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基于TDLAS技术测量高温环境中CO2的温度和浓度

Measurements of CO2 Temperature and Concentration in High Temperature Environment Based on Tunable Diode Laser Absorption Spectroscopy

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摘要

基于可调谐半导体激光吸收光谱(TDLAS)技术,研究了高温环境中CO2温度和浓度的测量方法。选取位于4996 cm-1附近的CO2吸收谱线作为高温环境中对CO2温度和浓度进行测量的目标谱线对。对气体吸收池内不同温度(873~1273 K)、不同CO2体积分数(4%~10%)的CO2/N2混合气体的温度以及CO2的浓度进行了在线测量。结果表明:测量温度与设定温度的平均偏差为2.07%,峰值偏差为3.49%;测量得到的CO2浓度与配比浓度的平均偏差为2.25%,峰值偏差为4.75%。该测量方法精确可靠,为高温环境中CO2的测量提供了一种新的技术手段。

Abstract

Based on tunable diode laser absorption spectroscopy technique, the measurement method of CO2 temperature and concentration in high temperature environment is studied. The CO2 absorption line near 4996 cm-1 is selected as the target detection line to measure CO2 temperature and concentration in high temperature environment. The CO2 concentration and temperature of CO2/N2 mixed gas in the gas absorption cell at different temperatures (873-1273 K) and different CO2 volume fraction (4%-10%) are measured. The results show that, compared with the setting values, the average deviation and peak deviation of the measured temperature are 2.07% and 3.49%, respectively. The average deviation and peak deviation of the measured concentration are 2.25% and 4.75%, respectively. The results indicate that the proposed method is accurate, and it provides references for CO2 detection in the high temperature environment.

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中图分类号:O433.1

DOI:10.3788/lop55.053003

所属栏目:光谱学

基金项目:浙江省科技计划项目(2016C33005)

收稿日期:2017-10-13

修改稿日期:2017-11-24

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崔海滨:浙江大学能源工程学院能源清洁利用国家重点实验室, 浙江 杭州 310027
王飞:浙江大学能源工程学院能源清洁利用国家重点实验室, 浙江 杭州 310027
李玫仪:浙江大学能源工程学院能源清洁利用国家重点实验室, 浙江 杭州 310027

联系人作者:崔海滨(cuihaibin1991@zju.edu.cn)

备注:崔海滨(1991—),男,博士研究生,主要从事气体监测与光谱测量方面的研究。E-mail: cuihaibin1991@zju.edu.cn

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引用该论文

Cui Haibin,Wang Fei,Li Meiyi. Measurements of CO2 Temperature and Concentration in High Temperature Environment Based on Tunable Diode Laser Absorption Spectroscopy[J]. Laser & Optoelectronics Progress, 2018, 55(5): 053003

崔海滨,王飞,李玫仪. 基于TDLAS技术测量高温环境中CO2的温度和浓度[J]. 激光与光电子学进展, 2018, 55(5): 053003

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