不同开孔方式的大孔筛板干板压降研究  

Investigation on dry plate pressure drop of sieve plate with big holes opening in different ways

作　　者：高国华[1] 李鑫钢[1,2] 陈建民[3] 李文镇[2] 李洪[1,2] 刘丽艳[2] 

机构地区：[1]天津大学化工学院,天津300072 [2]精馏技术国家工程研究中心,天津300072 [3]中国石化洛阳石化工程公司,河南洛阳471003

出　　处：《现代化工》2010年第S1期1-3,5,共4页Modern Chemical Industry

摘　　要：评价塔设备性能的主要指标之一就是塔板压强降。干板压降是筛板塔总压降的主导部分。本文以降低筛板的干板压降为目标,使用标准k-ε湍流模型,对不同开孔方式的大孔筛板进行了模拟计算,定量地讨论了筛板开孔方式对筛板干板压降的影响效果。模拟结果表明,下锥形筛板不利于降低干板压降,而具有合适锥度的上锥形筛板与普通筛板相比是可以降低干板压降的。经过光滑处理的弧形上锥形筛板虽然对减少结焦反应有利,但在降低干板压降方面没有明显的作用。Total pressure drop is one of the key indicators of the tower equipment performance evaluation.Sieve dry plate pressure drop is the dominant part of the overall pressure drop.In order to reduce the dry plate pressure drop of sieve plate,sieve plate with big holes opening in different ways was simulated using the standard k-ε turbulence model to quantitatively discuss the impact of opening style on the dry plate pressure drop.The simulation results show that lower taper sieve tray is not conductive to reduce the dry plate pressure drop,while the upper taper sieve plate with proper opening degree can provide lower dry plate pressure drop compared with ordinary sieve plate.The upper taper sieve plate after smoothing is beneficial for reducing coking reaction,but there is no significant role in reducing the dry plate pressure drop.

关 键 词：大孔筛板 锥形筛板 标准k-ε湍流模型 干板压降 

分 类 号：TQ053.5[化学工程]