초록 ▼

Synthesis gas, fuel gas, or reducing gas is produced by the noncatalytic partial oxidation of a sulfur-containing liquid hydrocarbonaceous fuel or a slurry of sulfur-containing solid carbonaceous fuel with a free-oxygen containing gas in the first free-flow reaction zone located in a refractory line

Synthesis gas, fuel gas, or reducing gas is produced by the noncatalytic partial oxidation of a sulfur-containing liquid hydrocarbonaceous fuel or a slurry of sulfur-containing solid carbonaceous fuel with a free-oxygen containing gas in the first free-flow reaction zone located in a refractory lined gas generator at an autogenous temperature in the range of about 1900°F. to 2900°F. and above the ash-fusion temperature of the slag formed in the reaction zone. About 85 to 99 weight percent of the carbon in the fuel feed to the reaction zone is converted into carbon oxides. At least a portion of the hot effluent gas stream from the reaction zone is passed through a free-flow second reaction zone R2 in admixture with a second portion of sulfur-containing fuel and an iron-containing additive. In the second reaction zone the carbon in the second portion of fuel, unconverted fuel and particulate matter from R1 react with H2O and/or CO2 to produce supplemental H2 and/or carbon oxides. Further, at least a portion of the sulfur-containing gases e.g. H2S and COS react with the iron-containing additive to produce particulate matter comprising iron oxysulfide. Further, a portion of this newly formed particulate matter and/or the iron-containing additive combine with molten slag and/or ash in the hot raw gas stream passing through the second gas cooler. The slag produced thereby has a reduced ash fusion temperature and a reduced viscosity. The remainder of the newly formed particulate matter comprising iron oxysulfide and particulate carbon are entrained in the effluent gas stream leaving the second reaction zone and are separated from the effluent gas stream and optionally recycled to the partial oxidation reaction zone in admixture with fresh fuel feed.

대표청구항 ▼

A continuous process for the production of desulfurized synthesis gas, fuel gas, or reducing gas comprising: (1) reacting a first portion of sulfur-containing heavy liquid hydrocarbonaceous fuel and/or sulfur-conatining solid carbonaceous fuel by partial oxidation with a free-oxygen containing gas a

A continuous process for the production of desulfurized synthesis gas, fuel gas, or reducing gas comprising: (1) reacting a first portion of sulfur-containing heavy liquid hydrocarbonaceous fuel and/or sulfur-conatining solid carbonaceous fuel by partial oxidation with a free-oxygen containing gas and in the presence of a temperature moderator in a first free-flow refractory lined reaction zone of a gas generator at an autogenous temperature in the range of about 1900°F. to 2900°F. and a pressure in the range of about 2 to 250 atmospheres to produce a hot stream of synthesis gas, reducing gas, or fuel gas comprising H2, C, CO2, H2S, COS and at least one gaseous material selected from the group consisting of H2O, N2, CH4, NH3, A, and containing entrained material comprising particulate carbon, unreacted fuel if any, and slag; (2) passing at least a portion of the hot gas stream from 91) in admixture with a second portion of said fuel and an ironcontaining additive through a second unobstructed free-flow refractory lined reaction zone wherein sufficient iron-containing additive is introduced into the second reaction zone so as to provide iron atoms in the amount of about 1.1 to 1.8 times the atoms of sulfur in the second reaction zone plus about 0.3 to 1.2 times the atoms of silicon in the ash in the second reaction zone, and the mole ratio of H2O and/or CO2 to carbon in the second reaction zone is in the range of about 0.7 to 25; (3) devolatilizing said second portion of sulfur-containing fuel and reacting in said second reaction zone at a temperature below that in said first reaction zone and in the absence of additional free-oxygen containing gas, (i) H2O and/or C2 with carbon from said second portion of fuel, particulate carbon and any unreacted portion of said first portion of fuel, to produce supplemental H2 and carbon oxides, and (ii) said iron-containing additive with the sulfur containing gases in the gas streams produced in steps (1) and (2) to produce particulate matter comprising iron oxysulfide; and combining in said second reaction zone a portion of said newly formed particulate matter and/or iron-containing additive with slag and/or ash to produce slag having a reduced ash softening temperature and a reduced viscosity; and, (4) discharging from said second reaction zone a stream of synthesis gas, reducing gas, or fuel gas and slag; and in comparison with a gas stream produced without the introduction of said iron-containing additive in (2), the gas stream discharged from the second reaction zone contains a reduced amount of sulfur-containing gases, and increased amounts of H2+carbon oxides and iron oxysulfide particulate matter.