Synthesis gas from slurries of solid carbonaceous fuels

Patent · Tue Mar 13 04:00:00 EST 1984

OSTI ID:6616800

Estabrook, L E; Suggitt, R M

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/sup 0/ F. to 2900/sup 0/ 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, H/sub 2/O 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 H/sub 2/ and CO /SUB x/ . The hot effluent gas stream enters the radiant cooler at a temperature in the range of about 2800/sup 0/ F.-2300/sup 0/ F. and leaves at a temperature in the range of about 1350/sup 0/ F.-1600/sup 0/ 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.

• Assignee: Texaco Dev. Corp.
• Patent Number(s): US 4436531
• OSTI ID: 6616800
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
ALKALI METAL COMPOUNDS
ALKALI METALS
ALKALINE EARTH METAL COMPOUNDS
AQUEOUS SOLUTIONS
ASH CONTENT
CARBONACEOUS MATERIALS
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL REACTIONS
COAL GASIFICATION
DISPERSIONS
ELEMENTS
FLUIDS
FUEL SLURRIES
FUELS
GASES
GASIFICATION
HYDROGEN COMPOUNDS
MATERIALS
METALS
MIXTURES
OXYGEN COMPOUNDS
PARTIAL OXIDATION PROCESSES
SLAGS
SLURRIES
SOLUTIONS
SUSPENSIONS
SYNTHESIS GAS
TEXACO GASIFICATION PROCESS
THERMOCHEMICAL PROCESSES
VERY HIGH TEMPERATURE
WATER