초록 ▼

Synthesis gas, fuel gas, or reducing gas is produced by the noncatalytic partial oxidation of a slurry of ash-containing solid carbonaceous fuel in a liquid carrier with a free-oxygen containing gas in the free-flow reaction zone of a refractory lined gas generator at an autogenous temperature in th

Synthesis gas, fuel gas, or reducing gas is produced by the noncatalytic partial oxidation of a slurry of ash-containing solid carbonaceous fuel in a liquid carrier with a free-oxygen containing gas in the free-flow reaction zone of a refractory lined gas generator at an autogenous temperature in the range of about 2350°F. to 2900°F. so that about 75 to 95 weight percent of the carbon in the fuel feed to the reaction zone is converted into carbon oxides. The hot effluent gas stream from the reaction zone containing entrained particulate carbon, unconverted solid carbonaceous fuel, and molten slag is passed through a free-flow radiant cooler where it is contacted by and provides the heat to vaporize an aqueous solution of catalyst consisting of alkali metal and/or alkaline earth metal compound in water. In the presence of the catalyst, H2O and at least a portion of the particulate carbon and the carbon in the unconverted solid carbonaceous fuel are reacted together at a controlled temperature to produce additional H2 and COx. The hot effluent gas stream enters the radiant cooler at a temperature in the range of about 2800° F.-2300°F. and leaves at a temperature in the range of about 1350°F.-1600°F. Further, the molten slag in the effluent gas stream may be fluxed with the alkali metal and/or alkaline earth metal compound to facilitate separation of the slag from the effluent gas stream.

대표청구항 ▼

A continuous process for the production of synthesis gas, fuel gas, or reducing gas from a slurry of an ash-containing solid carbonaceous fuel comprising, (1) reacting about 75 to 95 weight percent of the carbon in said slurry of ash-containing solid carbonaceous fuel by noncatalytic partial oxidati

A continuous process for the production of synthesis gas, fuel gas, or reducing gas from a slurry of an ash-containing solid carbonaceous fuel comprising, (1) reacting about 75 to 95 weight percent of the carbon in said slurry of ash-containing solid carbonaceous fuel by noncatalytic partial oxidation with a free-oxygen containing gas and in the presence of a temperature moderator in the free-flow refractory lined reaction zone of a gas generator at an autogenous temperature in the range of about 2350°F. to 2900°F. and a pressure in a range of about 10 to 200 atmospheres to produce a hot stream of gas comprising H2, CO, CO2, and at least one material selected from the group consisting of H2, N2, H2S, COS, CH4, NH3, A, HCl, HCN, and containing entrained matter comprising particulate carbon, the remainder of the unconverted ash-containing solid carbonaceous fuel, and molten slag; (2) passing the hot gas stream into a gas cooling zone including a radiant cooler provided with an unobstructed central passage through which the hot gas stream is passed; contacting said hot gas stream within said cooling zone with an aqueous solution of catalyst consisting of a water soluble alkali metal compound and/or an alkaline earth metal compound and water, wherein the alkali metal and/or the alkaline earth metal constituents of the compound are selected from the metals in the Periodic Table of Elements in Groups IA and/or IIA; and intimately mixing said catalyst solution with said entrained matter and vaporizing the water; (3) reacting in said gas cooling zone in the presence of said catalyst H2O and at least a portion of the particulate carbon and the carbon in the remainder of the unconverted ash-containing solid carbonaceous fuel entrained in said gas stream; and simultaneously reducing the temperature of said gas stream from an entering temperature in the range of about 2300°F. - 2800°F. to a discharge temperature in the range of about 1350°F. - 1600°F. by indirect heat exchange with a coolant; and (4) discharging from said gas cooling zone a partially cooled gas stream containing an increased amount of H2+COx.