Recovery of co-adsorbed hydrocarbons from molecular sieve adsorp

Details Recovery of co-adsorbed hydrocarbons from molecular sieve adsorp Recovery of co-adsorbed hydrocarbons from molecular sieve adsorp

1989-06-27

1990-11-20

Myers, Helane

Mineral oils: processes and products

Refining

With solid catalyst or absorbent

208150, 208245, 208248, 208307, 585826, 502515, 502517, C10G 2512

Patent

active

049716824

ABSTRACT:
In the purification of light hydrocarbons to remove carbonyl sulfide impurity by selective adsorption thereof on molecular sieve adsorbents, significant losses of the hydrocarbon are incurred by its coadsorption on the adsorbent with the COS impurity. Conventional desorption procedures produce a desorbate which is a non-commercial mixture of COS and hydrocarbon. The purge desorption method of the present invention utilizing a mixture of CO.sub.2 and a non-sorbable purge gas permits recovery of the coadsorbed hydrocarbon in a pure and commercially useful form.

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patent: 4464250 (1984-08-01), Myers et al.
patent: 4795545 (1989-01-01), Schmidt

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