Hydrogen and carbon monoxide production by hydrocarbon steam ref

Details Hydrogen and carbon monoxide production by hydrocarbon steam ref Hydrogen and carbon monoxide production by hydrocarbon steam ref

1990-12-05

1992-03-17

Spitzer, Robert

Gas separation

Means within gas stream for conducting concentrate to collector

55 31, 55 58, 55 62, 55 68, 55 74, 55 75, B01D 5304

Patent

active

050964704

ABSTRACT:
The present invention is directed to a method for producing hydrogen and carbon monoxide from a feed mixture comprising hydrogen, carbon monoxide, carbon dioxide, and methane by (a) passing the feed mixture through a first pressure swing adsorption system comprising an adsorbent having a greater affinity for carbon dioxide, methane, and carbon-monoxide than for hydrogen, to separate hydrogen from the carbon dioxide, methane, and carbon monoxide, (b) desorbing carbon monoxide, (c) desorbing carbon dioxide and methane, (d) passing the carbon monoxide to a second pressure swing adsorption system comprising an adsorbent having a greater affinity for carbon monoxide than for hydrogen, carbon dioxide, and methane to separate the carbon monoxide from hydrogen, carbon dioxide, and methane, and (e) desorbing carbon monoxide from the adsorbent. In a second embodiment, the invention is directed to a method which comprises (a) pressure swing adsorption in a first stage comprising an adsorbent having a greater affinity for carbon monoxide than for hydrogen, carbon dioxide, and methane, and pressure swing adsorption in a second stage comprising an adsorbent having a greater affinity for carbon dioxide, methane, and carbon monoxide than for hydrogen.

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