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]; Yuan, Weikang[1]

机构：[1] State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China; [2] SINOPEC Research Institute of Safety Engineering Co., Ltd., Qingdao, 266000, China

年份：2024

外文期刊名：SSRN

收录：EI(收录号：20240521143)

语种：英文

外文关键词：High modulus textile fibers - Mineral wool - Packed beds - Pebble bed modular reactors - Sintering - Supersaturation - Temperature distribution

摘要：The performance of packed bed reactors is greatly affected by the reactor temperature distributions, which cannot be well predicted by the classical 2D continuum models. This work develops an improved 2D continuum model, which utilizes particle-resolved computational fluid dynamics (PRCFD) simulations to estimate the spatially distributed effective thermal conductivity. The proposed 2D continuum model is highly accurate, which is proved by comparing with the classical 2D continuum models in predicting radial and axial temperature profiles in the reactor. Meanwhile, 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 good adaptability, yielding precise prediction of reactor temperatures under different packing heights, tube-to-pellet diameter ratios, pellet shapes, inlet velocity magnitudes, and temperature zones. The accuracy of the 2D-PW-SMF model is also examined in the presence of dry reforming of methane reaction, implying its great feasibility in industrial applications. This work provides a powerful and efficient model tool for designing and optimizing industrial packed bed reactors. ? 2024, The Authors. All rights reserved.