METHOD FOR PRETREATING CHARGES CONTAMINATED WITH CARBON CARRIERS

摘要

Disclosed herein is a method for pretreating charges of alternative fuels contaminated with carbon carriers for use in clinker kilns, wherein said charges of alternative fuels are introduced into a reactor and heated or dried with gases, wherein the heated gases are drawn off at temperatures below 1250°C, preferably 700-900°C, and the heated or dried charge of alternative fuels is separately discharged at temperatures between 500°C and 1000°C, wherein the temperatures are set and maintained to stabilize the temperature distribution within the reactor by monitoring the temperature in the interior of the reactor by the aid of a temperature sensor and by controlling the feed rate of the charge of alternative fuels and the feed rate of process gases as a function of the signals of the temperature sensor, and wherein the gases drawn off from the reactor are at least partially recirculated into the reactor and/or supplied to a precalcining stage and/or a preheating stage of the clinker kiln.