Treatment process and emission reduction effect of flue gas pollutants in flat glass industry
GU Zhen1,, ZHANG Zhigang1,2,,, WANG Bin2, WANG Dongge2, WANG Jun2 1.Institute of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China 2.CTIEC Environmental Protection Research Institute (Jiangsu) Co. Ltd., Yancheng 224051, China
Abstract:In order to effectively solve the problem that the flue gas emission from flat glass industry which will hamper the improvement of atmospheric environment quality in China, the concentrations of flue gas pollutants emitted from glass melting furnaces which fuelled with different fuels were determined and analyzed by constant potential electrolysis and ion chromatography. Furthermore, the X-ray fluorescence spectrometer (XRF) and laser particle size analyzer (LPSA) were used to characterize the characteristics of particulate matter, and the pollutants treatment technologies were studied in combination with engineering application. The results showed that NOx concentration in the flue gas from flat glass industry was generally higher than 2 000 mg·m?3, SO2 concentration in the flue gas fuelled with heavy oil and petroleum coke powder was significantly higher than that fueled with natural gas and coal gasification, and the fuel gas particles generally contained Na, K and other alkali metal elements that could easily lead to the poisoning of denitrification catalyst, and their particle size was mainly in 1~3 μm and 20~60 μm. The analysis showed that the fuel was an important factor that caused the different concentration of flue gas pollutants in flat glass industry. The treatment process should be selected according to the type of fuel. Through combination of reaseach and practical engineering cases, the treatment process which could meet the emission standard far lower than the current one was proposed for flue gas pollutants emitted from glass melting furnaces which fuelled with heavy oil. This study can provided technical reference for the deep emission reduction of flue gas in the flat glass industry. Key words:glass melting furnace/ flue gas characteristics/ particulate matter/ treatment process/ technical route.
图1烟气采样点示意图 Figure1.Schematic diagram of smoke sampling points
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1.Institute of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China 2.CTIEC Environmental Protection Research Institute (Jiangsu) Co. Ltd., Yancheng 224051, China Received Date: 2019-10-30 Accepted Date: 2019-12-02 Available Online: 2020-10-14 Keywords:glass melting furnace/ flue gas characteristics/ particulate matter/ treatment process/ technical route Abstract:In order to effectively solve the problem that the flue gas emission from flat glass industry which will hamper the improvement of atmospheric environment quality in China, the concentrations of flue gas pollutants emitted from glass melting furnaces which fuelled with different fuels were determined and analyzed by constant potential electrolysis and ion chromatography. Furthermore, the X-ray fluorescence spectrometer (XRF) and laser particle size analyzer (LPSA) were used to characterize the characteristics of particulate matter, and the pollutants treatment technologies were studied in combination with engineering application. The results showed that NOx concentration in the flue gas from flat glass industry was generally higher than 2 000 mg·m?3, SO2 concentration in the flue gas fuelled with heavy oil and petroleum coke powder was significantly higher than that fueled with natural gas and coal gasification, and the fuel gas particles generally contained Na, K and other alkali metal elements that could easily lead to the poisoning of denitrification catalyst, and their particle size was mainly in 1~3 μm and 20~60 μm. The analysis showed that the fuel was an important factor that caused the different concentration of flue gas pollutants in flat glass industry. The treatment process should be selected according to the type of fuel. Through combination of reaseach and practical engineering cases, the treatment process which could meet the emission standard far lower than the current one was proposed for flue gas pollutants emitted from glass melting furnaces which fuelled with heavy oil. This study can provided technical reference for the deep emission reduction of flue gas in the flat glass industry.