【作者】 王志平；

【导师】 何国庚；

【作者基本信息】 华中科技大学 ， 动力工程， 2013， 硕士

【摘要】 空分系统的超大型化使得传统纯化器占地面积大，床层厚，床层阻力大等弊端越来越严重，基于这个问题，何国庚等人在立式径向流纯化器的基础上提出了一种新型专利结构。对于专利结构形式的纯化器，其性能情况是未知的。根据其他形式纯化器的设计经验，为专利结构纯化器提出了一些结构设计的原则，同时使用C语言编程对结构进行优化计算。另外使用了Fluent软件对C程序计算的结构进行了优化。跟传统的径向流纯化器相比，优化后的专利形式结构纯化器可以使纯化器体积降低20%，使吸附剂床层的压降降低10%，因而可以降低空压机排气压力。通过Fluent的模拟分析还发现，优化后专利结构形式纯化器可以获得较好的气流均布。纯化器的吸附性能是纯化器设计中要考虑的最重要的因素。使用理想气体等假设，为径向流纯化器建立了基于柱坐标的偏微分方程组，方程中考虑了传热传质过程中传热传质的轴向扩散系数等多个参数的影响。在MWorks中使用Modelica语言编程对径向流纯化器的分析发现，专利形式的径向流纯化器的吸附及再生过程符合吸附器的一般规律，表明了纯化器的模拟结果是合理的。同时对比传统结构与专利结构形式的径向流纯化器的模拟结果发现，专利结构的吸附效果提高15%，这表明专利结构形式纯化器在吸附上也具有优势的。通过变化处理空气量及纯化器进口温度发现，这些参数变化会对纯化器吸附效果产生重要影响，因此工况变化太大对纯化器是十分不利的。更多还原

【Abstract】 Super air separation system make the disadvantage such as covering huge area, bigbed thickness, big bed layer resistance etc. of traditional adsorber more and more serious.Based on this problem, He Guogeng etc. developed a new type adsorber on the basis ofthe traditional vertical radial flow adsorber.Adsorber of the patent type is all unknown. According to the design experience ofthe other form adsorber, several design principle for the patent type adsorber isdeveloped. With these design principle, a C language programming is used to calculateits structure. In addition the Fluent software is used to optimize the structure got from theC program. Compared to the traditional radial flow adsorber, the optimized patent typeadsorber can reduce the volume by20%, the pressure drop of the adsorbent bed by50%,which can reduce the exhaust pressure of the air compressor. According to the Fluentsoftware simulation result, the optimized structure of patent type adsorber can obtain agood uniformity.Adsorption property is very important for adsorber. With the ideal gas assumptionsetc., partial differential equations based on cylindrical coordinates were established. In theequations, the axial heat diffusion coefficient, the axial mass diffusion coefficient etc. inthe heat and mass transfer process were considered. The analysis result of the patent typeradial flow adsorber used Modelica language in MWorks shows that the adsorption andregeneration property of patent type radial adsorber is in accordance with the generalrule of adsorber, which suggests the simulation results is reasonable. The contrast ofgeneral structure and patent structure form of the radial flow adsorber simulation resultsshow that the adsorption property of the patent structure increased by15%, whichsuggests that patent type adsorber c also has the advantage on adsorption.By changing the importing temperature and air flux, result that these parameterschanging will have important influence on adsorption property was found, therefore hugecondition changing is very unfavorable for adsorber.更多还原