Method for treating alternative, carbon-containing,...

C - Chemistry – Metallurgy – 04 – B

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C04B 7/44 (2006.01) C10J 3/12 (2006.01) F23G 5/027 (2006.01) F27D 17/00 (2006.01)

Patent

CA 2733713

In a method for treating alternative, carbon-containing, low-caloric waste materials for use in furnace systems, in particular rotary tubular kilns for the production of clinker, the carbon-containing, alternative fuels are subjected to high-temperature gasification under anoxic conditions at temperatures above 1000°C, wherein water, water vapor or CO2 is injected to ensure a reaction forming CO and H2. The waste heat from a clinker cooler is used for the high-temperature gasification.

L'invention porte sur un procédé de traitement de déchets alternatifs, carbonés, faiblement caloriques, pour utilisation dans des installations de chauffe, en particulier dans des fours tubulaires rotatifs pour la fabrication de clinker. Dans ce procédé, les combustibles alternatifs carbonés sont soumis à une gazéification à haute température dans des conditions anoxiques à des températures supérieures à 1 000°C, opération au cours de laquelle on injecte de l'eau, de la vapeur d'eau ou de CO2 pour assurer une conversion en CO et H2. Pour la gazéification à haute température, on utilise la chaleur résiduelle d'un refroidisseur de clinker.

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