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A Microscale Enhanced Combustion Method for Increasing Oxygen Ion Concentration in Flame

A micro-scale combustion and combustion method technology, applied in the direction of combustion methods, burners, burners, etc., can solve the problems of large ratio, poisoned surface, complex structure, etc., achieve simple processing and installation, increase combustion intensity, and increase stable combustion extreme effect

Active Publication Date: 2021-01-12
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The size of the burner for micro-scale combustion is on the order of millimeters or centimeters, and the direct combustion of hydrocarbons can reach tens of watts. Compared with conventional combustion, it has the following challenges: 1) The size of the combustion chamber is close to or smaller than The quenching distance of the fuel, the flame instability increases sharply
2) The ratio of the surface area to the volume of the combustion chamber is extremely large, and the heat loss is greater and it is easy to extinguish the flame
3) The residence time of the fuel is short and the combustion efficiency is low, so the fuel blowout limit and the stable combustion range are greatly reduced
[0003] In response to these shortcomings of micro-scale combustion, researchers at home and abroad have conducted extensive research, mainly through technical means such as wall heat reflow and fuel catalysis to improve the stability and flammability limit of micro-scale flames, but there are complex structures, difficult processing and catalysts. Poisoning and surface pollution and other issues, therefore, the new high-efficiency micro-scale stable combustion technology is the primary problem facing the development of micro-energy power systems

Method used

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  • A Microscale Enhanced Combustion Method for Increasing Oxygen Ion Concentration in Flame

Examples

Experimental program
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Effect test

Embodiment 1

[0021] A micro-scale burner that increases the concentration of oxygen ions in the flame. The micro-channel combustion system is composed of a square micro-channel wall, a burner, a fixed bracket, and a wall heater. The square micro-channel wall is movable to ensure the combustion flame and the wall material. The close contact of square microchannels is adjustable in the range of 2-6mm; the wall material is solid metal oxide, and the metal oxide is selected from Zr 2 O, Al 2 o 3 , BaO, MgO, Y 2 o 3 、Dy 2 o 3 , CeO 2 、Sm 2 o 3 、TiO 2 , CuO, V 2 o 5 , MnO and La 2 o 3 one or more of them.

[0022] The schematic diagram of oxide material enhanced micro-scale combustion technology proposed by the present invention is as follows figure 1 shown. When the micro-scale burner is working normally, the hydrocarbon fuel C is injected from the nozzle tube x h y and oxygen O 2 After ignition, a flame is formed in the micro-burner. At this time, the high-temperature flame a...

Embodiment 2

[0026] Same as Example 1, except that the microchannel wall surface material is composed of a composite material with a mass fraction of 15% yttrium oxide and a mass fraction of 85% zirconia.

Embodiment 3

[0034] Same as Example 2, except that the wall material of the microchannel is made of alumina.

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Abstract

The invention discloses a micro-scale intensified combustion method for increasing oxygen ion concentration in flame. According to the micro-scale intensified combustion method, a solid metal oxide material layer is arranged in a combustion region of a micro-scale burner, and the metal oxide is selected from one or more of Zr2O, Al2O3, BaO, MgO, Y2O3, Dy2O3, CeO2, Sm2O3, TiO2, CuO, V2O5, MnO and La2O3. According to the micro-scale enhanced combustion method for increasing the oxygen ion concentration in the flame, the solid metal oxide material is arranged on the wall surface of the burner toincrease the oxygen ion concentration in the micro-scale flame, so that the stable combustion limit and the combustion intensity of the micro-scale flame are increased.

Description

technical field [0001] The invention relates to the technical field of micro-scale combustion, in particular to a micro-scale enhanced combustion method for increasing the concentration of oxygen ions in a flame. Background technique [0002] The progress of modern science and technology poses challenges to the energy power system of miniaturized equipment such as mobile devices, electronic systems, unmanned aerial vehicles, and individual combat. The micro-power energy system based on micro-scale combustion has high energy and power density, and long battery life. The advantages such as long time have become the most competitive and promising technical system, and the micro-scale combustion is the key to the performance of the micro-energy system. The size of the burner for micro-scale combustion is on the order of millimeters or centimeters, and the direct combustion of hydrocarbons can reach tens of watts. Compared with conventional combustion, it has the following challe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23D14/26F23D14/62F23L7/00
CPCF23D14/26F23D14/62F23D2212/20F23L7/007Y02E20/34
Inventor 曾小军汪小憨杨浩林
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI