Oxygen increasing energy-saving spray gun for industrial furnace

Abstract

The invention provides an oxygen increasing energy-saving spray gun for an industrial furnace. The top of a fuel channel connection pipe penetrates a rotary air plate to be connected with a nozzle head of the spray gun, the tail of the fuel channel connection pipe penetrates a baffle at the rear end of the spray gun to be connected with a fuel opening connector, and the fuel opening connector is provided with a fuel inlet. An outer shell of the spray gun is coaxially arranged on the outer side of the fuel channel connection pipe, and the outer shell of the spray gun is provided with an air combustion supporting air inlet. An oxygen increasing channel outer sleeve is coaxially arranged between the outer shell of the spray gun and the fuel channel connection pipe, the top end of the oxygen increasing channel outer sleeve is connected with the rotary air plate, and the tail end of the oxygen increasing channel outer sleeve and the tail end of the outer shell of the spray gun are connectedwith the baffle at the rear end of the spray gun through oxygen increasing inlet flanges. By means of the oxygen increasing energy-saving spray gun for the industrial furnace, fuel can be greatly saved, the amount of air for reaching the original same combustion temperature is reduced, the amount of combustion-supporting air for combustion is reduced, the coefficient of excess air is reduced, andthe smoke exhausting amount and the SO2 and NOx exhausting amount are reduced; and the energy saving and environment protecting effects are improved, the running cost is reduced, and the service lifeis prolonged.

Description

technical field [0001] The invention relates to a spray gun, in particular to an oxygen-increasing and energy-saving spray gun for industrial furnaces. Background technique [0002] Under the current situation of energy crisis and higher and higher requirements for environmental protection, the subject of energy saving, consumption reduction, energy saving and emission reduction has become very important for enterprises producing with industrial kilns, which directly affects the survival of enterprises. . [0003] At present, spray guns used in industrial kilns (roller kilns, tunnel kilns, shuttle kilns, etc.) figure 1 As shown, it is composed of a fuel port joint 1, a spray gun rear end baffle 2, a spray gun outer shell 3, a fuel channel connection 4, a rotating wind plate 5, and a spray gun burner head 6. The rotating air plate 5 and the rear end baffle plate 2 of the spray gun are respectively installed on the front end and the rear end of the fuel passage connecting pi...

AI Technical Summary

Problems solved by technology

[0007] The above-mentioned existing spray guns are all air-assisted combustion spray guns. When the same combustion temperature is reached, when fuels such as natural gas, water gas, and liquefied petroleum gas are used for combustion under the air-assisted combustion state, the air-fuel ratio calculated according to its heat energy and the excess air in actual application The value of the coefficient is obtained, the air consumption is large, resulting in waste of fuel consumption and large exhaust emissions, SO 2 , NOx and other harmful substances are discharged, which affects the environment and increases the environmental protection pressure of enterprises

[0008] Some enterprises use pure oxygen instead of air to support combustion or mix oxygen-enriched gas in the combustion air to achieve emission reduction effects. There are many disadvantages in this method, which makes it impossible for enterprises to accept and use it.

The reason is that the cost of this method is high, and the overall oxygen increase will cause oxidation and corrosion on the inner wall of the kiln, which will shorten the service life of the kiln. The use of pure oxygen technology must also be fully modified for the reasonable use of the kiln. This is a big problem. Some companies can't afford it

At the same time, in terms of environmental protection, after the pure oxygen combustion method is adopted, if the pure oxygen gas is not fully involved in the combustion, overoxygen will occur, which will instead reduce the thermal efficiency of the kiln and cause NOx emissions to rise instead of falling. This is currently the case. The major flaws in the application status of pure oxygen or oxygen-enriched combustion-supporting technology directly affect the energy-saving effect, and it is difficult to achieve the real effect of emission reduction and environmental protection

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