CFD Studies on Efficacy of Flow Modulation in a Hydrotreating Trickle-Bed Reactor

被引：2

作者：

Dasgupta, Soumendu ^{[1
]}

Atta, Arnab ^{[1
]}

机构：

[1] Indian Inst Technol Kharagpur, Multiscale Computat Fluid Dynam mCFD Lab, Dept Chem Engn, Kharagpur 721302, W Bengal, India

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2019年 / 58卷 / 39期

关键词：

PROCESS INTENSIFICATION; LIQUID DISTRIBUTION; CYCLIC OPERATION; MULTIPHASE FLOW; FLUID-DYNAMICS; PRESSURE-DROP; SIMULATION; GAS; HOLDUP; ENHANCEMENT;

D O I：

10.1021/acs.iecr.9b02632

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Hydrodesulfurization (HDS), a pivotal process for sulfur removal that is essential in deep processing of crude oil, is typically carried out in steady-state trickle-bed reactors (TBRs). Being familiar with such an operation, researchers are now investigating the benefits of flow modulation strategies in TBRs for improved conversion efficiency. In this work, a computational fluid dynamics model of a hydrotreating TBR is developed to delineate the efficacy of flow modulation in a HDS reaction system. Fast and slow modes of on-off and min- max flow modulations with different split ratios are compared with time-averaged continuous operation for reaction conversion. On-off and min-max flows resulted in relative improvement in conversion by 36 and 19%, respectively. Combined analysis of reaction conversion improvement along with an oscillating pressure drop revealed the efficacy of fast mode on-off strategy in maximum conversion of the considered system at the expense of lower pressure drop undulations.

引用

页码：18073 / 18083

页数：11

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