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:
Mar. 23, 2010
Filed:
Nov. 01, 2005
Masayuki Taniguchi, Tokyo, JP;
Kenji Yamamoto, Tokyo, JP;
Hirofumi Okazaki, Tokyo, JP;
Kazumi Yasuda, Tokyo, JP;
Kenji Kiyama, Hiroshima, JP;
Takanori Yano, Hiroshima, JP;
Akira Baba, Hiroshima, JP;
Masayuki Taniguchi, Tokyo, JP;
Kenji Yamamoto, Tokyo, JP;
Hirofumi Okazaki, Tokyo, JP;
Kazumi Yasuda, Tokyo, JP;
Kenji Kiyama, Hiroshima, JP;
Takanori Yano, Hiroshima, JP;
Akira Baba, Hiroshima, JP;
Babcock-Hitachi K.K., Tokyo, JP;
Abstract
An after-air nozzle capable of reducing NOx and CO and a boiler equipped with such a nozzle are provided The after-air nozzle has a vena contracta such that an outside diameter of a flow passage diminishes towards the air-jetting port which supplies air to a boiler, and a changing apparatus changes a flow passage cross-sectional area of the vena contracta. A method of use of such an after-air nozzle and a boiler so equipped is also provided.