Adjusting premixed type secondary fuel gas nozzle and method

Abstract

The invention relates to an adjusting premixed type secondary fuel gas nozzle and method. A plug (17) is arranged at the front end of a fuel gas pipe (22), the end, close to the plug (17), of the front end of the fuel gas pipe (22) is provided with a plurality of fuel gas outlets (18), the front end of an air inlet pipe (19) is connected with the tail end of a linking bent pipe (16) in a fastened mode, the front end of the linking bent pipe (16) is connected with the tail end of a mixing pipe (9) in a fastened mode, the front end of the mixing pipe (9) is provided with the fuel gas nozzle (11), the end, close to the tail end, of the mixing pipe (9) is provided with a linking disc a (14), the linking disc a (14) is provided with a fire observation hole (15), the end, close to a flange a (13) of an air pipe (5) is provided with a main air opening (6), the outer side of the air pipe (5) is sleeved with a furnace sliding way (2), and the furnace sliding way (2) is linked with a furnace wall (1) by an expansion bolt (3) through a linking steel plate (4) fixed at one end of the tail end.

Description

Technical field: [0001] The invention specifically relates to an adjustable premixed secondary gas burner and a method thereof, which belong to the technical field of kiln combustion and are suitable for the combustion application of refractory materials. Background technique: [0002] As far as the inventor knows, the combustion device used in the sintering process of refractory materials in China is diffusion combustion, and the commonly used diffusion combustion is that the gas-supporting gas and the gas are mixed while burning, and there are several disadvantages; It causes excess gas-supporting gas, increases the temperature of the exhaust gas, and increases the heat loss of the kiln. The second is that the gas cannot be fully burned due to poor mixing, resulting in excess fuel, thus wasting fuel. On the other hand, the combustion devices used in the sintering process of refractory materials are all installed at fixed positions. The burners on the commonly used combust...

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Problems solved by technology

[0002] As far as the inventor knows, the current domestic combustion device used in the sintering process of refractory materials is diffusion combustion, and the commonly used diffusion combustion has several disadvantages in the combustion while the auxiliary gas and gas are mixed; Cause excess combustion gas, increase the temperature of the exhaust gas and increase the heat loss of the kiln

Second, due to poor mixing, the gas cannot be fully combusted, resulting in excess fuel, thus wasting fuel

The working method of the burner on the existing design combustion device is to sinter by the external flame under the condition of heat radiation, and at the same time, the highest temperature part is not on the sintered object on the kiln wall, and part of the heat energy is transferred by the inner kiln wall and the sintered object through radiation. It is not directly sintered by flame, so in the actual operation, the fire outlet of the kiln wall is particularly deformed due to sintering. In addition, the temperature inside the kiln wall is higher than the temperature of the sintered object, which is a waste of fuel

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