Chemistry of hydrocarbon compounds – Purification – separation – or recovery
Patent
1999-03-18
2000-05-30
Griffin, Walter D.
Chemistry of hydrocarbon compounds
Purification, separation, or recovery
585802, 585809, 423247, 423248, 423655, 423656, C07C 700, B01J 800, C01B 300, C01B 312, C01B 316
Patent
active
06069288&
ABSTRACT:
A process for the separation and removal, of hydrogen, alone or together with carbon monoxide, if present, from a mixture of these gases with reactive unsaturated hydrocarbons, by contacting the mixture with oxygen over a catalyst at conditions sufficient to oxidize the hydrogen to form water while suppressing reaction of the reactive, unsaturated hydrocarbons. The catalyst contains at least one metal or metal oxide from Groups IB, IIB, IIIB, IVB, VB, VIB, VIIB, and VIII of the Periodic Table, and the temperature of the reaction may range from about 40.degree. C. to about 300.degree. C., the pressure of the reaction ranges from about 14.7 psig to 1,000 psig, and the flow rate of the entering feed ranges from about 1 GHSV to about 50,000 GHSV. Oxygen amounts less than the stoichiometric amount required to react with the hydrogen, and optionally any carbon monoxide, are used. In a second stage, any remaining carbon monoxide is reacted with water in a water gas-shift reaction to give carbon dioxide and hydrogen, and any small remaining hydrogen is reacted with a small portion of reactive unsaturated hydrocarbon present.
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Daniel Lawrence G.
Ou John D. Y.
Vaughn Stephen N.
Exxon Chemical Patents Inc.
Griffin Walter D.
Keller Bradley A.
Nguyen Tam M.
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