膜科学与技术

位置：首页 >> 期刊内容阅读

CFD模拟优化多通道电催化膜反应器设计

作者：韩静，王晴晴，葛晓龙，王虹

单位：天津工业大学材料科学与工程学院, 分离膜与膜过程国家重点实验室, 分离膜科学与技术国际联合研究中心

关键词：平板多通道炭膜；电催化膜反应器；流体力学； DMAc废水

DOI号： 10.16159/j.cnki.issn1007-8924.2025.01.012

分类号： TQ028

出版年,卷(期):页码： 2025,45(1):108-118

摘要：

以平板多通道炭膜为电极，直流稳压电源提供电流，蠕动泵提供分离动力，构建电催化膜反应器（ECMR）.利用COMSOL Multiphysics 5.6对ECMR进行几何建模，模拟反应器内部流体力学分布，研究几何结构对流场分布的影响，并结合水力特性参数对其进行评价.结果表明，ECMR进水方式为平行于平板多通道炭膜、出水方式为单端出水时性能最佳，且经过示踪剂实验计算得到ECMR的死区容积率由18.86%降低到8.51%.对比优化前与优化后的ECMR的传质以及降解N, N-二甲基乙酰胺（DMAc）的效果，ECMR的传质系数由1.39×10-4 m/s增加到1.48×10-4 m/s，扩散系数由1.307 4×10-3 cm2/s增加到1.473×10-3 cm2/s，同时对质量浓度100 mg/L DMAc的去除率提高了14.5%，COD去除率提升了9%.以上结果表明ECMR的几何结构优化能够提升水处理性能,增强传质，在废水处理领域具有巨大的应用潜力.

In this paper, an electrocatalytic membrane reactor (ECMR) was constructed using a flat multi-channel carbon membrane as electrodes, a DC regulated power supply to provide current and a peristaltic pump to provide separation power. COMSOL Multiphysics 5.6 was used to geometrically model the ECMR, simulate the hydrodynamic distribution inside the reactor, study the effect of the geometric structure on the distribution of the flow field, and evaluate it in combination with the parameters of hydraulic properties. The results indicated that the best performance was achieved when the ECMR inlet was parallel to the flat multi-channel carbon membrane and the outlet was single-ended, and the dead zone volume of ECMR was reduced from 18.86% to 8.51% as calculated from the tracer experiments. Comparing the mass transfer and degradation of N, N-dimethylacetamide (DMAc) by ECMR before and after optimization, the diffusion coefficient of ECMR was increased from 1.307 4×10-3 cm2/s to 1.473×10-3 cm2/s. Meanwhile, the removal of 100 mg/L DMAc was increased by 14.5% and COD removal by 9%. The above of results indicated that the geometry optimization of ECMR can enhance the water treatment performance and mass transfer, which has great potential for application in the field of wastewater treatment.

基金项目：

国家重点研发计划项目（2020YFA0211002）

作者简介：

韩静（1997-），女，陕西西安人，硕士生，从事电催化膜反应器CFD优化与废水处理.

参考文献：

[1]Yang Y, Li J X, Wang H, et al. An electrocatalytic membrane reactor with self-cleaning function for industrial wastewater treatment[J]. Angew Chem Int Ed, 2011, 50(9): 2148.
[2]Chen Z, Wang H, Ma X, et al. Flowthrough electrochemical membrane reactor with a self-supported carbon membrane electrode for highly efficient synthesis of hydrogen peroxide[J]. ACS Appl Mater Interfaces, 2023, 15(36): 42460-42469.
[3]Zhang Y, Qi Y, Yin Z, et al. Nano-V2O5/Ti porous membrane electrode with enhanced electrochemical activity for the high-efficiency oxidation of cyclohexane[J]. Green Chem, 2018, 20(17): 3944-3953.
[4]Chung T. Computational fluid dynamics[M]//London: Cambridge University Press, 2002: 82.
[5]Günther A, Khan S A, Thalmann M, et al. Transport and reaction in microscale segmented gas-liquid flow[J]. Lab Chip, 2004, 4(4): 278-286.
[6]Alhengari S. Process intensification: A study of micromixing and residence time distribution characteristics in the spinning disc reactor[D]. Newcastle Upon Tyne: Newcastle University, 2012.
[7]Pasaogullari U, Wang C Y. Computational fluid dynamics modeling of solid oxide fuel cells[J]. ECS Proc Vol, 2003, 2003(1): 1403.
[8]Norton T, Sun D W, Grant J, et al. Applications of computational fluid dynamics (CFD) in the modelling and design of ventilation systems in the agricultural industry: A review[J]. Bioresour Technol, 2007, 98(12): 2386-2414.
[9]Wei X, Wang H, Yin Z, et al. Tubular electrocatalytic membrane reactor for alcohol oxidation: CFD simulation and experiment[J]. Chin J Chem Eng,2017,25(1):18-25.
[10]Huang L, Li D, Liu J, et al. CFD simulation of mass transfer in electrochemical reactor with mesh cathode for higher phenol degradation[J]. Chemosphere, 2021, 262: 127626.
[11]Selinsek M, Pashkova A, Dittmeyer R. Numerical analysis of mass transport effects on the performance of a tubular catalytic membrane contactor for direct synthesis of hydrogen peroxide[J]. Catal Today, 2015, 248: 101-107.
[12]Abejón R, Gijiu C, Belleville M, et al. Simulation and analysis of the performance of tubular enzymatic membrane reactors under different configurations, kinetics and mass transport conditions[J]. J Membr Sci, 2015, 473: 189-200.
[13]Lin W C, Shao R P, Wang X M, et al. Impacts of non-uniform filament feed spacers characteristics on the hydraulic and anti-fouling performances in the spacer-filled membrane channels: Experiment and numerical simulation[J]. Water Res, 2020, 185: 116251.
[14]周相府,聂登攀,吴怡逸,等.无机陶瓷膜管内部气流场的数值模拟[J].膜科学与技术,2021,41(2):110-116.
[15]朱双戎,朱孟府,邓橙,等.小型电催化膜组件的结构设计及流场仿真分析[J].医疗卫生装备,2021,42(12):29-32.
[16]朱炳辰. 化学反应工程[M]//北京：化学工业出版社，2012: 86.
[17]熊鸽, 王虹, 惠洪森, 等. 活性炭基微孔炭膜制备及电化学性能[J].膜科学与技术, 2019, 39(5): 37-44.
[18]潘宗林, 杨佳伟, 李琳, 等. 造孔剂对煤基管状炭膜的结构和性能影响 [J].膜科学与技术, 2019, 39(5): 23-29.
[19]Levenspiel O. Chemical reaction engineering[M]// New York: John Wiley & Sons, 1998:45.
[20]郭静李, 马华年,王冬云,等. ABR反应器的性能及水力特性研究[J].中国给水排水, 1997(4): 17-20.
[21]Wang J, Li T, Zhou M, et al. Characterization of hydrodynamics and mass transfer in two types of tubular electrochemical reactors[J]. Electrochim Acta, 2015, 173: 698-704.
[22]Ibrahim D S, Veerabahu C, Palani R, et al. Flow dynamics and mass transfer studies in a tubular electrochemical reactor with a mesh electrode[J]. Comput Fluids, 2013, 73: 97-103.
[23]Santos J, Geraldes V, Velizarov S, et al. Characterization of fluid dynamics and mass-transfer in an electrochemical oxidation cell by experimental and CFD studies[J]. Chem Eng J, 2010, 157(2/3): 379-392.
[24]Duan X, Ma F, Yuan Z, et al. Electrochemical degradation of phenol in aqueous solution using PbO2 anode[J]. J Taiwan Inst Chem Eng, 2013, 44(1): 95-102.
[25]Lira-Teco J E, Rivera F, Farias M O, et al. Comparison of experimental and CFD mass transfer coefficient of three commercial turbulence promoters[J]. Fuel, 2016, 167: 337-346.
[26]Li J, Li J, Feng H, et al. A facile one-step in situ synthesis of copper nanostructures/graphene oxide as an efficient electrocatalyst for 2-naphthol sensing application[J]. Electrochim Acta, 2015, 153: 352-360.

服务与反馈：

【文章下载】【加入收藏】

《膜科学与技术》编辑部地址：北京市朝阳区北三环东路19号蓝星大厦邮政编码：100029 电话：010-64426130/64433466 传真：010-80485372邮箱：mkxyjs@163.com