The theme of this winter Olympics is green, and hydrogen energy shines brightly in the field of clean energy. From the Winter Olympic Games to the winter Paralympic Games, hydrogen energy is continuously provided Dynagreen Environmental Protection Group Co.Ltd(601330) , hydrogen cars, hydrogen torches and hydrogen refueling stations. Behind the wonderful moments of the stadium, there is no lack of support for the systematic application of hydrogen energy.
In an interview with Huaxia times, Zhong Yingxin, the Board Secretary of CIMC anrec, said that during the whole winter Olympics and winter Paralympic Games, in addition to hydrogen energy, there are some green power applications such as wind power and photovoltaic. The demonstration effect of clean energy will guide the industry, enhance the public’s confidence in clean energy, including hydrogen energy, and greatly improve the technology of the whole industrial chain, The industry will enter a period of rapid development.
hydrogen energy industry technology breakthrough
The continuous development of hydrogen energy industry depends on the continuous progress of technology. In recent years, the technologies of hydrogen production, storage, transportation, application and other related industrial chains have iterated rapidly, including key supporting technologies such as hydrogenation station and hydrogen storage bottle.
Li Huaien, President of CIMC Hydrogen Energy Research Institute under CIMC Enrico, told Huaxia times that from ice cube to Yanqing competition area and then to Zhangjiakou competition area, CIMC hydrogen energy provided more than 30 hydrogen gas tube bundle containers, more than 10 50MPa hydrogen storage bottle sets and a set of 70MPa fully integrated hydrogen refueling station equipment for Beijing Winter Olympics and winter Paralympic Games, Provide services for the Winter Olympic and Paralympic Games, and ensure the hydrogen supply of the torch and more than 800 hydrogen fueled vehicles.
High pressure gaseous hydrogen storage is the main way of hydrogen storage at this stage. It has the characteristics of fast hydrogen charging and discharging and simple container structure. It is also the mainstream of current technology. The 70 MPa skid mounted fully integrated hydrogen refueling station equipment put into use for the first time in the Winter Olympic Games and winter Paralympic Games has achieved a number of technological breakthroughs.
It is reported that the 70 MPa skid mounted fully integrated hydrogenation station equipment is China’s first fully integrated hydrogenation device with multiple functions such as gas collection and unloading, pressurization, control and AI intelligent monitoring system; It is the first 70MPa filling system meeting the T40 level in SAE j2601 filling protocol and an integrated efficient and convenient hydrogenation device equipped with infrared data communication function; It is the first multi gas source skid mounted hydrogenation unit that can meet the gas supply of 20MPa and 30MPa hydrogen trailers at the same time; It is the first complete explosion-proof skid mounted hydrogenation device; It is the first integrated skid mounted explosion-proof cold water system; It is also the first integrated skid mounted safety system and the first application integrated large screen skid mounted device.
Li Huaien said that China used to have similar hydrogenation station equipment package products, but the degree of integration is not high. CIMC Enrico put all functional equipment, including compressor, two sets of explosion-proof refrigeration units, hydrogenation machine control system, safety monitoring system and video monitoring system, into the container, so the structural design and monomer design are very difficult. 70MPa is equivalent to 700 times of atmospheric pressure, which is very large. The requirements for the whole system, all components, pipeline system, valves and installation and manufacturing process should be more strict.
However, the project also encountered difficulties during the experiment. Li Huaien mentioned that the pressure and leakage test of 70 MPa skid mounted fully integrated hydrogenation station equipment need to be carried out. In order to ensure safety, the test pressure should be up to 103 MPa and maintained for 24 hours. This intensity is very extraordinary. However, there is always leakage in the test process. Hydrogen molecules are particularly small, and the leakage point is not easy to find. When I couldn’t find the problem, I was very anxious. The team checked the parts and pipeline sections one by one. It took a long time and finally solved the problem.
“The test process is very careful and patient.” Li Huaien sighed, “to ensure the safety of the product, the pressure and leakage test need to be observed continuously for more than 24 hours. After the leakage point is found, it needs to be observed for another 24 hours. The team once worked continuously for two days and two nights. In addition, the weather was very cold at that time, it was really not easy for everyone.”
Commercial hydrogen
Hydrogen has special physical properties. Besides being clean, low-carbon and high calorific value, flammability and explosion are also its characteristics that can not be ignored. Therefore, the safe application of hydrogen energy is very important, which is also the technical difficulty to be overcome by current hydrogen energy equipment.
The 70 MPa skid mounted fully integrated hydrogenation station equipment has made special treatment in terms of explosion-proof. Li Huaien introduced that safety issues should be fully considered and safety measures should be strictly taken in the whole process and every link from product design to production and manufacturing. Every part in the container is explosion-proof, and some unit parts even need to be specially customized with suppliers. The explosion-proof unit configuration of this equipment is the most advanced in China’s hydrogenation stations.
In addition, because the project is configured for the hydrogenation station in Zhangjiakou competition area, it needs to face extremely cold weather conditions outdoors. The 70 MPa skid mounted fully integrated hydrogenation station equipment is also designed for low temperature protection. It is reported that most of the materials in the equipment are stainless steel, which is more suitable for use in low temperature environment. All the parts involving liquid inside are equipped with antifreeze. If the temperature is low to a certain extent, the automatic control system of the equipment will also enable the heating device and thermal insulation device. The container itself also plays a protective role, which can ensure the normal operation of the equipment under low temperature.
Due to the high cost and other problems, hydrogen energy has not yet realized large-scale commercial application. According to Li Huaien’s analysis, if hydrogen energy wants to become a mass energy, economy, low cost and easy use are indispensable. From an economic perspective, the hydrogen industry needs to first reduce the cost of hydrogen production and equipment. It is believed that after the terminal application reaches a certain scale in the future, the upstream and downstream costs of hydrogen energy will be reduced, and the commercialization degree of hydrogen energy will be higher.
The use of hydrogen energy in the Winter Olympic Games and the winter Paralympic Games has undoubtedly promoted the development process of the whole hydrogen energy industry. Zhong Yingxin said that the Winter Olympic and Paralympic Games are a large-scale clean energy demonstration project, and its influence has expanded not only in China, but also all over the world. Due to the water after combustion, the use of hydrogen energy has no carbon emission, which is considered to be the most promising secondary energy in the 21st century. Thanks to its clean, low-carbon, high calorific value and high conversion rate, hydrogen energy will be one of the main ways for China to achieve the goal of carbon neutralization in the future.
Li Huaien, who has worked for more than 20 years, is deeply honored to contribute to the Winter Olympic and Paralympic Games, “It must be very exciting to participate in the work of the Winter Olympics and the winter Paralympic Games. The torch and service vehicles of this sports event have chosen hydrogen energy as energy, which shows the country’s determination to save energy and reduce emissions. It also proves that we chose hydrogen energy in the right direction, which is very happy. I hope hydrogen energy will account for a considerable proportion in China’s energy structure in the future We can walk into thousands of families and make our life better. “
