基于TDLAS测量的痕量CO常温催化转化研究  

Research on catalytic conversion of trace CO at room temperature based on TDLAS measurement

作　　者：樊景星 贺拴玲 卢建彬 李天旺 韩世亮 李健韬 刘晓英 刘冠男 彭志敏[2] FAN Jing-xing;HE Shuan-ling;LU Jian-bin;LI Tian-wang;HAN Shi-liang;LI Jian-tao;LIU Xiao-ying;LIU Guan-nan;PENG Zhi-min(Inner Mongolia Jingneng Shengle Thermal Power Co.,Ltd.,Hohhot 011518,China;State Key Laboratory of Power System and Power Generation Equipment Control and Simulation,Department of Energy and Power Engineering,Tsinghua University,Beijing 100084,China)

机构地区：[1]内蒙古京能盛乐热电有限公司,内蒙古呼和浩特011518 [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：《激光与红外》2024年第6期908-914,共7页Laser & Infrared

基　　金：清华大学山西研究院种子基金项目(No.041509005);华能集团总部科技项目“基础能源科技研究专项(三)”项目(No.HNKJ22-H105)资助。

摘　　要：CO作为火电、冶金、化工等行业产生的重要中间产物或排放物质,具有易燃、剧毒等特性,对其进行高精度在线检测对提高锅炉燃烧安全及实现碳减排具有重要意义。因此,本文采用可调谐二极管激光吸收光谱(TDLAS)和赫里奥特(Herriott)多次反射池实现了浓度为10^(-6)(μL/L)量级的CO高精度在线测量,其检测限可达到0.35μL/L。在此基础上,利用该测量系统开展了CO催化转化性能研究实验,探究催化剂含量及CO浓度对催化反应的影响。实验结果揭示了在常温常压、CO浓度为10~80μL/L下,CO催化转化效率随催化剂含量的变化规律,即催化剂含量越高,CO转化效率越高。实验结果可为采用稀释取样法测量CO浓度时提供去除稀释气中CO的方法,保证痕量CO浓度的准确测量。CO as an important intermediate or emission substance generated in industries such as thermal power,metallurgy,and chemical engineering,has the characteristics of flammability and high toxicity.High precision online detection of CO is of great significance for improving boiler combustion safety and achieving carbon reduction.In this paper,tunable diode laser absorption spectroscopy(TDLAS)and Herriott multiple reflection cell are used to achieve high precision online measurement of CO concentration in the order of 10^(-6)(μL/L),with a detection limit of 0.35μL/L.In this basis,the measurement system is used to conduct experiments on the catalytic conversion performance of CO.And the effects of catalyst content and CO concentration on catalytic reactions are explored.The experimental results reveal the variation of CO catalytic conversion efficiency with catalyst content at room temperature and pressure,with a CO concentration of 10~80μL/L,the higher the catalyst content,the higher the CO conversion efficiency.The experimental results can provide a method for removing CO from the dilution gas when measuring CO concentration using dilution sampling method,which ensures the accurate measurement of trace CO concentration.

关 键 词：波长调制-直接吸收光谱(WM-DAS) 一氧化碳(CO) 在线测量 催化反应 

分 类 号：TH74[机械工程—光学工程] TN249[机械工程—仪器科学与技术]