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. 15, 2005
Filed:
Jan. 08, 2003
Susumu Kouno, Hiroshima-ken, JP;
Kenji Suzuki, Hiroshima-ken, JP;
Kazuko Takeshita, Hiroshima-ken, JP;
Kozo Iida, Hiroshima-ken, JP;
Toshiyuki Onishi, Nagasaki-ken, JP;
Akira Hattori, Nagasaki-ken, JP;
Susumu Kouno, Hiroshima-ken, JP;
Kenji Suzuki, Hiroshima-ken, JP;
Kazuko Takeshita, Hiroshima-ken, JP;
Kozo Iida, Hiroshima-ken, JP;
Toshiyuki Onishi, Nagasaki-ken, JP;
Akira Hattori, Nagasaki-ken, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
In the NHinjection rate control method for an NOremoval apparatus, operating area of the apparatus is divided into first area in which molar ratio of NHinjection rate with respect to NOflow rate at an inlet of the apparatus is smaller than molar ratio at minimum point where NOconcentration assumes minimum value and second area in which the molar ratio is equal to or larger than the minimum point molar ratio, and virtual NOconcentration with respect to the molar ratio is set according to virtual characteristic line which varies monotonically to stride across desired operating point without rising with increase of the molar ratio from the first area to the second area. Moreover, feedback control is implemented for adjusting the NHinjection rate with respect to the NOflow rate in direction that the virtual NOconcentration is brought close to the desired NOconcentration.