Coal-oil-gas triple-purpose combustor

Abstract

The invention discloses a coal-oil-gas triple-purpose combustor comprising a shared hearth which is connected with a fuel injection device through a powder mixing cylinder. The fuel injection device is connected with a coal powder supply device, a fuel oil supply device and a fuel gas supply device. The fuel injection device comprises an outer cylinder body, a powder injecting cylinder and a fueloil spray gun, wherein the outer cylinder body, the powder injecting cylinder and the fuel oil spray gun are sequentially arranged from outside to inside. A coal powder inlet is formed in the powder injection cylinder, and a fuel oil inlet is formed in the fuel oil spray gun. An annular fuel gas flow distribution cavity is arranged along the periphery of the outer cylinder body and provided with afuel gas inlet and fuel gas spray nozzles. An air inlet is further formed in the outer cylinder body and connected with an air supply device. An ignition device is arranged in the powder mixing cylinder. The coal-oil-gas triple-purpose combustor overcomes the defects that a combustor cannot adopt multiple kinds of fuels and the fuels cannot replace one another. The coal-oil-gas triple-purpose combustor integrates a pulverized coal combustor, a fuel oil combustor and a natural gas combustor, achieves arbitrary combination, saves the purchase and maintenance cost and is quite convenient to install, use and maintain.

Description

technical field [0001] The invention relates to an asphalt mixing burner, in particular to a kerosene and gas three-purpose burner. Background technique [0002] 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 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 ...

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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