超重机内多孔板填料上气液流场的计算流体动力学模拟  

Computational Fluid Dynamics Simulation of Gas-Liquid Flow Field on Perforated Plate Packing in Higee

作　　者：栗秀萍[1,2] 王新成[1,2] 李俊妮[1,2] 刘有智[1,2] 

机构地区：[1]中北大学化工与环境学院,山西太原030051 [2]山西省超重力化工工程技术研究中心,山西太原030051

出　　处：《石油化工》2013年第12期1361-1366,共6页Petrochemical Technology

基　　金：山西省高校开发项目(20091127);中北大学校基金项目(201105)

摘　　要：采用Fluent软件对填料内径65 mm、外径250mm的超重机内多孔板填料上的气液流场进行模拟研究.模拟结果表明,填料上的液体速度场分布不均匀;填料转速对液体的切向速度场有影响,液体入口速度对径向速度场有影响;填料上的气体静压力场分布很有规律;填料转速对气体干床压降的影响很小,气体流量对干床压降的影响较为明显;当填料转速为0 ～1 000 r/min、液体入口速度为0.3～ 4.0 m/s时,液滴在填料上的运动轨迹呈螺旋线型,停留时间为0.10～ 0.94 s,运动路程为0.13～ 0.45 m;当气体流量为22.8～ 132.3 m3/h、填料转速为0～1 000 r/min时,干床压降为7～1 844 Pa.Gas-liquid flow field on perforated plate packing in higee with inside diameter of 65 mm and external diameter of 250 mm was simulated by Fluent software.The simulation results showed that,the velocity distribution of the liquid flow field on the packing was not uniform; the rotating speed of the packing and the inlet velocity of liquid had effects on the liquid tangential velocity field and radial velocity field,respectively; the static gas pressure field distribution on the packing was quite regular; and the rotating speed had a little effect on the dry bed pressure drop and the gas flow rate had an apparent effect on the dry bed pressure drop.Under the conditions of the rotating speed of 0-1 000 r/min and liquid inlet velocity of 0.3-4.0 m/s,the liquid trajectory was spiral line,the liquid residence time on the packing was in the range of 0.10-0.94 s and the motion distance was in the range of 0.13-0.45 m.The dry bed pressure drop of gas was 7-1 844 Pa when the gas flow rate and the rotating speed were in the ranges of 22.8-132.3 m3/h and 0-1 000 r/min,respectively.

关 键 词：超重机 多孔板填料 气液流场 计算流体动力学模拟 

分 类 号：TQ053.5[化学工程]