热力发电2025，Vol.54Issue(8)：84-94,11.DOI:10.19666/j.rlfd.202411252
集成合成氨余热储存利用质子交换膜电解槽制氢/热备双模式运行性能
Operation performance of PEM electrolyzer in dual-mode operation for hydrogen production and hot standby with integrated ammonia synthesis waste heat storage and utilization
摘要
Abstract
Ammonia synthesize through hydrogen produced by green electricity offers an effective solution to the widespread abandonment of wind and solar resources and the shortage of green fuel chemicals.A wind-solar-driven proton exchange membrane(PEM)electrolyzer system in dual-mode operation for hydrogen production and hot standby with integrated ammonia synthesis waste heat storage is proposed,addressing issues of frequent start-stop cycles under fluctuating wind-solar outputs and waste heat recovery in ammonia synthesis processes.The results indicate that,the PEM electrolyzer dual-mode operating system,integrated with ammonia synthesis waste heat storage,can significantly shorten the startup time of the electrolyzer.The startup time at 25℃is 512 seconds,while the hot startup from the standby mode at 47.5℃requires only 274 seconds.Under hot standby mode,the system consumes electricity solely from feedwater pumps,achieving a specific hydrogen production power consumption of only 0.49 kW.The dual-tank thermal storage subsystem is configured with 10.8 tons of Dowtherm-G heat transfer oil.In heat storage mode,it absorbs waste heat gas from the ammonia synthesis unit at a flow rate of 3 kg/s,allowing the thermal tank to reach full capacity within 1 hour.In heat release mode,it heats the electrolyzer inlet water at a flow rate of 0.64 kg/s,enabling the electrolyzer to sustain standby operation for 4.68 hours.Furthermore,the new system is expected to generate long-term benefits that consistently exceed costs,ensuring sustained economic viability.关键词
合成氨/绿氨/质子交换膜电解槽/热备用/余热利用/动态性能/经济性Key words
ammonia synthesis/green ammonia/proton exchange membrane eletrolyzer/hot standby/waste heat utilization/dynamic performance/economy引用本文复制引用
裴长运,郭铁柱,张汉飞,孙名家,王桂楠,殷诗奇,王露,宋玮,彭莘,于吉庆,杜逸云..集成合成氨余热储存利用质子交换膜电解槽制氢/热备双模式运行性能[J].热力发电,2025,54(8):84-94,11.基金项目
国家自然科学基金重大项目(52090064) Major Project of National Natural Science Foundation of China(52090064) （52090064）
