METHOD OF SUPPLYING NITROGEN GAS TO CHAIN CONVEYOR FOR CONVEYING PREHEATED COAL INTO COKE FURNACE

摘要

PURPOSE:The supply of preheated coal is stopped and while the preheated coal is charged in the coke firnace, the amount of nitrogen gas supplied in the device is increased to substitute the volume corresponding to that of the preheated coal charged in the coke furnace with the nitrogen gas, thus preventing the flowing backward of the generated gas from the furnace to free from the explosion. CONSTITUTION:In a coke furnace where a chain conveyor 2 is set above the coke oven 1 in the lengthwise direction of the furnace and preheated coal 5 in hopper 4 is changed from the conveyor 2 through buggy car 3 into the coke oven 1, during the period from the stop of revolution of rotary valve 7 for supplying preheated coal 5 to chain conveyor 2 to the charge of preheated coal remaining in the chain conveyor 5A into the carbonization chamber 6, the volume of nitrogen gas supplied from nozzle 8 is increased to substitute the volume corresponding to the preheated coal remaining in the chain conveyor 5A with nitrogen gas, thus preventing the pressure reduction in the chain conveyor 2 and the flow backward of the generated gas from the carbonization chamber 6.