METHOD FOR PRODUCING MOULDED COKE BY ELECTRIC HEATING IN A SHAFT FURNACE AND SHAFT FURNACE FOR PRODUCING SUCH COKE AND ELECTRIC HEATING METHOD BY MEANS OF A FLUID CONDUCTING GRANULATED BED

摘要

PCT No. PCT/FR86/00332 Sec. 371 Date Jun. 15, 1987 Sec. 102(e) Date Jun. 15, 1987 PCT Filed Sep. 26, 1986 PCT Pub. No. WO87/02049 PCT Pub. Date Apr. 9, 1987.An apparatus and process for producing coke in a vertical furnace having an upper part for preheating and devolitalizing raw ovoids of coal, an electrically heated median part for carbonizing and coking the ovoids and a lower part for partially cooling the coked ovoids by counter current flow of recycled product gases recovered from the upper part of the furnace. A cooling chamber is connected to the lower part of the furnace for further cooling the coked ovoids by countercurrent flow of a portion of the recycled product gases which are withdrawn after flowing through the partially cooled coked ovoids and introduced into the upper part of the furnace to prevent condensation of condensibles contained in the product gases. The median part of the furnace may be electrically heated by electrodes, induction coils or a combination of electrodes and induction coils.