| 摘要 |
PROBLEM TO BE SOLVED: To operate a coke furnace without having a push-out failure and a damage on the furnace with a long furnace life by pushing-out and discharging coke cakes which are produced through dry distillation of raw coal to carbonize after the raw coal is charged into a carbonization chamber, from the chamber with a pushing ram using a furnace-wall loading index as a parameter. SOLUTION: A raw coal (A) consisting of a single coal or a compound coal prepared by compounding two kinds or more of coal is charged into a carbonization chamber, and it is carbonized by dry distillation. The obtained coke cakes (B) are pushed out from the carbonization chamber with a pushing ram and discharged. In the discharging process, a furnace-wall loading index (β) consisting of a ratio of a furnace-wall loading to the constant pushing power during the compression of B is determined from the physical properties of A [e.g. a caking property such as the maximum fluidity(MF) and a degree of coalification such as an average vitrinite reflectance (RO)] and operating conditions. The operation of a coke furnace is carried out usingβas a parameter, e.g. under securing the pushing out property of B by controllingβ6t -value of the equation (β6t isβat 6t of the pressing power).
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