A controllable evaporative micro burner utilizing waste heat of flue gas

Abstract

The invention relates to a controllable evaporative micro-burner using waste heat of flue gas. The controllable evaporative micro-burner using the waste heat of the flue gas comprises a burner outer cylinder, an evaporation core is arranged on the inner surface of the lower end of the burner outer cylinder, an oil tank is formed between the evaporation core and the side wall of the burner outer cylinder, the evaporation core is internally provided with a steam channel, a steel wire mesh is fixedly installed on the upper end face of the evaporation core, and a flame lighter is arranged on the upper part of the steel wire mesh; a burning chamber is arranged on the upper part of the evaporation core, heat accumulators are fixedly installed on the positions, close to the inner surface of the side wall of the burner outer cylinder, above the burning chamber, the outer wall of the burner outer cylinder corresponding to the heat accumulators is the burner working wall surface, and heat pipesare fixedly inserted in the heat accumulators. According to the controllable evaporative micro-burner using the waste heat of the flue gas, it can be ensured that the temperature of the burner workingwall surface is stable, the degree of fuel burning can be increased, and use of thermal energy is increased.

Description

technical field [0001] The invention belongs to the technical field of energy combustion and utilization, and in particular relates to a controllable evaporative micro burner utilizing waste heat of flue gas. Background technique [0002] The micro-thermo-photovoltaic system is one of the emerging new micro-power systems, and the most important component in the micro-thermo-photovoltaic system is a micro-burner that can make liquid hydrocarbon fuels burn stably and efficiently. Micro-scale combustion has different characteristics from conventional-scale combustion, which are mainly reflected in three aspects. First, the ratio of surface area to volume of the burner increases, which is two to three orders of magnitude higher than that of traditional burners. The increase in the ratio of surface area to volume causes Heat loss increases. The second is that the reduced size results in a short residence time, making it more difficult to completely burn the fuel, and the combust...

AI Technical Summary

Problems solved by technology

Micro-scale combustion has different characteristics from conventional-scale combustion, which are mainly reflected in three aspects. First, the ratio of surface area to volume of the burner increases, which is two to three orders of magnitude higher than that of traditional burners. The increase in the ratio of surface area to volume causes Increased heat loss

The second is that the residence time is short due to the reduction in size, and it is more difficult to completely burn the fuel. The combustion organization is not good, and a large amount of fuel will be discharged directly with the exhaust gas without burning, reducing the combustion efficiency.

Based on the above three points, it is difficult to operate continuously and efficiently at the micro scale

The existing various burners, through the reasonable design of the internal circulation structure and the design of the combustion method, have improved the residence time of the fuel to a certain extent and increased the heat exchange efficiency of the burner, but neglected the work of the micro burner. Wall thermal stability and reasonable working wall temperature

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