加氢站液氢储罐的压力控制与增压方式探讨

Discussion on Pressure Control and Pressurization of Liquid Hydrogen Storage Tank in Hydrogenation Station

液氢作为储氢介质具有高储氢密度、纯度以及快速充装等优势,被认为是应对未来加氢需求的理想选择。然而,目前中国在加氢技术和液氢储罐压力控制方面与国际先进水平存在差距。文章首先详述了液氢卸车过程中的压力控制方法、液氢储存时的压力控制方法,以及加注时的储罐压力控制方法;其次分别对不同工况下液氢储罐的压力控制目标和关键因素进行了深入讨论,强调了安全、效率和设备可靠性的重要性;最后总结了液氢储罐增压控制的各种方式和需要注意的问题,推荐了罐外安装的增压汽化器的增压方式,并强调了未来需要发展具有回收功能的零排放氢气压力控制系统。整体而言,文章提供了对中国加氢站液氢储罐压力控制技术洞察,为中国氢能基础设施的发展提供了有益的参考和支持。

Liquid hydrogen boasts high storage density,purity,and fast filling,making it ideal for China’s future hydrogenation needs.However,a technological gap exists compared to international standards,particularly in liquid hydrogen storage tanks’pressure control systems.This paper focuses on unloading-process pressure control,specifically examining the key points of pump-based unloading,including pump type,material compatibility,and safety features.Secondly,the crucial factors for effective pressure control in unloading vehicles,emphasizing safety,efficiency,and equipment reliability were discussed.Various pressure control options were explored within the storage tank,with a detailed investigation of pump selection,safety performance,and temperature control for the pump-unloading mode.Finally,the paper proposes an optimal pressure control method for Chinese hydrogen refueling stations,recommending a booster carburetor located outside the tank.The need for future development of zero-emission hydrogen pressure control systems with recovery capabilities was highlighted.This paper offers valuable insights into pressure control technology for liquid hydrogen storage,contributing to the advancement of China’s hydrogen energy infrastructure.