Void fraction and pressure drop of gas-liquid two-phase flow accompanied with chemical absorption in microchannel

doi:10.3969/j.issn.0438-1157.2013.09.014

CIESC Journal ›› 2013, Vol. 64 ›› Issue (9): 3175-3181.DOI: 10.3969/j.issn.0438-1157.2013.09.014

Previous Articles Next Articles

Void fraction and pressure drop of gas-liquid two-phase flow accompanied with chemical absorption in microchannel

LI Chunfang¹, ZHU Chunying¹, FU Taotao¹, GAO Xiqun², MA Youguang¹, LIU Dongzhi¹

1. State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;
2. Yifang Industry Company, Liaoyang Petrochemical Fiber Company, Liaoyang 111003, Liaoning, China

Received:2013-01-25 Revised:2013-03-21 Online:2013-09-05 Published:2013-09-05
Supported by:
supported by the National Natural Science Foundation of China(21276175,21106093).

微通道内伴有化学吸收气液两相流的空隙率与压力降

李春芳¹, 朱春英¹, 付涛涛¹, 高习群², 马友光¹, 刘东志¹

1. 天津大学化工学院, 化学工程联合国家重点实验室, 天津 300072;
2. 辽阳石油化纤公司亿方公司, 辽宁辽阳 111003

通讯作者: 马友光
作者简介:李春芳(1988- ),女,硕士研究生。
基金资助:
国家自然科学基金项目(21276175,21106093)。

Abstract

Abstract: Void fraction and pressure drop of gas-liquid two-phase flow in microchannel have remarkable influence on performance of mass and heat transfer,and also are important design parameters of microreactor.A high speed camera and a pressure measuring system were used to investigate void fraction and pressure drop of CO₂ chemical absorption by monoethanolamine(MEA)aqueous solution.The effects of gas/liquid flow rate and chemical reaction rate were studied under Taylor flow.Experimental results showed that,for a given liquid phase flow rate,both void fraction and pressure drop increased with increasing gas phase flow rate,and void fraction decreased while the pressure drop increased with increasing chemical reaction rate.For a given gas flow rate,void fraction decreased while pressure drop increased with increasing liquid phase flow rate and chemical reaction rate.Two semi-theoretical models were proposed for predicting void fraction and pressure drop of gas-liquid two-phase flow accompanied with chemical absorption in microchannel,respectively.The average deviations of the models were 15.79% and 11.12% respectively for void fraction and pressure drop,showing good prediction.

Key words: microchannel, void fraction, pressure drop, chemical absorption, gas-liquid two-phase flow

摘要： 微通道内气液两相流空隙率与压力降对微反应器的热质传递性能有显著影响,是微反应器的重要设计参数。采用高速摄像仪和压力测量系统分别对矩形微通道内单乙醇胺水溶液化学吸收CO₂过程的空隙率和压力降进行了研究,考察了弹状流下气液两相流量与化学反应速率对空隙率及压力降的影响。结果表明:当液相流量一定时,微通道内空隙率和压力降均随着气相流量的增大而增大,空隙率随化学反应速率的增大而减小,压力降随化学反应速率的增大而增大;当气相流量一定时,随着液相流量和化学反应速率的上升,微通道内空隙率下降,而压力降上升。提出了微通道内伴有化学吸收的空隙率和压力降的半理论预测模型,模型平均误差分别为15.79%和11.12%,显示了良好的预测性能。

关键词: 微通道, 空隙率, 压力降, 化学吸收, 气液两相流

CLC Number:

TQ021.4

LI Chunfang, ZHU Chunying, FU Taotao, GAO Xiqun, MA Youguang, LIU Dongzhi. Void fraction and pressure drop of gas-liquid two-phase flow accompanied with chemical absorption in microchannel[J]. CIESC Journal, 2013, 64(9): 3175-3181.

李春芳, 朱春英, 付涛涛, 高习群, 马友光, 刘东志. 微通道内伴有化学吸收气液两相流的空隙率与压力降[J]. 化工学报, 2013, 64(9): 3175-3181.

References 21

[1]	Fu T T,Ma Y G, Funfschilling D,Zhu C Y,Li H Z. Squeezing-to-dripping transition for bubble formation in a microfluidic T-junction[J].Chem.Eng.Sci.,2010,65(12):3739-3748
[2]	Wei Lijuan(魏丽娟),Zhu Chunying(朱春英),Fu Taotao(付涛涛),Ma Youguang(马友光).Experimental measurement and correlation of droplet size in T-junction microchannels[J].CIESC Journal(化工学报),2013,64(2):517-523
[3]	Fu Taotao(付涛涛),Hui Xiaorong(惠晓荣),Zhu Chunying(朱春英),Ma Youguang(马友光),Li Huaizhi(李怀志).Formation of dispersed small bubbles in flow-focusing microchannels[J].J.Chem.Eng.Chinese Univ.(高校化学工程学报),2011,25(2):337-340
[4]	Chen Guangwen(陈光文),Zhao Yuchao(赵玉潮),Yue Jun(乐军),Dong Zhengya(董正亚),Cao Haishan(曹海山),Yuan Quan(袁权).Transport phenomena in micro-chemical engineering[J].CIESC Journal(化工学报),2013,64(1):63-74
[5]	Kashid M N,Kowalinski W,Renken A,Baldyga,Kiwi-Minsker L.Analytical method to predict two-phase flow pattern in horizontal micro-capillaries[J].Chem. Eng. Sci.,2012, 74(28):219-232
[6]	Hassanvand A,Hashemabadi S H.Direct numerical simulation of mass transfer from Taylor bubble flow through a circular capillary[J].Int.J.Heat Mass Transfer,2012,55(21/22):5959-5971
[7]	Lockhart R W,Martinelli R C.Proposed correlation of data for isothermal two-phase two-component flow in pipes[J].Chem.Eng.Prog.,1949,45(1):39-48
[8]	Fries D M,Trachsel F,von Rohr P R.Segmented gas-liquid flow characterization in rectangular microchannels[J].Int.J.Multiphase Flow,2008,34(12):1108-1118
[9]	Luo R,Wang L.Liquid velocity distribution in slug flow in a microchannel[J].Microfluid.Nanofluid.,2012,12(1/2/3/4):581-595
[10]	Ma Y G,Ji X Y,Wang D J,Fu T T,Zhu C Y. Measurement and correlation of pressure drop for gas-liquid two-phase flow in rectangular microchannels[J].Chin. J. Chem.Eng.,2010, 18(6):940-947
[11]	Nie Z,Seo M,Xu S,Lewis P C,Mok M,Kumacheva E,Whitesides G M,Garstecki P,Stone H A. Emulsification in a microfluidic flow-focusing device:the effect of the viscosities of the liquids[J].Microfluid. Nanofluid.,2008,5(5):585-594
[12]	Fuerstman M J,Lai A,Thurlow M E,Shevkoplyas S S,Stone H A,Whitesides G M.The pressure drop along rectangular microchannels containing bubbles[J].Microfluid. Nanofluid.,2007,7(11):1479-1489
[13]	Bansal P K,Rupasinghe A S.An homogeneous model for adiabatic capillary tubes[J].Appl.Therm.Eng.,1998,18(3/4):207-219
[14]	Yue J,Chen G W,Yuan Q,Luo L,Gonthier Y. Hydrodynamics and mass transfer characteristics in gas-liquid flow through a rectangular microchannel[J].Chem.Eng.Sci.,2007,62(7):2096-2108
[15]	Warnier M J F,Croon M H J M,Rebrov E V,Schouten J C.Pressure drop of gas-liquid Taylor flow in round micro-capillaries for low to intermediate Reynolds numbers[J].Microfluid.Nanofluid.,2009, 8(1):33-45
[16]	Kreutzer M T,Kapteijn F,Moulijn J A,Kleijn C R,Heiszwolf J J.Inertial and interfacial effects on pressure drop of Taylor flow in capillaries[J].AIChE J.,2005,51(9):2428-2440
[17]	Molla S,Eskin D,Mostowfi F.Pressure drop of slug flow in microchannels with increasing void fraction:experiment and modeling[J].Lab Chip,2011,11(11):1968-1978
[18]	Abiev R S,Lavretsov I V.Intensification of mass transfer from liquid to capillary wall by Taylor vortices in minichannels,bubble velocity and pressure drop[J].Chem.Eng.Sci.,2012,74(28):59-68
[19]	Garimella S,Killion J D,Coleman J W.An experimentally validated model for two-phase pressure drop in the intermittent flow regime for noncircular microchannels[J].J.Fluid.Eng.,2003,125(5):887-894
[20]	Harnett J P,Kostic M.Heat transfer to Newtonian and non-Newtonian fluids in rectangular ducts[J].Adv.Heat Transf.,1989,19(4):247-356
[21]	Ransohoff T C,Radke C J.Laminar flow of a wetting liquid along the corners of a predominantly gas-occupied noncircular pore[J].Colloid Interface Sci.,1988,121(2):392-401

Void fraction and pressure drop of gas-liquid two-phase flow accompanied with chemical absorption in microchannel

微通道内伴有化学吸收气液两相流的空隙率与压力降

PDF (PC)

Knowledge

Cited

Abstract

Cite this article

share this article

References 21

Related Articles 15

Recommended Articles

Metrics

Comments

[1]	He JIANG, Junfei YUAN, Lin WANG, Guyu XING. Experimental study on the effect of flow sharing cavity structure on phase change flow characteristics in microchannels [J]. CIESC Journal, 2023, 74(S1): 235-244.
[2]	Wenzhu LIU, Heming YUN, Baoxue WANG, Mingzhe HU, Chonglong ZHONG. Research on topology optimization of microchannel based on field synergy and entransy dissipation [J]. CIESC Journal, 2023, 74(8): 3329-3341.
[3]	Jinming GAO, Yujiao GUO, Chenglin E, Chunxi LU. Study on the separation characteristics of a downstream gas-liquid vortex separator in a closed hood [J]. CIESC Journal, 2023, 74(7): 2957-2966.
[4]	Qichao LIU, Yunlong ZHOU, Cong CHEN. Analysis and calculation of void fraction of gas-liquid two-phase flow in vertical riser under fluctuating vibration [J]. CIESC Journal, 2023, 74(6): 2391-2403.
[5]	Lufan JIA, Yiying WANG, Yuman DONG, Qinyuan LI, Xin XIE, Hao YUAN, Tao MENG. Aqueous two-phase system based adherent droplet microfluidics for enhanced enzymatic reaction [J]. CIESC Journal, 2023, 74(3): 1239-1246.
[6]	Xueting ZHANG, Jijiang HU, Jing ZHAO, Bogeng LI. Preparation of high molecular weight polypropylene glycol in microchannel reactor [J]. CIESC Journal, 2023, 74(3): 1343-1351.
[7]	Xingyu YANG, You MA, Chunying ZHU, Taotao FU, Youguang MA. Study on liquid-liquid distribution in comb parallel microchannels [J]. CIESC Journal, 2023, 74(2): 698-706.
[8]	Xingyu XIANG, Zhongdong WANG, Yanpeng DONG, Shouchuan LI, Chunying ZHU, Youguang MA, Taotao FU. Progress on rheological properties and multiphase flow of yield stress fluids in microchannels [J]. CIESC Journal, 2023, 74(2): 546-558.
[9]	Jianzhao BAI, Zixuan GUO, Dewu WANG, Yan LIU, Ruojin WANG, Meng TANG, Shaofeng ZHANG. Effect of roll on pressure drop in concurrent gas-liquid columns with tridimensional rotational flow sieve tray [J]. CIESC Journal, 2023, 74(2): 707-720.
[10]	Wanyuan HE, Yiyu CHEN, Chunying ZHU, Taotao FU, Xiqun GAO, Youguang MA. Study on gas-liquid mass transfer characteristics in microchannel with array bulges [J]. CIESC Journal, 2023, 74(2): 690-697.
[11]	Lin SHENG, Yu CHANG, Jian DENG, Guangsheng LUO. Formation and flow characteristics of ordered bubble swarm in a step T-junction microchannel [J]. CIESC Journal, 2023, 74(1): 416-427.
[12]	Tong ZHANG, Yang YANG, Dingding YE, Rong CHEN, Xun ZHU, Qiang LIAO. Effect of catalyst distribution on the performance characteristics of microfluidic fuel cell with flow-through anode [J]. CIESC Journal, 2022, 73(9): 4156-4162.
[13]	Qiaoling SU, Junfeng WANG, Wei ZHANG, Shuiqing ZHAN, Tianyi WU. Experimental study on polarization motion characteristics of bubbles in a low conductivity working medium [J]. CIESC Journal, 2022, 73(9): 3861-3869.
[14]	Yuehui HOU, Xuan LIU, Yingjiang LIAN, Mei HAN, Chaoqun YAO, Guangwen CHEN. Synthesis process of trinitrophloroglucinol in an ultrasonic microreactor [J]. CIESC Journal, 2022, 73(8): 3597-3607.
[15]	Yanfang YU, Huanchen LIU, Huibo MENG, Litu LIU, Yu LI, Jianhua WU. Experimental investigation of turbulent dispersion and hydrodynamic behavior of bubble in Lightnin static mixer [J]. CIESC Journal, 2022, 73(8): 3565-3575.