Structure optimization of vane type gas-liquid separator
In order to explore the influence of structural parameters on the separation performance of the vane-type gas-liquid separator,the Realizable k-ε turbulence model and DPM model were adopted to optimize the blade structural parameters,and the gas-liquid two-phase flow in the vane-type separator was simulated.The effects of velocity distribution,pressure distribution and structural parameters on separation efficiency and pressure drop were obtained.And the reliability of the simulation was verified through gas-liquid separation experiments.The results show that the DN450 vane type gas-liquid separator designed herein can effectively separate droplets of 40 μm and above when the blade bending angle is 100°,and increasing the parameter has no obvious effect,and has no obvious effect on the pressure drop.When the number of blades is 12,the inclination of blades is 5° and the distribution cone angle of blades is 9°,the separation efficiency of the separator is the highest and the pressure drop is the lowest.When the treatment gas volume is 150 m3/h,the pressure is lower than 50 Pa.For droplets above 30 μm,the separation efficiency can reach more than 90%.Compared with the structure before optimization,the separation efficiency of 30 μm droplets can be increased by up to 60%when the treated gas volume is greater than 90 m3/h;and the separation efficiency of 40 μm droplets can be increased by 29%.The structural pressure drop is basically the same before and after optimization.The research results can provide theoretical basis for further improvement and practical engineering application of vane type gas-liquid separator.
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