化工进展2013，Vol.32Issue(3)：521-526,6.DOI:10.3969/j.issn.1000-6613.2013.03.005
颗粒直径对吸附分离影响的数值模拟
Numerical simulation of the particle diameter on adsorption and separation
摘要
Abstract
A vertical packed bed model of pressure swing adsorption to produce oxygen was established based on the Fluent porous medium model. The porous medium model for single-phase was integrated to gas-solid two-phase coupling model in the User Defined Functions in order to achieve the mass and heat transfer of the adsorption process. The effects of particle diameter on gas pressure, velocity and bed pressure drop were discussed. The concentration and recovery of oxygen were analyzed as well. The analytic results showed that the bed pressure drop and the resistance to jet stream in inlet were decreasing with increasing of particle diameter. Under the same conditions, the concentration and recovery of oxygen could be increased if smaller particles were used. Small particles help to decrease the gas velocity and increase the gas residence in the bed, resulting in better
adsorption and separation consequently.
关键词
填充床/气固两相耦合模型/颗粒直径Key words
packed bed/ gas-solid two phase coupling model/ particle diameter分类
化学化工引用本文复制引用
陈勇,由宏新..颗粒直径对吸附分离影响的数值模拟[J].化工进展,2013,32(3):521-526,6.
