Pulverized coal burner for efficient ignition and combustion of asphalt mixing plants

Abstract

A pulverized coal burner capable of realizing efficient ignition and burning and applicable to an asphalt mixing plant comprises a support, a furnace body, a coal feeding pipe, an air guiding device and an ignition system, wherein the air guiding device comprises an air guiding chamber, a variable frequency fan and an air inlet channel; a refractory mortar cast layer is arranged on the side surface of the air inlet channel and is provided with a circular air inlet and a first furnace chamber air channel; the middle of the refractory mortar cast layer is connected with the coal feeding pipe; an ignitor air pipe is sleeved with the coal feeding pipe; a circular air channel is mounted between the ignitor air pipe and the tail end of the coal feeding pipe; the air guiding chamber is further provided with a branch air pipe communicating with the ignitor air pipe; the ignition system comprises an ignitor, an air storage tank and a fuel pipe; the ignitor is arranged at the tail end of the ignitor air pipe; an air cylinder connected with the ignitor is further arranged in the ignitor air pipe; diesel oil is contained in the air storage tank; an air inlet end of the air storage tank is connected with an air compressor; an air outlet end of the air storage tank is connected with the ignitor through the fuel pipe. With the burner, pulverized coal can be sufficiently dispersed, the ignitor can perform ignition easily, and the burning efficiency of the pulverized coal can be improved.

Description

technical field [0001] The invention relates to a pulverized coal burner, in particular to a pulverized coal burner used for high-efficiency ignition and combustion of an asphalt mixing plant. Background technique [0002] The burner is one of the most important key components in the asphalt mixing plant. The working performance of the burner directly determines the product quality, production capacity and processing cost of the asphalt mixing plant, and is also an important evaluation index for the performance of the asphalt mixing plant. [0003] Existing coal-fired burners in asphalt mixing plants need to adjust the size of the flame through the damper, and the failure rate of the damper is high. When the diesel is ignited, due to the high ignition point of coal powder, it is necessary to use the diesel pump to deliver the diesel to the ignition gun to ignite and burn in the furnace. Coal powder, but in the process of use, there will be problems such as high failure rate ...

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Problems solved by technology

[0004] The invention provides a pulverized coal burner for high-efficiency ignition and combustion of an asphalt mixing plant, and its main purpose is to overcome the high failure rate and service life of the existing pulverized coal burner in an asphalt mixing plant that requires fuel injection from a diesel pump when it is ignited. Problems such as short, carbon deposition in the ignition gun, and low combustion efficiency of pulverized coal

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