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:
Jul. 11, 1995
Filed:
Apr. 20, 1993
Sinji Tanaka, Ibaraki, JP;
Shuntaro Koyama, Katsuta, JP;
Kenichi Sohma, Ibaraki, JP;
Ryoichi Kaneko, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The invention is to continuously measure the contents of trace ingredients such as alkaline metal contained in combustion gas with high precision. An oxidizer and fuel are supplied into a flue line to form a flame, while a part of the combustion gas is introduced to the flame for inducing light emission. The contents of metal ingredients in the gas are calculated based on the intensity of the emitted light. Since a flame forming device is installed in the flue line without any additional equipment such as a sampling line, and such the contents of trace ingredients in the gas are calculated based on the intensity of the emitted light, the contents of the trace ingredients can be measured with high precision. Quickly responsive monitoring and control are assured.