Hydrocarbon synthesis process with two-stage coke gasification
This patent describes an improved process for the catalytic synthesis of hydrocarbons from CO and H/sub 2/ by passing steam and carbonaceous solids to an initial gasification stage, carrying out a water-gas reaction in said stage, and passing water gas wherein the H/sub 2/ to CO ratio is at least 1.0 to an initial hydrocarbon synthesis reaction zone. This occurs while maintaining a fluidized bed of iron-containing synthesis catalyst and hydrocarbon synthesis conditions in said zone. A tail gas is removed from the cycle having a higher H/sub 2/ to CO ratio than said feed gas to said zone, which is passed to a second-stage hydrocarbon synthesis reaction zone. Partially spent carbonaceous solids of relatively low carbon content from said primary gasification zone are passed to a second gasification zone with steam, CO/sub 2/, and a free oxygen-containing gas to said last-named zone. Water gas-generation conditions are maintained in said last-named zone to give a relatively high steam conversion.
- Assignee:
- Standard Oil Development Co., DE
- Patent Number(s):
- US 2620348
- OSTI ID:
- 6747234
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
010404* -- Coal
Lignite
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090121 -- Hydrocarbon Fuels-- Chemical Synthesis-- (1976-1989)
10 SYNTHETIC FUELS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CARBONACEOUS MATERIALS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
DESIGN
ELEMENTS
FLUIDIZED BEDS
FLUIDS
FUEL GAS
FUELS
FUNCTIONAL MODELS
GAS FUELS
GAS GENERATORS
GASES
GASIFICATION
HYDROCARBONS
HYDROGEN FUELS
INTERMEDIATE BTU GAS
IRON
MATERIALS
METALS
OPERATION
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PROCESS DEVELOPMENT UNITS
PRODUCTION
STEAM
SYNTHESIS
SYNTHESIS GAS
SYNTHETIC FUELS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENTS
WATER GAS
WATER GAS PROCESSES