基于可调谐二极管激光吸收光谱技术的炉内燃烧场参数在线监测系统设计  

Design of an Online Monitoring System for Combustion Field Parameter in a Furnace Based on Tunable Diode Laser Absorption Spectroscopy Technology

作　　者：李源 郭志成 孟晓超 陈科峰 任利明 毛睿 岑可法[2] LI Yuan;GUO Zhicheng;MENG Xiaochao;CHEN Kefeng;REN Liming;MAO Rui;CEN Kefa(Rundian Energy Science and Technology Co.,Ltd.,Zhengzhou 450052,Henan Province,China;State Key Laboratory of Clean Energy Utilization(Zhejiang University),Hangzhou 310027,Zhejiang Province,China)

机构地区：[1]润电能源科学技术有限公司,河南省郑州市450052 [2]能源清洁利用国家重点实验室(浙江大学),浙江省杭州市310027

出　　处：《发电技术》2022年第2期353-361,共9页Power Generation Technology

基　　金：国家重点基础研究发展计划项目(2015CB251501)。

摘　　要：基于可调谐二极管激光吸收光谱(tunable diode laser absorption spectroscopy,TDLAS)技术,设计了炉内多燃烧场参数(温度,CO、CO;和NO浓度等)同时在线监测技术方案,包括一维燃烧参数监测系统和多维燃烧参数监测系统。在一维燃烧参数监测系统中,引入光开关技术实现多个燃烧参数的同时测量。在二维燃烧参数监测系统中,引入分光器技术和代数迭代算法(algebraic reconstruction technique,ART)实现平面内二维燃烧参数的反演和测量。在此基础上,设计了三维燃烧参数监测系统,三维燃烧参数测量步骤为:先将炉内燃烧区域划分为多层二维切片;再基于ART法重建二维燃烧参数;最后基于多层二维燃烧参数数据重构三维燃烧参数。本文所设计的炉内燃烧场参数监测系统有利于未来锅炉精细化调整。Based on the tunable diode laser absorption spectroscopy(TDLAS) technology, one-dimensional and multi-dimensional combustion parameter monitoring systems were designed to simultaneously monitor multiple combustion field parameters in the furnace(such as temperature, CO,CO;, and NO concentration, etc.). In the one-dimensional system, the optical switch technology was applied to measure the multiple combustion parameters simultaneously. In the two-dimensional system, the spectrometer technology and algebraic reconstruction technique(ART) were introduced to inversion calculate and measure the two-dimensional combustion parameters in a layer. On this basis, the threedimensional system was designed. The measurement procedures of three-dimensional combustion parameters were as follows: the combustion region in the furnace was divided into multilayer sections;the two-dimensional combustion parameters were reconstructed based on ART;the threedimensional combustion parameters were reconstructed using the multilayer combustion parameter data. The combustion filed parameter monitoring system contributes to the fine combustion adjustment in the future.

关 键 词：燃煤锅炉 可调谐二极管激光吸收光谱(TDLAS) 污染物浓度 在线监测系统 

分 类 号：TK16[动力工程及工程热物理—热能工程] TK227.1