Isobaric process for separating normal paraffins from hydrocarbo

Mineral oils: processes and products – Fractionation – Adsorption

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585821, 585826, C10G 2503

Patent

active

043505830

ABSTRACT:
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.

REFERENCES:
patent: 3282346 (1966-11-01), Anstey et al.
patent: 3291725 (1966-12-01), Brodbeck
patent: 3342726 (1967-09-01), Mowll et al.
patent: 3422005 (1969-01-01), Avery
patent: 4176053 (1979-11-01), Holcombe

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