Abstract: The present invention relates to an enhanced oil recovery process that is integrated with a synthesis gas generation process, such as gasification or reforming, involving capture and recycle of a sour carbon dioxide stream for EOR use.

Abstract: The present invention relates to an enhanced oil recovery process that is integrated with a synthesis gas generation process, such as gasification or methane reforming, involving combined capture and recycle of carbon dioxide from both processes.

Abstract: The present invention relates to an enhanced oil recovery process that is integrated with a synthesis gas generation process, such as gasification or methane reforming, involving combined capture and recycle of carbon dioxide from both processes.

Abstract: A compactor feeder and methods for feeding relatively low-density biomass materials into a grinding device (such as a hammer mill) is described. The compactor feeder increases the density of the relatively low-density biomass materials in order to fill the grinding device with the biomass materials at a rate that is sufficient to substantially equal the design capacity of the grinding device.

Abstract: A high efficiency gasification process for converting carbonaceous solids to methane and apparatus for its practice are described. The process includes reacting steam and carbonaceous solids comprising ash in the presence of alkali metal catalyst in a gasification reactor to produce combustible gases and char particles comprising ash and alkali metal catalyst constituents, treating a stream of such char particles in an alkali metal catalyst recovery system to recover the catalyst constituents as alkali metal compounds, and recycling such recovered compounds.

Abstract: The present invention relates to a 2-mode processes for preparing gaseous products, and in particular a hydrogen product stream, via the hydromethanation of carbonaceous feedstocks in the presence of steam, carbon monoxide, hydrogen and a hydromethanation catalyst in a first mode, and a partial oxidation of methane in a second mode.

Abstract: The present invention relates to an integrated process for preparing combustible gaseous products via the hydromethanation of carbonaceous feedstocks in the presence of steam, carbon monoxide, hydrogen, a hydromethanation catalyst and optionally oxygen, and generating electrical power from those combustible gaseous products as well as a hydrogen and/or methane by-product stream.

Abstract: The present invention relates to an integrated process for preparing combustible gaseous products via the hydromethanation of carbonaceous feedstocks in the presence of steam, carbon monoxide, hydrogen, a hydromethanation catalyst and optionally oxygen, and generating electrical power from those combustible gaseous products.

Abstract: The present invention relates to processes for preparing gaseous products, and in particular methane and/other value added gases such as hydrogen, via the catalytic hydromethanation of a carbonaceous feedstock in the presence of steam and syngas, wherein a hydromethanation reactor is combined with a syngas generator in a particular combination.

Abstract: Processes are described for the extraction and recovery of alkali metal from the char that results from catalytic gasification of a carbonaceous material. Among other steps, the processes of the invention include a hydrothermal leaching step in which a slurry of insoluble particulate comprising insoluble alkali metal compounds is treated with carbon dioxide and steam at elevated temperatures and pressures to effect the conversion of insoluble alkali metal compounds to soluble alkali metal compounds. Further, processes are described for the catalytic gasification of a carbonaceous material where a substantial portion of alkali metal is extracted and recovered from the char that results from the catalytic gasification process.

Abstract: Processes are described for the extraction and recovery of alkali metal from the char that results from catalytic gasification of a carbonaceous material. Among other steps, the processes of the invention include a hydrothermal leaching step in which a slurry of insoluble particulate comprising insoluble alkali metal compounds is treated with carbon dioxide and steam at elevated temperatures and pressures to effect the conversion of insoluble alkali metal compounds to soluble alkali metal compounds. Further, processes are described for the catalytic gasification of a carbonaceous material where a substantial portion of alkali metal is extracted and recovered from the char that results from the catalytic gasification process.

Abstract: The present invention relates to processes for preparing gaseous products, and in particular a hydrogen product stream and optionally a methane product stream, via the hydromethanation of carbonaceous feedstocks in the presence of steam, carbon monoxide, hydrogen and a hydromethanation catalyst.

Abstract: The present invention relates to processes for preparing gaseous products, and in particular methane, via the hydromethanation of a carbonaceous feedstock in the presence of steam, syngas, a hydromethanation catalyst and an oxygen-rich gas stream.

Abstract: The present invention relates to processes for preparing gaseous products, and in particular methane, via the catalytic hydromethanation of a carbonaceous feedstock in the presence of steam, syngas and an oxygen-rich gas stream.

Abstract: The present invention relates to processes for preparing gaseous products, and in particular methane, via the hydromethanation of carbonaceous feedstocks in the presence of steam, carbon monoxide, hydrogen and a hydromethanation catalyst.

Abstract: The present invention relates to processes and continuous processes for preparing gaseous products, and in particular, methane via the catalytic gasification of carbonaceous feedstocks in the presence of steam. In one aspect of the invention, the processes comprise at least partially combusting a first carbonaceous feedstock with an oxygen-rich gas stream, a recycle steam stream, and an aqueous make-up stream in an oxygen-blown gasifier, under suitable temperature and pressure, to generate a first gas stream comprising hydrogen, carbon monoxide and superheated steam; and reacting a second carbonaceous feedstock and the first gas stream in a catalytic gasifier in the presence of a gasification catalyst under suitable temperature and pressure to form a second gas stream comprising a plurality of gaseous products comprising methane, carbon dioxide, hydrogen, carbon monoxide and hydrogen sulfide.

Abstract: Processes are provided for preparing a substantially free-flowing alkali metal gasification catalyst-loaded carbonaceous particulate suitable for use as a feedstock for the production of gaseous products, and in particular methane, via the catalytic gasification of the catalyst-loaded carbonaceous particulate in the presence of steam.

Abstract: Processes are provided for preparing a substantially free-flowing alkali metal gasification catalyst-loaded coal particulate suitable for use as a feedstock for the production of gaseous products, and in particular methane, via the catalytic gasification of the catalyst-loaded coal particulate in the presence of steam.

Abstract: The invention provides processes for generating a methane-enriched gas from a gas mixture comprising carbon monoxide and hydrogen such as gas streams generated by gasification of an alkali metal catalyst-loaded carbonaceous feedstock, and a char methanation catalyst useful in such processes.

Abstract: The present invention relates to processes for preparing gaseous products, and in particular, methane via the catalytic gasification of carbonaceous feedstocks in the presence of steam. The processes comprise using at least one methanation step to convert carbon monoxide and hydrogen in the gaseous products to methane and do not recycle carbon monoxide or hydrogen to the catalytic gasifier.