Gas: heating and illuminating – Processes – Fuel mixtures
Patent
1975-12-05
1976-08-31
Lindsay, Jr., Robert L.
Gas: heating and illuminating
Processes
Fuel mixtures
48210, 260449M, C10K 100
Patent
active
039778436
ABSTRACT:
An improved method for removing sulfur compounds during coal gas methanation comprising removing essentially all carbon dioxide and hydrogen sulfide from synthesis gas, then adding carbon dioxide containing lower levels of sulfur back to the gas stream before feeding the mixture to a desulfurization reactor. Carbon dioxide, at levels above about 12 percent, will prevent high temperature methanation runaways in the hydrodesulfurization reactor, where a stream consisting essentially of hydrogen sulfide and methanation materials is produced, the lower level of hydrogen sulfide produced being removed by conventional methods before proceeding to methanation units. The carbon dioxide can be supplied either from an outside source or can be obtained from the synthetic natural gas after methanation.
REFERENCES:
patent: 3551124 (1970-12-01), Iwaki et al.
patent: 3625664 (1971-12-01), Padovani
patent: 3901667 (1975-08-01), Herrmann
Casad Burton M.
Dew John N.
Harlacher Eugene A.
Kleinpeter Joseph A.
Continental Oil Company
Lindsay, Jr. Robert L.
Schupbach, Jr. Cortlan R.
Yeung George C.
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