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. 30, 2019
Filed:
Jun. 18, 2008
Yupeng Wang, Shandong, CN;
Hong Tang, Shandong, CN;
Yuwang Miao, Shandong, CN;
Tao Niu, Shandong, CN;
Huaijun MA, Shandong, CN;
Peng Liu, Shandong, CN;
Xinguang Wang, Shandong, CN;
Xiaoyong Zhang, Shandong, CN;
Yubin Zhang, Shandong, CN;
Chaoqun Zhang, Shandong, CN;
Yongsheng Dong, Shandong, CN;
Xingyuan Cui, Shandong, CN;
Yupeng Wang, Shandong, CN;
Hong Tang, Shandong, CN;
Yuwang Miao, Shandong, CN;
Tao Niu, Shandong, CN;
Huaijun Ma, Shandong, CN;
Peng Liu, Shandong, CN;
Xinguang Wang, Shandong, CN;
Xiaoyong Zhang, Shandong, CN;
Yubin Zhang, Shandong, CN;
Chaoqun Zhang, Shandong, CN;
Yongsheng Dong, Shandong, CN;
Xingyuan Cui, Shandong, CN;
YANTAI LONGYUAN POWER TECHNOLOGY CO., LTD., Yantai, Shandong, CN;
Abstract
A method for decreasing nitrogen oxides of a pulverized coal boiler using burners of internal combustion type including during the operation of the boiler, ignition sources in the burners of internal combustion type mounted on side walls of the boiler are always in a working state, and igniting the pulverized coal in the burners in advance; decreasing secondary air amount in a primary combustion zone of the boiler so that the primary combustion zone is in a relatively strong reducing atmosphere and an oxygen-deficient condition for inhibiting generation of NOx is created; and supplying remaining air from an upper part of a furnace of the boiler in a form of over-fire air, so that a deep air staging is carried out in the total furnace. Thus, the NOx generation of combustion can be effectively controlled on the premise of not decreasing efficiency of the boiler.