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:
Dec. 20, 2005
Filed:
Jan. 19, 2000
Kiyoshi Iwanaga, Chiba, JP;
Tetsuya Suzuta, Ichihara, JP;
Yasuhiko Mori, Niihama, JP;
Masayuki Yoshii, Ichihara, JP;
Kiyoshi Iwanaga, Chiba, JP;
Tetsuya Suzuta, Ichihara, JP;
Yasuhiko Mori, Niihama, JP;
Masayuki Yoshii, Ichihara, JP;
Sumitomo Chemical Company, Limited, Osaka, JP;
Abstract
A process for producing chlorine comprising the step of oxidizing hydrogen chloride in a gas containing hydrogen chloride with a gas containing oxygen in the presence of a catalyst, wherein the oxidation of hydrogen chloride is carried out in at least two reaction zones each comprising a catalyst-packed layer, which are arranged in series, and a temperature in at least one of said reaction zones is controlled with a heat exchange system. According to this process, the stable activity of the catalyst is maintained and chlorine can be stably obtained at a high yield since the excessive hot spot in the catalyst-packed layer is suppressed and the catalyst-packed layer can be effectively used.