摘要：A regenerator is a critical component of an industrial Methanol-to-Olefins (MTO) unit, whose primary function is to recover the catalyst activity by burning off the deposited coke accumulated on catalyst particles within a fluidized bed. This study simulated an industrial MTO regenerator using an Eulerian-Lagrangian Multi-Phase Particle-In-Cell (MP-PIC) model. The simulation considered all the essential internals within the regenerator. Most model parameters, including boundary conditions and the physical properties of gas and solids, were based on industrial data. The simulated bed densities, temperatures, and flue gas composition agreed well with the corresponding industrial data. A wide distribution range of coke content was found in the regenerated MTO catalysts, which includes a considerable proportion of catalyst with excessive coke burning (CC C > 4 wt%). Such a distribution is detrimental to a desired product yield of the MTO process, which is primarily attributed to the wide residence time distribution (RTD) of catalyst particles in the regenerator. Within the MTO regenerator, the coke burning intensity (CBI) was found to be highly axial uneven, with the majority of coke burned in the region near the bottom perforated gas distributor. Due to the arrangement of internals in the dense bed, uneven radial distributions of solid holdup, temperature, and CBI were found in the dense bed of the regenerator. These findings can promote a deeper understanding of the operation of the MTO regenerator and provide useful guidance for its future design optimization. ? 2025 Elsevier B.V.

ISSN号：1385-8947

卷、期、页：卷505

发表日期：2025-02-01

影响因子：0.000000

期刊分区（SCI为中科院分区）：一区

收录情况：SCI（科学引文索引印刷版）,EI（工程索引）,SCIE（科学引文索引网络版）

发表期刊名称：Chemical Engineering Journal

参与作者：Pan, Haitao,Yang, Yanbiao

通讯作者：白士玉,汪显盼,苟荣恒

第一作者：张永民,李舒月

论文类型：期刊论文

论文概要：白士玉,汪显盼,Pan, Haitao,苟荣恒,Yang, Yanbiao,张永民,李舒月，Application of CPFD method in simulation of an industrial MTO regenerator，Chemical Engineering Journal，2025，卷505

论文题目：Application of CPFD method in simulation of an industrial MTO regenerator