低温碳捕集用切流式旋流分离器数值模拟研究

Numerical Simulation Study on Tangential Flow Cyclone Separator for Low-temperature Carbon Capture

为了探究双切流入口式旋流分离器在低温二氧化碳捕集应用下的分离性能,采用RNG k-ε湍流模型和DPM模型对DN 25 mm型双切流入口式旋流分离器内气液两相流场进行模拟分析。结果表明:当入口速度大于0.15 m/s时,对1μm以上液滴分离效率高于95%,总分离效率不低于94%;当入口速度大于0.2 m/s时,分离效率可达到98%以上。相关研究结果可为旋流分离器在低温二氧化碳捕集的实际工程应用提供理论依据。

In order to investigate the separation performance of a dual tangential inlet cyclone separator in low-temperature carbon dioxide capture applications,RNG k-εThe turbulence model and DPM model were adopted to simulate and analyze the gas-liquid two-phase flow field in a DN 25 mm double tangential inlet cyclone separator.The results indicated that when the inlet velocity was greater than 0.15 m/s,for 1μm The separation efficiency of droplets above was higher than 95%,and the total separation efficiency was not less than 94%.When the inlet speed was higher than 0.2 m/s,the separation efficiency could reach over 98%.The relevant research results could provide theoretical basis for the practical engineering application of cyclone separators in low-temperature carbon dioxide capture.