多组分合成气强化换热器壳程传热的数值模拟  

Numerical simulation on heat transfer enhancement in shell side of multi-component synthetic gas heat exchanger

作　　者：李彦[1,2] 姜秀民[3] 任建兴[1,2] 吴江[1,2] 

机构地区：[1]上海电力学院能源与机械工程学院,上海200090 [2]上海发电环保工程技术研究中心,上海200090 [3]上海交通大学燃煤污染物减排国家工程实验室,上海200240

出　　处：《热力发电》2013年第10期21-31,共12页Thermal Power Generation

基　　金：国家863高技术基金项目(2007AA05Z247);上海高校青年教师培养资助计划(sdl11008);上海市教委重点学科(第五期)(J51304);上海发电环保工程技术研究中心项目(11dz2281700)~~

摘　　要：采用多孔介质模型对ASPEN软件设计的高压多组分合成气换热器进行了三维数值模拟,分析了不同的几何结构对壳程流体的传热和压降的影响规律。分析结果表明,采用ASPEN软件设计的换热器具有较好的流动和换热特性;多孔介质模型可用于模拟净燃气过热器壳程流体的流动和换热;在其它参数不变情况下换热器折流板的圆缺度由20%减至15%对壳程流体的换热影响不大,但增加了壳程流体的压降。The porous media model was employed to conduct three-dimensional numerical simulation on a high pressure multi-component syngas heat exchanger designed by ASPEN software.The effect of different geometric structures on heat transfer and pressure drop of shell side fluid was investigated.The results showed that,the heat exchanger designed by the ASPEN software had good flow and heat transfer performance;the temperature distribution of the high pressure multi-component syngas at shell side obtained by the porous medium model agreed well with that designed by the ASPEN software;keeping the other parameters as constants and decreasing the segmental orifice degree of the baffle plate in heat exchanger from 20% to 15%had little effect on heat transfer behavior of the shell side fluid,but the pressure drop was increased.

关 键 词：管壳式换热器 多组分合成气 多孔介质 壳程 流速 强化传热 ASPEN软件 

分 类 号：TK124[动力工程及工程热物理—工程热物理]