Patent ID: 6602486
Filing Date: 2003-08-05
Classification: B01D,B82Y,D01F

Abstract:
A method for producing carbon fiber comprising a first step of thermally decomposing an organic compound in a thermal-decomposition furnace at 800-1,300Â° C. in an atmosphere containing a reducing gas, by use of a transition metal or a compound thereof serving as a catalyst, to thereby obtain carbon fiber, a second step of separating a reaction exhaust gas produced during the first step, wherein the second step includes forming a packed layer of carbon fiber at an outlet side of the thermal-decomposition furnace, causing an inert gas to flow upward from a lower side of the packed layer, and compressing the packed layer, and a third step in which the carbon fiber is subjected to a thermal treatment of firing or graphitization in a non-oxidative atmosphere.