燃煤锅炉烟气消白技术的应用现状及研究进展
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摘要
介绍了目前烟气消白的相关地方标准,综述了目前烟气消白技术的应用现状及研究进展,分析了各种技术的优缺点。结果表明:直接加热法、间接加热法只消除了视觉影响,并未降低烟气含湿量;降温冷凝法对冷源要求高;冷凝再热法可彻底实现烟气消白,但设备相对复杂;溶液吸收法成本高、腐蚀性强;旋流除湿法、除雾器改造、安装湿式电除尘器等没有去除水蒸气的效果,消白能力有限。综合各种因素,得出冷凝再热法是目前较为可行的烟气消白方案。
The relevant local standards of white smoke elimination were introduced,the application status and research progress on the white smoke elimination technologies were summarized,and the advantages and disadvantages of various technologies were analyzed.The results showed that the direct heating method and indirect heating method could only eliminate the visual influence and could not actually reduce moisture content of the flue gas.Cooling and condensation method required high quality cold source.Condensation and reheating method could completely achieve the white smoke elimination,but the equipment was relatively complex.Also,solution absorption method had a high cost and strong corrosiveness.Swirl dehumidification method,demister modification,and wet electrostatic precipitator had no effect of removing water vapor,with limited white smoke elimination ability.Considering various factors comprehensively,it was thought that the condensation and reheating method was the most feasible solution at present.
The relevant local standards of white smoke elimination were introduced,the application status and research progress on the white smoke elimination technologies were summarized,and the advantages and disadvantages of various technologies were analyzed.The results showed that the direct heating method and indirect heating method could only eliminate the visual influence and could not actually reduce moisture content of the flue gas.Cooling and condensation method required high quality cold source.Condensation and reheating method could completely achieve the white smoke elimination,but the equipment was relatively complex.Also,solution absorption method had a high cost and strong corrosiveness.Swirl dehumidification method,demister modification,and wet electrostatic precipitator had no effect of removing water vapor,with limited white smoke elimination ability.Considering various factors comprehensively,it was thought that the condensation and reheating method was the most feasible solution at present.
引文
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[2]周勇.雾霾暴发主因:湿法脱硫--基于大数据、气象数据和实验数据的确认[J].科学与管理,2017,37(4):15-21.ZHOU Y.The Main Cause of Smog Outbreak:Wet Flue-gas Desulfurization Based on the Big Data,Meteorological Data and Experimental Data[J].Science and Management,2017,37(4):15-21.
[3]胡鑫,潘响明,李啸,等.湿法脱硫烟气“消白”工艺探索[J].化肥设计,2018,56(2):28-31,37.HU X,PAN X M,LI X,et al.Exploration on the Process of White Smoke Elimination in Wet Flue Gas Desulfurization[J].Chemical Fertilizer Design,2018,56(2):28-31,37.
[4]孙栓柱,梁绍华,孙虹,等.1 000 MW机组抽热风加热脱硫出口净烟气的经济性研究[J].电站系统工程,2016,32(2):31-33,36.SUN S Z,LIANG S H,SUN H,et al.Economy Study on Hot Air Heating Desulfurization Outlet Flue Gas in1 000 MW Unit[J].Power System Engineering,2016,32(2):31-33,36.
[5]吴春华,颜俭,柏源,等.无GGH湿法烟气脱硫系统烟囱石膏雨的影响因素及策略研究[J].电力科技与环保,2013,29(3):15-17.WU C H,YAN J,BAI Y,et al.Influence Factors and Strategy Research on Gypsum Rain of Wet FGD System Without GGH[J].Electric Power Technology and Environmental Protection,2013,29(3):15-17.
[6]殷文香,朱天涛.燃煤电厂湿法烟气脱硫系统是否设置GGH的探讨分析[J].内蒙古环境科学,2007,19(4):57-62.YIN W X,ZHU T T.Analysis of GGH Installation of Wet Flue Gas Desulfurization System of Coal Burning Power Plant[J].Inner Mongolian Environmental Sciences,2007,19(4):57-62.
[7]刘尚前.MGGH技术在600 MW机组中应用的技术、经济性分析[J].电子测试,2015(24):78-80.LIU S Q.Technical and Economic Analysis of MGGHTechnology Application in 600 MW Units[J].Electronic Test,2015(24):78-80.
[8]谭厚章,毛双华,刘亮亮,等.新型湿式相变凝聚除尘、节水及烟气余热回收一体化系统性能研究[J].热力发电,2018,47(6):16-22.TAN H Z,MAO S H,LIU L L,et al.Performance Research on the New Integrated System of Wet Phase Transition Agglomeration Dust Collector,Water Saving and Flue Gas Waste Heat Recovery[J].Thermal Power Generation,2018,47(6):16-22.
[9]刘晨.烟气消白助力钢铁、焦化环保达标、绿色转型发展[N].世界金属导报,2018-01-09(B12).
[10]舒喜,杨爱勇,叶毅科,等.冷凝再热复合技术应用于燃煤电厂湿烟羽治理的可行性分析[J].环境工程,2017,35(12):82-85,91.SHU X,YANG A Y,YE Y K,et al.Feasibility Analysis of the Condensation and Reheating Composite Technology Applied to the Wet Plume Control in Coal Fired Power Plant[J].Environmental Engineering,2017,35(12):82-85,91.
[11]吕扬,董勇,田路泞,等.燃煤电厂湿烟气的除湿特性[J].化工学报,2017,68(9):3 558-3 564.LV Y,DONG Y,TIAN L N,et al.Dehumidification Performance of Wet Flue Gas in Coal-fired Power Plant[J].CIESC Journal,2017,68(9):3 558-3 564.
[12]吕扬.低温湿烟气溶液除湿技术试验研究[D].济南:山东大学,2017:8-11.
[13]戴丽萍,周强,姚世刚,等.旋流板对烟囱流场及除湿特性影响的数值研究[J].动力工程学报,2016,36(10):842-848.DAI L P,ZHOU Q,YAO S G,et al.Effect of Swirl Vane on Flow Field and Dehumidification Characteristics of a Chimney[J].Journal of Chinese Society of Power Engineering,2016,36(10):842-848.
[14]程峰,高翔,刘国瑞,等.简易湿法脱硫除尘一体化装置烟气除湿性能的试验研究与改进[J].热力发电,2004(3):40-43,72.CHENG F,GAO X,LIU G R,et al.Experimental Study on Flue Gas Dehudifying Performance of a Simple Integrated Wet Dedusting and Desulfurition Fa cility[J].Thermal Power Generation,2004(3):40-43,72.
[15]陈凌云.烟气脱硫系统中石膏雨的综合治理方法[J].中国新技术新产品,2012(15):198.CHEN L Y.Comprehensive Treatment Method of Gypsum Rain in Flue Gas Desulfurization System[J].China New Technologies and Products,2012(15):198.