Method and device for reprocessing wet waste materials containing organic components
AssigneeHolcim Technology Ltd
InventorUrs GASSER
Life of this patent
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Abstract
In a method for reprocessing wet waste materials containing organic components, in particular sludges in a cement clinker production plant, in which raw meal is preheated in a preheater (3) in countercurrent flow to the hot exhaust gases of a clinker furnace (2), and calcined in a calciner (4) fired with alternative fuels, the wet waste materials are dried in a drying unit (18) using a hot gas produced from the preheater waste heat and the dried waste materials and the drier exhaust gases are discharged from the drying unit (18), wherein the drier exhaust gases are introduced into the calciner (4).
Claims20
1-22. (canceled)
A method for reprocessing wet waste materials containing organic components comprising sludges in a cement clinker production plant, said method comprising:
- preheating raw meal in a preheater and generating preheater waste heat, wherein in said preheating the raw material is introduced and fed through the preheater in a countercurrent to flow to hot exhaust gases from a clinker furnace that are introduced in the preheater, calcining in a calciner fired with alternative fuels, drying the wet waste materials in a drying unit using a hot gas produced from the preheater waste heat, discharging the dried waste materials and the drier exhaust gases from the drying unit, feeding the drier exhaust gases into the calciner, drawing off a partial quantity of the hot gas before the drying unit and cooling the drawn off hot gas in a heat exchanger with the drier exhaust gases, and, forwarding the cooled hot gas to the drying unit as sealing gas.
Dependencies are inferred from the claim text.