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Method and device for preparing hydrogen and separating CO2 based on Fe2O3-NiO mixture

A technology of fe2o3-nio and mixture, which is applied in the field of producing hydrogen and separating CO2 based on Fe2O3-NiO mixture, which can solve problems such as ecological environment damage

Inactive Publication Date: 2011-10-26
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the conversion of fossil energy to hydrogen energy, a large amount of CO will be emitted. 2 , the resulting greenhouse effect has caused serious damage to the ecological environment

Method used

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  • Method and device for preparing hydrogen and separating CO2 based on Fe2O3-NiO mixture
  • Method and device for preparing hydrogen and separating CO2 based on Fe2O3-NiO mixture

Examples

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Embodiment 1

[0038] An Fe-based 2 o 3 -NiO mixture for hydrogen production and CO separation 2 The method is characterized in that: the elemental Fe and Ni are placed in the fluidized bed of the air reactor, the temperature of the fluidized bed of the air reactor is controlled at 1000 ° C, and air is passed into the lower end of the fluidized bed of the air reactor, and the air reactor The bottom chamber is in a bubbling fluidized state; elemental Fe and Ni are oxidized to Fe by air 2 o 3 with NiO; Fe 2 o 3 NiO and NiO enter the riser of the air reactor through the transition section of the air reactor, and are lifted by the air to the air cyclone separator, and the gas-solid two-phase is separated by the air cyclone separator; Separator outlet escapes; separated solid is Fe 2 o 3 With NiO, water vapor is passed at the bottom of the second overflow tank as loosening wind, Fe 2 o 3 and NiO enter the fuel reactor through the feed pipe and the second overflow tank, and the temperatur...

Embodiment 2

[0040] A kind of realization claim 1 based on Fe 2 o 3 -NiO mixture for hydrogen production and CO separation 2 The device is characterized in that: it is composed of a steam reactor fluidized bed, a fuel reactor and an air reactor fluidized bed; the steam reactor fluidized bed is composed of a steam reactor bottom chamber, a steam reactor transition section and The riser of the steam reactor is composed of the steam reactor riser; the riser of the steam reactor is connected with the bottom chamber of the steam reactor through the transition section of the steam reactor, and the upper end of the riser of the steam reactor is connected with a hydrogen cyclone separator, and the hydrogen cyclone separator passes through The feeding pipe is connected to the third overflow tank, and the third overflow tank is connected to the fluidized bed of the air reactor; the fluidized bed of the air reactor is composed of the bottom chamber of the air reactor, the transition section of the a...

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Abstract

The invention discloses a method and a device for preparing hydrogen and separating CO2 based on Fe2O3-NiO mixture. The method comprises the following steps that: Fe2O3 and NiO are introduced to a fuel reactor and reduced by fuel gases to obtain gas products of CO2 and steam, and the gas products are condensed to separate water and obtain pure CO2, wherein the solid products in the fuel reactor are FeO, Fe and Ni; FeO, Fe and Ni are introduced into a steam reactor fluidized bed through an overflowing tank; FeO and Fe react with steam to generate hydrogen and Fe3O4, Ni does not react with steam, gas-solid product is separated by a cyclone separator, and the gas product is condensed to separate water and obtain pure hydrogen; and unreacted Ni and the solid product Fe3O4 in the steam reactorfluidized bed are introduced into an air reactor fluidized bed, oxidation reaction is carried out on Fe3O4 and Ni and air to generate Fe2O3 and NiO, simultaneously heat is released, and Fe2O3 and NiOare returned to the fuel reactor for recycling.

Description

technical field [0001] The invention relates to a method and device for producing hydrogen from fuel, in particular to a Fe-based 2 o 3 -NiO mixture for hydrogen production and CO separation 2 methods and devices. Background technique [0002] Efficient and clean utilization of energy is one of the strategies to achieve sustainable energy development. As a clean energy source, hydrogen is accompanied by water as a product in the process of energy conversion, which can truly achieve zero emission of pollutants. Hydrogen can be burned directly to generate electricity, heat, or converted into electricity through fuel cells. With the increasingly serious problems of "oil security", "greenhouse effect" and "environmental protection" in the world, in order to reduce the dependence on oil, strengthen the capture and storage of carbon dioxide, and reduce the impact of greenhouse gases on the environment, in the future In sustainable energy systems, hydrogen is expected to becom...

Claims

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Application Information

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IPC IPC(8): C01B3/10C01B31/20C01B32/50
CPCY02A50/20Y02E60/36
Inventor 向文国陈时熠王东薛志鹏
Owner SOUTHEAST UNIV