French researchers have recently developed a system for producing hydrogen by electrolyzing water vapor at high temperatures. The rate of hydrogen generation exceeds 90%. This low-energy, high-performance hydrogen production system is expected to reduce the cost of hydrogen production for the production of industrial hydrogen and hydrogen energy. Open up new roads.
Hydrogen can be produced by methane reforming, electrolysis of water, and the like. Although the cost of hydrogen production from methane reforming is low, the process is complicated, and it consumes a large amount of fossil energy, and generates a large amount of carbon dioxide. However, the hydrogen production from electrolyzed water is simple and the cost is very high.
The new energy technology innovation laboratory under the French Atomic Energy Commission designed a high-temperature electrolysis system to produce hydrogen gas at a working temperature of 700 degrees Celsius and evaporate water vapor at a temperature of 150 degrees Celsius. The rate of production is more than 90%. The system can also recover the heat of the exhaust gas during the production process for system heating. This result proves that by maximizing the use of thermal energy in the system, low-temperature thermal energy can also be used to produce hydrogen and achieve a satisfactory high generation rate.
According to reports, the system is compact in size, the overall volume is similar to a refrigerator, and can produce 1 to 2.5 standard cubic meters of hydrogen per hour. Not only the system itself is not costly, and the operating cost is also very limited. Only 1 standard cubic meter of hydrogen gas is consumed for only 3.9 kWh.
Hydrogen is an important industrial raw material. It is widely used in many fields such as iron and steel metallurgy, glass processing, and agricultural food processing. At the same time, as a fuel, hydrogen has the characteristics of no pollution, renewable, high energy density, convenient storage and transportation. It is considered one of the best clean energy sources. (Reporter Zhang Xuefei)
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