304 プラズマ・ケミカル複合技術を用いたガラス溶解炉向け湿式排ガス処理パイロットスケール実験(大気環境保全・改善技術(2))  [in Japanese] 304 Pilot-Scale Experiment of Wet-type Exhaust Gas Treatment for a Glass Melting Furnace Using a Plasma and Chemical Hybrid Process  [in Japanese]

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Abstract

The plasma and chemical hybrid process (PCHP) is an innovative technology for simultaneous removal of NO_x (NO and NO_2) and SO_x (SO_2 and SO_3). PCHP is demonstrated for an exhaust gas in glass melting furnaces. NO which compose 90% of the NO_x contained in the exhaust gas is oxidized effectively by injecting ozone with the cooling soft water and compressed air using the three-fluid spray nozzle. SO_2 is desulfurized to Na_2SO_3 at the wet-type reactor by absorbing solution of NaOH. Furthermore, oxidized NO_2 is removed to N_2 by Na_2SO_3. As a result, performance of pilot-scale test is maintained stable during 140 min. When the ozone of 1.4 kg/h is injected to exhaust gas which is 6,700 m^3N/h at 150℃, NO_x concentration is reduced to 222 ppm from 301 ppm in average with removal efficiency of 34% (NO is 38%) in maximum. Furthermore, SO_2 concentration decreased to more than 98%. The PCHP that can be applied effectively to wet-type exhaust gas treatment system of glass melting furnace is demonstrated.

Journal

  • The Proceedings of the Symposium on Environmental Engineering

    The Proceedings of the Symposium on Environmental Engineering 2014.24(0), 93-94, 2014

    The Japan Society of Mechanical Engineers

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