3D coarse-grained DPM simulation of the MIP reaction-regeneration loop  

作　　者：Yanhao Ye Shuai Zhang Ji Xu Wei Ge 

机构地区：[1]State Key Laboratory of Mesoscience and Engineering(formerly State Key Laboratory of Multiphase Complex Systems),Institute of Process Engineering,Chinese Academy of Sciences,Beijing,100190,China [2]School of Chemical Engineering,University of Chinese Academy of Sciences,Beijing,100049,China

出　　处：《Particuology》2024年第6期57-66,共10页颗粒学报（英文版）

基　　金：supported by the National Key Research and Development Program of China(grant No.2020YFC1908805);the National Natural Science Foundation of China(grant Nos.22293024 and 22078330);the Youth Innovation Promotion Association,Chinese Academy of Sciences(grant No.2019050).

摘　　要：The reactor-regenerator loop is the core facility of the maximizing iso-paraffin(MIP)process.Although the discrete particle method(DPM)simulation can provide detailed information at the particle scale,it has been unable to simulate such a complex loop system due to limitations of coarse-grained(CG)models,computing software,and hardware.In this study,a newly proposed soft-shell CG-DPM model with a CG ratio of up to 800 is used to simulate a 3.5 Mt/a industrial-scale MIP reactor-regenerator loop.The solid fraction distribution obtained is found to agree well with in-situ measurements.Hydrodynamic properties including the distribution of solid fraction,gas and solid velocity,standard derivation of solid fraction with time,temporal distribution of the flow field,and particle residence time distribution are measured in the simulation,which are meaningful to better design and operate such systems in the future.

关 键 词：Discrete particle method Coarse-grain Maximizing iso-paraffins Full-loop Reaction-regeneration system 

分 类 号：O6[理学—化学]