基于吸收光谱测量的CO催化氧化特性研究  

Study on CO catalytic oxidation characteristics based on absorption spectroscopy measurement

作　　者：庄柯 贺拴玲 许芸 董月红 张乾 彭志敏[2] ZHUANG Ke;HE Shuanling;XU Yun;DONG Yuehong;ZHANG Qian;PENG Zhimin(National Key Laboratory of Low Carbon Intelligent Coal-fired Power Generation and Ultra Clean Emissions,National Energy Group Science and Technology Research Institute Co.,Ltd,Nanjing 210023,China;State Key Laboratory of Power Systems,Department of Energy and Power Engineering,Tsinghua University,Beijing 100084,China)

机构地区：[1]国家能源集团科学技术研究院有限公司低碳智能燃煤发电与超净排放全国重点实验室,南京210023 [2]清华大学能源与动力工程系电力系统及发电设备控制与仿真国家重点实验室,北京100084

出　　处：《激光杂志》2025年第3期84-90,共7页Laser Journal

基　　金：华能集团总部科技项目“基础能源科技研究专项(三)”(No.HNKJ22-H105)。

摘　　要：CO、CO_(2)作为燃烧过程中的重要产物,大量排放会造成碳减排压力增大,对其浓度进行高精度实时在线监测对提高锅炉燃烧效率及碳排放准确计量具有重要意义。基于波长调制-直接吸收光谱(WM-DAS)技术和赫里奥特(Herriott)多次反射池设计了可实现混合气体中含量为10^(-6)量级的CO、CO_(2)浓度准确在线测量实验系统,系统检测限可达到10^(-8)量级;然后基于该实验系统开展CO催化氧化特性研究实验,探究氧气含量和CO浓度对催化效率的影响,实验结果表明,在温度为339 K~344 K、压力为101 kPa条件下,氧气含量在1%~5%范围内,CO催化效率随氧气含量的增加而升高;当氧气含量为1%、CO体积分数为800×10^(-6)时,催化效率随反应温度升高而增加。实验结果可为工业烟气中CO的去除、转化提供数据基础。CO and CO_2,as important products in the combustion process,can increase the pressure of carbon reduction when they are emitted in large quantities.Therefore,high-precision real-time online monitoring of CO and CO_(2) concentrations is of great significance for improving boiler combustion efficiency and accurate measurement of carbon emissions.In this work,an online measurement experimental system based on wavelength modulation direct absorption spectroscopy(WM-DAS) technology and Herriott multiple reflection cell was designed.This experimental system can achieve accurate concentrations of CO and CO_(2) in mixed gases of the order of 10^(-6).And the system detection limit can reach the order of 10^(-8).Then,based on the experimental system,experiments were conducted to study the high-temperature catalytic oxidation characteristics of CO.The effects of oxygen content and CO concentration on catalytic efficiency were investigated.The experimental results showed that under the conditions of temperature ranging from 339 to 344 K and pressure of 101 kPa,the CO catalytic efficiency increased with the increase of oxygen content in the range of 1% to 5%.When the oxygen content was 1% and the CO volume fraction was 800×10^(-6),the catalytic efficiency increased with the increase of reaction temperature.The experimental results can provide a data basis for the removal and conversion of CO in industrial flue gas.

关 键 词：波长调制-直接吸收光谱 CO测量 CO_(2)测量 催化氧化 

分 类 号：TN911[电子电信—通信与信息系统]