【Ten Years of Rapid Development in Chemical Engineering Equipment】1288–2023: Expansion refrigeration using hydrogen-helium-neon mixtures to address the high energy consumption associated with hydrogen liquefaction
Thread Content
According to a notice issued by the **Intellectual Property Office on December 4, 2023, Hangzhou Zhongtai Cryogenic Technology Co., Ltd. submitted an application for a device designed for hydrogen liquefaction using expansion refrigeration with a hydrogen-helium-neon mixture. The publication number of this application is CN117146526A, and the application was filed in September 2023. The patent abstract indicates that this invention discloses a hydrogen liquefaction device using expansion refrigeration with a hydrogen-helium-neon mixture, and it falls within the field of refrigeration and cryogenic engineering technology. The device includes an atmospheric pre-cooling cryostat, a vacuum cryogenic cryostat, a low-temperature adsorber, a refrigerant storage tank, a hydrogen-helium-neon mixture compression unit, a circulating hydrogen compression unit, an expansion unit, and a liquid hydrogen storage tank. The raw hydrogen purified upstream is pre-cooled in a pre-cooling cryogenic tank before entering a low-temperature adsorber for further purification. The purified hydrogen is then cooled further in a deep-cryogenic tank through an expansion refrigeration cycle using a hydrogen-helium-neon mixture; after being cooled to the liquefaction temperature via throttling, the gaseous hydrogen is warmed up again, compressed, and reintegrated into the raw hydrogen stream, while the liquid hydrogen is stored in a liquid hydrogen tank. The hydrogen liquefaction unit provided by the present invention enables the secondary hydrogen content in the liquid hydrogen product to be no less than 97%, with a daily production capacity of 50–100 tons of liquid hydrogen, and a system specific energy consumption of no more than 6.0 kWh/kg of liquid hydrogen. It solves the problem of high energy consumption in hydrogen liquefaction, eliminates the need for large hydrogen/helium compressors and hydrogen/helium expanders, and significantly reduces the production cost of liquid hydrogen.
On June 9, 2021, Zhongtai Co., Ltd. issued a announcement regarding the signing of a framework cooperation agreement for industrialization projects in wind power, photovoltaic hydrogen production, and hydrogen liquefaction. CSIC Wind Power, Runfeng Energy, and Zhongtai Co., Ltd. will jointly invest in projects in Chifeng related to the manufacturing of core equipment for wind power and photovoltaic systems, the development and construction of wind farms and photovoltaic power plants, as well as hydrogen production and hydrogen liquefaction. The announcement states that Hangzhou Zhongtai Cryogenic Technology Co., Ltd. (Party D) has signed a \"Framework Cooperation Agreement for the Industrialization Project of Wind Power, Photovoltaic Hydrogen Production, and Hydrogen Liquefaction in Chifeng\" with the People’s Government of Songshan District, Chifeng City (Party A), China State Shipbuilding Group Wind Power Development Co., Ltd. (Party B), and Zhejiang Runfeng Energy Group Co., Ltd. (Party C). The Agreement aims to utilize the excellent wind and solar energy resources in Chifeng City, Inner Mongolia, to develop low-cost renewable energy-based hydrogen production technologies, while accelerating the conversion of these regional resources and the progress of new industrialization in the Chifeng area. Under the cooperation agreement, CSSC Wind Power, Runfeng Energy, and Zhongtai Co., Ltd. will jointly invest in Chifeng in industrialization projects such as the manufacturing of core wind and photovoltaic equipment, the development and construction of wind farms and photovoltaic power plants, as well as hydrogen production and hydrogen liquefaction. CSIC Wind Power, Runfeng Energy, and Zhongtai Shares will develop \"wind farm projects and photovoltaic power station projects\" in Songshan District, Chifeng City ； Wind power-based hydrogen production and hydrogen liquefaction plant project ； \"An intelligent equipment manufacturing park for supporting industrial chains such as wind power, photovoltaic energy, and hydrogen production\", with phase-based development of \"wind farm investment and construction, as well as photovoltaic power plant investment and construction\" ； Construction and operation of wind power-based hydrogen production and hydrogen liquefaction plants ； The wind power and hydrogen production-related industrial chain projects, including the intelligent manufacturing base for wind power inverters, the intelligent manufacturing base for photovoltaic inverters, and the production base for hydrogen production equipment, will be carried out in three phases. Party A is responsible for coordinating with the People’s Government of Chifeng City to support Party B, Party C, and Party D, and to provide assistance regarding resource development rights, project approval, commencement permits, regulatory procedures, and applications for production land within the jurisdiction of Chifeng City. Party B, Party C, and Party D shall develop a “wind farm development project” within Party A’s jurisdiction ； Wind power-based hydrogen production and hydrogen liquefaction plant project ； \"Intelligent Equipment Manufacturing Park for the Wind Power and Hydrogen Production Supply Chain\", with phase-based development of \"wind farm construction and operation\" ； Construction and operation of wind power-based hydrogen production and hydrogen liquefaction plants ； Projects in the wind power and hydrogen production-related industrial chains, including production bases for wind power frequency converters, intelligent manufacturing bases for photovoltaic inverters, production bases for hydrogen production equipment, and manufacturing bases for hydrogen liquefaction equipment, etc. – these measures ensure that the funds, technology, and personnel required for project development and construction are available in a timely manner. Construction will commence on schedule in strict accordance with the agreed timelines, and the projects will submit themselves to the supervision of local authorities. Under equal conditions, priority will be given to products and services provided by local enterprises.
【Ten Years of Rapid Development in Chemical Processing Equipment】From 1289 to 2023: Domestic 48-inch cracking gas valves were used in multiple projects for producing millions of tons of ethylene https://bbs.hcbbs.com/thread-5498082-1-1.html (Source: Haichuan Chemical Industry Forum)
Haha, that’s great, really good indeed. Ah ah