Plasma non-oil ignition system for low volatile component coal

Abstract

The invention belongs to the thermal boiler field, and discloses a plasma oil-free ignition system for low volatile coal. The plasma oil-free ignition system comprises a plasma generator and a burner, and is characterized in that the burner comprises a reaction chamber, a water injector, a reaction cylinder, a wind coal chamber, a wind coal cylinder, a wind chamber and a wind cylinder, wherein the water injector is arranged in the reaction chamber, the reaction cylinder is communicated with the outlet of the reaction chamber, the wind coal cylinder is communicated with the outlet of the wind coal chamber, the wind cylinder is communicated with the outlet of the wind chamber, the wind coal chamber and the wind coal cylinder are sleeved on the periphery of the reaction cylinder, the wind coal cylinder extends out of the outer end of the reaction cylinder, the wind chamber and the wind cylinder are sleeved on the periphery of the wind coal cylinder, the wind cylinder extends out of the outer end of the wind coal cylinder, and the outlet of the plasma generator is communicated with the reaction chamber.

Description

technical field [0001] The invention belongs to the field of thermal boilers, and relates to boiler accessories, in particular to a plasma oil-free ignition system for low volatile coal. Background technique [0002] The traditional way to ignite a thermal boiler is to ignite with an oil gun. When the boiler is started, the fuel gun is first lit. After the oil burns in the furnace for a certain period of time, the furnace is heated to the ignition temperature of the pulverized coal. At this time, the pulverized coal is sprayed into the furnace for mixed combustion with kerosene. When the boiler reaches more than 50% load and the pulverized coal can burn stably, the oil is gradually cut off to complete the ignition and start-up process. Under normal circumstances, a 200MW newly-built unit needs to burn more than 5,000 tons of fuel oil during the trial operation stage before it is put into production, and more than 50 tons of ignition oil is required for each start-up of the ...

AI Technical Summary

Problems solved by technology

The current plasma oil-free ignition technology has been successfully applied to the operation of bituminous coal boilers, but it is not ideal for low-volatile anthracite and lean coal boilers. The main reason is that the volatile content of anthracite and lean coal is low, resulting in ignition failure.

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