Pressure Analysis of the Initial Process of Diffusion Combustion Surge in a 350 kW Gas Boiler

作     者：GAO Han ZHU Tong PAN Deng GAO Han;ZHU Tong;PAN Deng

作者机构：School of Mechanical EngineeringTongji UniversityShanghai 201804China 

出 版 物：《Journal of Thermal Science》 (热科学学报（英文版）)

年 卷 期：2022年第31卷第2期

页      面：582-589页

核心收录：

学科分类：080703[工学-动力机械及工程] 08[工学] 0807[工学-动力工程及工程热物理] 

基　　金：supported by the National Natural Science Foundation of China(51976140) the National Key Research and Development Program of China(2017YFF0209801) 

主　　题：diffusion combustion flue gas recirculation wavelet packet entropy surge gas boiler 

摘      要：In order to meet the increasingly stringent requirements for nitrogen oxides(NOx)emissions from gas boilers,flue gas recirculation(FGR)technology is commonly used to achieve ultra-low NOx ***,under some ultra-low NOx combustion conditions with FGR,a surge phenomenon occurs in the boiler,which causes a flameout and should be *** this study,the diffusion combustion surge of gas boiler with a rated power of 350 k W and equipped with FGR device was *** characteristic analysis results of the initial process of combustion surge showed that the high-frequency component of pressure is closely related to combustion stability and its change can provide reference for the occurrence of ***,the initial process of surge was analyzed by wavelet packet entropy *** indicated that the wavelet packet entropy of pressure signals could effectively reflect the stability of combustion in the furnace,and it could also be used to study the occurrence of surge.