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:
May. 23, 2006
Filed:
Jan. 20, 2004
Junichi Terasaki, Chiba, JP;
Yasuhiro Uchiyama, Chiba, JP;
Osamu Yamaguchi, Chiba, JP;
Harutoshi Kidachi, Chiba, JP;
Masafumi Nakazaki, Tokyo, JP;
Kouji Kondou, Tokyo, JP;
Junichi Terasaki, Chiba, JP;
Yasuhiro Uchiyama, Chiba, JP;
Osamu Yamaguchi, Chiba, JP;
Harutoshi Kidachi, Chiba, JP;
Masafumi Nakazaki, Tokyo, JP;
Kouji Kondou, Tokyo, JP;
Taiheiyo Cement Corporation, Tokyo, JP;
Abstract
An exhaust gas treatment method including: (A) a step of treating exhaust gas from cement manufacturing equipment by using a dust collectorto collect dust containing chlorinated organic compounds, and discharging the exhaust gas after the treatment by the dust collector, and (B) a step of charging all or part of the dust collected by the dust collectorinto a place (e.g. a rotary kiln, a pre-calciner, and a cyclone) having a temperature of at least 800° C. inside the cement manufacturing equipment. The remainder of the dust from step (B) maybe charged into a place (e.g. a raw material supply passage) having a temperature below 800° C. inside the cement manufacturing equipment, provided the amount of the remainder to be charged is smaller than a certain amount. Chlorinated organic compounds such as dioxins in the exhaust gas can be decomposed efficiently to be made harmless, merely by including simple and low-cost means (e.g. a dust feeding means, etc.).