摘要
提出了采用数值模拟的方法研究喷嘴角度对脱硫塔内部气液两相流场的影响。由于实际脱硫塔尺寸庞大,给实验研究带来困难且成本很高,在数值模拟平台上,分别模拟了45°、75°和-30°3种喷嘴角度布置下脱硫塔内部速度场、温度场变化以及湍流强度的分布情况。结果表明,在角度为-30°布置时速度场变化不是很剧烈,脱硫塔进出口温差比较理想,湍流强度在脱硫塔底部较大随着塔高的增加缓慢降低,这样有助于气液两相均匀混合,并控制出口烟温,有利于提高脱硫效率。
Numerical simulation was adopted to study the gas-liquid two phase flow fields in a desulphurization tower effect.Because of its big size,it is difficult to carry out experimental study on the practical desulphurization tower and the cost of experiment is very high.In numerical simulation platform,velocity field,temperature field and the distribution of turbulence intensity distribution of 45 degrees,75 degrees,-30 degrees was simulated.The results show that velocity field change of-30 degrees in angle decorated is not very violent.Range of import and export temperature of desulphurization tower is ideal.The turbulent intension at the bottom of desulphurization tower is larger and slows down with the increase of height.This arrangement is good at mixing of gas-liquid two phase flow and controlling the temperature of exports,which is in favor of efficiency of desulfurization.
出处
《环境工程学报》
CAS
CSCD
北大核心
2012年第11期4147-4152,共6页
Chinese Journal of Environmental Engineering
基金
吉林省科技发展计划项目(20100802)
关键词
喷嘴角度
脱硫
气液两相流
数值模拟
nozzle angle
desulfurization
gas-liquid two phase flow
numerical simulation
