Partial oxidation of sulfur-containing solid carbonaceous fuel
This patent concerns a process for the simultaneous partial oxidation and desulfurization of a sulfur and silicate-containing comminuted solid carbonaceous fuel comprising (basis solid fuel) about 0.2 to 8.0 wt. % sulfur and about 0.1 to 30 wt. % of silicate compounds including iron silicate and calcium silicate. The imrovement consists of reacting in the free-flow unobstructed down-flowing vertical refractory lined reaction zone of a partial oxidation gas generator a feed mixture comprising the solid carbonaceous fuel entrained in a gaseous or liquid carrier and supplemental iron-containing material with a controlled amount of free-oxygen containing gas and a temperature moderator. An equilibrium oxygen concentration is provided in the gas phase in the reaction zone with a partial pressure which is less than about 10/sup -7/ atmosphere, the O/C atomic ratio is in the range of about 0.5 to 1.3, the H/sub 2/O/solid carbonaceous fuel weight ratio in the range of about 0.2 to 1.0, the total atoms of iron in the reaction zone is in the range of about 1.3 to 3.0 times the atoms of sulfur in the solid carbonaceous fuel plus about 0.5 to 2.0 times the atoms of silicon in the ash, and about 70 to 99.8 wt. % of the carbon in the solid carbonaceous fuel is converted into carbon oxides. A raw effluent gas mixture is produced and discharged through a central vertical outlet in the bottom of the reaction zone, the effluent gas stream comprising H/sub 2/, CO, CO/sub 2/, at least one gas selected from the group consisting of H/sub 2/O, N/sub 2/, CH/sub 4/ and A.
- Assignee:
- Texaco Inc., White Plains, NY
- Patent Number(s):
- US 4808386
- OSTI ID:
- 6241925
- Country of Publication:
- United States
- Language:
- English
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Partial oxidation of sulfur-containing solid carbonaceous fuel
Partial oxidation of sulfur-containing solid carbonaceous fuel
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ALKALINE EARTH METAL COMPOUNDS
ALKANES
CALCIUM COMPOUNDS
CALCIUM SILICATES
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON MONOXIDE
CARBON OXIDES
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMICAL REACTORS
COAL FINES
DESULFURIZATION
ELEMENTS
HYDROCARBONS
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
IRON COMPOUNDS
IRON SILICATES
MATERIALS
METHANE
NITROGEN
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PARTIAL OXIDATION PROCESSES
QUANTITY RATIO
REMOVAL
SILICATES
SILICON COMPOUNDS
SULFIDES
SULFUR COMPOUNDS
SULFUR CONTENT
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
VERY HIGH TEMPERATURE
WATER