Sinochem’s new network news hydrogen energy has become one of the important new energy sources due to its advantages of scaleable application, high energy conversion efficiency, clean and pollution-free use, and various forms of utilization. However, the lack of economical, efficient and safe hydrogen storage and transportation technology has become one of the major bottlenecks restricting the application of hydrogen energy. "Hydrogen storage materials must have high hydrogen storage capacity, high safety, fast hydrogen absorption/dehydration rate, long life, and low cost, etc. to be commercialized." This view was acquired by experts and scholars at the Xiangshan Science Conference. Unanimously agreed.
Diversified Development of Hydrogen Storage Materials At present, hydrogen storage materials face three major challenges: how to obtain new types of high-capacity hydrogen storage materials/systems, how to reduce the hydrogen storage/desorption temperature and increase the hydrogen storage rate, and how to increase Hydrogen source system energy storage density and improve its heat transfer / mass transfer performance. For the current stage of hydrogen storage technology research, some experts have suggested that existing hydrogen storage materials have advantages and disadvantages, and must be rationally used in combination with specific use methods, while focusing on diversified and common development. In the short term, hydrogen storage in high-pressure tanks is still the main means of hydrogen storage and transportation. However, in the long run, such as lightweight materials, organic liquid hydrogen storage materials, etc. also have their own advantages, it should focus on support and development.
Experts suggested that before the commercial hydrogen storage materials can be successfully commercialized, the safety of hydrogen storage and transportation and large-scale storage and transportation are the focus of attention, and efforts should be made to develop new designs of lightweight hydrogen storage materials, hydrogen storage containers, and related technologies. And development, research and design of new organic liquid hydrogen storage materials and their design, preparation and characterization of cheap and efficient hydrogenation/dehydrogenation catalysts, bonding and interaction of hydrogen and hydrogen storage materials, and diffusion of hydrogen in materials, utilizing organic liquid hydrogen storage The feasibility of materials for long-distance hydrogen transfer.
Good prospects for high-pressure gaseous hydrogen storage It is understood that high-pressure gaseous hydrogen storage has the advantages of simple equipment structure, low energy consumption, and fast charge and discharge rates, and is one of the most commercially viable hydrogen storage methods. The important scientific issues involved in high-pressure gaseous hydrogen storage are the physical mechanism and control method for high-pressure hydrogen fast charge temperature rise, the performance degradation rules of structural materials under high-pressure hydrogen environment, and the hydrogen embrittlement assessment method, and the lightweight design method for vehicle-mounted high-pressure hydrogen storage hydrogen storage systems. High pressure gaseous hydrogen storage system safety performance prediction and verification methods, high pressure hydrogen storage system risk prediction and control methods.
According to Zheng Jinyang, director of the Institute of Chemical Machinery of Zhejiang University, China currently has high-pressure hydrogen storage vessels, high-pressure hydrogen compressors, fixed high-pressure hydrogen refueling stations, mobile high-pressure hydrogen refueling stations, high-pressure gas refilling machines, and high-pressure blasting test devices. The capacity of high-pressure hydrogen systems such as large-volume high-pressure fatigue test equipment, and high-pressure hydrogen storage and hydrogenation technologies in China have leapt to the advanced level in the world, providing powerful technical support for the development of hydrogen energy, especially hydrogen fuel cell vehicles.
It is reported that the institute has developed the world's largest fixed metal hydrogen storage tank. In addition, the research and development of vehicle-mounted lightweight hydrogen storage tanks has progressed smoothly. 35 megapascal hydrogen storage tanks have been domesticated and 70 megapascals are under development. However, high-pressure hydrogen storage containers for transportation have problems such as heavy weight and low hydrogen storage, which is also a difficulty that many experts are trying to tackle. Constrained by the state of the art, this type of container is only suitable for supplying hydrogen from a hydrogen plant to users who are not too far away and have a small amount of hydrogen.
Efficient and safe is the pursuit of goals Mao Zongqiang, a professor at Tsinghua University, suggested that for large, long-distance hydrogen transport, pipelines can be considered. The long-distance pipeline transport of hydrogen has a history of 60 years. The oldest long-distance pipeline for hydrogen transmission was built in Ruhr, Germany in 1938. The total length is 208 km and it connects 18 production plants and users. No accidents have occurred. The longest hydrogen pipeline in the world is between France and Belgium, about 400 kilometers long.
In addition, on-site hydrogen production using liquid fuels formed by using organic molecules as hydrogen storage medium can significantly increase hydrogen storage efficiency, and the infrastructures such as transportation and storage are relatively complete, and can meet the short-to-medium-term goals for major strategic national hydrogen energy needs. . Organic liquid hydride hydrogen storage has a large amount of hydrogen storage, and is safe and convenient for storage, transportation, maintenance, and maintenance. It is easy to use existing oil storage and transportation equipment, and can be reused for many times. Especially benzene, **, naphthalene, etc. are ideal liquid hydrogen storage media, and the hydrogen storage capacity is much higher than traditional high pressure compressed hydrogen storage and hydrogen storage alloy hydrogen storage.
Diversified Development of Hydrogen Storage Materials At present, hydrogen storage materials face three major challenges: how to obtain new types of high-capacity hydrogen storage materials/systems, how to reduce the hydrogen storage/desorption temperature and increase the hydrogen storage rate, and how to increase Hydrogen source system energy storage density and improve its heat transfer / mass transfer performance. For the current stage of hydrogen storage technology research, some experts have suggested that existing hydrogen storage materials have advantages and disadvantages, and must be rationally used in combination with specific use methods, while focusing on diversified and common development. In the short term, hydrogen storage in high-pressure tanks is still the main means of hydrogen storage and transportation. However, in the long run, such as lightweight materials, organic liquid hydrogen storage materials, etc. also have their own advantages, it should focus on support and development.
Experts suggested that before the commercial hydrogen storage materials can be successfully commercialized, the safety of hydrogen storage and transportation and large-scale storage and transportation are the focus of attention, and efforts should be made to develop new designs of lightweight hydrogen storage materials, hydrogen storage containers, and related technologies. And development, research and design of new organic liquid hydrogen storage materials and their design, preparation and characterization of cheap and efficient hydrogenation/dehydrogenation catalysts, bonding and interaction of hydrogen and hydrogen storage materials, and diffusion of hydrogen in materials, utilizing organic liquid hydrogen storage The feasibility of materials for long-distance hydrogen transfer.
Good prospects for high-pressure gaseous hydrogen storage It is understood that high-pressure gaseous hydrogen storage has the advantages of simple equipment structure, low energy consumption, and fast charge and discharge rates, and is one of the most commercially viable hydrogen storage methods. The important scientific issues involved in high-pressure gaseous hydrogen storage are the physical mechanism and control method for high-pressure hydrogen fast charge temperature rise, the performance degradation rules of structural materials under high-pressure hydrogen environment, and the hydrogen embrittlement assessment method, and the lightweight design method for vehicle-mounted high-pressure hydrogen storage hydrogen storage systems. High pressure gaseous hydrogen storage system safety performance prediction and verification methods, high pressure hydrogen storage system risk prediction and control methods.
According to Zheng Jinyang, director of the Institute of Chemical Machinery of Zhejiang University, China currently has high-pressure hydrogen storage vessels, high-pressure hydrogen compressors, fixed high-pressure hydrogen refueling stations, mobile high-pressure hydrogen refueling stations, high-pressure gas refilling machines, and high-pressure blasting test devices. The capacity of high-pressure hydrogen systems such as large-volume high-pressure fatigue test equipment, and high-pressure hydrogen storage and hydrogenation technologies in China have leapt to the advanced level in the world, providing powerful technical support for the development of hydrogen energy, especially hydrogen fuel cell vehicles.
It is reported that the institute has developed the world's largest fixed metal hydrogen storage tank. In addition, the research and development of vehicle-mounted lightweight hydrogen storage tanks has progressed smoothly. 35 megapascal hydrogen storage tanks have been domesticated and 70 megapascals are under development. However, high-pressure hydrogen storage containers for transportation have problems such as heavy weight and low hydrogen storage, which is also a difficulty that many experts are trying to tackle. Constrained by the state of the art, this type of container is only suitable for supplying hydrogen from a hydrogen plant to users who are not too far away and have a small amount of hydrogen.
Efficient and safe is the pursuit of goals Mao Zongqiang, a professor at Tsinghua University, suggested that for large, long-distance hydrogen transport, pipelines can be considered. The long-distance pipeline transport of hydrogen has a history of 60 years. The oldest long-distance pipeline for hydrogen transmission was built in Ruhr, Germany in 1938. The total length is 208 km and it connects 18 production plants and users. No accidents have occurred. The longest hydrogen pipeline in the world is between France and Belgium, about 400 kilometers long.
In addition, on-site hydrogen production using liquid fuels formed by using organic molecules as hydrogen storage medium can significantly increase hydrogen storage efficiency, and the infrastructures such as transportation and storage are relatively complete, and can meet the short-to-medium-term goals for major strategic national hydrogen energy needs. . Organic liquid hydride hydrogen storage has a large amount of hydrogen storage, and is safe and convenient for storage, transportation, maintenance, and maintenance. It is easy to use existing oil storage and transportation equipment, and can be reused for many times. Especially benzene, **, naphthalene, etc. are ideal liquid hydrogen storage media, and the hydrogen storage capacity is much higher than traditional high pressure compressed hydrogen storage and hydrogen storage alloy hydrogen storage.
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