Several links in the hydrogen energy industry chain
So how many links does the current hydrogen energy industry chain include? Generally speaking, the hydrogen energy industry chain has three main links in the field of transportation: hydrogen production, storage, transportation and refueling, and the usage scenarios of vehicles and other transportation tools. In the energy field, there are two main links: hydrogen production (synthesis gas) and power generation and heat generation.
In terms of hydrogen production, qualified hydrogen can be obtained from 6 process routes, and a reasonable hydrogen production process is determined according to local resource endowments and basic energy prices. Among them, the production of hydrogen from coal is strictly limited, because there is a large amount of CO2 emissions, and the treatment of the three wastes is also a high investment, and the emissions of the three wastes are also very large. Hydrogen production from natural gas is currently one of the most economical routes in China, and it is the first choice for small and medium-sized hydrogen production plants. Methanol hydrogen production is a flexible hydrogen production method in China, and it is also one of the most economical ways to invest in hydrogen production plants. Ammonia decomposition to produce hydrogen represents a future consumption direction of green hydrogen, which will be gradually accepted by the public because it has no carbon emissions. Hydrogen production by water electrolysis is the most popular, because it is directly related to wind and solar energy consumption and carbon emission reduction. Hydrogen production by water electrolysis is divided into AWE alkaline water electrolysis hydrogen production. Extensive hydrogen production lines. AEM solid polymer anion exchange membrane water electrolysis for hydrogen production has just started. PEM proton exchange membrane water electrolysis is the most suitable hydrogen production method at present, but it is currently too expensive. SOE solid oxide water electrolysis hydrogen production, the lowest energy consumption, the closest to the theoretical system, the most technically difficult water electrolysis hydrogen production process. Hydrogen recovery from industrial by-product hydrogen needs to be related to the local industrial distribution. There is no universality and reproducibility. The recovered hydrogen has an opportunity cost, so it is the best way to increase the added value of hydrogen.
In the industries involved in storage, transportation and refueling, there are hydrogen compressors, hydrogen storage tanks, hydrogen gas cylinders, hydrogenation machines, hydrogenation guns and other industries.
The usage scenarios of vehicles and other means of transportation: fuel cells (catalysts, membrane electrodes, bipolar plates, carbon paper, sealing materials), fuel cell engine assemblies, automobile manufacturers, hydrogen pipelines and other components assembly manufacturers.
Applications in the energy field include hydrogen production (synthesis gas production), power generation and heating or dual heating and cooling, involving fuel cells such as solid oxide fuel cell SOFC, molten carbonate fuel cell MCFC, phosphate fuel cell PAFC, etc. . It involves catalysts, fuel cells, reformers, purifiers, power generation integration, product assembly and other links.