Normal butane/iso-butane separation

Details Normal butane/iso-butane separation Normal butane/iso-butane separation

1985-06-28

1986-08-26

Spitzer, Robert

Gas separation

Means within gas stream for conducting concentrate to collector

55 62, 55 68, 208310Z, 585820, B01D 5304

Patent

active

046080619

ABSTRACT:
Iso-butane is separated from normal butane in a pressure swing adsorption system of at least three adsorbent beds, each adapted to selectively adsorb normal butane from a mixture thereof with iso-butane. The adsorption front of normal butane formed in each adsorbent bed upon the passage of the feed gas mixture thereto is moved through the bed to an extent enhancing the utilization of the adsorptive capacity thereof. By combinations of depressurization and repressurization together with purge, desirable product purity levels are obtained, while the cost of adsorbent equipment and of operation are reduced to the extent possible consistent with the purity requirements of a given application.

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