基于CFD的集合管盲端法兰防漩涡结构优化  

Optimization of Anti-vortex Structure of Manifold End Flange Based on CFD

作　　者：陈志静[1] 郭福平[1] 

机构地区：[1]广东石油化工学院

出　　处：《石油机械》2015年第6期123-127,共5页China Petroleum Machinery

基　　金：中国石油化工股份有限公司茂名分公司科技发展部项目"重整‘四合一’炉出口集合管腐蚀研究及结构优化"(31750000-14-ZC0607-0012)

摘　　要：当催化重整装置中加热炉的处理量增加至168 t/h时,其集合管盲端法兰内右下侧距平盖100 mm横截面(J面)发生了类似冲刷的腐蚀,影响了装置的连续生产。为此,运用CFD软件Fluent模拟加热炉集合管内介质流动情况。模拟结果表明,在集合管盲端法兰内侧右下方部位的漩涡流强度剧烈,漩涡流强度随介质处理量的增大而增加,当处理量为168 t/h时,涡量值为240 s-1,切向速度达到16 m/s。为了改善集合管盲端的漩涡流,对集合管盲端法兰盖结构进行优化设计,并用CFD软件进行数值模拟,结果表明优化后的平盖结构具有很好的防漩涡作用。最后针对优化的平盖结构对炉管流量分配的影响进行研究,结果表明优化的防漩涡结构不会影响管系的流量分配。When the treatment capacity of the heating furnace in catalytic reforming unit is increased to 168 t/ h, the cross section （J section）, which is 100 mm right side below the manifold blind end flange will cause ero- sion similar corrosion and result in impact on the continuous operation of the catalytic reforming device. The Fluent, a CFD software, is used to simulate the medium flow in the manifold of heating furnace. Simulation results show that the vortex flow below the right side of the manifold end flange is intensive, and increases with the increase of the medium processing rate. The vortex value will be 240 s^-1 and the tangential velocity will reach 16 m/s when the processing capacity is 168 t/h. The structure of manifold end flange is optimized and numerical simulated to mini- mize the vortex flow in the manifold end. The results show that the optimized structure of flat cover has great anti- vortex effect. The effect of optimized flat cover structure on the furnace tube flow distribution is also been studied, and the results show a unaffected flow distribution.

关 键 词：加热炉 集合管 防漩涡 结构优化 数值模拟 

分 类 号：TE965[石油与天然气工程—石油机械设备]