气液传质液滴界面的Marangoni对流

doi:10.3969/j.issn.0438-1157.2013.08.021

化工学报 ›› 2013, Vol. 64 ›› Issue (8): 2846-2852.DOI: 10.3969/j.issn.0438-1157.2013.08.021

气液传质液滴界面的Marangoni对流

林晗丹, 焦放健, 余光雄, 颜俊, 沙勇

厦门大学化学化工学院化学工程与生物工程系, 福建厦门 361005

收稿日期:2012-12-12 修回日期:2013-04-17 出版日期:2013-08-05 发布日期:2013-08-05
通讯作者: 沙勇
作者简介:林晗丹(1988- ),女,硕士研究生。
基金资助:
国家自然科学基金项目(20606027)。

Marangoni convection at droplet interface during gas-liquid mass transfer

LIN Handan, JIAO Fangjian, YU Guangxiong, YAN Jun, SHA Yong

Department of Chemical Engineering and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China

Received:2012-12-12 Revised:2013-04-17 Online:2013-08-05 Published:2013-08-05
Supported by:
supported by the National Natural Science Foundation of China(20606027).

摘要/Abstract

摘要： 通过氮气吹扫双组分液滴,用激光投影法定性观察由于轻组分向气相扩散导致的Marangoni对流结构,结果表明Marangoni对流以小尺度涡流结构和大尺度对称循环流动的形式出现,其中乙醇-水体系首先出现小尺度涡流结构,涡流不断长大合并;丙酮-水体系则以大尺度对称循环对流结构为主,随后在近界面处形成小尺度涡流结构。采用氮气吹扫乙醇-水及丙酮-水静止悬垂单液滴的方法,通过比较实验测量传质系数与理论预测值,表明液滴近界面处Marangoni对流小尺度涡结构对传质促进作用较小,而液滴内大尺度循环对流结构对传质促进作用大。

关键词: 单液滴, 传质, Marangoni对流, 界面湍动

Abstract: By sweeping binary droplets with N₂ gas,the Marangoni convection driven by desorption of light component into gas phase is observed with the help of laser shadowgraph optical method.The results show that Marangoni convection arises as small-scale vortex and large-scale symmetrical circular flow.The small-scale vortex structure appears in the ethanol-water droplet at the very beginning,and then vortex structure develops and merges to form larger vortex flow.At the interface of acetone-water binary droplet,symmetrical circular flow appears at first,and then vortex flow arises in the circular flow.For the quiescent single binary droplet composed of ethanol-water and acetone-water separately,the mass transfer coefficient is measured to compare with theoretical prediction while N₂ gas purges the gas-liquid interface. Experimental results show that the large-scale symmetrical circular inside the droplet can promote mass transfer process much better than the small-scale vortex near the interface of droplet.

Key words: single droplet, mass transfer, Marangoni convection, interface turbulence

中图分类号:

TQ028

林晗丹, 焦放健, 余光雄, 颜俊, 沙勇. 气液传质液滴界面的Marangoni对流[J]. 化工学报, 2013, 64(8): 2846-2852.

LIN Handan, JIAO Fangjian, YU Guangxiong, YAN Jun, SHA Yong. Marangoni convection at droplet interface during gas-liquid mass transfer[J]. CIESC Journal, 2013, 64(8): 2846-2852.

参考文献 18

[1]	Sha Yong(沙勇),Li Zhangyun(李樟云),Lin Fenfen(林芬芬).Shadowgraph observation of the interfacial turbulence phenomena in the gas-liquid mass transfer[J].CIESC Journal(化工学报),2010,61(4):844-847
[2]	Sha Y,Ye L.Unordered roll flow patterns of interfacial turbulence and its influence on mass transfer[J].J. Chem. Eng. Japan,2006,39(3):267-274
[3]	Linde H,Velarde M G,Waldhelm W.Interfacial wave motions due to Marangoni instability[J].J. Colloid Interface Sci.,2001,236(2):214-224
[4]	Pertler M,Haberl M,Rommel W.Mass transfer across liquid-phase boundaries[J].Chem. Eng. Proc.,1995,34(3):269-277
[5]	Shi Y,Eckert K.Orientation-dependent hydrodynamic instabilities from chemo-Marangoni cells to large scale interfacial deformations[J].Chinese J. Chem. Eng.,2007,15(5):748-753
[6]	Kim M C,Choi Ch K,Yoon D Y,Chung T J.Onset of Marangoni convection in a horizontal fluid layer experiencing evaporative cooling[J].Ind. Eng. Chem. Res.,2007,46(17):5775-5784
[7]	Imaishi N,Fujinwa K,Hozawa M.Interfacial turbulence in gas-liquid mass transfer[J].Int. Chem. Eng.,1982,22(4):659-665
[8]	Sun Z F,Yu K T,Wang S Y.Absorption and desorption of carbon dioxide into and from organic solvents:effects of Rayleigh and Marangoni instability[J].Ind. Eng. Chem. Res.,2002,41(7):1905-1913
[9]	Lu Hsin-Hsen,Yang Yu-Min,Maa Jer-Ru.Effect of artificially provoked Marangoni convection at a gas/liquid interface on absorption[J].Int. Chem. Eng. Res.,1996,35:1921-1928
[10]	Wegener M,Grünig J,Stüber J.Transient rise velocity and mass transfer of a single drop with interfacial instabilities-experimental investigations[J].Chem. Eng. Sci.,2007,62:2967-2978
[11]	Agble D,Mendes-Tatsis M A.The effect of surfactants on interfacial mass transfer in binary liquid-liquid systems[J].Int. J. Heat Mass Transfer,2006,52(12):4071-4078
[12]	Mao Z S,Chen J Y.Numerical simulation of the Marangoni effect on mass transfer to single slowly moving drops in the liquid-liquid system[J].Chem.Eng.Sci.,2004,59(8/9):1815-18281
[13]	Wang J F,Yang C,Mao Z S.A simple weighted integration method for calculating curvature for suppression of parasitic flow in the level set approach[J].AIChE J.,2011,57(10):2670-2683
[14]	Mandal D K,Bakshi S.Internal circulation in a single droplet evaporating in a closed chamber[J].International Journal of Multiphase Flow,2012,40:42-51
[15]	Crank J.The Mathematics of Diffusion[M].London:Clarendon Press,1975
[16]	Arendt B,Eggers R.Interaction of Marangoni convection with mass transfer effects at droplets[J].Int. J. Heat Mass Transfer,2007,50:2805-2815
[17]	Asfou A F A,Dullien F A L.Dependence of mutual diffusivities on concentration in liquid n-alkane binary mixtures at 25℃:a modification of the Asfour-Dullien equation[J].Chemical Engineering Science,1986,41(7):1891-1894
[18]	Poling B E,Prausnitz J M,John Paul O C.The Properties of Gases and Liquids[M].New York:McGraw-Hill Book Company,2006

气液传质液滴界面的Marangoni对流

Marangoni convection at droplet interface during gas-liquid mass transfer

PDF (PC)

可视化

被引次数

摘要/Abstract

引用本文

使用本文

参考文献 18

相关文章 15

编辑推荐

Metrics

本文评价

[1]	晁京伟, 许嘉兴, 李廷贤. 基于无管束蒸发换热强化策略的吸附热池的供热性能研究[J]. 化工学报, 2023, 74(S1): 302-310.
[2]	李艺彤, 郭航, 陈浩, 叶芳. 催化剂非均匀分布的质子交换膜燃料电池操作条件研究[J]. 化工学报, 2023, 74(9): 3831-3840.
[3]	张媛媛, 曲江源, 苏欣欣, 杨静, 张锴. 循环流化床燃煤机组SNCR脱硝过程气液传质和反应特性[J]. 化工学报, 2023, 74(6): 2404-2415.
[4]	李正涛, 袁志杰, 贺高红, 姜晓滨. 疏水界面上的NaCl液滴蒸发过程内环流调控机制研究[J]. 化工学报, 2023, 74(5): 1904-1913.
[5]	王皓, 唐思扬, 钟山, 梁斌. MEA吸收CO₂富液解吸过程中固体颗粒表面的强化作用分析[J]. 化工学报, 2023, 74(4): 1539-1548.
[6]	钱志广, 樊越, 王世学, 岳利可, 王金山, 朱禹. 吹扫条件对PEMFC阻抗弛豫现象和低温启动的影响[J]. 化工学报, 2023, 74(3): 1286-1293.
[7]	何洋, 高森虎, 吴青云, 张明理, 龙涛, 牛佩, 高景辉, 孟颖琪. 析湿工况下平直开缝翅片传热传质特性的数值研究[J]. 化工学报, 2023, 74(3): 1073-1081.
[8]	贾露凡, 王艺颖, 董钰漫, 李沁园, 谢鑫, 苑昊, 孟涛. 微流控双水相贴壁液滴流动强化酶促反应研究[J]. 化工学报, 2023, 74(3): 1239-1246.
[9]	何万媛, 陈一宇, 朱春英, 付涛涛, 高习群, 马友光. 阵列凸起微通道内气液两相传质特性研究[J]. 化工学报, 2023, 74(2): 690-697.
[10]	王煦清, 严圣林, 朱礼涛, 张希宝, 罗正鸿. 填料塔中有机胺吸收CO₂气液传质的研究进展[J]. 化工学报, 2023, 74(1): 237-256.
[11]	张浩, 王子悦, 程钰洁, 何晓辉, 纪红兵. 单原子催化剂规模化制备的研究进展[J]. 化工学报, 2023, 74(1): 276-289.
[12]	王凯玥, 马永丽, 李琛, 刘明言. 气液固微型流化床的气液传质系数[J]. 化工学报, 2022, 73(8): 3529-3540.
[13]	王悦琳, 晁伟, 蓝晓程, 莫志朋, 佟淑环, 王铁峰. 合成气生物发酵法制乙醇的研究进展[J]. 化工学报, 2022, 73(8): 3448-3460.
[14]	刘振宇. 煤地下气化低效的化学反应工程根源：滞留层及通道中的传质与反应[J]. 化工学报, 2022, 73(8): 3299-3306.
[15]	魏琳, 郭剑, 廖梓豪, Dafalla Ahmed Mohmed, 蒋方明. 空气流量对空冷燃料电池电堆性能的影响研究[J]. 化工学报, 2022, 73(7): 3222-3231.