| 摘要 |
PURPOSE:To efficiently obtain the coke having high desulfurizing and denitrating performance y precarbonizing pulverized coal under specified conditions to obtain semicoke, mixing caking coal, a binder, etc., into the semicoke, forming, carbonizing and activating the semicoke. CONSTITUTION:The coal pulverized to 1-1000mum size is introduced into a tubular or cylindrical carbonization furnace kept at 200-100 deg.C. The coal is entrained by a hot gas current contg. 1-21%, preferably 5-15%, oxygen and kept at 200-1000 deg.C or preferably to 400-850 deg.C, passed through the furnace and precarbonized to produce semicoke. Caking coal and a binder e.g. coal tar pitch) are added as the auxiliary material to the main material consisting of the semicoke, and a forming assistant (e.g. surfactant) is added, as required, to adjust the caking property. The materials obtained are formed, the formed coal is carbonized to obtain the formed coke which is activated to obtain the formed and activated coke. |
