文献类型：期刊文献

英文题名：A 2D Continuum Model Based on Particle-Resolved CFD for Packed-Bed Reactors

作者：Weng, Junqi[1];Wen, Song[2];Shu, Zhongming[1];Jiang, Jie[2];Ye, Guanghua[1];Zhou, Xinggui[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]SINOPEC Res Inst Safety Engn Co Ltd, Qingdao 266000, Peoples R China

年份：2025

卷号：64

期号：16

起止页码：8516

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20251718286348);WOS:【SCI-EXPANDED(收录号:WOS:001467574900001)】；

基金：This work was financially supported by the National Key R&D Program of China (2023YFB4104502), and the National Natural Science Foundation of China (22378115).

语种：英文

外文关键词：Mineral wool - Pebble bed modular reactors - Pelletizing - Sintering - Supersaturation - Thermal modeling

摘要：Classical 2D continuum models often fail to accurately predict temperature distributions in packed bed reactors due to their reliance on empirical correlations and simplified assumptions regarding the bed structure. This work develops an improved 2D continuum model that utilizes particle-resolved computational fluid dynamics (PRCFD) simulations to determine the spatially distributed effective thermal conductivity. This model addresses the inaccuracies of classical 2D continuum models and the high computational cost of the PRCFD model. The proposed 2D continuum model is highly accurate, as demonstrated by comparisons with classical 2D continuum models in predicting radial and axial temperature profiles. Furthermore, the accuracy of the proposed model is further improved by using the sintered metal fiber method to calculate the effective thermal conductivity (2D-PW-SMF). The 2D-PW-SMF model shows excellent adaptability, yielding precise temperature predictions under various packing heights, tube-to-pellet diameter ratios, pellet shapes, inlet velocities, and temperature zones. The accuracy of the 2D-PW-SMF model is also examined using a dry reforming of methane reaction, demonstrating its great feasibility in industrial applications. This work provides a powerful and efficient tool for the design and optimization of industrial packed bed reactors.