Combustion Characteristics of Multi-Duct Dense-Thin Swirl Pulverized Coal Burner
The combustion characteristics of the multi-duct dense-thin swirl pulverized coal burner are:
Separation of dense and thin: stable combustion effect, not easy to flame out, suitable for various types of coal
Compound swirl: strengthen combustion and achieve full burning
Wind-coated pulverized coal: anti-slagging, protecting the furnace bricks
Adjustable flame: The length and thickness of the flame can be adjusted as required to achieve the desired flame shape
This kind of burner is designed to achieve five major effects: high efficiency, stable combustion, low pollution, anti-slagging, and anti-high temperature corrosion. It can overcome common defects such as unstable combustion in the chamber, poor coal adaptability, serious slagging, high pollution, and vulnerability of the brick lining.
Advantages of Multi-Duct Dense-Thin Swirl Pulverized Coal Burner
First: Coal can replace oil, greatly saving fuel costs and reducing operating expenses.
Second: Due to the special structure and reasonable air duct layout in the chamber, pulverized coal burns stably and fully with no ash residue accumulation.
Third: Through the interaction between primary wind dense-thin swirl and direct wind regulation, combustion is highly efficient and stable, and adaptable to various coals from low volatile to high volatile.
Fourth: Convenient online adjustment — according to different coal quality and boiler furnace structural characteristics, flame length, diameter, strength, and weakness can be adjusted randomly with a large adjustment range.
Choose the right burner by balancing fuel cost, emissions, capacity, and maintenance for efficient, reliable heating.See
How to Choose a Burner for an Asphalt Plant
Main Features of New Multi-Duct Pulverized Coal Burner
Adopt the most advanced pulverized coal combustion technology, significantly reducing ablation and erosion to the combustion chamber’s inner wall by the flame. As a result, there is almost no slag on the inner wall of the combustion chamber. Occasionally, slag thickness in individual parts is only 1–2 mm, with no adverse effect on combustion or machine life.
Key Design Advantages
The inside of the combustion chamber adopts a special structure with reasonable air duct arrangement and scientifically appropriate air distribution proportions.
Pulverized coal flame continues to burn stably in the combustion chamber, with sufficient combustion and high thermal efficiency.
The damper can be adjusted steplessly and remotely. Flame length and thickness can be adjusted in real time from the control room according to actual working conditions to achieve the best heating effect.
The combustion chamber is made of heat-resistant steel — no fragile materials such as refractory bricks or refractory castables are used. Its service life is several times longer than conventional burners lined with refractory bricks and requires almost no maintenance during daily use.
System Composition
New type multiple duct coal burner consists of:
Coal burner,Coal powder storage system,Automatic Control System,Accessories
Five Core Advantages Compared with Similar Products
Slight Slag Formation and Easy Maintenance The burner adopts the most advanced “semi-open pulverized coal combustion” form. The pulverized coal flame is fully burned under the outer duct air package, which reduces ablation and scour of the inner wall of the combustion chamber by the flame. Slagging on the inner wall is only 1–2 mm thick.
Full Combustion with High Thermal Efficiency Special structure is adopted in the combustion chamber with reasonable air duct layout. The proportion of each air duct is calculated scientifically. Pulverized coal airflow forms a large reflux area in the combustion chamber, making ignition easy and combustion stable.
Flame Shape Adjustable and Excellent Heating Effect The damper is controlled by an intelligent valve controller and can be adjusted remotely according to combustion requirements, maintaining an appropriate wind-coal ratio for optimal combustion effect. At the same time, flame length and thickness can be controlled remotely to adapt to different drying cylinder combustion zones and improve heating efficiency.
High Reliability and Long Service Life The combustion chamber is made of imported heat-resistant steel, eliminating the use of any firebrick, refractory castable, or other vulnerable materials. The special internal air duct layout ensures slag formation on the inner wall is only 1–2 mm thick. The service life of the whole machine is several times longer than traditional burners with firebrick lining and requires almost no maintenance in daily use.
High Level of Automation Two control options are available:
Basic type: Damper and coal feeding are manually adjusted through the operation panel in the control room.
Automatic type: Adopts “PC+PLC” mode control. According to the set temperature, it can automatically adjust coal powder supply, air distribution, and other main parameters affecting combustion effect, accurately controlling the asphalt mixing station discharge temperature within the range required by construction specifications.
