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The iron oxide cycle (Fe₃O₄/FeO) is the original two-step thermochemical cycle proposed for use for hydrogen production. It is based on the reduction and subsequent oxidation of iron ions, particularly the reduction and oxidation from Fe³⁺ to Fe²⁺. The ferrites, or iron oxide, begins in the form of a spinel and depending on the reaction conditions, dopant metals and support material forms either Wüstites or different spinels.
A doping modification and granulation preparation method for improving combustion heat value of iron powder
The application discloses a kind of doping modification and granulation preparation methods for improving iron powder combustion heat value, belong to new energy storage and zero-carbon fuel technical field.The method is abandoned light and wind power electrolytic hydrogen as reducing agent, hydrogen reduction is prepared to millimeter level fuel particle with ignition temperature ≤600°C after iron oxide raw material is reduced to metal iron powder, through doping aluminum powder, silicon iron powder, magnesium powder and boron powder and other high heat value metal powder, combination binder granulation and surface passivation treatment, heat value ≥18 MJ / kg.The application significantly improves the combustion heat value of iron powder (50-100% higher than pure iron powder), reduces the ignition temperature, improves the storage stability and combustion characteristics, and the combustion products can be magnetically separated and recycled for use, and the remaining components can be sold as building material raw materials, constructing a zero-carbon energy recycling system of "green electricity hydrogen production-hydrogen reduction-iron powder combustion-product recovery", providing a technically feasible and economically reasonable solution for replacing coal-fired power generation.
Owner:SHAANXI LANYAO ENERGY TECHNOLOGY CO LTD