Gas: heating and illuminating – Processes – Fuel mixtures
Patent
1979-12-28
1983-05-17
Mars, Howard T.
Gas: heating and illuminating
Processes
Fuel mixtures
423248, 423644, 423645, 423648R, 518704, 518705, 518706, C07C 104, C10L 300
Patent
active
043838375
ABSTRACT:
This invention concerns an efficient, high recovery, single product, multiple-stage process for producing high BTU methane from a low BTU feed gas containing carbon monoxide, hydrogen, nitrogen and other materials. In the process, impurities like hydrogen sulfide and carbon dioxide are removed at the appropriate point. The carbon monoxide is removed and split into two streams. One stream is reacted with steam to provide additional hydrogen which is mixed with the other carbon monoxide stream and passed to a methanator. The hydrogen in the feed gas is recovered in an especially efficient two stage manner which is suitable for use with standard cooling water and which reduces metallurgical problems, compression requirements and heat requirements. In the first stage, metal hydrides are formed, thereby separating the hydrogen in the feed gas from nitrogen and the nitrogen exits and is removed. The hydrides are then decomposed to generate additional hydrogen which is also passed to the methanator where carbon monoxide and hydrogen are reacted to form methane and water. The process produces a pipeline quality synthetic natural gas.
REFERENCES:
patent: 3793435 (1974-02-01), Reilly et al.
patent: 3872025 (1975-03-01), Singleton
Atlantic Richfield Company
Folzenlogen M. David
Mars Howard T.
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