Adsorption processes with intermediate product recovery using tw

Details Adsorption processes with intermediate product recovery using tw Adsorption processes with intermediate product recovery using tw

1990-12-03

1992-04-21

Spitzer, Robert

Gas separation

Means within gas stream for conducting concentrate to collector

55 28, 55 33, 55 62, 55 68, 55 74, 55 75, B01D 5304

Patent

active

051063964

ABSTRACT:
Adsorption processes are provided for the separation of a feedstream containing less readily, intermediately, and more readily adsorbable components using first and second adsorption zones. The second adsorption zone utilizes a cycle that includes a cocurrent displacement step and the intermediately adsorbable components are recovered therefrom by countercurrent depressurization. The first adsorption zone is purged with a stream from the second adsorption zone to recover the more readily adsorbable components. The processes are particularly suitable for recovering carbon monoxide from feedstreams containing hydrogen, carbon monoxide and other compounds such as methanol and higher alcohols, methane, dimethyl ether, dimethyl ketone, water, carbon dioxide, oxygen and mixtures thereof. The processes are particularly applicable to methanol reforming processes wherein hydrogen and carbon monoxide product streams are recovered from a methanol reactor effluent stream also containing components selected from methanol, methane, dimethyl ether, carbon dioxide, oxygen and water.

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