ·
OSTI ID:5765719

An isobaric process for separating normal paraffins from hydrocarbon mixtures is described. These normal paraffins are separated from a gas oil-containing hydrocarbon vapor feed stream having 16 to 25 carbon atoms per molecule in a constant pressure process employing a molecular sieve adsorbent and n-hexane for purging and for dilution of gas oil-containing feedstocks. Countercurrent purge effluent is used to provide a source of such n-hexane diluent, thereby effecting a savings in the amount of energy necessary to process the purge recycle stream and the size of the equipment used therefor. 7 claims.

Assignee:
Union Carbide Corp.
Patent Number(s):
US 4350583
OSTI ID:
5765719
Country of Publication:
United States
Language:
English