Plasma gasification ignition device of coal-fired boiler

Abstract

The invention discloses a plasma gasification ignition device of a coal-fired boiler. The plasma gasification ignition device comprises a boiler body and an air duct, a feeding device is arranged at the upper end of the boiler body, a waste discharging hole is formed in the lower end of the boiler body, a coal slag collecting box is arranged at the lower end of the waste discharging hole, an air inlet is formed in one side of the upper end of the boiler body, a first plasma combustion device is arranged below the air inlet, a second plasma combustion device is arranged on one side of the middle of the boiler body, and air inlet hoses are arranged on the outer side of the first plasma combustion device and the outer side of the second plasma combustion device. The plasma gasification ignition device is provided with the air duct, the air duct communicates with an air inlet pipe through an electromagnetic valve, the electromagnetic valve is used for guiding the air into the air duct through the air inlet pipe, the flow speed of the air is adjusted under control of the electromagnetic valve, and the air duct is mainly used for accelerating flames output by a flaming pipe nozzle.

Description

technical field [0001] The invention relates to the technical field of plasma ignition devices for coal-fired boilers, in particular to a plasma gasification ignition device for coal-fired boilers. Background technique [0002] Plasma combustion technology refers to the combustion technology that uses direct current air plasma as the ignition source to realize the oil-free ignition without a drop of oil for the cold start of the boiler. Plasma has the characteristics of promoting combustion. The plasma combustion system mainly includes combustion system, air powder system, plasma generator, electrical system, plasma air system and plasma cooling water system. [0003] At present, most of the plasma ignition devices for coal-fired boilers commonly used in the market are similar, but some shortcomings have also been found in the actual use process. At the same time, when the ignition device burns the coal powder, the flame will not be concentrated. Therefore, we propose a pla...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a plasma gasification ignition device for a coal-fired boiler, to solve the above-mentioned background technology. Inadequacies, for example, when the quality of pulverized coal in the boiler is poor, the ignition device cannot fully burn the pulverized coal, and at the same time, the ignition device will also have the problem that the flame is not concentrated when burning the pulverized coal

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