聚碳酸酯液液分离器进料构件的流体力学模拟

测定了聚碳酸酯(PC)物料电导率随水油相体积比的变化,确定生产中物料为水包油型乳液,即分散相为PC胶液,连续相为水。采用F1uent商用软件对液液分离器内部流场进行了数值模拟,通过得到的分离器内部流线分布和轴向速度标准偏差分布,考察了不同进料口位置、挡板位置以及不同整流构件尺寸对液液分离器内部流场的影响。研究发现,进料口位置为中部,挡板位置距离进料口为50mm,整流构件开孔率为40%,长度为150mm时,分离器内的流场质量最佳,为液液分离器进料构件的进一步优化研究提供了参考。

Fluid dynamics simulation of inlet internals in polycarbonate liquid-liquid separator

Polycarbonate(PC) mixture conductivity was measured with the change of water-oil phase volume ratio,which determined that the PC mixture in real production is oil-in-water emulsion.The dispersed phase is PC glue.The continuous phase is water.Using fluent software, the inner flow field of liquid-liquid separator is numerically simulated.Through the internal streamline distribution and standard deviation distribution of axial speed gained,the effect of different feeding port positions,feeding baffle positions,and rectifier component size on the inner flow field of liquid-liquid separator is investigated.The research indicated that the optimal flow field quality of the separator is gained under feeding port position,middle;the distance between baffle and feeding port,50 mm;the rectifier internal opening rate,40%;the rectifier internal length,150 mm.This work provided reference for further optimization research on inlet internals of liquid-liquid separator.