旋风分离器料腿漏风对压降影响的实验分析  

Experimental Analysis of Dipleg Gas Leakage Effect on Pressure Drop of Cyclone Separator

作　　者：孔文文[1] 严超宇[1] 魏耀东[1] 

机构地区：[1]中国石油大学(北京)重质油国家重点实验室

出　　处：《化工装备技术》2016年第4期1-4,共4页Chemical Equipment Technology

基　　金：国家自然科学基金项目(21176250);中国石油大学(北京)基本科研基金资助项目(2462015YQ0301)

摘　　要：以直径300 mm的旋风分离器为实验对象,考察了在不同入口速度下料腿漏风量对旋风分离器压降的影响,并以此为基础,分析了某现场催化裂化装置旋风分离器压降出现的不稳定波动现象。实验结果表明,旋风分离器下部料腿是一个负压差立管,外部的压力大于料腿内的压力,易产生漏风,从而导致旋风分离器的压降降低。旋风分离器的压降随漏风量增大而降低,入口速度越低漏风量影响的作用就越明显。该旋风分离器的压降波动是由于不稳定的翼阀排料产生的漏风变化造成的。Taking a cyclone separator with the diameter of 300 mm as the experimental subject, the dipleg gas leakage effect on the pressure drop under different inlet velocities are studied. Based on the results, the unstable fluctuations of the pressure drop in an industrial FCCU are analyzed. It shows that the dipleg is the riser with the negative pressure differential so that the gas leakage occurs and the pressure drop decreases when the external pressure exceeds the internal pressure. Moreover, the pressure drop decreases along with the increase of the gas leakage and the effect becomes more evident with the lower inlet velocity. And the variation of the gas leakages due to the discharging of the trickle valve attributes the fluctuations of the pressure drop.

关 键 词：旋风分离器 料腿 翼阀 漏风 压降 入口速度 

分 类 号：TE96[石油与天然气工程—石油机械设备]