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.

Date of Patent:
Apr. 25, 2006

Filed:

Oct. 15, 2003
Applicants:

Shuichi Kanno, Hitachi, JP;

Shin Tamata, Higashiibaraki-gun, JP;

Kazuyoshi Irie, Hitachi, JP;

Kenji Yamamoto, Hitachinaka, JP;

Masayuki Taniguchi, Hitachinaka, JP;

Osamu Ito, Hitachiohta, JP;

Hironobu Kobayashi, Hitachi, JP;

Inventors:

Shuichi Kanno, Hitachi, JP;

Shin Tamata, Higashiibaraki-gun, JP;

Kazuyoshi Irie, Hitachi, JP;

Kenji Yamamoto, Hitachinaka, JP;

Masayuki Taniguchi, Hitachinaka, JP;

Osamu Ito, Hitachiohta, JP;

Hironobu Kobayashi, Hitachi, JP;

Assignee:

Hitachi, Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 50/34 (2006.01); A62D 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

The catalytic exhaust gas decomposition apparatus spirals an exhaust gas containing therein a substance to be decomposed and a reactant gas, rectifies the spiral flow, and lets the substance to be decomposed contained in the exhaust gas react with the reactant gas after the spiral flow has been rectified. This arrangement rectifies the spiral flow of the exhaust gas and the reactant gas with a plate-like baffle wall having therein a through hole at a portion near the center thereof. The spiral flow is allowed to pass through the through hole so as to be centralized temporarily. The spiral flow then passes through an enlarged section of a flow path downstream of the through hole before being introduced into the catalyst bed.


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