Abstract:
A method of producing end treating synthesis gas in which a biomass-rich material is gasified in a gasifier containing a fluidized bed at a temperature that does not exceed 750°C to produce a crude synthesis gas product. The crude synthesis gas then is quenched, scrubbed, and then subjected to at least one adsorption step to provide a clean synthesis gas. The clean synthesis gas then may be reformed catalytically to provide a synthesis gas with a dosired H 2 :CO ratio, and/or may be employed in the synthesis of desired chemicals.
Abstract:
A method for co-producing a sulfur-containing raw synthetic gas and an essentially desulfurized solid residue from a sulfur-containing heavy petroleum residue feedstock, comprising feeding a bubbling fluidized-bed gasification reactor with the feedstock, and converting the feedstock to a raw synthetic gas by a partial oxidation reaction in the presence of water at a temperature at or below about 1000 o C and a pressure at or below about 10 atm, thereby also producing an essentially desulfurized solid residue, while the sulfur components are essentially comprised in the raw synthetic gas; and separately recovering the essentially desulfurized solid residue and the sulfur-containing raw synthetic gas.
Abstract:
A process for converting methanol to ethanol which comprises reacting methanol and carbon monoxide in the presence of a catalyst to produce a product comprising at least 25 mole% methyl acetate and, in some instances, acetic acid. The acetic acid then is reacted with at least one alcohol to produce at least one acetate selected from methyl acetate, ethyl acetate, and butyl acetate. The at least one acetate (if produced) and the methyl acetate produced as a result of reacting methanol and carbon monoxide then are hydrogenated to produce ethanol. Syngas may be produced from biomass to produce all or a portion of the methanol, hydrogen, and carbon monoxide requirements for the process.
Abstract:
A process for producing synthesis gas from biomass in which biomass is contacted with oxygen and steam, wherein the oxygen is present in an amount effective to oxidize the biomass partially and to heat the biomass to a temperature of at least 500°C and no greater than 750°C At least a portion of the partially oxidized biomass then is treated with oxygen and steam to heat the biomass to a temperature of at least 800°C, thereby producing a synthesis gas, which then is recovered
Abstract:
A process for producing synthesis gas from biomass in which biomass is contacted with oxygen and steam, wherein the oxygen is present in an amount effective to oxidize the biomass partially and to heat the biomass to a temperature of at least 500°C and no greater than 750°C At least a portion of the partially oxidized biomass then is treated with oxygen and steam to heat the biomass to a temperature of at least 800°C, thereby producing a synthesis gas, which then is recovered