Gas fuel oxygen-carried hydrogen-produced and carbon dioxide separation method and device

A carbon dioxide and gas fuel technology, applied in chemical instruments and methods, hydrogen, inorganic chemistry, etc., can solve the problems of large equipment investment and high energy consumption, and achieve the effect of simple device structure, reduced energy consumption, and easy realization.

Active Publication Date: 2008-01-09
TSINGHUA UNIV
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Problems solved by technology

This common method has high energy con

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  • Gas fuel oxygen-carried hydrogen-produced and carbon dioxide separation method and device

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Embodiment Construction

[0022] The principle, technical process and specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0023] Fig. 1 is a schematic diagram of the principle and structure of an embodiment of a gaseous fuel-carrying oxygen production hydrogen and carbon dioxide separation device provided by the present invention. The device comprises a circulating fluidized bed 1, a moving bed 2, a bubbling fluidized bed 4, a hydrogen separator 7, a carbon dioxide separator 6, and the hydrogen separator 7 is arranged at the outlet on the upper part of the circulating fluidized bed, and the hydrogen The bottom of the separator is connected with the lower part of the bubbling fluidized bed 4 through the return leg 5; the carbon dioxide separator 6 is arranged at the outlet of the upper part of the bubbling fluidized bed 4, and the bottom of the separator is connected with the return leg . Both the hydrogen separator 7 and the...

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Abstract

This invention relates to a method for producing hydrogen by using combustible reducing gas as raw material, and using iron/ferrous oxide as oxygen-carrier, during the reaction in a fluidized bed reactor, with coproduct of high concentration carbon dioxide. This invented equipment comprises: a circulation fluidized bed, a moveable bed, a bubbling fluidized bed, a hydrogen separator unit and a carbon dioxide separator. A horn type bucket is used under the bottom of hydrogen separator and connecting the lower part of the bubbling fluidized bed; the bottom of the carbon dioxide separator is connected with horn type bucket; a contraction type bucket is used for connection middle lower part of the bubbling fluidized bed and the moveable bed; the upper part of moveable bed is connected with the middle part of the circulation fluidized bed; the lower ends of the circulation fluidized bed and moveable bed and bubbling fluidized bed are equipped with fluidized steam inlets A and B gas fuel inlet C. This invention has advantages of: simple struction, low cost and high efficiency.

Description

technical field [0001] The present invention relates to a method and a device for producing hydrogen and realizing the separation of carbon dioxide by using an oxygen carrier to replace gas fuel (natural gas / carbon monoxide / coal gas / coke oven gas, etc.) through the oxygen carrier cycle, and especially relates to an iron / Ferrous oxide is used as an oxygen carrier to cyclically replace oxygen to produce hydrogen and carbon dioxide separation method, and iron / ferrous oxide is used as an oxygen carrier to cyclically replace oxygen to produce hydrogen and carbon dioxide separation device. Background technique [0002] With the increasingly serious problem of climate change, the decarbonization of fossil fuels has become an important development direction in energy utilization. How to efficiently and cost-effectively convert gaseous fuels into separated hydrogen and carbon dioxide is a key technology for the decarbonization of gaseous fuels. In addition, the development of fuel ...

Claims

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Application Information

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IPC IPC(8): C01B3/10C01B31/20C01B32/50
CPCY02E60/36
Inventor 李政向文国王明华
Owner TSINGHUA UNIV
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