Process for production of H2 rich synthesis gas from coal/steam with Cu—Fe-alumina based catalysts
AssigneeU.S. Department of Energy
InventorRanjani Siriwardane
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Abstract
Materials, methods to prepare, and methods of use for producing an H2 rich synthesis gas stream from coal free of nitrogen is described. One embodiment of the method comprises. The method includes an oxygen carrier at least partially reduced using a fuel in a reactor forming a reduced metal oxide comprised of first series—3d block-transition metals or mixture thereof. The reduced metal oxide is reacted with the solid fuel/steam to produce H2 and CO2/CO in the reactor; and the reduced metal oxide is added separately or simultaneously with a solid fuel while not impregnating the solid fuel with the reduced metal oxide.
Claims3
A method for producing a syngas from a reduced metal aluminate catalyst, a steam, and a solid fuel consisting of:
- reducing the metal aluminate catalyst selected from one or more transition metal aluminates using the solid fuel for producing the reduced metal aluminate catalyst, wherein the one or more transition metal aluminates is selected from the group consisting of Cu+1, Cu0, and Fe+2,
- continuously delivering the steam and the solid fuel to the reduced metal aluminate catalyst;
- and
- supplying a heat for producing a continuous stream of syngas, wherein the syngas comprises a product stream consisting of at least >than 50 vol % of H2 and CO,
- wherein the solid fuel consisting of a solid carbonaceous fuel selected from the group consisting of a coal, coke, char biomass and biofuel, and
- wherein a reaction temperature for producing the syngas from the reduced metal aluminate catalyst, the stream and the solid fuel are greater than 500° C.
Dependencies are inferred from the claim text.