叶片式气液分离器的数值模拟研究

利用计算流体力学方法对叶片式气液分离器内的流场进行数值模拟研究,主要研究气相速度以及旋流叶片的倾角对气液分离器压降以及液滴脱除效果的影响。结果表明:气液分离器压降与气相进口速度的平方呈正比;大直径液滴在气液分离器内呈现“V”型分布,且气相速度以及旋流叶片角度对其影响显著,除雾效果高;小直径液滴在气液分离器内呈现较为均匀的分布,相较于气相速度,旋流叶片角度(15°)更能显著影响其脱除效率。

NUMERICAL SIMULATION OF VANE GAS-LIQUID SEPARATOR

The numerical simulation of the flow field in vane gas-liquid separator was carried out by Computational Fluid Dynamics,and the influences of gas velocity and swirling blade angle on the pressure drop and droplet removal efficiency of gas-liquid separator were studied.The results showed that the pressure drop of gas-liquid separator was proportional to the square of gas inlet velocity.The droplets with relatively large diameter showed a"V"shape distribution in gas-liquid separator and was significantly influenced by gas velocity and swirling blade angle.High demisting efficiency was achieved.The small diameter droplets showed a more uniform distribution in gas-liquid separator.Compared to gas velocity,the 15°swirling blade angle had a more significant effect on the removal efficiency.