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Method and apparatus for catalytic preparation of hydrogen by biomass down-draft gasifying stove

A gasification furnace and biomass technology, applied in chemical instruments and methods, hydrogen production, solid waste removal, etc., to achieve sustainable utilization, improve biomass conversion rate and energy utilization efficiency, and prolong life

Inactive Publication Date: 2004-09-15
广州中科环能科技有限公司
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Using a downdraft gasifier to produce hydrogen from biomass, and adding a catalyst during the gasification process to maximize hydrogen production, this method has not been reported so far

Method used

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  • Method and apparatus for catalytic preparation of hydrogen by biomass down-draft gasifying stove

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Embodiment Construction

[0025] Such as figure 1 As shown, the biomass (such as pine powder) in the silo 2 enters the gasifier from the top of the downdraft gasifier reactor 3 through the screw feeder 1, passes through the drying zone and the pyrolysis zone, and is combined with the gasifier from the gasifier. Partial combustion reaction occurs with the enriched oxygen fed into the throat of the gasifier, and the enriched oxygen is supplied by the oxygen generator 4 connected to the gasifier 3; the water vapor generated in the steam generator 5 enters the reduction zone of the gasifier 3, mainly producing Tar cracking reaction, coke gasification reaction and steam reforming reaction of biomass gasification gas, wherein the catalyst for tar cracking reaction is natural ore dolomite, and the catalyst for steam reforming reaction is nickel-based catalyst; from the bottom of gasifier 3 The gas that comes out is deashed, and the dust accumulated in the ash hopper 6 is discharged regularly. After deashing, ...

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Abstract

The invention discloses a raw matter down absorbing gasification furnace catalysis hydrogen producing method, including the steps: raw matter is added in from the top of the gasification furnace, and after dried and pyrolyzed, makes an incomplete combustion reaction with the rich oxygen fed from the gasification furnace, to give out heat, during descending, the produced gas makes a water vapor reforming reaction and a tar fission reaction with the water vapor fed from the reducing region, the gas coming from the bottom of the gasification furnace again passes through the fixed bed catalytic reactor to make a further tar fission reaction, to produce a hydrogen-rich gas, which is made into high-purity hydrogen by variable pressure absorption. It also discloses a device to implement the above method. It has high conversion and energy utilization ratio, without discharging waste water and residue; the needed raw matter is rich.

Description

Technical field [0001] The invention relates to a method for catalytic hydrogen production from biomass and a device for realizing the method. Background technique [0002] Hydrogen is an extremely ideal secondary energy source, which has the characteristics of high combustion calorific value, clean and pollution-free, and a wide range of applications. At present, hydrogen is widely used in chemical, food, smelting, aviation, transportation and other fields. With the expansion of the scope of hydrogen application and the growth of demand for hydrogen energy, various countries have accelerated the development and research of hydrogen energy. According to the 2002 U.S. Congressional Budget Report: In the process of hydrogen energy research and development, the U.S. Department of Energy put forward the basic principles of safety, efficiency, economy and environmental friendliness, and cooperated with national laboratories and universities to research and develop biomaterials. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00C01B3/02C01B3/22C01B3/32C01B3/38C10G47/00C10G47/02
CPCY02P20/52
Inventor 吕鹏梅常杰熊祖鸿王铁军
Owner 广州中科环能科技有限公司
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