Premixing-reinforced micro combustor and combustion method thereof

Abstract

The invention discloses a premixing-reinforced micro combustor. The premixing-reinforced micro combustor comprises an upper sealing cover, a lower sealing cover, an inner sleeve, an outer sleeve, an oil inlet pipeline, an air inlet pipeline and a catalytic grid, wherein the inner sleeve is arranged in an inner cavity of the outer sleeve, the upper sealing cover and the lower sealing cover are installed at the upper opening end and the lower opening end of the outer sleeve, the bottom end of the inner sleeve is connected with the lower sealing cover, a first interval is formed between the top end of the inner sleeve and the upper sealing cover, a second interval is formed between the outer circumferential wall of the inner sleeve and the inner circumferential wall of the outer sleeve, a waste gas outlet is formed in the bottom of the outer sleeve, the oil inlet pipeline and the air inlet pipeline are both arranged between the inner sleeve and the outer sleeve, and the catalytic grid isarranged in the inner sleeve. The invention further discloses a combustion method of the premixing-reinforced micro combustor. The premixing-reinforced micro combustor has the beneficial effects thattail gas is recycled, air and biodiesel are preheated, and the heat loss of the combustor is reduced so that combustion can be stably and efficiently carried out.

Description

technical field [0001] The invention relates to the technical field of micro burners, in particular to an enhanced premixed micro burner and a combustion method thereof. Background technique [0002] In recent decades, based on the urgent demand for high-energy-ratio power for civil or military equipment such as various micro-aircraft, robots, and portable electronic equipment, the focus of current scientific research has gradually shifted from traditional chemical batteries to energy density. Micro-combustion power devices powered by liquid hydrocarbon fuels with an energy density much higher than that of chemical batteries. The main reason is that liquid fuels have the advantages of high energy density, easy transportation and storage, among which biodiesel is a typical "green energy" in liquid fuels, which has the characteristics of good environmental protection, wide sources, and renewable. [0003] However, due to the high viscosity and high density of biodiesel, it is...

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Problems solved by technology

[0003] However, due to the high viscosity and high density of biodiesel, it is difficult for traditional diesel burners to ensure the atomization effect of fuel, resulting in large atomized droplet size and difficulty in evaporation; and insufficient mixing of fuel and air, resulting in difficulty in ignition and poor combustion. complete, low combustion efficiency

At the same time, for micro-burners, the traditional burners that use waste heat recovery from exhaust gas have complex structures, difficult disassembly, difficult cleaning of carbon deposits, and serious wet wall effects

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