Micro-miniature catalytic burner taking foam metal as catalyst structure substrate

Abstract

The invention relates to a micro-miniature catalytic burner taking a foam metal as a catalyst structure substrate. The micro-miniature catalytic burner comprises an outer side sleeve, an inner side sleeve A and an inner side sleeve B. Pre-mixed fuels pass through a reactant inlet, a reactant inlet channel and an inlet of a catalytic combustion reaction chamber in sequence, and then enter the catalytic combustion reaction chamber so as to generate catalysis and combustion reaction on the surface of an integral catalyst taking the foam metal as the structure substrate; then, the pre-mixed fuels pass through a product channel inlet, a product channel, a backheating channel inlet, a backheating channel and a tail gas outlet. In a process of flowing a product mixture (high-temperature smoke gas) through the backheating channel, on one hand, most of heat is transmitted to a thermoelectric conversion material on the surface of the outer side sleeve, so that a process of converting heat into electricity is completed; on the other hand, part of heat is transmitted into a pre-mixed recant in the reactant inlet channel, so that microscale combustion stability is improved. The foam metal is taken as the structure substrate of the integral catalyst, so that the activity and the combustion stability of the catalyst are improved.

Description

Technical field: [0001] The invention relates to a miniature catalytic burner, the catalyst inside of which is an integral catalyst using foamed metal as a structural substrate. The device can be used in a fuel-type tiny thermoelectric energy system, thereby realizing the conversion of combustion heat of hydrocarbon fuels into high-grade electric energy, which belongs to the technical field of advanced environmental energy utilization. Background technique: [0002] With the rapid development of social science and technology, various systems and equipment gradually tend to be miniaturized for portability, so they are used as direct driving forces for portable equipment, small pumps and fans, micro valves, micro sensors, and other testing and measuring instruments. At present, the most widely used energy supply system for various micro-equipment is the chemical battery, which is simple and reliable, but has low energy density and short service life, which gradually cannot mee...

AI Technical Summary

Problems solved by technology

[0005] The present invention proposes a micro-catalytic burner using metal foam as a catalyst carrier to overcome difficulties such as large heat loss and easy flameout in the micro-burner, and at the same time improve the interior of the catalytic burner with cordierite honeycomb ceramics as a catalyst carrier Large flow resistance, poor heat transfer effect, small effective catalytic area, etc.

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