Rapidly started self-heating type micro-reactor for producing hydrogen by reforming methanol

Abstract

The invention discloses a rapidly-started self-heating type micro-reactor for producing hydrogen by reforming methanol. The micro-reactor is formed by sequentially assembling a cover plate assembly, a reforming hydrogen production plate, a first methanol combustion plate, a methanol combustion porous plate and a second methanol combustion plate in a sealing manner from top to bottom, wherein a methanol reforming cavity is formed in the reforming hydrogen production plate, the reforming hydrogen production plate is loaded with a reforming catalyst and is used for producing hydrogen by reforming methanol; the first methanol combustion plate has a methanol catalytic combustion cavity loaded with a combustion catalyst to supply heat through the combustion of methanol; and the methanol is combusted to supply energy for producing hydrogen by reforming methanol, so as to realize the self-heating operation of the micro-reactor. According to the micro-reactor, combustion fuels including methanol and air are independently supplied, so that the air inflow of a combustion chamber and the use efficiency of the catalyst are improved, and the starting time of the micro-reactor is shortened. The micro-reactor is short in starting time, compact in structure, high in energy density and hydrogen production efficiency, low in manufacturing cost and easy in assembling of an integral structure and can be applied to occasions for producing hydrogen by reforming middle and small flow of methanol so as to directly supply hydrogen to hydrogen fuel cells.

Description

technical field [0001] The invention relates to a self-heating micro-reactor for methanol hydrogen production, in particular to a quick-start self-heating micro-reactor for hydrogen production by reforming methanol. technical background [0002] Hydrogen fuel cells have the advantages of compact structure, high energy conversion efficiency, and low pollution emissions, and have broad application prospects in vehicles, ships and other vehicles. However, the hydrogen required by hydrogen fuel cells is a secondary energy source, which needs to be converted into other energy sources. An effective way is to supply hydrogen by on-site reforming hydrogen production, that is, using self-heating methanol reforming hydrogen production micro-reactor to produce hydrogen on-site reforming to supply hydrogen for hydrogen fuel cells. Due to the use of liquid fuels similar to gasoline, on-site reforming hydrogen production does not have the disadvantages of direct hydrogen supply from high...

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Problems solved by technology

Moreover, in the present invention, air and methanol are contacted in sections when the gas flows in the reaction channel, which can avoid problems such as large amount of fuel at the inlet and local high temperature caused by violent reaction, and can also homogenize the temperature of the combustion channel of the microreactor , improve combustion efficiency and catalyst life

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