High temperature desulfurization of synthesis gas
This patent describes 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-containing solid carbonaceous fuel containing about 0.2 to 8.0 wt. % sulfur by partial oxidation with controlled amounts of free-oxygen containing gas and temperature moderator in a first free-flow refractory lined reaction zone of a gas generator at an autogenous temperature in the range of about 1900F to 2900F and a pressure in the range of about 2 to 250 atmospheres so that an equilibrium oxygen concentration with a partial pressure which is less than about 10/sup -12/ atmospheres is provided in the gas phase in the first reaction zone and in downstream second reaction zone; and in the first reaction zone the O/C atomic ratio is in the range of about 0.3 to 1.1, the weight ratio of water to solid carbonaceous fuel plus liquid hydrocarbonaceous material, if any, is in the range of about 0.03 to 0.70, about 70 to 98 wt. % of the carbon in the sulfur-containing fuel is converted into carbon oxides, thereby producing a hot gas stream including a raw product gas mixture comprising H/sub 2/, CO, CO/sub 2/, H/sub 2/S, COS at least one gas selected from the group consisting of H/sub 2/O, N/sub 2/, CH/sub 4/, and A and entrained material comprising particulate carbon, unreacted fuel if any, and molten slag; and the temperature is above the softening temperature of the ash in the fuel, and at least 90 wt % of the sulfur in the fuel in the first reaction zone is converted into sulfur-containing gas.
- Assignee:
- Texco Inc., White Plains, NY
- Patent Number(s):
- US 4776860
- OSTI ID:
- 6803844
- Resource Relation:
- Patent File Date: Filed date 13 Oct 1987
- Country of Publication:
- United States
- Language:
- English
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01 COAL, LIGNITE, AND PEAT
03 NATURAL GAS
COAL
GASIFICATION
FUEL GAS
PRODUCTION
PETROLEUM
SYNTHESIS GAS
CALCIUM COMPOUNDS
CARBON OXIDES
DESULFURIZATION
FLY ASH
FUEL ADDITIVES
HYDROGEN PRODUCTION
PARTIAL OXIDATION PROCESSES
ADDITIVES
AEROSOL WASTES
ALKALINE EARTH METAL COMPOUNDS
ASHES
CARBON COMPOUNDS
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
GAS FUELS
GASES
MATERIALS
OXIDES
OXYGEN COMPOUNDS
RESIDUES
THERMOCHEMICAL PROCESSES
WASTES
020400* - Petroleum- Processing
010404 - Coal
Lignite
& Peat- Gasification
030300 - Natural Gas- Drilling
Production
& Processing