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

Production of mixtures of carbon monoxide and hydrogen

Patent ·
OSTI ID:6720391
This patent describes a continuous process of producing mixtures of hydrogen and carbon monoxide serving as feed gas to a hydrocarbon synthesis process and containing controlled molecular proportions of hydrogen from solid carbonaceous materials and steam. The process involves continuously feeding fresh finely divided carbonaceous solids to a heated water gas-generation zone; continuously circulating solid carbonaceous residue of the water-gas reaction to a heating zone; continuously supplying part of the heat generated by said combustion to said water-gas reaction in the form of sensible heat of solid combustion residue returned from said heating zone to said water gas-generation zone; and continuously subjected steam to a reducing treatment at a steam-reducing temperature. The process then requires continuously regenerating reduced metal oxide in a separate regeneration zone by reducing metal oxide in a similarly fluidized bed of solids heated to a temperature higher than said steam-reducing temperature by said hot combustible gas and reduced. Then continuously supply to said steam-reducing treatment at least part of said hot water gas together with reduced metal oxide from said regenerating zone to control the molecular ratio of hydrogen to carbon monoxide in the gas from said steam-reducing treatment. This is done by controlling the amounts of hot water gas and steam fed into the system. The process culminates by mixing said gas with any remaining water gas bypassing the steam-reducing treatment and recovering the hydrogen-enriched mixture.
Assignee:
Standard Oil Development Co., DE
Patent Number(s):
US 2640034
OSTI ID:
6720391
Country of Publication:
United States
Language:
English