Method of at least partially burning a hydrocarbon and/or carbonaceous fuel
A method of at least partially burning a hydrocarbon and/or carbonaceous fuel in order to yield hot gaseous products of relatively low pollutant content, in which the fuel is partially burned in a first stage flame under such conditions that the partially combusted fuel has a temperature in the range 800 to 1600/sup 0/ C, (e.g., about 1150/sup 0/ C) and is substantially fre smoke and/or carbon, bringing the partially combusted fuel at 800 to 1600/sup 0/ C. Into contact with a substantially non-volat catalyst which is active for reducing the amount of nox in the partially combusted fuel, and then at least partially burning the partially combusted fuel, after contact with the catalyst in a second stage flame to yield the desired low pollutant hot gaseous products. Preferably one or both of the said flames burns in contact with a substantially non-volatile catalyst to reduce still further the nox content of the final gaseo products. The preferred non-volatile catalysts comprise either a mixture of iron and chromium oxides or cobalt oxide.
- Assignee:
- Exxon Research and Engineering Co
- Patent Number(s):
- US 4375949
- OSTI ID:
- 6480979
- Country of Publication:
- United States
- Language:
- English
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CARBONACEOUS MATERIALS
CATALYSTS
CHALCOGENIDES
CHEMICAL REACTIONS
CHROMIUM COMPOUNDS
CHROMIUM OXIDES
COBALT COMPOUNDS
COBALT OXIDES
COMBUSTION
EQUIPMENT
HYDROCARBONS
IRON COMPOUNDS
IRON OXIDES
MATERIALS
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL EQUIPMENT
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS