THREE-DIMENSIONAL PATHS OF TRAVEL OF GASES PRODUCED IN A TEST COKE OVEN

Abstract

Publisher Summary In a coke oven chamber, the coking of coal charge is conducted batchwise. This chapter discusses a study in which a tracer technique using He and Ar was employed to investigate the paths of travel of gases produced in a test coke oven especially in the coal layer because the coal layer is thought to be mostly surrounded by the impermeable plastic zone. The variation in temperature distribution in the charge with elapse of time was monitored. The position of the plastic layer was predicted by assuming that it exists between the positions at 385°C of Soft T and 465°C of Solid T. A small amount of argon was detected from the center and helium was slightly found from the wall side as well, which suggests the small amount of cross flow through the plastic zone. In the middle of the stage, helium mostly flowed toward the door of coke side. After the plastic zone reached the center of the charge and disappeared, the maldistribution of tracer gases was hardly found, suggesting that the produced gas passed through the coke layer uniformly.