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蔡春進 (Chuen-Jinn Tsai)
講座教授
國立交通大學，環境工程研究所 |
學歷
經歷
- Ph. D. University of Minnesota
- MS University of Minnesota
- BS National Taiwan University
經歷
- Chair Professor, Institute of Environ. Eng., NCTU
- Distinguished Professor, Institute of Environ. Eng., NCTU
- Coordinator, Environmental Engineering Program, National Sci. & Technol.
- Chairman, Institute of Environ. Eng., NCTU
- Fellow, International Association for Aerosol Research
- Fellow, Asian Association for Aerosol Research
講題: Control of PM2.5 and its Precursor Gases
演講摘要
Fine particles (PM2.5) can pose health risks and impair visibility (haze). To reduce PM2.5 levels to meet the national air quality standard has become one of the most important tasks of Taiwan EPA. The sources of PM2.5 are either primary (from nature, combustion processes or human activities) or secondary (formed in the atmosphere from other gaseous pollutants, such as acid/basic gases, nitrogen oxides and volatile organic compounds) with the latter being the most dominant. Increasing trend of O3 concentration due to photochemical reaction of precursor gases is another emerging issue which needs to be addressed soon. Therefore, to control both primary particles and precursor gases from pollution sources is important to ensure a good air quality. Besides ambient air quality studies, our research group has also been developing sampling, monitoring and control technologies for nanoparticles, PM2.5 and its precursor gases for over nearly 30 years, including single and two stage ESP, wet ESP, denuder, PPWD, SDEP etc. Some of the recent findings on air quality studies, and the testing results of monitoring and control devices will be presented in this workshop with the focus on an efficient honeycomb wet scrubber developed in our lab. The removal efficiency of the honeycomb wet scrubber has been evaluated for as long as 3 years since August 2016 in a semiconductor company. Results showed that the scrubber has a very low pressure drop in the range of 0.5–0.7 cm H2O without the maintenance need, and performs very well with more than 95 % efficiency for precursor acid gases, including HF, HCl, HNO3, H2SO4, and CH3COOH etc.
演講摘要
Fine particles (PM2.5) can pose health risks and impair visibility (haze). To reduce PM2.5 levels to meet the national air quality standard has become one of the most important tasks of Taiwan EPA. The sources of PM2.5 are either primary (from nature, combustion processes or human activities) or secondary (formed in the atmosphere from other gaseous pollutants, such as acid/basic gases, nitrogen oxides and volatile organic compounds) with the latter being the most dominant. Increasing trend of O3 concentration due to photochemical reaction of precursor gases is another emerging issue which needs to be addressed soon. Therefore, to control both primary particles and precursor gases from pollution sources is important to ensure a good air quality. Besides ambient air quality studies, our research group has also been developing sampling, monitoring and control technologies for nanoparticles, PM2.5 and its precursor gases for over nearly 30 years, including single and two stage ESP, wet ESP, denuder, PPWD, SDEP etc. Some of the recent findings on air quality studies, and the testing results of monitoring and control devices will be presented in this workshop with the focus on an efficient honeycomb wet scrubber developed in our lab. The removal efficiency of the honeycomb wet scrubber has been evaluated for as long as 3 years since August 2016 in a semiconductor company. Results showed that the scrubber has a very low pressure drop in the range of 0.5–0.7 cm H2O without the maintenance need, and performs very well with more than 95 % efficiency for precursor acid gases, including HF, HCl, HNO3, H2SO4, and CH3COOH etc.