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
- Resource Relation:
- Patent File Date: Filed date 24 Sep 1987
- 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
Related Subjects
CARBONACEOUS MATERIALS
PARTIAL OXIDATION PROCESSES
CALCIUM SILICATES
CARBON DIOXIDE
CARBON MONOXIDE
CHEMICAL REACTORS
COAL FINES
DESULFURIZATION
HYDROGEN
HYDROGEN SULFIDES
IRON SILICATES
METHANE
NITROGEN
QUANTITY RATIO
REMOVAL
SILICATES
SULFUR CONTENT
VERY HIGH TEMPERATURE
WATER
ALKALINE EARTH METAL COMPOUNDS
ALKANES
CALCIUM COMPOUNDS
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
ELEMENTS
HYDROCARBONS
HYDROGEN COMPOUNDS
IRON COMPOUNDS
MATERIALS
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
SILICON COMPOUNDS
SULFIDES
SULFUR COMPOUNDS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
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