Process for the gasification of sewage sludge
OwnerRolf Haukinventor
Life of this patent
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Abstract
A process for the gasification of sewage sludge or other carbon-containing waste materials in a gasifier (1) is described. A solid fuel and oxygen-containing gas are also fed into said gasifier. The residues formed during gasification collect at the bottom of the gasifier in the form of molten slag. Gasification takes place in a fluidized bed (9) formed above the slag bath and constituted by the dried sewage sludge or waste materials, the solid fuel, the oxygen-containing gas and the gasification gas. The gas produced in the gasifier can be used for power generation or as a reducing gas for iron ore. Sponge iron can simultaneously be melted in the gasifier and reduced to pig iron.
Claims9
Process for the gasification of sewage sludge or other carbon-containing waste materials in a gasifier having bottom, a middle and upper areas, comprising steps of:
- feeding sewage sludge or other carbon-containing waste materials, a solid fuel and oxygen-containing gas into a gasifier, producing gasification gas in the gasifier and forming a slag bath adjacent to the bottom of said gasifier, forming a fluidized bed above the slag bath, said fluidized bed being formed from the sewage sludge or other carbon-containing waste materials, the solid fuel, the oxygen-containing gas and the gasification gas.
Dependencies are inferred from the claim text.