Biomass-gasifying hydrogen generating serial fluid bed apparatus and method

A hydrogen production device and biomass technology, applied in the direction of granular/powder fuel gasification, hydrogen production, etc., can solve the problem of low heat and mass transfer rate of biomass and catalyst, carbon surface area of ​​catalyst particles, difficult to achieve high efficiency of biomass Hydrogen production and other issues

Inactive Publication Date: 2005-04-27
SOUTHEAST UNIV
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Problems solved by technology

[0005] The existing biomass water vapor catalytic pyrolysis/gasification reactors for hydrogen production use fixed beds and fluidized beds. In fixed bed reactors, the heat and mass transfer rate between biomass and catalyst is low, and it is difficult to quickly pyrolyze biomass. , and the problem of catalyst deactivation is serious; the heat and mass transfer rate in...

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  • Biomass-gasifying hydrogen generating serial fluid bed apparatus and method

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Embodiment Construction

[0013] The serial fluidized bed biomass gasification hydrogen production device of the present invention is composed of a circulating fluidized bed 1 , a cyclone separator 2 and a bubbling fluidized bed 3 connected in series. The upper part of the circulating fluidized bed 1 is connected with the upper part of the cyclone separator 2, the lower part of the circulating fluidized bed 1 is connected with the bubbling fluidized bed 3, and the lower part of the circulating fluidized bed 1 is also provided with a biomass particle feeding port B, The bottom of the circulating fluidized bed 1 is provided with a water vapor inlet A, and the bed material in the circulating fluidized bed 1 is calcium oxide / magnesia catalyst particles 11; the top of the cyclone separator 2 is a hydrogen-rich gas outlet C, and the cyclone separates The discharge pipe 21 at the lower part of the device 2 is inserted into the bubbling fluidized bed 3; the top of the bubbling fluidized bed 3 is the flue gas ou...

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Abstract

The present invention is one method of generating hydrogen via catalytic thermolysis and gasification of biomass. The hydrogen generating apparatus consists of circulating fluidizing bed, cyclonic separator and bubbling fluidizing bed connected serially. The hydrogen generating process the fluidization of biomass with steam in circulating fluidizing bed with catalyst CaO/MgO grains; the catalytic thermolysis and gasification of biomass to produce hydrogen; the fixation reaction of CO2 in gas product with catalyst CaO/MgO grains to form CaCO3/MgCO3; the separation of CaCO3/MgCO3 grains and coke grains in cyclonic separator; burning of coke grains to promote the decomposition of CaCO3/MgCO3 to release CO2 and high temperature CaO/MgO grains; and returning the high temperature CaO/MgO grains to the circulating fluidizing bed as catalyst and heat source.

Description

technical field [0001] The invention relates to a hydrogen production device and method for biomass catalytic pyrolysis gasification, in particular to a biomass hydrogen production device and method using a circulating fluidized bed. Background technique [0002] Hydrogen is not only an important industrial raw material, but also recognized as the most ideal future clean energy carrier. The production, processing and transportation of fossil fuels (coal, oil, natural gas) will cause varying degrees of pollution to the environment, and the gases such as carbon dioxide and sulfur dioxide generated by their combustion will produce greenhouse effect and acid rain respectively; hydrogen production by using renewable biomass resources , to ensure the security of energy supply and meet the requirements of sustainable development of industrial and agricultural production. [0003] As a low-carbon clean fuel, biomass has high volatile content, high carbon...

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Application Information

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IPC IPC(8): C01B3/02C10J3/46
Inventor 沈来宏肖军
Owner SOUTHEAST UNIV
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