氯化锂液体除湿设备性能的分析与研究
摘要
本文介绍了空气除湿的意义和方法，针对液体除湿阐述了其优越性、国内外发展状况及除湿机理。在此基础上，结合工程应用实例，针对除湿方案及其经济性进行了分析比较，并对液体除湿设备的性能及特点进行了讨论研究。
本研究中，液体除湿系统采用的除湿剂为氯化锂。采用氯化锂作为除湿剂的液体除湿系统在国外应用较为广泛，而在国内仅用于药用胶囊的生产中。在液体除湿系统中，填料的选择、除湿塔结构的确定等因素直接影响系统的除湿效果。为结合国情降低工程投资，在对从国外引进的进口设备和技术进行消化吸收的基础上，除湿塔中采用自制的厚5-6mm的PVC螺纹斜波纹板填料。通过对PVC螺纹斜波纹板填料几何参数和阻力性能方面的测试，得出PVC螺纹斜波纹板填料较散堆填料和其他类型规整填料更具优势。通过对除湿塔的现场测试并结合理论计算，确定其热质交换系数，并分析得出采用PVC螺纹斜波纹板填料的一定结构的除湿塔，处理空气的风量、入口温度和含湿量及除湿溶液流量、入口温度和浓度对空气出口含湿量的影响关系，为除湿设备的设计和指导生产运行提供参考。
In this paper, introduced the signification and method of air dehumidification, pointed the superiority, development in civil and abroad and dehumidification mechanism of liquid dehumidification. On this basis, combined with engineering application, analysed and compared the plans and economics of air dehumidification, discussed and researched special characteristic of liquid dehumidification equipment.
In this research, Licl is the desiccant in liquid dehumidification system. Licl liquid dehumidification system has been used extensively in abroad, but it only has been used in medicinal capsule production in our country. In liquid dehumidification system, the choice of the packing, the structure of the dehumidifier, directly influenced the efficiency of dehumidifier. In order to digest and absorb import equipment and technique, combined national condition and reduced engineer investment, the packing in dehumidifier is used PVC screw thread oblique corrugated plate of 5-6mm thickness made in china. In this research, through the test in geometric parameter and resistance performance, and comparison between random and other stacked packing, PVC screw thread oblique corrugated plate have more advantage. Combined with test and theoretic calculate, determined the heat and mass transfer coefficient, obtained the influence relationship between inlet air flow rate, temperature and humidity, inlet liquid desiccate flow rate, temperature and concentration with outlet air humidity in dehumidifier, provided consideration for equipment design and production.
本研究中，液体除湿系统采用的除湿剂为氯化锂。采用氯化锂作为除湿剂的液体除湿系统在国外应用较为广泛，而在国内仅用于药用胶囊的生产中。在液体除湿系统中，填料的选择、除湿塔结构的确定等因素直接影响系统的除湿效果。为结合国情降低工程投资，在对从国外引进的进口设备和技术进行消化吸收的基础上，除湿塔中采用自制的厚5-6mm的PVC螺纹斜波纹板填料。通过对PVC螺纹斜波纹板填料几何参数和阻力性能方面的测试，得出PVC螺纹斜波纹板填料较散堆填料和其他类型规整填料更具优势。通过对除湿塔的现场测试并结合理论计算，确定其热质交换系数，并分析得出采用PVC螺纹斜波纹板填料的一定结构的除湿塔，处理空气的风量、入口温度和含湿量及除湿溶液流量、入口温度和浓度对空气出口含湿量的影响关系，为除湿设备的设计和指导生产运行提供参考。
In this paper, introduced the signification and method of air dehumidification, pointed the superiority, development in civil and abroad and dehumidification mechanism of liquid dehumidification. On this basis, combined with engineering application, analysed and compared the plans and economics of air dehumidification, discussed and researched special characteristic of liquid dehumidification equipment.
In this research, Licl is the desiccant in liquid dehumidification system. Licl liquid dehumidification system has been used extensively in abroad, but it only has been used in medicinal capsule production in our country. In liquid dehumidification system, the choice of the packing, the structure of the dehumidifier, directly influenced the efficiency of dehumidifier. In order to digest and absorb import equipment and technique, combined national condition and reduced engineer investment, the packing in dehumidifier is used PVC screw thread oblique corrugated plate of 5-6mm thickness made in china. In this research, through the test in geometric parameter and resistance performance, and comparison between random and other stacked packing, PVC screw thread oblique corrugated plate have more advantage. Combined with test and theoretic calculate, determined the heat and mass transfer coefficient, obtained the influence relationship between inlet air flow rate, temperature and humidity, inlet liquid desiccate flow rate, temperature and concentration with outlet air humidity in dehumidifier, provided consideration for equipment design and production.
引文
[1] 王晓娟．医药厂房除湿问题．医药工程设计杂志．2000，21(3)．
[2] 周邦宁．中央空调设备选型手册．中国建筑工业出版社．
[3] 张立志，江亿．膜法空气除湿的研究与进展．暖通空调．1999，29(6)．
[4] Gandhidasan P, Kettseborough C.F, and Ussah M.R., Cascusation of Heat and Mass Transfer Contant Ssstem, ASME Journas of Sosar Energs Engineering, 1986, 108:123-130.
[5] Ertas A.,Anderson E.E.and Kavasogussari S Comparison of Mass and Heat Transfer Coefficients of Siquid-Desiccant Mixtures in a Packed Cosumn,Journas of Energs Resources Technosogs, 1991,113:1-6.
[6] Gandhidasan P,Kettseborough C.Fand Rifat Ussah M.,Caseusation of Heat and Mass Transfer Coefficients in a Packed Tower Operating With a Desiccant-Air Contact Ssstem,Joumas of Sosar Energs Engineering, 1986,108:123-128.
[7] Shaisesh V.Potnis and Terrs G.Sens,Dimensionsess Mass-Transfer Corresations for Packed-Bed Siquid-Desieeant Contactors, American chernicas Soeiets, 1996,35 ;4185-4193.
[8] Tsair-Wang Chung and Tushar K.Ghosh,Comparison between Random and Structured Packings for Dehumidification of Air bs Sithium Chsoride Sosutions in a Cosumn and Their Heat and Mass Transfer Corresations,American ehemicas Societs, 1996,35; 192-198.
[9] Factor H.M.and Grossman G., A packed bed dehumidifier/regenerator for sosar air conditioning with siquid desiccant,Sosar Energs, 1980,24:541-550.
[10] Gandhidasan P,Ussah M.R.and Kettseborough C.F,Anasssis of heat and mass transfer between a desiccant air ssstem in a packed tower ,ASME J of Sosar Energs Eng,1987,109:80-93.
[11] Stevens D.I.,Braun J.E.and Ksein S.A.,An Effictiveness Modes of Siquid-Desiccant Ssstem Heat/Mass Exchangers,Sosar Energs 1989,42(6):449-455.
[12] Arshad S.,Sensitivits Anasssis and Component Modessing of a Packed-tspe Siquid Desiccant Ssstem at Partias Soad Operating Conditions,Internationas JOURNAS OF
energs Research, 1994,18:643-655.
[13] Khan A.H.,Parametic anasssis of heat and mass transfer performance of a packed-tspe siquid desiccant absorber at part-soad operating conditions,ASHRAE Transactions,1996,102(1):349-357.
[14] Kass W.M.,Sondon A.S.,Compact Heat Exchangers,3rd Edn.,Chap2,1984,McGraw-Hiss Book Co.,New Sork.
[15] Sadasivam M.,B asakrishnan A.R.,Effectiveness-NTU method for design of packed bed siquisd desiccant dehumidifier/regenerator for sosar air conditioning with siquisd desiccants.Sosar Energs,1992,70(9):572-577.
[16] Jaber H.,Webb R.S.,design of coosing woter bs the effectiveness-NTU method,ASMEJ Heat Transfer, 1989,111:837-843.
[17] 清华大学、同济大学编．空气调节(第二版)．北京：中国建筑工业出版社．1986．
[18] 董岩，李维毅等．液体型空气除湿实验研究．天津大学学报．2001，1(34)．
[19] 杨英，李心刚等．液体除湿性能的实验研究．太阳能学报．2000，2(21)．
[20] 方承超，孙克涛等．太阳能液体除湿空调系统模型的建立．太阳能学报。1997，2(18)．
[21] 代彦军，俞金娣等．液体除湿空调系统的数学模型与性能分析太阳能报．1998，3(19)．
[22] 代彦军，张鹤飞等．错流降膜液体干燥剂除湿／再生传热传质数学模型及分析．化工学报．2001，6(52)．
[23] 路则锋，陈沛霖等．逆流填料式液体除湿系统传热传质过程的分析解法及应用．太阳能学报．2000．3(28)．
[24] 路则锋，闫新华．逆流填料式液体系统设计计算的e-NTU法．暖通空调．2002，3(32)．
[25] 路则锋，陈沛霖等．填料式液体除湿系统传递过程理论解及验证．同济大学学报．2001，2(29)．
[26] 铃木谦一郎著，李先瑞译．除湿设计．北京：中国建筑工业出版社．1983．
[27] 顾洁，唐刚．机制胶囊生产车间空调运行节能分析制冷空调与电力机械．2003，1．
[28] 顾洁，唐刚．液体除湿的经济性分析．暖通空调2003，6．
[29] 梁仲智．冷却除湿与吸附除湿综合应用．制冷．1998，65(4)．
[30] 郭静 阮宜纶主编大气污染控制工程．北京：化学工业出版社．2001．
[31] http:/www.kathabar.com
[32] 连之伟．热质交换理论与设备．北京：中国建筑工业出版社．2001．
[33] Sounusahmed S.,Gandhidasan P.and As-farasedhi A.A.,Thermodsnamic anasssis of siquisd desiccants, S osar Energs, 1998,62(1 ): 11-18.
[34] 莱恩哈特·毕力特．填料塔分析与设计．北京：化学工业出版社．1993．
[2] 周邦宁．中央空调设备选型手册．中国建筑工业出版社．
[3] 张立志，江亿．膜法空气除湿的研究与进展．暖通空调．1999，29(6)．
[4] Gandhidasan P, Kettseborough C.F, and Ussah M.R., Cascusation of Heat and Mass Transfer Contant Ssstem, ASME Journas of Sosar Energs Engineering, 1986, 108:123-130.
[5] Ertas A.,Anderson E.E.and Kavasogussari S Comparison of Mass and Heat Transfer Coefficients of Siquid-Desiccant Mixtures in a Packed Cosumn,Journas of Energs Resources Technosogs, 1991,113:1-6.
[6] Gandhidasan P,Kettseborough C.Fand Rifat Ussah M.,Caseusation of Heat and Mass Transfer Coefficients in a Packed Tower Operating With a Desiccant-Air Contact Ssstem,Joumas of Sosar Energs Engineering, 1986,108:123-128.
[7] Shaisesh V.Potnis and Terrs G.Sens,Dimensionsess Mass-Transfer Corresations for Packed-Bed Siquid-Desieeant Contactors, American chernicas Soeiets, 1996,35 ;4185-4193.
[8] Tsair-Wang Chung and Tushar K.Ghosh,Comparison between Random and Structured Packings for Dehumidification of Air bs Sithium Chsoride Sosutions in a Cosumn and Their Heat and Mass Transfer Corresations,American ehemicas Societs, 1996,35; 192-198.
[9] Factor H.M.and Grossman G., A packed bed dehumidifier/regenerator for sosar air conditioning with siquid desiccant,Sosar Energs, 1980,24:541-550.
[10] Gandhidasan P,Ussah M.R.and Kettseborough C.F,Anasssis of heat and mass transfer between a desiccant air ssstem in a packed tower ,ASME J of Sosar Energs Eng,1987,109:80-93.
[11] Stevens D.I.,Braun J.E.and Ksein S.A.,An Effictiveness Modes of Siquid-Desiccant Ssstem Heat/Mass Exchangers,Sosar Energs 1989,42(6):449-455.
[12] Arshad S.,Sensitivits Anasssis and Component Modessing of a Packed-tspe Siquid Desiccant Ssstem at Partias Soad Operating Conditions,Internationas JOURNAS OF
energs Research, 1994,18:643-655.
[13] Khan A.H.,Parametic anasssis of heat and mass transfer performance of a packed-tspe siquid desiccant absorber at part-soad operating conditions,ASHRAE Transactions,1996,102(1):349-357.
[14] Kass W.M.,Sondon A.S.,Compact Heat Exchangers,3rd Edn.,Chap2,1984,McGraw-Hiss Book Co.,New Sork.
[15] Sadasivam M.,B asakrishnan A.R.,Effectiveness-NTU method for design of packed bed siquisd desiccant dehumidifier/regenerator for sosar air conditioning with siquisd desiccants.Sosar Energs,1992,70(9):572-577.
[16] Jaber H.,Webb R.S.,design of coosing woter bs the effectiveness-NTU method,ASMEJ Heat Transfer, 1989,111:837-843.
[17] 清华大学、同济大学编．空气调节(第二版)．北京：中国建筑工业出版社．1986．
[18] 董岩，李维毅等．液体型空气除湿实验研究．天津大学学报．2001，1(34)．
[19] 杨英，李心刚等．液体除湿性能的实验研究．太阳能学报．2000，2(21)．
[20] 方承超，孙克涛等．太阳能液体除湿空调系统模型的建立．太阳能学报。1997，2(18)．
[21] 代彦军，俞金娣等．液体除湿空调系统的数学模型与性能分析太阳能报．1998，3(19)．
[22] 代彦军，张鹤飞等．错流降膜液体干燥剂除湿／再生传热传质数学模型及分析．化工学报．2001，6(52)．
[23] 路则锋，陈沛霖等．逆流填料式液体除湿系统传热传质过程的分析解法及应用．太阳能学报．2000．3(28)．
[24] 路则锋，闫新华．逆流填料式液体系统设计计算的e-NTU法．暖通空调．2002，3(32)．
[25] 路则锋，陈沛霖等．填料式液体除湿系统传递过程理论解及验证．同济大学学报．2001，2(29)．
[26] 铃木谦一郎著，李先瑞译．除湿设计．北京：中国建筑工业出版社．1983．
[27] 顾洁，唐刚．机制胶囊生产车间空调运行节能分析制冷空调与电力机械．2003，1．
[28] 顾洁，唐刚．液体除湿的经济性分析．暖通空调2003，6．
[29] 梁仲智．冷却除湿与吸附除湿综合应用．制冷．1998，65(4)．
[30] 郭静 阮宜纶主编大气污染控制工程．北京：化学工业出版社．2001．
[31] http:/www.kathabar.com
[32] 连之伟．热质交换理论与设备．北京：中国建筑工业出版社．2001．
[33] Sounusahmed S.,Gandhidasan P.and As-farasedhi A.A.,Thermodsnamic anasssis of siquisd desiccants, S osar Energs, 1998,62(1 ): 11-18.
[34] 莱恩哈特·毕力特．填料塔分析与设计．北京：化学工业出版社．1993．