초록 ▼

Synthesis gas, reducing gas, or fuel gas is produced by the partial oxidation of ash-containing solid carbonaceous and/or liquid hydrocarbonaceous fuel at an autogenous temperature in the range of about 20°F. to 200°F. below the softening temperature of the ash in said fuel, and at a pressure in the

Synthesis gas, reducing gas, or fuel gas is produced by the partial oxidation of ash-containing solid carbonaceous and/or liquid hydrocarbonaceous fuel at an autogenous temperature in the range of about 20°F. to 200°F. below the softening temperature of the ash in said fuel, and at a pressure in the range of about 17 to 100 atmospheres to produce a raw effluent gas stream containing entrained carbon-rich fly-ash which is separated from the effuent gas stream. A fuel mixture comprising about 20 to 100 wt. % of said carbon-rich fly-ash and about 0 to 80 wt. % of a supplemental fuel is reacted by partial oxidation at an autogenous temperature of about 100°F. above the ash-fusion temperature, and at a reduced pressure e.g. in the range of about 1 to 16 atmospheres and at least 16 atmospheres below the pressure in the partial oxidation reaction used to produce said carbon-rich fly-ash. By reducing the pressure less carbon-rich particulate material is produced in the second partial oxidation reaction at a significant cost savings and improved process efficiency.

대표청구항 ▼

A partial oxidation process for producing synthesis gas, reducing gas or fuel gas from a fuel feedstock comprising ashcontaining solid carbonaceous and/or liquid hydrocarbonaceous fuel comprising the steps of: (1) reacting said fuel feedstock by partial oxidation with a free-oxygen containing gas an

A partial oxidation process for producing synthesis gas, reducing gas or fuel gas from a fuel feedstock comprising ashcontaining solid carbonaceous and/or liquid hydrocarbonaceous fuel comprising the steps of: (1) reacting said fuel feedstock by partial oxidation with a free-oxygen containing gas and a temperature moderator in a free-flow vertical refractory-lined gas generator at an autogenous temperature in the range of about 20°F. to 200°F. below the softening temperature of the ash in said fuel, a pressure in the range of about 17 to 100 atmospheres, an O/C atomic ratio in the range of about 0.6 to 1.4, and a weight ratio of H2O to carbon in the fuel feedstock in the range of about 0.3 to 4.0, to produce a raw gas stream comprising synthesis gas, reducing gas, or fuel gas with entrained carbon-rich fly-ash; (2) separating said carbon-rich fly-ash from said raw gas stream; (3) reacting a fuel comprising from about 20 to 100 wt. % of said carbon-rich fly-ash and about 0 to 80 wt.% comprising a supplemental fuel comprising ash-containing solid carbonaceous and/or liquid hydrocarbonaceous fuel by partial oxidation with a free-oxygen containing gas and a temperature moderator in a free-flow vertical refractory-lined gas generator at an autogenous temperature in the range of at least about 100°F. above the fluid temperature of the slag produced, a pressure in the range of about 1 to 16 atmospheres and at least 16 atmospheres below the pressure in the gas generator in (1), an O/C atomic ratio in the range of about 0.6 to 1.3, and a weight ratio of H2O to fuel in the range of about 0.1 to 5.0, to produce a raw product gas stream comprising synthesis gas, reducing gas, or fuel gas with entrained molten slag and containing less carbon-rich particulate material than that which would be produced if said fuel is reacted by partial oxidation at substantially the same operating conditions as those in the gas generator in (3) except for a higher pressure which is in the range of about 17 to 100 atmospheres; and (4) cooling said raw gas stream from (3).