Process for preparing methane rich gases

Details Process for preparing methane rich gases Process for preparing methane rich gases

1975-10-22

1978-12-19

Mars, Howard T.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2604496M, 48187R, C07C 104

Patent

active

041305752

ABSTRACT:
Hydrogen and carbon oxides are reacted to form methane by passing an inlet stream of preheated methanation synthesis gas together with a recycle stream of product gas through a catalyst bed in an adiabatic methanation reactor. The inlet temperature is between 250.degree. and 350.degree. C, the outlet temperature between 500.degree. and 700.degree. C. The recycle stream is withdrawn from the outlet stream after the latter has been cooled to a temperature between 250.degree. and 350.degree. C and being, however, at least 50.degree. C above the dew point. A preferred means for withdrawing the recycle stream is an ejector driven by the inlet stream or by added steam.

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Bienstock et al., Bureau of Mines, Report of Investigations 5841 (1961), p. 1-27.
Field et al., I & EC Product Research & Development vol. 3, No. 2 (1964) p. 150-153.

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