船用脱硫塔两相流场特性仿真  

Numerical Analysis of Unsteady Two-Phase Flow Field in Desulfurization Scrubber

作　　者：李学春 郭浩 张钊 LI Xue-chun;GUO Hao;ZHANG Zhao(College of Power and Energy Engineering,Harbin Engineering University,Harbin Heilongjiang 150001,China)

机构地区：[1]哈尔滨工程大学动力与能源工程学院,黑龙江哈尔滨150001

出　　处：《计算机仿真》2023年第3期129-134,共6页Computer Simulation

基　　金：国家自然科学基金(U1906232)。

摘　　要：为研究脱硫塔内部两相流场特性,建立起有效三维模型以及网格模型,并利用计算流体方法对于脱硫塔内气液两相流场进行模拟,重点研究了气相的流场、温度场、压力场以及气液两相的流场、温度场。将烟气和洗涤液分别设定为523k和305k,分析了喷淋前后相关压力、温度场以及喷雾液滴运动和蒸发特性。结果表明:两层喷淋后废气得到有效降温,与液滴接触效果较好,喷雾条件对于废气通道起到较好的整流作用,保持了液滴的充盈度。脱硫塔内部流场分布情况的分析,对于流场优化以及脱硫效率的提高具有指导作用。To study the characteristics of the two-phase flow field in the desulfurization tower,an effective threedimensional model and grid model were established,and the computational fluid method was used to simulate the gas-liquid two-phase flow field in the desulfurization tower to obtain pressure field,gas-liquid two-phase flow field and temperature field result.The flue gas and scrubbing liquid were set to 523k and 305k respectively,and the relevant pressure,temperature field before and after spraying,as well as the movement and evaporation characteristics of spray droplets,were analyzed.The results show that the exhaust gas is effectively cooled afer the two-layer spraying and the contact effect with the droplets is better.The spray conditions have a better rectification effect on the exhaust gas channel,and the fullness of the droplets is maintained.It provides guidance for the optimization of the flow field and the improvement of desulfurization efficiency.

关 键 词：船舶 液滴分布 两相流场 计算流体动力学 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]