The Hydrodynamic Simulation Characteristics of Droplet Flow of H2SO4/C4 System in a Mini-Channel

IF 1.6 4区 工程技术 Q3 ENGINEERING, CHEMICAL
Yousong Zheng, Chao Chen, Li Lv, Tao Zhang
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引用次数: 0

Abstract

Mini-reactors have the advantages of good transportability, easy operability, low cost, and facile scalability. In the liquid–liquid two-phase system with a large density difference, gravitational force plays a significant role in shaping fluid hydrodynamics in mini-channels. The flow characteristics of the sulfuric acid/C4 hydrocarbon (H2SO4/C4) system in a mini-channel were studied via computational fluid dynamics model under different flow directions to illustrate the gravity effect. The results show that vertical downward direction is more beneficial for forming C4 droplets. The C4 droplets display M-shaped axial velocity, vortex-driven interface renewal, and a wriggling motion with periodic shape change. The interface deformation and disturbance during the movement can intensify mass transfer of acid–hydrocarbon two-phase system significantly. These findings deepen the fundamental understanding of gravity effect on multiphase flows in mini-scale devices.

Abstract Image

微型通道中H2SO4/C4体系液滴流动的流体动力学模拟特性
小型反应器具有可移植性好、易操作、成本低、易于扩展等优点。在密度差较大的液-液两相体系中,重力对微通道流体力学的塑造起着重要作用。通过计算流体动力学模型研究了硫酸/C4烃(H2SO4/C4)体系在不同流动方向下的流动特性,以说明重力效应。结果表明,垂直向下的方向更有利于C4液滴的形成。C4液滴表现为m型轴向速度,涡旋驱动界面更新,具有周期性形状变化的蠕动运动。运动过程中界面的变形和扰动会显著加剧酸烃两相体系的传质。这些发现加深了对微型装置中多相流重力效应的基本认识。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Chemical Engineering & Technology
Chemical Engineering & Technology 工程技术-工程:化工
CiteScore
3.80
自引率
4.80%
发文量
315
审稿时长
5.5 months
期刊介绍: This is the journal for chemical engineers looking for first-hand information in all areas of chemical and process engineering. Chemical Engineering & Technology is: Competent with contributions written and refereed by outstanding professionals from around the world. Essential because it is an international forum for the exchange of ideas and experiences. Topical because its articles treat the very latest developments in the field.
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