The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 15, 2002
Filed:
Dec. 20, 1999
Toshio Morita, Kanagawa, JP;
Yutaka Suhara, Kanagawa, JP;
Yoshihisa Sakamoto, Kanagawa, JP;
Nobuhiro Matsumoto, Kanagawa, JP;
Kunio Nishimura, Kanagawa, JP;
Showa Denko K.K., Tokyo, JP;
Abstract
A method for producing carbon fiber including the following processes: a process for obtaining fine carbon fiber by thermally decomposing an organic compound in a furnace by use of a catalyst; a process for separating a reaction exhaust gas contained in the carbon fiber; a process for continuously subjecting the carbon fiber to thermal treatment in a non-oxidative atmosphere; and a process for incinerating a thermal treatment exhaust gas generated in the thermal treatment and/or the reaction exhaust gas. The method for separating a reaction exhaust gas from carbon fiber is characterized in that a packed carbon fiber layer is formed, an inert gas is caused to flow through the layer, and the layer is compressed. Combustion of the reaction exhaust gas and combustion of the exhaust gas generated from the subsequent thermal treatment is achieved through employment of a pilot burner holding flame at all times in a vertical incinerator.