Gas separation process

Patent · Tue Mar 22 04:00:00 EST 1988

OSTI ID:5082346

Nicholas, D M; Hopkins, J A; Roden, T M; Bushinsky, J P

The method for production of high purity hydrogen and high purity carbon monoxide from a mixed gas stream comprising these components together with carbon dioxide and a zero to a minor amount of one or more other gaseous contaminants is described comprising the steps of: (a) passing the mixed gas stream into and through a first bed of solid adsorbent capable of selectively adsorbing carbon dioxide and water while discharging from the bed a dry CO/sub 2/-freed effluent; (b) introducing the dry CO/sub 2/-freed effluent into a cryogenic environment for cooling the same therein under conditions effective for condensation of at least the major part of the carbon monoxide present in the dry CO/sub 2/-freed effluent; (c) withdrawing from the cryogenic environment carbon monoxide of high purity; (d) separately withdrawing from the cryogenic environment an uncondensed first gas stream product comprised of crude hydrogen and subjecting the first gas stream product to selective adsorption of non-hydrogen components therefrom in a second bed of solid absorbent, while recovering from the second bed the non-sorbed fraction as a product stream of essentially pure hydrogen; (e) purging the second solid adsorbent bed to desorb non-hydrogen components sorbed therein in step (d), and withdrawing from the bed a gas stream comprising the desorbed non-hydrogen components.

• Assignee: Air Products and Chemicals, Inc., Allentown, PA
• Patent Number(s): US 4732596
• OSTI ID: 5082346
• Country of Publication: United States
• Language: English

Related Subjects

08 HYDROGEN
080102* -- Hydrogen-- Production-- Thermochemical Processes
ABSORPTION
ADSORBENTS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CRYOGENICS
HYDROGEN COMPOUNDS
HYDROGEN PRODUCTION
OXIDES
OXYGEN COMPOUNDS
PURIFICATION
THERMOCHEMICAL PROCESSES
WATER