Miniature premix catalytic reforming combustor

Abstract

The invention discloses a miniature premix catalytic reforming combustor. A combustor body is provided with air inlets, a premix chamber, a combustion chamber and an air outlet from top to bottom; the air inlets comprise an air inlet and gas inlets uniformly distributed around the air inlet; the air inlet and the gas inlets are respectively communicated with the premix chamber which is communicated with the combustion chamber; the combustion chamber is communicated with the air outlet; the bottom of the combustor body is provided with an ignition hole communicated with the combustion chamber; the top and the bottom of the combustion chamber are respectively provided with annular rib plates which are staggered; and the surfaces of the combustion chamber and the rib plates are coated with a Pt / gamma-Al2O3 catalyst. The inside of the combustion chamber is provided with staggered annular rib plates, the gas combusting time in the combustion chamber is prolonged, and the catalytic combustion area in the combustion chamber is increased; and the micro-space heat exchange is fully utilized to realize cyclic utilization of heat, the radiating loss is reduced, the ignition of fuel is improved, and the combustion stability is improved, so that the micro combustion is more full; therefore, the high-efficiency combustion and low-pollution emission are realized.

Description

technical field [0001] The invention relates to a miniature high-efficiency burner, in particular to a miniature premixed catalytic reforming burner which performs catalytic reforming and catalytic combustion of premixed air and gas at the same time. Background technique [0002] With the rapid development of high technologies such as micro-satellites, micro-aircraft, micro-sensors, micro-mobile devices, micro-robots, micro-scientific instruments and other micro-equipment, higher requirements are put forward for micro-power electromechanical systems. Among them, micro-engines, micro-turbines, and micro-rotor engines are the key components and core devices of micro-power electromechanical systems. Their common feature is to use hydrogen and hydrocarbon fuels to burn and release heat in a micro-combustor. This micro-combustion device using hydrocarbon as fuel has the advantages of high energy density, long life, small size, light weight, low cost, low environmental pollution, ...

AI Technical Summary

Problems solved by technology

This causes the entire combustion device to be relatively large and the structure is not compact.

In addition, the gas flow rate in micro-combustion is low, which basically belongs to laminar flow, and the mixing of air and fuel gas is difficult, which is not conducive to the combustion reaction.

In addition, conventional flame combustion is also difficult to carry out stably at the micro scale, and compared with flameless combustion, the luminescence of flame combustion will lose more energy

The combustion efficiency is not high, and the combustion products will contain more carbon monoxide and methane, which is also a kind of pollution to the environment

Images