METHOD FOR UTILIZING EXHAUST GAS IN COKE DRY-QUENCHING EQUIPMENT

摘要

PURPOSE: To effectively utilize a circulating gas contg. a remaining combustible gas derived from coke before the circulating gas is discharged as an exhaust gas, when a semicoke is baked in a prechamber by supplying the circulating gas to a fuel pipeline while the gas has a high calory. ;CONSTITUTION: A semicoke is used which is pushed out of a coke oven chamber of a chamber oven at such a low temp. that the temp. of coke at the center of the chamber is 600-900°C. Coke is produced by charging the semicoke into the prechamber of coke dry-quenching equipment and introducing a specified amt. of air into the prechamber to burn a combustible gas remaining in the semicoke to thereby bake it. During the baking the concn. of an unburnt combustible gas contained in a circulating gas in a pipeline is measured on-line, the curculating gas is effectively utilized before it is discharged out of the system as an exhaust by supplying the gas, while it has a high calory, to a fuel pipeline such as a blast furnace gas pipeline. The water content of the gas is measured on-line to calculated the temp. of water supplied to bring the gas to the dew point or higher, and the gas of a high calory is supplied to an incinerator as a fuel for preheating the water supplied.;COPYRIGHT: (C)1995,JPO