高气液比复合填料板的压降与持液性能研究
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摘要
为实现对低压大气量废气中的污染物进行高效的分离与富集,开发了一种高气液比复合填料板,以空气-水为实验物系,对该复合填料板的压降和持液性能进行了研究。结果表明,复合填料板的干板压降Δp与气相动能因子F的关系符合幂函数关系,在相同喷淋密度(L=30.6L·m~(-2)·h~(-1))条件下,复合填料板的动持液量较BX500填料的整体高了58～130倍。在相同L条件下F从3.2增长到6.5 m·s~(-1)·kg~(1/2)·m~(-3/2),复合填料板的湿板压降增长了162%～201%;而相同F条件下L从30增长到60L·m~(-2)·h~(-1),湿板压降增长了67%～108%。与普通填料相比,复合填料板在高气液比条件下表现出了低压降和高持液量的显著优势。
In order to effectively separate and concentrate pollutants with low pressure drop and high gas-liquid ratios, a novel composite packing tray working under high gas-liquid ratios was developed. The pressure drop and liquid holdup properties of the novel compound packing tray were investigated with an air-water experimental system. The results show that the relationship between the pressure drop Δp and F-factor can be fitted with power function. The liquid holdup of the novel compound tray was 58～130 times higher than that of the BX500 packing under the same spraying density(L=30.6 L·m~(-2)·h~(-1)). When F increases from 3.2 m·s~(-1)·kg~(1/2)·m~(-3/2) to 6.5 m·s~(-1)·kg~(1/2)·m~(-3/2), the pressure drop of the wet composite tray increases by 162%～201%under the same condition of L. Meanwhile, when L increases from 30 L·m~(-2)·h~(-1) to 60 L·m~(-2)·h~(-1), the pressure drop increases by 67%～108% under the same condition of F. Compared with BX500 packing, the composite tray shows significant performance enhancement of pressure drop and liquid hold-up under high gas-liquid ratios.
In order to effectively separate and concentrate pollutants with low pressure drop and high gas-liquid ratios, a novel composite packing tray working under high gas-liquid ratios was developed. The pressure drop and liquid holdup properties of the novel compound packing tray were investigated with an air-water experimental system. The results show that the relationship between the pressure drop Δp and F-factor can be fitted with power function. The liquid holdup of the novel compound tray was 58～130 times higher than that of the BX500 packing under the same spraying density(L=30.6 L·m~(-2)·h~(-1)). When F increases from 3.2 m·s~(-1)·kg~(1/2)·m~(-3/2) to 6.5 m·s~(-1)·kg~(1/2)·m~(-3/2), the pressure drop of the wet composite tray increases by 162%～201%under the same condition of L. Meanwhile, when L increases from 30 L·m~(-2)·h~(-1) to 60 L·m~(-2)·h~(-1), the pressure drop increases by 67%～108% under the same condition of F. Compared with BX500 packing, the composite tray shows significant performance enhancement of pressure drop and liquid hold-up under high gas-liquid ratios.
引文
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[13]聂勇,计建炳,徐之超,等.复合塔板气液运动的实验研究[J].高校化学工程学报,2003,17(4):365-371.NIE Y,JI J B,XU Z C,et al.Study on the Gas-liquid Performance of the Compound Tray[J].Journal of Chemical Engineering of Chinese Universities,2003,17(4):365-371.
[14]田原宇,乔英云.新型复合塔板技术[M].北京:化学工业出版社,2014.TIAN Y Y,QIAO Y Y.Novel compound tray techniques[M].Beijing:Chemical Industry Press,2014.
[15]李群生,田原铭,常秋连.新型高效规整填料性能研究[J].北京化工大学学报(自然科学版),2008,35(1):1-4.LI Q S,TIAN Y M,CHANG Q L.Performance characteristics of a new high efficiency structured packing material[J].Journal of Beijing University of Chemical Technology(Natural Science),2008,35(1):1-4.
[16]齐国祯,谢在库,钟思青,等.滴流床的压降和持液量[J].华东理工大学学报(自然科学版),2006,(1):20-23+46.QI G Z,XIE Z K,ZHONG S Q,et al.Pressure drop and liquid holdup in trickle bed[J].Journal of East China University of Science and Technology(Natural Science),2006,32(1):20-23,46.
[17]BILLET R,MADKOWIAK J,PAJG K M.Hydraulics and mass transfer in flied tube columns[J].Chemical Engineering&Processing Process Intensification,1985,19(l):39-47.
[18]BILLET R,SCHULTS M.Prediction of mass transfer columns with dumped and arranged packings:updated summary of the calculation method of billet and schultes[J].Chemical Engineering Research&Design,1999,77(6):498-504.
[2]李春利,马晓冬.大通量高效传质技术--立体传质塔板CTST的研究进展[J].河北工业大学学报,2013,42(1):19-28.LI C L,MA X D.The research of CTST[J].Journal of Hebei University of technology,2013,42(1):19-28.
[3]ALIZADEHDAKHEL A,RAHIMI M,ALSAIRAFI A A.CFD and experimental studies on the effect of valve weight on performance of a valve tray column[J].Computers and Chemical Engineering,2010,34(8):1-8.
[4]刘天奇,王嘉骏,冯连芳.新结构气液相并流鼓泡塔式反应器流动特性与CFD模拟[J].高校化学工程学报,2016,30(5):1088-1094.LIU T Q,WANG J J,FENG L F.Hydrodynamics in a novel gas-liquid concurrent bubble reactor and its CFD simulation[J].Journal of Chemical Engineering of Chinese Universities,2016,30(5):1088-1094.
[5]李希,李兆奇,管小平,等.气液鼓泡塔流体力学研究进展[J].高校化学工程学报,2015,29(4):765-779.LI X,LI Z Q,GUAN X P,et al.Progress in hydrodynamics of gas-liquid bubble columns[J].Journal of Chemical Engineering of Chinese Universities,2015,29(4):765-779.
[6]MA Z H,ZHANG H,HU Y Y,et al.Development and industrial application of bilayer fixed valve tray[J].Petro-Chemical Equipment,2012,41(1):1-4.
[7]张武龙,杜庆浩,李群生,等.导向孔-梯形浮阀复合塔板流体力学及传质性能[J].北京化工大学学报(自然科学版),2015,42(2):35-40.ZHANG W L,DU Q H,LI Q S,et al.Hydrodynamics and mass transfer performance of flow-guided hole-trapezoidal valve trays[J].Journal of Beijing University of Chemical Technology(Natural Science),2015,42(2):35-40.
[8]姚文,李育敏,郭成峰,等.网板填料复合旋转床的传质性能[J].高校化学工程学报,2013,27(3):386-392.YAO W,LI Y M,GUO C F,et al.Mass transfer performance of rotating compound bed with perforated sheet and packing[J].Journal of Chemical Engineering of Chinese Universities,2013,27(3):386-392.
[9]李群生,张苗,程闯,等.新型导向立体喷射填料式塔板的流体力学及传质性能研究[J].北京化工大学学报(自然科学版),2016,43(6):22-26.LI Q S,ZHANG M,CHENG C,et al.Hydrodynamics and mass transfer performance of a flow-guided jet packing tray(FJPT)[J].Journal of Beijing University of Chemical Technology(Natural Science),2016,43(6):22-26.
[10]刘继东,吕建华,张竞平,等.新型立体传质塔板及其流体力学性能[J].化工学报,2005,56(6):1144-1149.LIU J D,LV J H,ZHANG J P,et al.Combined trapezoid spray tray and its hydromechanics[J].Journal of Chemical Industry and Engineering,2005,56(6):1144-1149.
[11]赵洪康,王宝华,金君素,等.新型导向立体板填复合塔板的研究与工业应用[J].中国科学:化学,2018,48(6):666-675.ZHAO H K,WANG B H,JIN J S,et al.Application and performance analysis of the novel flow-guided vertical packing tray[J].SCIENTIA SINICA Chimica,2018,48(6):666-675.
[12]黄本赫,李玉安,黄耀林,等.导向孔与筛孔和导向浮阀复合塔板的实验研究[J].化学工程,2016,44(4):26-30.HUANG B H,LI Y A,HUANG Y L,et al.Experimental study of directed valve tray with guide holes and sieves[J].Chemical Engineering,2016,44(4):26-30.
[13]聂勇,计建炳,徐之超,等.复合塔板气液运动的实验研究[J].高校化学工程学报,2003,17(4):365-371.NIE Y,JI J B,XU Z C,et al.Study on the Gas-liquid Performance of the Compound Tray[J].Journal of Chemical Engineering of Chinese Universities,2003,17(4):365-371.
[14]田原宇,乔英云.新型复合塔板技术[M].北京:化学工业出版社,2014.TIAN Y Y,QIAO Y Y.Novel compound tray techniques[M].Beijing:Chemical Industry Press,2014.
[15]李群生,田原铭,常秋连.新型高效规整填料性能研究[J].北京化工大学学报(自然科学版),2008,35(1):1-4.LI Q S,TIAN Y M,CHANG Q L.Performance characteristics of a new high efficiency structured packing material[J].Journal of Beijing University of Chemical Technology(Natural Science),2008,35(1):1-4.
[16]齐国祯,谢在库,钟思青,等.滴流床的压降和持液量[J].华东理工大学学报(自然科学版),2006,(1):20-23+46.QI G Z,XIE Z K,ZHONG S Q,et al.Pressure drop and liquid holdup in trickle bed[J].Journal of East China University of Science and Technology(Natural Science),2006,32(1):20-23,46.
[17]BILLET R,MADKOWIAK J,PAJG K M.Hydraulics and mass transfer in flied tube columns[J].Chemical Engineering&Processing Process Intensification,1985,19(l):39-47.
[18]BILLET R,SCHULTS M.Prediction of mass transfer columns with dumped and arranged packings:updated summary of the calculation method of billet and schultes[J].Chemical Engineering Research&Design,1999,77(6):498-504.
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