储氢提纯和氢网络的耦合优化

基于氢网络的集成以及AB₅型储氢材料LaNi_4.75Fe_0.25及LaNi_4.85Al_0.15的特性，对储氢提纯在氢网络中的应用进行研究。综合考虑LaNi_4.75Fe_0.25及LaNi_4.85Al_0.15储氢/放氢动力学，建立了储氢提纯氢网络的优化方法，根据单位质量储氢材料提纯的节氢能力和公用工程节省量与提纯参数的关系，确定最优提纯氢源浓度、最大公用工程节省量、储氢材料量和吸氢时间。用该方法对某炼厂氢网络和储氢提纯单元进行优化，结果表明，最优提纯氢源浓度为70%，提纯后公用工程可节省23.72%； LaNi_4.85Al_0.15作为储氢提纯材料优于LaNi_4.75Fe_0.25，其消耗量为991.26 kg。

Coupling optimization of hydrogen-storage based purification and hydrogen network

Based on the integration of the hydrogen network and the characteristics of the AB₅ hydrogen storage materials LaNi_4.75Fe_0.25 and LaNi_4.85Al_0.15, the application of hydrogen storage purification in the hydrogen network was studied. According to the relationship between the hydrogen-saving capacity of unit hydrogen storage material and the purification parameters, and that between utility saving and purification parameters, the optimal purification feed purity, the maximum utility saving, the amount of hydrogen storage material and the hydrogen absorption time can be determined. The proposed method is used to optimize the hydrogen network and hydrogen storage purification unit of a refinery. The results show that, in this refinery, the optimal purification hydrogen feed purity is 70% and the utility consumption can be reduced by 23.72%; more hydrogen can be saved when LaNi_4.85Al_0.15 is used in the purification unit instead of LaNi_4.75Fe_0.25, and the amount of LaNi_4.85Al_0.15 demanded in the purification unit is 991.26 kg.