Gas separation – Means within gas stream for conducting concentrate to collector
Patent
1987-09-16
1989-08-29
Spitzer, Robert
Gas separation
Means within gas stream for conducting concentrate to collector
55 26, 55 31, 55 58, 55 62, 55 68, 55 75, B01D 5304
Patent
active
048613517
ABSTRACT:
Substantially pure hydrogen and high purity carbon monoxide are produced and recovered from a methane-rich gas composition, such as natural gas, by subjecting such composition to steam reforming in a first stage at relatively mild conditions, followed by secondary oxidative reforming of the thus obtained primary reformate effecting conversion of residual methane therein to carbon oxides. The secondary reformate, comprised chiefly of hydrogen, CO, and CO.sub.2, is subjected to a novel sequence of operations for separation of these individual components. CO.sub.2 is first removed by solvent absorption, followed by selective adsorption for separation of CO from the CO.sub.2 -freed gas mixture with attendant recovery of hydrogen product of 98.sup.+ % purity as an unsorbed effluent. Trace to small amounts of undesired carbon monoxide in the thus recovered hydrogen product can be converted by catalytic methanation.
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Bushinsky Joseph P.
Hopkins Jeffrey A.
Nicholas David M.
Air Products and Chemicals Inc.
Chase Geoffrey L.
Marsh William F.
Simmons James C.
Spitzer Robert
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