Actively homogenizing fluid distribution and slug length of liquid-liquid segmented flow in parallelized microchannels

被引：7

作者：

Arsenjuk, Linda ^{[1
]}

von Vietinghoff, Niclas ^{[1
]}

Gladius, Anoj Winston ^{[1
]}

Agar, David W. ^{[1
]}

机构：

[1] Tech Univ Dortmund, Dept Biochem & Chem Engn, Lab Chem React Engn, Dortmund, Germany

来源：

CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION | 2020年 / 156卷

关键词：

Numbering-up; Biphasic flow; Control strategy; Experimental; Slug length; Fluid distribution; Micro reaction technology; GAS-LIQUID; NUMBERING-UP; MASS-TRANSFER; SCALE-UP; DIRECT FLUORINATION; ELEMENTAL FLUORINE; DESIGN; MICROREACTOR; MICRO; CHANNELS;

D O I：

10.1016/j.cep.2020.108061

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Liquid-liquid segmented flow offers the unique characteristics of high heat and mass transfer combined with a narrow residence time distribution and thus shows great potential in process intensification of biphasic applications. Capacity increase of this technology can only be achieved by numbering-up, if scale-related advantages are to be preserved. This implies homogeneous residence times and volume flows in all parallel channels. Conventionally this is achieved by static fluid distribution concepts with high pressure drops. This contribution develops a microfluidic valve based on temperature-controlled viscosity adjustments. It can be used to actively compensate for manufacturing tolerances in parallelized micro reactors and thus requires a lower pressure drop than static distribution concepts to achieve a homogeneous fluid distribution. The distributor concept is combined with sensors and actuators for flow patterns and an automated parallelization concept for homogenizing flow patterns of liquid-liquid slug flows in micro channels is presented.

引用

页数：16

共 56 条

[1] Faster multiple emulsification with drop splitting
Abate, Adam R.
Weitz, David A.
[J]. LAB ON A CHIP, 2011, 11 (11) : 1911 - 1915
[2] Bubbles velocity, Taylor circulation rate and mass transfer model for slug flow in milli- and microchannels
Abiev, R. Sh.
[J]. CHEMICAL ENGINEERING JOURNAL, 2013, 227 : 66 - 79
[3] Production of arrays of chemically distinct nanolitre plugs via repeated splitting in microfluidic devices
Adamson, David N.
Mustafi, Debarshi
Zhang, John X. J.
Zheng, Bo
Ismagilov, Rustem F.
[J]. LAB ON A CHIP, 2006, 6 (09) : 1178 - 1186
[4] Heck reactions using segmented flow conditions
Ahmed-Omer, Batoul
Barrow, David A.
Wirth, Thomas
[J]. TETRAHEDRON LETTERS, 2009, 50 (26) : 3352 - 3355
[5] Numbered-up gas-liquid micro/milli channels reactor with modular flow distributor
Al-Rawashdeh, M.
Yu, F.
Nijhuis, T. A.
Rebrov, E. V.
Hessel, V.
Schouten, J. C.
[J]. CHEMICAL ENGINEERING JOURNAL, 2012, 207 : 645 - 655
[6] Design criteria for a barrier-based gas-liquid flow distributor for parallel microchannels
Al-Rawashdeh, M.
Fluitsma, L. J. M.
Nijhuis, T. A.
Rebrov, E. V.
Hessel, V.
Schouten, J. C.
[J]. CHEMICAL ENGINEERING JOURNAL, 2012, 181 : 549 - 556
[7] Flow distribution in different microreactor scale-out geometries and the effect of manufacturing tolerances and channel blockage
Amador, C
Gavriilidis, A
Angeli, P
[J]. CHEMICAL ENGINEERING JOURNAL, 2004, 101 (1-3) : 379 - 390
[8] Andrade END, 1934, PHILOS MAG, V17, P497
[9] Novel, Cost-Effective Measurement and Control System for Numbering-Up of Reactive Plug Flow in Microchannels
Antweiler, Nicolai
Gatberg, Sascha
Franzke, Joachim
Agar, David William
[J]. CHEMIE INGENIEUR TECHNIK, 2015, 87 (09) : 1221 - 1229
[10] A device for continuous and flexible adjustment of liquid-liquid slug size in micro-channels
Arsenjuk, Linda
Asshoff, Moritz
Kleinheider, Johannes
Agar, David W.
[J]. JOURNAL OF FLOW CHEMISTRY, 2020, 10 (02) : 409 - 422

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