Method for the operation of a carbonization plant

Method for the operation of a carbonization plant, in which coking furnaces are periodically charged with pre-heated coal, and the obtained coke is subjected to a dry cooling by means of a gaseous cooling medium, heat discharged from the dry cooling of the coke being used for the pre-heating of the coal, comprising pre-heating the coal by indirect heat exchange in a traveling bed drier without fluidization of said coal, resistance during flowing of said coal being overcome by the particular weight thereof, said traveling bed drier having a heat exchange tube and passing gas or waste-heat vapor from the dry cooling of the coke through said tube, said drier being arranged and constructed to permit the coal to flow therethrough via gravity, said drier comprising said heat exchange tubes and frame means;

• said heat exchange tube displaying surface-increasing means on its coal side, said tube being accomodated in said frame means, said frame means having a side displaying vapor or hot gas entry connected to said tube, a conical tapering in the direction of the coal feed, as well as a plurality of drain connections at different levels on a side lying opposite said side displaying vapor or hot gas entry, and discharging exhaust gas-containing vapors released from the coal during pre-heating through said drain connections.