Argon microwave discharge plasma assisted methane and air swirling combustion device and method

Abstract

The invention discloses an argon microwave discharge plasma assisted methane and air swirling combustion device and method. Through the synergistic effect of microwave discharge and swirling combustion, under the condition of the atmospheric pressure, argon microwave discharge plasma assisted methane and air mixed gas efficient combustion is achieved. The argon microwave discharge plasma assistedmethane and air swirling combustion device comprises a microwave power source, a microwave anti-reflux device, a three-pin distributor, a conversion waveguide, a microwave resonant cavity and a swirling combustor; the microwave power source drives microwaves to discharge, and the microwaves sequentially pass through the microwave anti-reflux device, the three-pin distributor and the conversion waveguide and then enter the microwave resonant cavity to form atmospheric pressure argon microwave discharge plasma in the microwave resonant cavity; and methane and air tangently enter the swirling combustor through a gas inlet, and are combusted in the swirling combustor under assisting of the microwave argon discharge plasma.

Description

technical field [0001] The disclosure relates to an argon microwave discharge plasma assisted methane air swirl combustion device and method. Background technique [0002] The fossil energy crisis is an important issue facing the development of modern society. With the sharp reduction of fossil fuel reserves, how to efficiently use fossil fuels has become an important issue that human society needs to solve urgently. [0003] Lean Premixed Combustion (Lean Premixed Combustion) technology, as a high-efficiency, low-pollution combustion technology, has attracted extensive attention from researchers at home and abroad in recent years. Lean fuel premixed combustion with high thermal efficiency, CO and NO x Low emissions, good combustion economy and combustion effect. However, when the ratio of fuel to air approaches the lean burn limit (mass ratio of fuel to air 1:25), the energy required to start combustion increases, the flame propagation speed decreases, and the stability ...

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Problems solved by technology

[0007] (1) It is relatively simple to achieve a stable gas discharge at low pressure, but it is impossible to generate a large area of ​​uniform discharge plasma at atmospheric pressure

[0008] (2) The existing swirl burners are relatively complicated, and most of them require additional mechanical control components

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