Process of catalyzing and gasifying fresh substance by solid thermophore for preparing hydrogen-rich gas

A solid heat carrier, catalytic gasification technology, applied in the manufacture of combustible gas, chemical instruments and methods, hydrogen, etc., can solve the problems of not finding a process, reducing hydrogen production rate, hydrogen consumption, etc., to improve the conversion rate of biomass carbon , Inhibit the effect of catalyst carbon deposition

Inactive Publication Date: 2004-03-17
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although a lot of research work on hydrogen from biomass has been devoted to the improvement of traditional devices and processes, no more efficient process has been found, and whether it is a fixed bed or a fluidized bed, the heat required by the system is part of the biomass provided by combustion, thus consuming part of the hydrogen in the biomass and reducing the hydrogen yield

Method used

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  • Process of catalyzing and gasifying fresh substance by solid thermophore for preparing hydrogen-rich gas
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  • Process of catalyzing and gasifying fresh substance by solid thermophore for preparing hydrogen-rich gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The biomass (apricot core) is crushed and sieved, and the biomass with a particle size of 8-16 meshes is selected and placed in a biomass tank. The catalyst (dolomite) is crushed to a certain particle size and then sieved, and the raw ore of 12 to 16 mesh is calcined in a muffle furnace at a calcination temperature of 900°C for 4 hours, and then put into a catalyst tank. Start the electromagnetic speed-regulating motor, add biomass and catalyst to the falling-bed reactor, control the reaction temperature to 750°C, and the value of the steam / biomass ratio to 0.8. The indicators of gas composition and yield are shown in Table 1.

Embodiment 2

[0035] Control reaction temperature is 800 ℃, all the other are the same as embodiment 1.

Embodiment 3

[0037] Control reaction temperature is 850 ℃, all the other are the same as embodiment 1.

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Abstract

The present invention relates to the method of extracting hydrogen from biomass, and is especially the solid heat carrier catalyzing and gasifying method of preparing hydrogen-rich gas from biomass.The method includes mixed heating of solid heat carrier catalyst and biomass, fast thermolysis of biomass, catalytic gasifying and regeneration circulation of solid catalyst grain. The catalyst as solid heat carrier has accumulated heat for gasifying biomass. The technological apparatus consists of mobile bed reactor, material feeder, regenerating riser tube, catalyst storage tank, etc. The present invention makes the hydrogen in biomass converted into hydrogen gas at most, and the continuous switch-less regeneration of catalyst solves the problem of fast deactivation of catalyst. The present invention has low tar content, simple operation and high gas product purity, and is new technological process with great potential.

Description

Technical field [0001] The invention relates to a method for extracting hydrogen from biomass, in particular to a method for preparing hydrogen-rich gas by catalytically gasifying biomass with a solid heat carrier. Background technique [0002] Hydrogen is an important chemical raw material and a clean fuel that can be used in fuel cells and internal combustion engines. Hydrogen is mainly derived from two pathways, namely water electrolysis and conversion of hydrocarbons. At present, the main process of hydrogen production is steam catalytic reforming of natural gas (methane), low-carbon hydrocarbons or naphtha, and partial oxidation of heavy oil residue and coal gasification are also optional processes. The hydrogen production process based on natural gas or other fossil fuels is restricted by the supply of raw materials. In the long run, the raw materials for hydrogen production should be based on renewable resources. [0003] Biomass (including wood, crop straw, etc.) i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/02C01B3/34C10B49/00C10J3/00
CPCY02E20/18Y02P20/584
Inventor 徐绍平胡冠李世光刘淑琴张洪岗魏立刚
Owner DALIAN UNIV OF TECH
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