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. 30, 2017
Filed:
May. 29, 2014
Babcock-hitachi Kabushiki Kaisha, Kanagawa, JP;
Hiroshi Yamakaji, Hiroshima, JP;
Ryosuke Nakagawa, Kanagawa, JP;
Satoru Shishido, Hiroshima, JP;
Toru Ogasahara, Hiroshima, JP;
BABOCK-HITACHI KABUSHIKI KAISHA, Kanagawa, JP;
Abstract
There is provided a denitrification apparatus capable of reducing NOx from a combustion facility and preventing evaporation of a reducing liquid in a lance and an injection nozzle in the combustion facility in operation at a low load by adjusting concentration of a reducing agent, thereby achieving complete evaporation of the reducing liquid in an exhaust gas duct. The denitrification apparatus of the present invention includes: a nozzle for spraying a reducing liquid containing a reducing agent for reducing nitrogen oxides in exhaust gas discharged from a combustion facility into the exhaust gas by using a flow of gas; a gas supply unit for supplying the gas to the nozzle; a reducing liquid supply unit for supplying the reducing liquid to the nozzle; and a concentration control unit for adjusting concentration of the reducing agent on the basis of a temperature of the exhaust gas and a supply amount of the reducing liquid by supplying a diluting liquid to the reducing liquid so that the reducing agent is not vaporized in the reducing liquid supply unit.