文献类型：期刊文献

英文题名：Feeding mode transition of coupling internals in plenum dominated by pressure drop

作者：Wang, Lei[1];Xu, Xiao[1];Wang, Junjie[1];Wang, Wei[1];Yang, Haiqiang[1];Yang, Qiang[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2021

卷号：170

起止页码：329

外文期刊名：CHEMICAL ENGINEERING RESEARCH & DESIGN

收录：;EI(收录号：20211810279846);WOS:【SCI-EXPANDED(收录号:WOS:000653768900005)】；

基金：The authors wish to express their sincere gratitude to the National Key R&D Program of China (2018YFC1802704,2018YFC1801904), the National Natural Science Foundationof China (51678238, 51722806, 21908057), the PetroChina Innovation Foundation (2017D-5007-0608), China Postdoctoral Science Foundation (2018M641942), and Shanghai Sailing Program (19YF1411800) for financial support.

语种：英文

外文关键词：Gas-liquid distributor; Feeding mode; Multiphase flow; Pressure drop

摘要：Gas-liquid upflow reactor has extensively been applied in oil hydrogenation. The pilot-scale reactor plays a crucial role in mediating the reaction process. This work provides a gas-liquid feeding internal coupling with a capillary and porous membrane for an upflow reactor. Based on the stability and pressure drop characteristics of capillary and metal sintered porous membrane bubbling, we developed a gas-liquid distribution interior which structurally con-stituted a complex of capillary and a sintered porous membrane. The average gas holdup of the reactor under the feeding gas flow rate of 30-150 ml/min is 0.437%, 0.672%, 1.153%, 1.568%, and 2.508%. The average gas holdup of the four feeding modes from A to D are 1.07715%, 1.69963%, 1.22756%, 1.0569%, respectively, and the gas holdup is the highest in the feeding mode B, which is 1.69963%. This has guiding significance for the selection of the feeding mode in the actual application of the coupling internal. The transform of the reactor feeding mode is dominated by the pressure drop of the coupling internal, and the pressure drop ranges from feed mode A to D are below 0.02, 0.02-0.0348, 0.02214-0.04756, 0.02637-0.05 MPa, respectively. This work verified the plausibility of an improved model for predicting the bubble size and feeding mode, which is beneficial for the precise identifica-tion of gas holdup in a pilot-scale reactor. Thus, the coupling internals will provide highly stable gas and liquid feeding. (c) 2021 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.