Coal-oil-gas three-purpose burner

Abstract

The invention discloses a coal-oil-gas three-purpose burner which comprises a shared hearth connected with a fuel injection device through a powder mixing barrel. The fuel injection device is connected with the pulverized coal supply device, the fuel oil supply device and the fuel gas supply device. The fuel injection device comprises an outer barrel, a powder injection barrel and a fuel oil spray gun which are sequentially arranged from outside to inside. A pulverized coal inlet is formed in the powder spraying cylinder, and a fuel oil inlet is formed in the fuel oil spraying gun; an annular fuel gas shunting cavity is arranged along the periphery of the outer barrel body, and a fuel gas inlet and a fuel gas nozzle are formed in the annular fuel gas shunting cavity; an air inlet is also formed in the outer cylinder body and is connected with an air supply device; and an ignition device is arranged in the powder mixing cylinder. The pulverized coal burner, the fuel oil burner and the natural gas burner are integrated into a whole, solid fuel, liquid fuel and gas fuel can be singly burnt or co-burnt and can be combined at will, the purchase and maintenance cost is saved, installation, use and maintenance are very convenient, and the use cost is reduced.

Description

[0001] This application is a divisional application of the invention patent of the parent application titled "a kerosene gas three-purpose burner"; the application number of the parent application is: CN201810055561.X; the application date of the parent application is: 2018-01-19 . technical field [0002] The invention relates to the technical field of asphalt mixing burners, in particular to a kerosene-gas three-purpose burner. Background technique [0003] Industrial burners can be divided into pulverized coal burners, oil burners, and natural gas burners according to the type of fuel. Burners have long been used in thermal power plants, boilers, and metallurgical industries. In addition, they have been used in municipal It is also widely used in asphalt mixing equipment in the field of construction and road construction. Although there are various pulverized coal burners, oil burners and gas burners on the market, including "a kind of pulverized coal burner" disclosed i...

AI Technical Summary

Problems solved by technology

Although there are various pulverized coal burners, oil burners and gas burners on the market, including "a kind of pulverized coal burner" disclosed in Chinese patent CN201672511, all existing burners cannot The defect that various fuels are used and cannot be replaced with each other, when the fuel is replaced, the burner system equipment must be replaced, which not only affects the normal operation, but also increases the equipment purchase cost and maintenance cost, and increases the Manual labor intensity brings great inconvenience to users and increases a great economic burden

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