流化床烟气脱硫反应器内气固流场数值模拟与分析  

Analyses and Simulation of Hydrodynamics of Gas and Particles in Fluidized Bed Flue Gas Desulphurization Towers

作　　者：王会宁[1] 丁建亮[1] 

机构地区：[1]北京航天动力研究所,北京100076

出　　处：《节能技术》2014年第4期324-326,332,共4页Energy Conservation Technology

摘　　要：为了更好地了解烟气脱硫塔内气固流场的分布规律,以Fluent软件为计算平台,采用双流体模型对脱硫塔内气固流动进行数值模拟研究,得到了塔体内气体和颗粒相的速度以及浓度场分布。研究发现在喉口区域形成低速流动区,且沿塔体高度低速流动区逐渐减小。与单侧进气方式相比,采用双侧进口布置,可以减轻气流对低速流动区域的影响,改善塔体内气固两相流场分布。To obtain fundamental knowledge of flow behaviors of gas and solids phases in the fluidized bed flue gas desulphurization tower,simulations are carried out by means of two-fluid model with Fluent commercial code.The distributions of velocity and concentration are predicted.The results show that the zone with low velocity is formed near the throat of the tower.The range of low velocity zone is reduced with the increase of height of tower.Compared with one-side inlet structure,two-side inlet will reduce the effect of inlet arrangement on low velocity zone,and improve hydrodynamics in the fluidized bed flue gas desulphurization tower.

关 键 词：脱硫反应塔 流化床 气固流场 数值模拟 双流体模型 

分 类 号：TK229.66[动力工程及工程热物理—动力机械及工程]