Hydrocarbon fuel reforming combustion method for micro combustor and micro combustor

Abstract

The invention discloses a hydrocarbon fuel reforming combustion method for a micro combustor, which comprises the following steps: firstly, introducing gaseous hydrocarbon fuel and wet air into a reforming area filled with a gamma-Al2O3 catalyst to produce coupling self-heating reforming reaction so as to generate partial hydrogen; and then introducing the gas after the reaction into a combustion cavity for combusting, wherein the volume ratio of the gaseous hydrocarbon fuel to the wet air is 1: 1.2-1: 1.6. Meanwhile, the invention also discloses a device for implementing the method. The front end of the combustion cavity is provided with the reforming area, the gaseous hydrocarbon fuel and the wet air are introduced into the reforming area, and the gaseous hydrocarbon fuel and the wet air undergo the coupling self-heating reforming reaction (comprising the oxidation reaction of the hydrocarbon fuel and the oxygen and the reforming reaction of the hydrocarbon fuel and the water vapor) under the action of the gamma-Al2O3 catalyst to generate partial hydrogen so as to aid the efficient and stable combustion of the gaseous hydrocarbon fuel and the air in a combustion area.

Description

technical field [0001] The invention relates to a hydrocarbon fuel combustion method and a micro-combustion device, in particular to a hydrocarbon fuel reforming combustion method and a micro-combustor for a micro-combustor. Background technique [0002] In recent years, micro-electromechanical devices that use micro-combustors as front energy conversion units, such as: micro-engines, micro-turbines, micro-thermoelectric systems, micro-photoelectric systems, etc., have a volume of less than 1cm 3 Left and right, the power range is 10-100W, and their common feature is to use hydrogen or hydrocarbon gas as fuel, burn and release heat in a micro burner, and then output energy through a motion unit or a thermal (photoelectric) conversion material. [0003] This kind of micro-electromechanical device using hydrogen and hydrocarbon as fuel has significant advantages such as high energy density, long life, small size, light weight, simple structure, and low cost. The energy densit...

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Problems solved by technology

[0007] Aiming at the above-mentioned deficiencies in the prior art, the purpose of the present invention is to solve the problems of the prior art micro-combustion such as too short fuel residence time, serious heat loss, unstable combustion, etc. Whole combustion method

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