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基于傅里叶红外光谱法测定燃煤电厂烟气中SO3与H2SO4

Measurement of Sulfur Trioxide and Sulfuric Acid in Flue Gas from Coal Fired Power Plant Via Fourier Infrared Spectroscopy

DOI：

中文关键词: 三氧化硫烟气在线监测傅里叶红外光谱法燃煤电厂

英文关键词: Sulfur trioxide Flue gas On line monitoring Fourier infrared spectroscopy Coal fired power plant

基金项目:中央引导地方科技发展专项基金资助项目（2019L3020）；福建省市场监督管理局科技基金资助项目（FJMS2019019）

作者	单位
罗威威	福建省锅炉压力容器检验研究院
沈志刚	上海创蓝检测技术有限公司

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中文摘要:

基于傅里叶红外光谱法（FTIR）监测燃煤电厂烟气处理流程中的SO3与H2SO4。结果表明，布袋除尘进口、出口和烟囱出口的SO3与H2SO4之和（SO3+H2SO4）分别为（2933±230）mg/m3、（2515±163）mg/m3和（1213±126）mg/m3；〖JP〗布袋除尘与湿法脱硫对SO3+H2SO4的去除率分别为1411%与4838%；控制冷凝法（国标法）测得布袋除尘出口SO3+H2SO4为2341 mg/m3，与FTIR测定结果基本一致。

英文摘要:

Sulfur trioxide and sulfuric acid(SO3 and H2SO4) in flue gas from coal fired power plants were measured via Fourier infrared spectroscopy(FTIR). The results showed the sum of SO3 and H2SO4(SO3+H2SO4) in the inlet and outlet of bag filter, chimney outlet were（29.33±2.30）mg/m3、（25.15±1.63）mg/m3 and （12.13±1.26）mg/m3, respectively. The removal rates of SO3+H2SO4 by bag filter and by wet desulphurization were 14.11% and 48.38%，respectively. The concentration of SO3+H2SO4 at the outlet of bag filter was 23.41 mg/m3 by controlled condensation method, which was consistent with the result via FTIR.

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