【摘要】 通过流体力学方法对变压吸附(PSA)系统进行模拟与优化。采用一维瞬态流体力学建立了PSA均压过程的理论模型,对PSA均压过程进行了模拟研究,得出均压时间随均压管道直径、吸附塔的体积、气体的组分等因素的变化关系,为均压管道的计算提供理论依据;采用计算流体力学对气体分布器的流场进行了模拟研究,并根据流场的特点开发了新型气体分布器,且计算结果显示流场分布较好;另外,对程控阀的流道进行了模拟研究,并根据模拟结果对流道进行了优化,结果显示,优化后的流道克服了原流道的弊端。更多还原

【Abstract】 The pressure swing adsorption(PSA) system were simulated and optimized by hydrodynamic method.The model of PSA pressure-equalizing process was created by one-dimensional transient hydrodynamics to simulate the pressure-equalizing process,by that the relationships between pressure-equalizing time and pipe diameter,adsorption column volume and gas composition were obtained,which provided the basic data for design of pressure-equalizing pipes.The flow field in gas distributor was simulated by the computational fluid dynamics(CFD) and a novel gas distributor with well flow field distribution was developed according to the features of flow field.The valve channel was also simulated and optimized,and the drawbacks were overcome after optimization.更多还原