| Summary: | 碩士 === 國立交通大學 === 工學院碩士在職專班產業安全與防災組 === 99 === ABSTRACT
Currently, the increase of photovoltaic cell manufacturers threatens the environment in Taiwan with NO2 pollution. This paper presents an experimental study of the absorption of NO2 in a wet scrubber with a Na2SO3 aqueous solution. Experiments have been conducted to determine the effects of various operating parameters such as inlet concentration of the Na2SO¬3 solution, liquid-to-gas ratio, NO2 removal efficiencies, and Ph value. The experimental device used in this study was a rectangular scrubber 2.84 m in height with a constant 100 m3/hr gas rate of NO2 input. The experimental results showed that the removal effectiveness of NO2 increased while increasing the concentration of the Na2SO¬3 solution, contact time, and the L/G ratio. In addition, when the L/G ratio was equal to 5, with 0.3 mole of Na2SO¬3 solution and a contact time of 3 seconds of L/G, the removal efficiencies are higher than 95 %.
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