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U.S. Department of Energy
Office of Scientific and Technical Information

Production of gases rich in hydrogen

Patent ·
OSTI ID:6747148
This paper discusses a process of increasing the value of synthesis tail gas obtained by reacting CO with H/sub 2/ in a synthesis zone in the presence of a synthesis catalyst. The process involves removing normally liquid constituents from the total synthesis product by dividing the total amount of said tail gas into a minor stream and a major stream. Then contacting said minor stream in a first contacting zone with a liquid absorbent for hydrocarbons and carbon oxides in an amount at least sufficient to absorb a major proportion of hydrocarbons and carbon oxides present in said total tail gas. The process continues by providing conditions conducive to the absorption of a major proportion of hydrocarbons and carbon oxides contained in said minor stream, withdrawing a minor tail-gas stream of increased value from the first contacting zone, withdrawing an enriched liquid absorbent from the first contacting zone, and contacting the major stream with withdrawn absorbent in a second contacting zone. This occurs at conditions conducive to the absorption of at least a major proportion of hydrocarbons contained in said major stream, withdrawing a major tail-gas stream from said second zone and withdrawing rich liquid absorbent from said second zone.
Assignee:
Standard Oil Development Co., DE
Patent Number(s):
US 2514340
OSTI ID:
6747148
Country of Publication:
United States
Language:
English