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Method and device for preparing hydrogen by using fuel

A technology of hydrogen and fuel, which is applied in the direction of steam engine devices, manufacturing combustible gas, chemical instruments and methods, etc., can solve the problems of ecological environment damage, achieve the effect of light content and reduce energy consumption

Inactive Publication Date: 2010-03-17
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the process of energy conversion to hydrogen energy emits a large amount of CO 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 by using fuel
  • Method and device for preparing hydrogen by using fuel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A method for producing hydrogen from coal, characterized in that iron or iron oxides are placed in an air reactor fluidized bed, fluidized air is introduced at the lower end A of the air reactor fluidized bed, and the operating temperature of the air reactor fluidized bed can be Controlled at about 800°C ~ 1250°C, iron or iron oxide reacts with oxygen in the air to obtain Fe 2 o 3 , and then the gas-solid two-phase is separated by the separator, and the separated air is discharged from the upper end H of the separator and can be used for power generation or waste heat utilization. The separated Fe 2 o 3 It enters the upper layer of the fuel reactor through the first overflow tank, and the operating temperature of the fuel reactor can be controlled at about 800 ° C ~ 1200 ° C. In the upper layer of the fuel reactor, some Fe 2 o 3 React with the incompletely reacted synthesis gas in the lower layer to convert to Fe 3 o 4 , and convert the synthesis gas into a carbon ...

Embodiment 2

[0039] A method for producing hydrogen from natural gas, characterized in that iron or iron oxides are placed in an air reactor fluidized bed, fluidized air is introduced at the lower end A of the air reactor fluidized bed, and the operating temperature of the air reactor fluidized bed is It can be controlled at about 800 ° C ~ 1250 ° C, and iron or iron oxides react with oxygen in the air to obtain Fe 2 o 3 , and then the gas-solid two-phase is separated by the separator, and the separated air is discharged from the upper end H of the separator and can be used for power generation or waste heat utilization. The separated Fe 2 o 3 Enter the upper layer of the fuel reactor through the first overflow tank 2, and the operating temperature of the fuel reactor can be controlled at about 800 ° C ~ 1200 ° C. In the upper layer of the fuel reactor, some Fe 2 o 3 React with the incompletely reacted gaseous fuel (natural gas or petroleum gas) in the lower layer to convert to Fe 3 o ...

Embodiment 3

[0041] A method for producing hydrogen using fuel, a device for implementing the method for producing hydrogen using fuel according to claim 1, comprising an air reactor fluidized bed 1, a first overflow tank 2, a fuel reactor 3, The second overflow tank 4, the hydrogen production reactor fluidized bed 5, and the third overflow tank 6 are composed. The upper end of the air reactor fluidized bed 1 is connected with an oxygen-deficient air separator 1-4, and an oxygen-deficient air separator 1 The lower end of -4 is connected to the upper layer 3-2 of the fuel reactor through the first overflow tank 2. The fuel reactor includes a fluidized bed, and an intermediate air distribution plate 3-3 is arranged in the fluidized bed and the intermediate air distribution plate The plate 3-3 divides the fluidized bed into the upper layer 3-2 of the fuel reactor and the lower layer 3-6 of the fuel reactor, and an overflow pipe 3 is arranged between the upper layer 3-2 of the fuel reactor and ...

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Abstract

The invention discloses a method and a device for preparing hydrogen by using fuel, and the method comprises the following steps: placing iron or iron oxide in an air reactor fluidized bed; reacting with introduced air to obtain Fe2O3; separating by a separator; feeding the separated Fe2O3 in a fuel reactor; feeding solid fuel in the fuel reactor by a spiral feeder if the solid fuel is used; carrying out gasification reaction with water vapour to generate synthesis gas; generating carbon dioxide and water vapour by a reduction reaction in which synthesis gas or solid fuel reacts with Fe2O3; obtaining clean carbon dioxide after condensation; reducing Fe2O3 to FeO or Fe; feeding FeO or Fe in a hydrogen production reactor fluidized bed; generating hydrogen by reacting FeO or Fe with water vapour; oxidizing FeO or Fe to Fe3O4; separating by the separator; discharging the separated hydrogen from the upper end of the separator; returning the separated Fe3O4 in an air reactor fluidized bed for further oxidation; and realizing cyclic usage.

Description

technical field [0001] The invention relates to a method and device for producing hydrogen by gasification or directly by utilizing fuel, in particular to a method and device for producing hydrogen by using fuel. Background technique [0002] One of the sustainable development strategies of energy utilization is to realize the efficient and clean utilization of energy. Hydrogen energy is expected to become an energy carrier in the future sustainable energy system due to its many advantages such as cleanliness, high efficiency, and various utilization forms. The utilization efficiency of hydrogen energy is relatively high. Unfortunately, most of the hydrogen in nature exists in a combined state. As a secondary energy source, it must be produced from other primary energy sources. my country is a large energy-consuming country dominated by coal. Under this basic national condition, fuel will still play a very important role in the selection of hydrogen sources in the next half...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/06C01B3/10C01B31/20F01K27/02F01D15/10C10J3/00C01B32/50
CPCY02E20/18Y02E60/36
Inventor 向文国薛志鹏王新
Owner SOUTHEAST UNIV
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