变压吸附提纯氢装置最小分离功的研究

Minimum Separating Work for Hydrogen Purification by Pressure Swing Adsorption

在考虑氢气提纯的氢气网络中,除了氢气的消耗外,提纯氢气时所消耗的功也是主要的能耗。为了将提纯氢气的能耗更好的与氢网络优化结合起来,基于最小分离功分析了变压吸附氢提纯过程中,进料中氢气摩尔分数(yF)和提纯产品中氢气摩尔分数(y1)的变化对氢气提纯能耗的影响。分析结果表明,最小分离功随yF的增大先增大后减小,存在最小分离功的最大值;随y1的增大和解析气中氢气摩尔分数的降低而增大。分析结果为考虑提纯能耗的氢气网络优化提供了理论依据。

The energy consumption in hydrogen purification by pressure swing adsorption, which was applied in refineries, was investigated based on the minimum separation work and combined with hydrogen network optimization. In order to optimize hydrogen network, the hydrogen consumption and energy consumption should be considered simultaneously. The effect of the hydrogen concentrations in feed, in purified product and in tail gas on the energy consumption was analyzed. The results indicate that, as the hydrogen concentration in feed increases, the minimum separation work first increases and then decreases, and there is a maximum value. The minimum separation work increases when the hydrogen concentration in the purified product increases or the concentration in the tail gas decreases. The results provide a theoretical basis for the optimization of hydrogen network.