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US 4,066,420 AGranted
Process for the gasification of solid fuels
AssigneeDr. C. Otto & Comp. G.m.b.H.
InventorsWilhelm Danguillier, Wolfgang Grams
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AssigneeDr. C. Otto & Comp. G.m.b.H.
InventorsWilhelm Danguillier, Wolfgang Grams
Estimating the term…
A process for gasification of pulverized or fine-grain coal is characterized by using a portion of the combustible gas generated at a temperature between 1500.degree. and 2200.degree. C in a slag bath generator as a gaseous agent that is mixed with the coal and then introduced under pressure into the slag bath generator. The portion of the combustible gas to be used for this purpose undergoes processing which includes extracting dust, cooling and drying before the gas is combined with the fuel. According to a different embodiment, the combustible gas produced in the generator is used in the reduction process by feeding the gas into a reduction shaft furnace. The top gas from the shaft furnace is processed by extracting dust, cooling, drying and normalizing the acidity of the top gas before the top gas is combined with fuel for introduction as a mixture into the slag bath generator.
A process for the gasification of pulverized or fine-grain coal which is introduced as a mixture with a gaseous agent consisting essentially of CO, H.sub.2 and CO.sub.2 in a slag bath generator, said process including the steps of combining said gaseous agent with said coal to form a mixture, introducing said mixture into a slag bath generator, gasifying the coal in the presence of introduced gasifying medium and of included ash in the coal in said generator at a temperature of between 1500.degree. C and 2200.degree. C, withdrawing liquid slag from said slag bath generator, and using a portion of the combustible gas generated by said slag bath generator as said gaseous agent.
Dependencies are inferred from the claim text.