A method for the production of activated coke for processes for the simultaneous phurisation and denitrating

摘要

PCT No. PCT/JP94/01943 Sec. 371 Date Jul. 6, 1995 Sec. 102(e) Date Jul. 6, 1995 PCT Filed Nov. 18, 1994 PCT Pub. No. WO95/13868 PCT Pub. Date May 26, 1995Disclosed is a process for the production of high-strength activated coke for desulfurization and denitrification. The process comprises forming a mixture of plural coals of different caking properties and a binder, said mixture containing said coal of higher caking property in an amount of 10-50 wt. %, subjecting the thus-formed mixture to oxidization treatment in an atmosphere having an oxygen concentration of 1-18 vol. % and a temperature of 50 DEG -250 DEG C., subjecting the thus-treated mixture to carbonization treatment under conditions of an oxygen concentration not higher than 8 vol. %, a heating efficiency of 10 DEG -50 DEG C./min and a final temperature 600 DEG -900 DEG C., and then subjecting again the thus-carbonized mixture to oxidation treatment at an oxygen concentration of 3-18 vol. % and a temperature of 200 DEG -600 DEG C. By treating the resultant high-strength activated coke for desulfurization and denitrification further with concentrated sulfuric acid, a coke which is inherently equipped with high denitrification activity can be obtained.