基于TDLAS技术的主流烟气 CO₂ 浓度监测方法研究

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文章编号：1674-6139（2026）04-0083-06

中图分类号：X831文献标志码：B

Mainstream Flue Gas CO2 Concentration Monitoring Method Based on TDLAS Technology

Pan Chao1，Dong Yuehong1，Han Shaopeng²，Ji Benhui²，Cheng Enlu² （1.StateKey Laboratoryof Cleanand Efficient Coal-fired Power GenerationandPollution Control， National Energy Group Science and Technology Research Institute Co.，Ltd.，Nanjing 210023，China; 2.Nanjing Guodian Environmental Protection Technology Co.，Ltd.，Nanjing 21oooo，China）

Abstract：In the process of monitoring CO2 concentration in mainstream flue gas，the high temperature and high pressure state will causeadecreaseintheperformanceofthelaseranddetectorndfecttheabsorptioncharacteristicsofgasolecules，esultinginan increase in measurement errors.Therefore，a mainstream flue gas CO2 concentration monitoring method based on TDLAS technology is proposed.BycombiningTDLAStechnoogyandWMStechnology，highprecisiongasconcentrationinformationcanbeobainedyutilizing changes in vibration energy levels.At the same time，a mainstream flue gas CO2 concentration monitoring system was designed based onTDLAStechnology，andpressrecompensationascariedoutonthemoitoringresultsofcarbondoxideconcentrationtoachieveo nitoring of mainstream flue gas CO2 concentration. The experimental results show that the proposed method can accurately monitor the concentration of carbon dioxide in mainstream flue gas，with a detection accuracy of 98% ．At the same time，the lower limit values for concentration measurement are all below 100ppm .Capable of high precision and sensitivity.

Key words：TDLAS technology；WMS technology；carbon dioxide；pressure compensation；concentration monitoring

前言

火电厂等化石燃料燃烧排放大量 CO2 ，加剧气候变暖，威胁生态与人类环境。（剩余4603字）