Process for the production of substitute natural gas

Details Process for the production of substitute natural gas Process for the production of substitute natural gas

1974-09-06

1976-02-17

Serwin, R. E.

Gas: heating and illuminating

Processes

Oil and steam injected

48197R, 48202, 252459, C01B 214

Patent

active

039389685

ABSTRACT:
There is provided a process for the production of substitute natural gas (SNG) from carbonaceous materials such as hydrocarbon liquids including hydrocarbon fractions and/or solid carbonaceous fuels, by non-catalytic partial oxidation of the carbonaceous materials in the presence of process generated oxygen and high pressure steam, to form a gas stream containing principally hydrogen and oxides of carbon which are suitable for catalytic conversion to methane under conditions where sufficient waste heat is recovered in the form of high pressure steam to satisfy the steam requirements for the process and that necessary to drive compressors to produce oxygen from air as required by the partial oxidiation stage. A product gas stream containing up to 99.9% methane and less than 1 ppm sulfur compounds may be obtained.
There may be included as part of the process a carburetion stage following the partial oxidation stage where intermediate hydrocarbon fractions are converted in part to methane and in part to hydrogen and the oxides of carbon.

REFERENCES:
patent: 2830883 (1958-04-01), Eastman
patent: 3025149 (1962-03-01), Eastman
patent: 3031287 (1962-04-01), Benson et al.
patent: 3194644 (1965-07-01), Gorin et al.
patent: 3511624 (1970-05-01), Humphries et al.
patent: 3728093 (1973-04-01), Cofield
Gas Engineers Handbook, The Industrial Press, 1965 pp. 3/111-3/117.

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