燃煤烟气余热和水分综合利用技术研究
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摘要
考虑到低温腐蚀问题,燃煤电站锅炉机组排烟温度一般在120～140℃,部分锅炉的排烟热损失达10%～20%,烟气中水蒸气占到烟气量的12%～16%。回收烟气中的水分能有效地消除"白色烟羽"现象。介绍了冷凝换热器法、膜凝汽器法和溶液吸收法3种烟气余热和水分综合回收技术,并进行了比较分析,指出了技术发展的趋势,以期为燃煤电站的节能环保提供参考。
Considering the problem of lowtemperature corrosion,the exhaust temperature of coal-fired power station boiler units is generally between 120 ℃ and 140 ℃,and the heat loss of exhaust gas is in the range of 10% ～ 20%,and the water vapor in the flue gas accounts for 12% ～16% of the flue gas volume,and the moisture in the flue gas can effectively eliminate the "white plume"phenomenon. Three kinds of flue gas waste heat and water comprehensive recovery technology of condensing,namely heat exchanger method are introduced,membrane condenser method and solution absorption method are introduced,and comparative analysis is conducted. The trend of technology development is pointed out,which provides reference for energy saving and environmental protection for coal-fired power stations.
Considering the problem of lowtemperature corrosion,the exhaust temperature of coal-fired power station boiler units is generally between 120 ℃ and 140 ℃,and the heat loss of exhaust gas is in the range of 10% ～ 20%,and the water vapor in the flue gas accounts for 12% ～16% of the flue gas volume,and the moisture in the flue gas can effectively eliminate the "white plume"phenomenon. Three kinds of flue gas waste heat and water comprehensive recovery technology of condensing,namely heat exchanger method are introduced,membrane condenser method and solution absorption method are introduced,and comparative analysis is conducted. The trend of technology development is pointed out,which provides reference for energy saving and environmental protection for coal-fired power stations.
引文
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[19]陈林,孙颖颖,梁江涛,等.用于烟气余热回收的塑料翅片管换热器的设计及分析[J].化工学报,2014,65(增刊1):175-179.
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[22]宋倩,刘春花,王爽,等.硫藏双华李柠檬酸烫漂脱硫工艺参数及其对品质的影响研究[J].食品工业科技,2016,37(19):107-110.
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[24]熊英莹,谭厚章,许伟刚,等.火电厂烟气潜热和凝结水回收的试验研究[J].热力发电,2015(6):77-81.
[25]周洪光,李延兵.火电厂湿法脱硫石膏雨和白雾治理措施及效果分析[J].电力科技与环保,2014,30(6):34-37.
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[27]雷鑫,耿爱民,孔祥渠.燃气锅炉烟气冷凝水回收利用分析[J].中国高新技术企业,2016(21):87-88.
[28]CONDE MR.Properties of aqueous solutions of lithium and calcium chlorides:formulations for use in air conditioning equipment design[J].International Journal of Thermal Sciences,2004,43(4):367-382.
[29]田路泞,韩哲楠,董勇,等.燃煤电厂湿烟气余热及水分回收技术研究[J].洁净煤技术,2017,23(5):105-110.
[30]汪洋,沈煜晖,陶爱平,等.烟气膜法水分捕集技术的研究进展[J].电力科技与环保,2013,29(3):13-14.
[31]韦存忠,沈隼睿.膜法海水淡化技术在玉环电厂的应用[J].电力科技与环保,2010,26(5):48-49.
[32]陈海平,刘彦达,周亚男.中空纤维膜法回收火电厂烟气中水蒸气[J].热力发电,2017,46(1):100-105.
[33]MOHR M,YlTALO S,KLIPPEL N,et al.Submicron fly ash penetration through electrostatic precipitators at two coal power plants[J].Aerosol Science&Technology,1996,24(3):191-204.
[34]高金强,隋国哲,李金龙.膜法气体除湿的研究进展[J].化工时刊,2014,28(3):39-43.
[35]CONDE MR.Properties of aqueous solutions of lithium and calcium chlorides:formulations for use in air conditioning equipment design[J].International Journal of Thermal Sciences,2004,43(4):367-382.
[36]刘晓华,李震,张涛.溶液除湿[M].北京:中国建筑工业出版社,2014.
[37]梁珍,沈恒根,郭建,等.火电厂冷凝热回收利用的技术经济分析[J].东华大学学报(自然科学版),2009,35(5):580-584.
[38]朱进林,谢晶,王金峰,等.蒸发式冷凝器喷嘴喷淋性能的数值模拟及试验[J].农业工程学报,2014(19):34-47.
[2]王健.蒸汽冷凝水回收综述[J].区域供热,2004(1):25-28.
[3]赵之军,冯伟忠,张玲,等.电站锅炉排烟余热回收的理论分析与工程实践[J].动力工程学报,2009,29(11):994-997.
[4]雷承勇,王恩禄,黄晓宇,等.燃煤电站烟气水分回收技术试验研究[J].锅炉技术,2011,42(1):5-8.
[5]谭青,王东平,王伟敏,等.锅炉烟气余热回收装置[J].上海节能,2012(5):30-33.
[6]WANG D,BAO A,KUNC W,et al.Coal power plant flue gas waste heat and water recovery[J].Applied Energy,2012(1):341-348.
[7]姚振刚,陈曦,白岩,等.燃煤电站锅炉烟气余热回收利用[J].东北电力技术,2013,34(4):32-35.
[8]丛晓蓉,汪洋.燃煤电站锅炉烟气余热与水分联合回收技术展望与分析[J].发电与空调,2012,33(2):26-28.
[9]裘立春.大型燃煤电站锅炉冒白烟的研究[J].锅炉技术,2015,46(3):26-29.
[10]CRDOBA P.Status of flue gas desulphurisation(FGD)systems from coal-fired power plants:overviewof the physicchemical control processes of wet limestone FGDs[J].Fuel,2015,144:274-286.
[11]许全坤,汪洋.基于膜分离方法的烟气水分回收技术研究现状及展望[J].华电技术,2013,35(5):25-28.
[12]段俊阳,薛章涵,孙苗青,等.燃煤锅炉烟气余热及水分协同回收系统的性能分析[J].节能,2016,35(1):48-52.
[13]梁文静.锅炉余热回收实用性的改进[J].中国特种设备安全,2012(10):62-63.
[14]吴乃新,宋治璐,王恩禄,等.褐煤干燥提质技术比较与水分回收及余热利用方案[J].锅炉技术,2012,43(4):45-48.
[15]甘露,毛霖,李红飞,等.燃煤烟气水分回收技术概述[J].资源节约与环保,2017(8):24-25.
[16]DOLKEDAHL B C,WEBER G F,COLLONGS ME.Water extraction from coal-fired power plant fiue gas[R].Grand Forks:University of North Dakota,2006.
[17]徐钢,许诚,杨勇平,等.电站锅炉余热深度利用及尾部受热面综合优化[J].中国电机工程学报,2013,33(14):1-8.
[18]曹明凯.喷淋式烟气冷凝余热回收过程数值模拟及实验研究[D].北京:北京建筑大学,2016.
[19]陈林,孙颖颖,梁江涛,等.用于烟气余热回收的塑料翅片管换热器的设计及分析[J].化工学报,2014,65(增刊1):175-179.
[20]田秀芳,詹桂娟,江崇旭.使用吸收式热泵和直接接触式换热器的锅炉烟气余热回收方案[J].暖通空调,2017,47(增刊1):21-26.
[21]李琼,张颖,安国银,等.电站锅炉烟气余热回收利用装置的试验分析及研究[J].电站系统工程,2016(2):34-36.
[22]宋倩,刘春花,王爽,等.硫藏双华李柠檬酸烫漂脱硫工艺参数及其对品质的影响研究[J].食品工业科技,2016,37(19):107-110.
[23]范顾超,陈魏俊.上海长兴岛第二电厂烟气余热回收装置[C]//2013年中国电机工程学会年会,2013.
[24]熊英莹,谭厚章,许伟刚,等.火电厂烟气潜热和凝结水回收的试验研究[J].热力发电,2015(6):77-81.
[25]周洪光,李延兵.火电厂湿法脱硫石膏雨和白雾治理措施及效果分析[J].电力科技与环保,2014,30(6):34-37.
[26]KUO W S,LIE Y M,HSIEH Y Y,et al.Condensation heat transfer and pressure drop of refrigerant R-410A flowin a vertical plate heat exchanger[J].International Journal of Heat&Mass Transfer,2005,48(25/26):5205-5220.
[27]雷鑫,耿爱民,孔祥渠.燃气锅炉烟气冷凝水回收利用分析[J].中国高新技术企业,2016(21):87-88.
[28]CONDE MR.Properties of aqueous solutions of lithium and calcium chlorides:formulations for use in air conditioning equipment design[J].International Journal of Thermal Sciences,2004,43(4):367-382.
[29]田路泞,韩哲楠,董勇,等.燃煤电厂湿烟气余热及水分回收技术研究[J].洁净煤技术,2017,23(5):105-110.
[30]汪洋,沈煜晖,陶爱平,等.烟气膜法水分捕集技术的研究进展[J].电力科技与环保,2013,29(3):13-14.
[31]韦存忠,沈隼睿.膜法海水淡化技术在玉环电厂的应用[J].电力科技与环保,2010,26(5):48-49.
[32]陈海平,刘彦达,周亚男.中空纤维膜法回收火电厂烟气中水蒸气[J].热力发电,2017,46(1):100-105.
[33]MOHR M,YlTALO S,KLIPPEL N,et al.Submicron fly ash penetration through electrostatic precipitators at two coal power plants[J].Aerosol Science&Technology,1996,24(3):191-204.
[34]高金强,隋国哲,李金龙.膜法气体除湿的研究进展[J].化工时刊,2014,28(3):39-43.
[35]CONDE MR.Properties of aqueous solutions of lithium and calcium chlorides:formulations for use in air conditioning equipment design[J].International Journal of Thermal Sciences,2004,43(4):367-382.
[36]刘晓华,李震,张涛.溶液除湿[M].北京:中国建筑工业出版社,2014.
[37]梁珍,沈恒根,郭建,等.火电厂冷凝热回收利用的技术经济分析[J].东华大学学报(自然科学版),2009,35(5):580-584.
[38]朱进林,谢晶,王金峰,等.蒸发式冷凝器喷嘴喷淋性能的数值模拟及试验[J].农业工程学报,2014(19):34-47.
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