Hydrogen energy

The hydrogen energy industry refers to the entire industrial chain from the production, storage, transportation to application of hydrogen. Hydrogen, with the chemical formula H₂, is a highly flammable, colorless, transparent, odorless, tasteless gas that is insoluble in water at normal temperature and pressure. It is the gas with the lowest density known in the world. According to the carbon emission intensity of the production process, hydrogen is classified as ";" "Grey hydrogen" “ "Blue hydrogen" And ";" "Green hydrogen" . Grey hydrogen refers to hydrogen produced from fossil fuels without any treatment of the released carbon dioxide. Blue hydrogen refers to the production of hydrogen from fossil fuels while capturing and storing the released carbon dioxide. Green hydrogen refers to hydrogen gas produced by electrolysis or photolysis using renewable energy.

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Process flow chart of coal-to-hydrogen production