Novel water-adding plasma combustion system

Abstract

The invention belongs to the field of plasma combustion systems and particularly discloses a novel water-adding plasma combustion system comprising a plasma generating subsystem, a water feeding subsystem and a combustion chamber. The plasma generating subsystem comprises voltage generating equipment and a nozzle. The voltage generating equipment comprises a mounting template, a cathode, an anode and a power supply. A main air inlet channel is formed in the mounting template; the cathode and anode are mounted in the main air inlet channel, and the anode is connected with the power supply; the nozzle comprises N stages of nozzle bodies, the first stage of nozzle body is connected with the main air inlet channel, the last stage of nozzle body is connected with the combustion chamber, and each stage of nozzle body is connected with a stage of secondary air inlet channel; and the water feeding subsystem comprises a water storage tank, a water injection pump, N+1 stages of water feeding channels, the first stage of water feeding channel is connected with the main air inlet channel, and the rest N stages of water feeding channels are connected with the N stages of nozzle bodies correspondingly. The purposes of rapid ignition and combustion-supporting of difficult-flammable fuel can be achieved, and the novel water-adding plasma combustion system has the advantages of simple structure, convenient operation and the like.

Description

technical field [0001] The invention belongs to the field of plasma combustion systems, and more specifically relates to a novel water-added plasma combustion system. Background technique [0002] Plasma-assisted combustion is one of the most effective ways to solve the existing energy crisis and environmental problems, because on the one hand, plasma can make the fuel burn stably under harsh conditions, especially for supersonic combustion fields such as aerospace, and for scram engines The development of plasma is of great significance. On the other hand, plasma combustion can change the characteristics of fuel, and can make difficult-to-combustible fuels (lean coal, solid waste and anthracite) burn stably. Therefore, it is also of great significance to power generation industries such as thermal power generation. [0003] High-temperature plasma can promote combustion, and the chemical promotion effect of free radicals is greater than the thermodynamic promotion effect of...

AI Technical Summary

Problems solved by technology

Generally, oxygen or hydrocarbons are used as the plasma working medium. The former contains a large amount of oxygen free radicals, which can greatly promote combustion, but too high oxygen concentration will accelerate the corrosion of the cathode, and the latter is prone to produce soot and affect the environment.

In the prior art, the following schemes are given for the plasma-assisted combustion device: Patent CN105605922A discloses an ultra-fast material heating system, which uses plasma as a high-temperature heat source to burn the material rapidly, and uses a high-speed camera to judge its combustion characteristics , but the device can only burn solid materials, not gas and liquid fuels, and the device can only use water vapor as the working medium and not liquid water, and the generation of water vapor requires additional energy consumption, and the system can High consumption; patent CN105674257A discloses a two-stage adjustable water vapor plasma swirl burner, which mainly uses a two-stage plasma generator as a tool, and can use plasma to excite water vapor to generate plasma to stabilize combustion and reduce nitrogen Oxide, etc., however, the burner can only use water vapor as the working medium, and the patent does not specifically describe the structure of the plasma itself, and in addition, the two-stage adjustable water vapor plasma swirl burner has a narrow application range , mainly used in thermal power plants

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