PV型旋风分离器的分离性能改进实验和分析(Ⅰ)——环形空间  

Experimental Analysis for PVTM cyclone performance improvement(Ⅰ)——circular space

作　　者：徐俊[1] 秦新潮[1] 万古军[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,北京市102249

出　　处：《炼油技术与工程》2009年第10期33-36,共4页Petroleum Refinery Engineering

基　　金：国家重点基础研究发展规划973项目(G2005CB22120103);国家自然科学基金(20876170)

摘　　要：针对PV型旋风分离器环形空间存在的顶灰环问题,从实验和流场两个方面探讨了顶灰环产生的机理和形成的条件,同时进行了有关顶灰环对旋风分离器效率影响的分离性能实验。实验结果和流场分析表明,顶灰环产生于旋风分离器环形空间的二次涡流,顶灰环的存在导致了颗粒向内旋流的扩散和逃逸,造成旋风分离器的效率下降,最后提出了抑制顶灰环对旋风分离器分离效率影响的改进方向。The formation mechanism and conditions for upper dust ring in the circular space of PVTM cyclone separator are studied based upon experiment and flow field. In addition, experiments have been conducted to analyze the impact of upper dust ring on cyclone separation performance. The experiment results and flow field analysis show that the formation of upper dust ring is result of secondary vortex in the circular space, and the formation of upper dust ring leads to particle diffusion and particle escape, which reduces the cyclone separation efficiency. The improvement measures for minimizing upper dust ring＇ s impact on cyclone separation performance are proposed.

关 键 词：PV型旋风分离器 分离性能 环形空间 顶灰环 改进 

分 类 号：TQ051.8[化学工程]