Product introduction
Pulverized coal burner (also known as coal injection pipe) is suitable for the medium and small rotary kiln. The coal combustion system has the advantages of full combustion, lively and powerful flame, good stiffness, not hurting the kiln crust, excellent maintainability, low maintenance cost; The key parts are made of high temperature resistant ceramic element. The system has characteristics of stable and reliable working, low investment, etc.
Application:
Burning system of rotary kiln in power, chemical, metallurgy, construction industry and so on.
Working principle
Due to the jet wind produced the hot recirculation zone, the up and down wind velocity directly affects the shape and back flow of the recirculation zone. The size of the sudden expansion space is determined on the basis of the burning coal type. It is used to adjust the recirculation zone shape and back flow in order to meet the required heat of pulverized coal ignition.
Structure
Pulverized coal burner is main consist of pipes, nozzle, metal bellow compensator, butterfly valve, pressure measuring, protect layer and so on. The main structure characteristics as below:
1. Pipes
From outside to center is axial air channel, swirling air channel, coal air channel, center air channel and firing channel separately, the firing channel is for firing, so it's called four channel.
2. Nozzle
It's made of special material, the outlet cross section area of axial air, swirling air and coal air can be adjusted, to adjust the ejection speed of each channel. The whole set nozzle is key part of ensure flame shape.
3. Axial air (swirling air) metal bellow compensator
Axial air (swirling air) metal bellow compensator is key part to connect inner and outer channel of axial(swirling) air, sealing and adjust flame shape.
4. Butterfly valve
Adjustment air volume.
5. Pressure measuring
Display the ejection speed of air from burner.
6. Protect layer
The refractory castables, poured by user
OUR ADVANTAGE
1. Reasonable structure design, fire adjustment easily, not only adjustment air volume of axial air, swirling air, but also adjustment outlet section area of axial air ,swirling air and coal air, to reach the goal of change outlet air speed of burner, to ensure fuel burning normally;
2. Less use of primary air, and coal air mix with primary air, secondary air fully, make burning complete, to reduce coal consumption effective;
3. Nozzle is made of special material, heat resistance and replacing easily;
4. Fire cover forming bowleffect, there is not high swirl with fire at beginning, to avoid the peak value of temperature, make the fire temperature distribute uniform and reasonable;
5. Because the combustion air mix pulverized coal fully, the burning is fast and safety, CO and NOX content from kiln tail exit gas are reduced, in favor of equipment operation safety and realize environmentally friendly production;
6. Flange connection for each air pipe of burner, remove and maintenance easily;
7. Adaptable for coal quality, burning low quality coal.
| Type and Spec |
Coal Consumption(t/h) |
Fan |
installation |
Kiln Type |
Overall Size(mm) |
| LY-1 |
1.2 ~ 1.8 |
Centrifugal |
Horizontal/suspension |
Φ1.9 |
300x9000 |
| LY-1A |
1.3 ~ 2.3 |
Centrifugal |
Horizontal/suspension |
Φ2.2 |
300x9000 |
| LY-2A |
1.8 ~ 2.8 |
Centrifugal |
Horizontal/suspension |
Φ2.5 |
300x9000 |
| LY-2A |
2.2 ~ 3 |
Centrifugal |
suspension |
Φ2.8 |
300x9000 |
| LY-3 |
2.5 ~ 3.3 |
Centrifugal/Roots |
suspension |
Φ3 |
350x10000 |
| LY-3A |
3 ~ 3.8 |
Centrifugal/Roots |
suspension |
Φ3.2 |
350x12000 |
| LY-4 |
4 ~ 4.8 |
Centrifugal/Roots |
suspension |
Φ3.5 |
406x12000 |
| LY-4A |
5 ~ 6.5 |
Centrifugal/Roots |
suspension |
Φ4 |
400x12000 |
Audited Supplier 
){kind=link}
){kind=link}