【Ten Years of Great Progress in Chemical Technology】The 1.5 TPD hydrogen liquefaction unit completed all performance tests between 2007 and 2023, passing expert technical evaluations
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Ten years of rapid development in chemical technology – praise for China’s prosperity and strength. This is just a starting point; more participation from everyone will make things even more lively. HaiChuan becomes even better with you here; we welcome everyone to join in the forum discussions. Everyone should pay attention to safety and know how to handle emergencies. ********************************************* On June 10, 2023, ZhongKe FuHai’s first domestically produced hydrogen liquefaction unit with independent intellectual property rights completed all performance tests in Fuyang, Anhui, successfully producing high-quality liquid hydrogen on a continuous and stable basis. Through on-site technical evaluation by experts, all performance parameters of this device meet and exceed the design specifications, indicating that Zhongke Fuhai has fully mastered the technologies for designing, manufacturing, integrating, and debugging large-scale hydrogen liquefaction equipment with independent intellectual property rights. The core components and equipment are domestically produced, and the company possesses a professional design team as well as advanced production lines capable of manufacturing both standardized and customized hydrogen liquefaction equipment, thus meeting China’s future needs for large-scale hydrogen liquefaction.
【Ten Years of Great Progress in Chemical Technology】Breakthroughs in the Domestic Production of Bisphenol A Catalysts from 2007 to 2023 https://bbs.hcbbs.com/thread-3788760-1-1.html (Source: Huahai Chuanliu – Haichuan Network)
This 1.5TPD hydrogen liquefaction unit was jointly developed, designed, and integrally manufactured by Zhongke Fuhai and the Institute of Physics and Chemistry, Chinese Academy of Sciences. The device uses liquid nitrogen for pre-cooling, and a helium refrigeration cycle consisting of two-stage helium gas-bearing turboexpansors is employed to achieve cooling; hydrogen is cooled step by step to low temperatures, after which it is throttled and supercooled to produce supercooled liquid hydrogen. Throughout the process, hydrogen undergoes normal-to-secondary hydrogen conversion in positive-secondary hydrogen converters with different temperature gradients; the measured concentration of secondary hydrogen in the product reached 98.6%, and the liquefaction rate was 1590 kg/day. The core components of this system include a high-speed gas-bearing turbine expander, a low-leakage plate-fin heat exchanger, a high-efficiency screw compressor, a precision oil filtration system, a protium-deutium converter, and a control system. The adiabatic efficiency of the turbine expander, which is one of the core components, reaches as high as 81.4%. According to on-site calculations, the electricity consumption for hydrogen liquefaction in this entire hydrogen liquefaction system is 12.1 kW·h per kg of liquid hydrogen, with a comprehensive specific energy consumption of 15.1 kW·h per kg of liquid hydrogen (including the energy required for pre-cooling with liquid nitrogen). This level represents a low energy consumption, on par with that of hydrogen liquefaction systems of similar scale worldwide. The facility successfully produced liquid hydrogen in December 2022, fully meeting all design requirements. On June 10, 2023, the expert on-site performance testing meeting for the 1.5TPD hydrogen liquefaction unit was successfully held. This conference was attended by industry experts from the Chinese Academy of Sciences and various universities. The experts carefully reviewed the performance test report for the 1.5TPD hydrogen liquefaction unit, and inspected its operation on-site. Based on the results of the on-site tests, they unanimously agreed that all technical specifications met and exceeded the design requirements.
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Ten years of rapid development in chemical technology: Praise for the prosperous and strong China of today