Injector gas and air preheat gas burner for carbon anode/cathode roasting oven

Abstract

The invention discloses an injecting gas and air preheat gas burner for a carbon anode / cathode roasting oven, mainly comprising an oven seat, a gas inlet pipe fixed on the oven seat and a gas nozzle arranged inside the oven seat. The gas burner is characterized in that a regulating damper is arranged outside the oven seat; a pipe coil device is arranged inside the oven seat; one end of the pipe coil device is connected with an gas outlet of the gas inlet pipe, while the other end is connected with the gas nozzle; the regulating damper is a cavity and one side surface thereof protrudes outward to form an air inlet, the bottom of the cavity is opened with a hole through which the hollow cavity is communicated with a flame path in the oven seat. The gas burner not only can automatically regulate the amount of combustion air entering the flame path (furnace chamber) in the working state of the gas burner, automatically stop entrance of combustion air in a non working state, but also can greatly improve the combustion efficiency of gas.

Description

technical field [0001] The invention relates to a gas burner, in particular to a jet-suction gas and air preheating gas burner for a carbon anode / cathode roasting furnace. Background technique [0002] At present, in order to improve the combustion efficiency of anode roasters or cathode roasters in domestic carbon products factories, most of the anode roasters or cathode roasters have adopted automatic control combustion systems. In the applied self-controlled combustion system, all burners are controlled by computer or PLC, inject combustible gas to the fire channel (furnace cavity) of the roaster in a pulsating manner, and work according to the preset heating curve. To ensure that the injected combustible gas can be fully combusted, it is also necessary to add a certain amount of combustion-supporting air to the roaster. [0003] However, the current anode / cathode roaster still has the following two defects: on the one hand, most burners use a normally open damper to con...

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Problems solved by technology

[0003] However, the current anode / cathode roaster still has the following two defects: on the one hand, most burners use a normally open damper to control the amount of combustion-supporting air entering the fire channel (cavity) of the roaster. make adjustments

And because the temperature of the combustion-supporting gas is low, the entering combustion-supporting air will affect the rising trend of the temperature in the fire path (furnace cavity) without combustion-supporting, or even lower the temperature, thus causing the entire combustion system to consume more energy. combustible gas burns

[0004] On the other hand, whether the gas used for combustion is natural gas or coal gas, the temperature of the gas supplied by the gas source is at room temperature or lower than the ambient temperature. According to the field test, this kind of gas at normal temperature or lower than the ambient temperature will also have a relatively large impact on the temperature rise compared with the temperature in the furnace of 1150 °C after entering the fire channel (furnace cavity), and it will also cause the combustion system to burn. Consuming more combustible gas for combustion and heating up, resulting in unnecessary waste, which will lead to higher product costs

[0005] Therefore, the existing anode / cathode roasters cannot meet the requirements of high efficiency and energy saving, and the improvement of the existing anode / cathode roasters has become a top priority for technicians

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