A real-time monitoring system for soluble gas pollutants and it's application for determining the control efficiency of packed towers

Chih Liang Chien, Aditya Prana Iswara, Yi Ling Liou, Bing Tsai Wang, Jui Chiao Chang, Yi Hung Hung, Chuen-Tinn Tsai*

*Corresponding author for this work

研究成果: Article同行評審

1 引文 斯高帕斯(Scopus)

摘要

This study used a parallel-plate wet denuder coupled with an ion chromatograph (PPWD-IC) to monitor soluble gas pollutants in the exhaust stack and investigate the removal efficiency of packed towers. Gas pollutant concentrations measured by the PPWD-IC system were first validated with those obtained by a manual porous metal denuder sampler (PDS) as the reference sampler. The measured concentrations of the PPWD-IC system are in good agreement with those of the PDS with the coefficient of determination (R2) greater than 0.93. The PPWD-IC system was then used to determine the removal efficiency of packed towers in high-tech factories. Results show that the PPWD-IC system is able to monitor multiple high-concentration gas pollutants semi-continuously, such as HF, HCl, HNO2, HNO3, CH3COOH, and NH3, in the exhaust stack with a temporal resolution of 20 min. The PPWD-IC system was employed to test the gas removal efficiency of a new honeycomb wet scrubber in an optoelectronic factory. The removal efficiency of the wet scrubber equipped with the honeycomb module at the liquid-to-gas ratio of 18.5 L/m3 is shown to be close to 100% for HF (112.4-448.4 ppbv) and CH3COOH (696.3-6537.0 ppbv) and 99% for HCl (3394.9-10794.5 ppbv), respectively.

原文English
頁(從 - 到)137-148
頁數12
期刊Separation and Purification Technology
154
DOIs
出版狀態Published - 5 十一月 2015

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