指状分离器段塞流液塞耗散效果研究

Study on slug dissipation performance of finger-type separator

为确定一种能有效耗散段塞流液塞的指状分离器结构,在使用包含液塞发生器的气液两相流试验系统的基础上,利用电导探针数采程序和摄像分析技术,试验研究了不同表观气速下各初始长度段塞流液塞在不同指状分离器结构中的耗散过程和耗散效果。结果表明:入口连通气管的结构能分流段塞流液塞,减小液塞动能,有利于液塞耗散;立管加高结构能改善气相顶管流型,提高分离效率,但会增大底管段塞流生成几率;大存储段容积结构能大大减少下倾管和液相底管出现段塞流的可能性;入口连通、立管加高、大存储段容积的指状分离器组合结构能有效处理的液塞范围最大。

In order to determine a finger-type separator structure with high slug dissipation performance,a gas-liquid two-phase flow experimental system including a slug generator was established,and a probes data acquisition system with camera analysis technology were adopted.The dissipation process and dissipation effect of various slugs with different initial lengths in several finger separator structures under different superficial gas velocities were investigated.Results show that the inlet-connected structure splits the slug and reduces the slug kinetic energy,which is beneficial to the slug dissipation.The riser-heightened structure remedies flow pattern in the top gas pipe and further improves the separation efficiency,but slug flow occur easier in the bottom pipe section.The large storage volume structure greatly reduces the possibility of slug flow in the downward inclined pipe and liquid bottom tube.The combination structure of finger separator with connected inlet,heightened riser and large storage volume effectively handles the largest range of slugs.