caa a22 4500 463171268 CHVBK 20180406164813.0 cr unu---uuuuu 170326e20070301xx s 000 0 eng 10.1007/s10163-006-0162-9 doi (NATIONALLICENCE)springer-10.1007/s10163-006-0162-9 Simple removal of dioxins by injecting combustion gas into water [Elektronische Daten] [Hirotoshi Kawabata, Bokka Yabunaka, Masayuki Tanabe, Tateo Usui, Katsukiyo Marukawa, Shigeta Hara, Toshihiro Tanaka] A simple, low-cost method for suppression of dioxins/furans (hereinafter referred to as dioxins) is required because many middle- and, especially, small-scale incinerators have fallen into disuse or have been dismantled because of the high running and system costs of measures for the suppression of dioxins. Therefore, the purpose of the present study was to develop a simple removal method for dioxins from combustion gas and to evaluate the basic removal rate of dioxins. The removal method for suspended matter in a gas mixture (cold model) and dioxins in exhaust gases (hot model) has been investigated by means of gas injection into water, the mechanism of which is that the suspended matter in the gas gathers at the gas-liquid interface. In the cold model, the removal ratio of fine particles (RP) by gas injection into water was reproduced well by the following equation: RP (%) = 100 × {1−exp(−0.8 · SS · tC)}, where SS (cm2/cm3) is the specific surface area of bubbles and tC (s) is the residence time of bubbles in water. The removal ratio of fine particles increased as the product Ss · tC increased. In a hot model using the exhaust gas from combustion experiments of polyvinyl chloride, the removal ratio of dioxins (RD) by injecting the exhaust gas into water was estimated by the following equation: RD (%) = 100 × {1−exp(−0.8 · SS · tC · CD0 0.07)}, where CD0 [ng/cm3 (at standard temperature and pressure)] is the dioxins concentration in the exhaust gas before injection into water. RD depends greatly on the specific surface area of bubbles and the residence time of the bubbles in water, and only weakly on the dioxins concentration in the exhaust gas. Injection of the exhaust gas into water has been shown to be effective and was evaluated as a simple method for the removal of dioxins from exhaust gas. Springer-Verlag Tokyo, 2007 Simple removal of dioxins nationallicence Exhaust gas nationallicence Gas injection into water nationallicence Incinerators nationallicence Predictive equation nationallicence Kawabata Hirotoshi Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, 565-0871, Osaka, Japan aut Yabunaka Bokka Nisso-Service, Co., Ltd., Kariya, Japan aut Tanabe Masayuki Hitachi, Ltd., Odawara, Japan aut Usui Tateo Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, 565-0871, Osaka, Japan aut Marukawa Katsukiyo Center for Advanced Science and Innovation, Osaka University, Osaka, Japan aut Hara Shigeta Fukui University of Technology, Fukui, Japan aut Tanaka Toshihiro Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, 565-0871, Osaka, Japan aut Journal of Material Cycles and Waste Management Springer-Verlag 9/1(2007-03-01), 80-89 1438-4957 9:1<80 2007 9 10163 https://doi.org/10.1007/s10163-006-0162-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10163-006-0162-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kawabata Hirotoshi Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, 565-0871, Osaka, Japan aut NATIONALLICENCE 700 1- Yabunaka Bokka Nisso-Service, Co., Ltd., Kariya, Japan aut NATIONALLICENCE 700 1- Tanabe Masayuki Hitachi, Ltd., Odawara, Japan aut NATIONALLICENCE 700 1- Usui Tateo Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, 565-0871, Osaka, Japan aut NATIONALLICENCE 700 1- Marukawa Katsukiyo Center for Advanced Science and Innovation, Osaka University, Osaka, Japan aut NATIONALLICENCE 700 1- Hara Shigeta Fukui University of Technology, Fukui, Japan aut NATIONALLICENCE 700 1- Tanaka Toshihiro Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, 565-0871, Osaka, Japan aut NATIONALLICENCE 773 0- Journal of Material Cycles and Waste Management Springer-Verlag 9/1(2007-03-01), 80-89 1438-4957 9:1<80 2007 9 10163 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer