大型环盘折流板反应器壳程流动模拟及结构设计  

Numerical simulation of fluid flow and structural design of large reactor with ring and disk baffle

作　　者：高章帆 宋尧 王智拓 王俊夫 刘彭华 刘维红 GAO Zhangfan;SONG Yao;WANG Zhituo;WANG Junfu;LIU Penghua;LIU Weihong(Chengda Engineering Corporation of China,Chengdu 610000,China)

机构地区：[1]中国成达工程有限公司,成都610000

出　　处：《压力容器》2024年第1期63-69,共7页Pressure Vessel Technology

摘　　要：环盘结构是大型换热式反应器中最常用的壳程导流结构之一,针对环盘折流板结构参数的选择影响反应器壳程流场特性的情况,分析了环盘型折流板的结构特性,发现大型反应器折流板相对板距d*的取值通常为0.15~0.20;在此基础上建立了不同相对缺口面积S^(*)条件下的模型进行流场模拟;详细分析折流板结构参数对壳程流体流动形态、停留时间分布和压降特性的影响,综合考虑后提出S^(*)=0.15~0.30是大型反应器相对缺口面积的合理设计范围;最后,根据现有研究中单弓型折流板换热器的数据,在模拟的结构条件范围内对比了环盘和单弓结构的性能,为工程设计提供指导。Ring and disc baffle is one of the most commonly used flow diversion structures in large heat transfer reactors.The selection of structure parameters of ring and disc baffle affects the flow field characteristics of the reactor shell side.The structure characteristics of the large ring and disc baffle reactor were analyzed,it is found that 0.15~0.20 is the reasonable design range of the baffle d*in the large reactor.On this basis,the models under different relative gap area S^(*)were established to simulate the flow field.The influences of the baffle structure parameters on the flow pattern,residence time distribution and pressure drop characteristics were analyzed comprehensively,then it was suggested that 0.15~0.30 was a reasonable design range for the baffle structure parameter S^(*).Finally,according to the data of the segmental-baffle heat exchanger,the performance of the ring-disc and the segmental structure was compared in the range of simulated structural conditions,which provides guidance for engineering design.

关 键 词：换热式反应器 环盘折流板 流动形态 停留时间分布 压降 

分 类 号：TH122[机械工程—机械设计及理论] TQ052.6[化学工程]