摘要
针对PV型旋风分离器的涡壳式进口结构,从实验方面进行了改进探讨。由于受到PV型旋风分离器蜗壳进口水平底板的约束,底板上旋转气流中的颗粒灰带在入口处与入口气流相汇,灰带中的颗粒被卷吸进入升气管的短路流,导致颗粒的逃逸。为此提出将进口水平底板改成螺旋式斜底板,并进行了分离性能的对比实验和分析。实验结果表明,螺旋式斜底板进口结构避免了器壁上的旋转灰带与进口气流的交汇和碰撞,抑制了颗粒的逃逸,有助于提高旋风分离器的分离性能。
The entrance structure of PVTM cyclone was improved by experimental study. Under the effect of the horizontal plate in the volute entrance, the particles on the wall form a dust band and revolve horizontally. This dust band is gathered together with inlet flow at the entrance region. The particles in the dust band can be entrained into the exit tube to escape from it. Therefore, the horizontal plate was changed into the helix slope plate and the comparison experiment was made. The experiment result shows that the helix slope plate makes the dust brand revolve downward and restrains the particles＇ escape. The improved entrance structure is helpful for the improvement of separation performance of PVTM cyclone.
出处
《炼油技术与工程》
CAS
2009年第11期34-36,共3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)
关键词
PV型旋风分离器
分离性能
进口结构
改进
PVTM cyclone, separation performance, entrance structure, improvement
