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Double-cathode double-medium gas plasma burner

A plasma and burner technology, which is applied to gas fuel burners, burners, combustion methods, etc., can solve the problems of large power consumption of secondary energy, reduce power consumption, wide operating conditions, and increase the flame temperature adjustment range. Effect

Pending Publication Date: 2018-04-10
SHENWU TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main heat supply of the existing plasma burner is to ionize the medium gas through electric energy to generate thermal plasma, and to supply heat through the thermal plasma, which consumes a huge amount of electric energy as a secondary energy source.

Method used

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  • Double-cathode double-medium gas plasma burner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The operating voltage is 80V, the current is 150A, the gas uses air and natural gas as the medium gas, and the designed power of the burner is 10kw. Test results: The thermal power provided by plasma is 6.3kw, the thermal power provided by combustion is 4.6kw, the actual operating power is 9.9kw, which is basically the same as the design power, the temperature after combustion is about 2550°C, and the ignition can be stabilized after repeated ignition experiments Combustion, the air-fuel ratio is controlled between 1:1.1~1.3, the gas flow rate is 20L / min, the cooling water volume is 15L / min, and the cooling water level difference is about 1°C.

Embodiment 2

[0052] When the operating voltage is 80V and the current is 200A, air and natural gas are used as the medium gas respectively, and the designed power of the burner is 10kw. Test results: The thermal power provided by plasma is 7.2kw, the thermal power provided by combustion is 2.7kw, the actual operating power is 9.9kw, which is basically the same as the design power, the temperature after combustion is about 2850°C, and the ignition can be stabilized after repeated ignition experiments Combustion, the air-fuel ratio is controlled between 1:1.1~1.3, the gas flow rate is 20L / min, the cooling water volume is 15L / min, and the cooling water level difference is about 1.5°C.

Embodiment 3

[0054] The operating voltage is 80V, the current is 100A, the gas uses air and natural gas as the medium gas, and the designed power of the burner is 10kw. Test results: The thermal power provided by plasma is 5.2kw, the thermal power provided by combustion is 4.2kw, the actual operating power is 10kw, which is basically the same as the design power, the temperature after combustion is about 2250 ℃, repeated ignition experiment ignition, all can burn stably , the air-fuel ratio is controlled between 1:1.1~1.3, the gas flow rate is 20L / min, the cooling water volume is 15L / min, and the cooling water level difference is about 0.8°C.

[0055] In summary, the double-cathode double-medium gas plasma burner of the present invention adopts a double-cathode double-medium plasma burner, which can cancel the traditional ion rod electric spark ignition and the traditional gas burning lamp ignition, making the ignition method more convenient; When the flame temperature is high, part of the...

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Abstract

The invention specifically relates to a dual-cathode dual-medium gas plasma burner, comprising: a burner shell, a first cathode, a second cathode and an anode, and the traditional ion rod electric spark ignition and traditional gas long-bright lamp ignition are cancelled, so that the ignition method is It is more convenient; in the case of high flame temperature, part of the chemical energy can be used to replace the electrical energy consumption, reducing the electrical energy consumption by 30% to 40%; the burner structure can be designed more compactly, and the flame temperature adjustment range can be increased, making it The applicable working conditions are wider.

Description

technical field [0001] The invention belongs to the technical field of plasma burners in petrochemical, metallurgy and electric power industries, and in particular relates to a double-cathode double-medium gas plasma burner. Background technique [0002] Plasma refers to a highly active substance containing a large number of electrons, ions, excited molecules, atoms and free radicals produced by ionization of gas, also known as the "fourth state" of matter. The temperature range of low-temperature plasma is from several thousand to Tens of thousands of degrees, that is, thermal plasma. Thermal plasma is used in industry. It can be used as an ignition gun for pulverized coal boilers, gasification of garbage and solid waste, etc., ignition and stable combustion of gas turbines, and hydrogen production in chemical industry. There has also been a great deal of research on the use of thermal plasmas to prepare materials such as graphene. [0003] At present, the plasma burner as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D14/20F23D14/68
CPCF23D14/20F23D14/68
Inventor 吴道洪石为华郭科宏宋敏洁王东方
Owner SHENWU TECH GRP CO LTD
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