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.%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.
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