Rotary kiln burner: low nitrogen emission, energy-saving, intelligent and environmentally friendly

1、 Classification of low nitrogen rotary kiln burners:

The new rotary kiln burner developed by Zhengzhou Zhongwei Environmental Protection Company has a wide range of fuel applications, including natural gas rotary kiln burners, coke oven gas rotary kiln burners, blast furnace gas rotary kiln burners, converter gas rotary kiln burners, blast furnace gas rotary kiln burners, diesel rotary kiln burners, heavy oil rotary kiln burners, etc. The equipment is easy to maintain and has low energy consumption, Environmental protection and other advantages have been regarded as ideal replacement products in the rotary kiln equipment industry. The detailed content will be introduced in a special topic, and you are welcome to pay attention in a timely manner.

2、 Characteristics of rotary kiln burner:

1. The low nitrogen burner of the rotary kiln mainly consists of pipelines, nozzles, metal ripple compensators, butterfly valves, pressure measuring instruments, and protective layers.

Pipeline: From the outside to the inside, there are axial flow air channels, coal air channels, swirling air channels, central air channels, and fuel pipes. Because the fuel pipe is only used for ignition, it is commonly referred to as a four channel fuel pipe.

Nozzles: Made of special materials, the cross-sectional area of the outlet of the swirling air can be adjusted to adjust the spraying speed and air volume of the swirling air. The entire set of nozzles is a key component to ensure the shape of the flame.

Swirl wind ripple compensator: It is the main component that connects the internal and external pipelines of the swirl wind, seals and adjusts the flame shape.

Butterfly valve: used to regulate air volume.

Pressure measuring instrument: indirectly displays the spray speed of the air outlet inside the burner.

Protective layer: refers to the fire-resistant casting layer, which is self poured on site.

2. Working principle: Pulverized coal is carried by the airflow and sprayed outward from the coal duct at a certain diffusion angle. The combustion air from the outer neighbor transmits a considerable amount of momentum and moment of momentum. The swirling air on the inner side mixes with the sprayed pulverized coal airflow and spirals forward at high speed, meeting the high-speed axial flow airflow beam. The insertion of axial flow air beams further enhances the mixing of coal and air (including the surrounding secondary air), and can adjust the degree of flame divergence. It can adjust the length and thickness of the flame as needed to achieve the desired flame shape. The function of the central wind is to promote the combustion of a small amount of coal powder and CO in the central part to be more sufficient, and to play a stabilizing role in the flow. Due to this combustion mechanism and the high speed of swirling and axial air, combustion is very rapid and complete.

3. Burner performance characteristics:

(1) The structural design is reasonable and the flame adjustment is convenient. In addition to adjusting the air volume of axial flow and swirl air, the outlet cross-sectional area of swirl air can also be adjusted to achieve the purpose of changing the outlet wind speed of the burner and ensuring the normal combustion of fuel.

(2) Each air duct of the burner is connected with a flange, making it easy to disassemble and maintain.

(3) The nozzle material is unique, heat-resistant, and easy to replace.

(4) Reducing the content of CO and NOX: Due to the more thorough mixing of combustion air and coal powder, combustion is faster and more complete, reducing the content of CO and NOX in the kiln exhaust gas, which is conducive to the smooth operation and environmental protection of electric dust collection.

The rotary kiln burner system designed by Zhengzhou Zhongwei Environmental Protection Equipment Co., Ltd. has achieved automatic control of the entire machine. Operators can monitor various processes such as feeding, calcination, and product transportation through PLC or DCS control systems in the central control room. To ensure smooth and orderly production, please feel free to call (WeChat synchronization) at 15713691937 for more details.

Zhongwei Environmental Protection Group Co., Ltd. (Zhengzhou Zhongwei Environmental Protection Equipment Co., Ltd. and Zhengzhou Deste Automation Equipment Co., Ltd.) undertakes the "general contracting" project of large-scale gas and oil fired kilns, automation control systems, desulfurization and denitrification equipment, kiln refractory material masonry, and online monitoring devices both domestically and internationally. It is a "one-stop" environmental protection kiln solution provider and implementer.

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