期刊论文

Cause Analysis for Tower Body Depression Instability of Naphtha Separating Tower

中文

湖南城市学院学报(自然科学版)

1672-7304

2008

1

1-3

湖南省教育科学“十五”规划立项课题（XJK01CG022）；

本校为第一机构

为了分析石脑油分离塔塔体凹陷失稳的原因,采用ANSYS建立塔体和挡板的有限元模型.从ANSYS的计算结果可以看出,在塔体和挡板的接触处应力最大,且变形最大处位于挡板中间.塔体失稳凹陷的原因是挡板承受石脑油液柱静压,产生大变形,而挡板的变形牵引塔体产生向内部凹陷的作用力,导致塔体塑性屈服后持续受拉失稳.实际应用中应适当提高挡板的刚度或者在塔体外安装加强圈,避免因挡板变形过大而造成塔体凹陷失稳.

The cause for the tower body instability was analyzed with ANSYS finite element model. The simulation result indicates that the maximum stress appears in connection between tower body and baffle, and the maximum deformation exists in middle of baffle. Liquid column static pressure of naphtha makes baffle deformation which drags tower body depressing. To avoid depression of tower body, the stiffness of baffle should be enhan...