CO_2再生塔导流筒流场数值模拟及结构优选  

Numerical Simulation of Flow Field and Structure Optimization of CO_2 Regenerator

作　　者：耿博[1] 刘双虎[1] 张健[1] 宋文明 

机构地区：[1]东北石油大学机械科学与工程学院,黑龙江大庆163318 [2]中国石油大庆石化公司化肥厂,黑龙江大庆163714

出　　处：《大庆师范学院学报》2017年第3期82-86,共5页Journal of Daqing Normal University

摘　　要：为解决某化肥厂因增产扩建导致CO_2再生塔导流筒损坏问题,在对CO_2再生塔导流筒原型数值模拟分析基础上,得到了导流筒易损部位及原因。并针对导流筒结构提出了两种改进方案,一种在导流筒与塔壁之间增加孔板;另一种在导流筒壁面上增加凸起结构。运用Ansys Fluent软件对新结构进行数值模拟,数值模拟分为三组,第一组优选孔板距导流筒的距离;第二组优选在最佳距离上孔板孔径的大小;第三组优选导流筒表面凸起结构的形式。对比改进前后结构中导流筒、塔壁、孔板上压力、速度等大小及分布情况,结合实际结构的加工安装性确定改进方案为孔板式结构。结果表明,新结构减小了导流筒的受力面积,改善入口处流体流动状态,便于制造和安装,达到了保护导流筒的目的。This paper is to solve the problem that the damage of the guide tube of CO_2 regenerator tower caused by the extension of chemical fertilizer plant. On the basis of the numerical simulation analysis of the prototype of the guide tube,the vulnerable parts of the guide tube and the cause of the damage were obtained. Two improved schemes are proposed for the structure of the guide tube. One is that an orifice plate is added between the guide tube and the tower wall; The other is to increase the Striped convex structure on the wall of guide tube. Use Ansys Fluent software to realize numerical simulations of the former and present improvement structures. Comparing the result of numerical simulation of the guided tube,and in combination with the actual operability make the best plan is orifice plate structure. The results showed that,the new structure reduces the stress of the guide tube area,improves the fluid flow state at the entrance and is convenient to manufacture and install. The purpose of protecting the guide tube is achieved.

关 键 词：导流筒 损坏 优选 流场 数值模拟 

分 类 号：TQ440.8[化学工程—化学肥料工业]