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

A mixture, fe2o3 technology, applied in the direction of carbon compounds, chemical instruments and methods, hydrogen, etc., can solve problems such as ecological environment damage

Inactive Publication Date: 2013-01-09
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

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Experimental program
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Effect test

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 2The 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 ai...

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Abstract

The invention discloses a method and a device for producing hydrogen and separating CO2 based on Fe2O3-NiO mixture. Fe2O3 and NiO enter the fuel reactor and are reduced by the fuel gas. The gas products are CO2 and water vapor. After condensation and separation of the water, pure CO2 is obtained; the solid products in the fuel reactor are FeO, Fe and Ni; FeO, Fe Ni enters the steam reactor fluidized bed through the overflow tank; FeO, Fe reacts with water vapor to generate Fe3O4 and hydrogen, Ni does not react with water vapor, and the gas-solid products are separated by a cyclone separator, and the gas products are condensed and separated After water, pure hydrogen is obtained; unreacted Ni and solid product Fe3O4 in the fluidized bed of the steam reactor enter the fluidized bed of the air reactor, and Fe3O4, Ni and air undergo oxidation reactions to form Fe2O3 and NiO, and release heat at the same time , Fe2O3 and NiO enter the fuel reactor again to realize 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 beco...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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