Production of synthetic natural gas from coal gasification liquid by-products
In coal gasification processes for the production of synthetic natural gas by the reaction of coal with steam and oxygen under pressure to form a gasifier synthesis gas and a liquid hydrocarbon by-product, the liquid hydrocarbon by-product is treated for solids and metal removal and is then passed to a catalytic partial oxidation zone containing a monolithic platinum-palladium catalyst. The hydrocarbon by-product liquids are converted to secondary synthesis gas by being reacted with steam and oxygen. Optionally, the effluent from the catalytic partial oxidation zone may be passed through a second, steam reforming catalyst to react residual hydrocarbons with water to produce hydrogen and carbon oxides. The gasifier and secondary synthesis gases may be treated to remove acid gases therefrom and then methanated to provide a product synthetic natural gas.
- Assignee:
- Engelhard Corporation
- Patent Number(s):
- US 4483691
- OSTI ID:
- 6038918
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
010400* -- Coal
Lignite
& Peat-- Processing
BY-PRODUCTS
CATALYTIC REFORMING
CHEMICAL REACTIONS
COAL GASIFICATION
COAL LIQUIDS
DEMETALLIZATION
ELEMENTS
FLUIDS
FUEL GAS
FUELS
GAS FUELS
GASES
GASIFICATION
HIGH BTU GAS
HYDROCARBONS
HYDROGEN PRODUCTION
LIQUID WASTES
LIQUIDS
METALS
ORGANIC COMPOUNDS
PRODUCTION
REFORMER PROCESSES
REMOVAL
SEPARATION PROCESSES
SOLIDS
STEAM REFORMER PROCESSES
THERMOCHEMICAL PROCESSES
WASTES