The outstanding advantages of the coal powder burner lie in significantly reducing fuel costs for mixing equipment users, all while maintaining stability and operational efficiency. It consists of a coal powder main burner with wind film cooling, either in the form of a round tube or a square tube, and an internal ignition burner. The ignition burner features a porous medium small oil jet and a primary coal powder combustion chamber, equipped with coal powder gas flow. The porous medium small oil jet includes a nozzle, pulse igniter, air, mixing distributor, porous medium, oil coil, and an outer shell made of fire-resistant material. An oil flow control valve is installed between the oil coil and nozzle, and an air flow control valve is positioned before the air. The oil pump is connected to the oil filter and oil coil. The porous medium small oil jet combustion is stable, with high flame temperature, a compact structure, and heat storage capabilities. It can maintain an oil flame without extinguishing, achieving the goal of igniting coal powder. It effectively ignites, stabilizes, and assists in the combustion of various coal powder boilers, offering impressive fuel-saving rates and substantial savings on fuel costs.

Do you know the main characteristics of coal powder burners? Below, we will provide a detailed explanation:

The coal powder burner features various adjustment methods, allowing for extensive and stepless adjustment of the ratio of internal and external air, as well as the outlet jet flow pattern, all under the condition of constant total airflow. This enables the flame shape to adapt to any operating condition.

The new type of coal powder burner shortens the time to reach operating temperature, offering heat efficiently with low coal quality requirements and a wide applicability to various coal types, resulting in high economic benefits.

The coal powder burner can reduce coal consumption. Theoretical and practical evidence shows that a 1% reduction in primary air volume can decrease heat consumption by 8.70 to 10.46 kJ/kg of fuel, while also significantly increasing the secondary air temperature.

The internal temperature field of the coal powder burner is uniform, with a large heated surface area for the heated objects inside the furnace chamber. The slag does not adhere to the surface of the workpieces, resulting in high-quality products.

Coal powder remains in the high-temperature zone of the coal powder burner for a long time, thus ensuring combustion and direct exhaust through the flue gas without black smoke, appearing as steam-like white smoke.

Six: The coal powder burner is easy to ignite, heats up quickly, and significantly improves work speed.

The burner's air supply and coal input can be adjusted as needed, and the furnace temperature and flame length can be regulated over a wide range to meet actual requirements.

Eight: Properly structured and excellent overall performance: The four-channel coal powder burner boasts an aesthetically pleasing design, complete with配套设施, low system resistance, easy flame adjustment, convenient maintenance, and overall performance that meets the standards of multi-channel burners.

The suspension device of the coal powder burner can extend and deflect according to the operational conditions inside the kiln, adjusting its working position within the kiln to stabilize the thermal process.

The internal and external casings of the swirl wind channel are both equipped with an axial expansion structure, allowing for real-time adjustment based on operating conditions to achieve an expansion and extension effect at the nozzle.

Eleven: The smoke emitted from the coal powder burner has a darkness level of Lingman 0-1 grade.

The ash content of the coal powder burner is approximately 0.1%, with virtually no carbon dust.

Thirteen: The new coal powder burner achieves a 15-30% energy-saving rate.

Fourteen: In the absence of any dust removal equipment in the flue, the smoke content within the burner can be adjusted by using the lower flue, as long as the coal and air combustion is sufficient, the standard can be met.

New Material Lifespan: The vulnerable parts of the four-channel pulverized coal burner have been treated with a special coating technology, which increases the lifespan of the critical areas of the burner by 5 to 10 times compared to ordinary steel.

Once the structure of the coal powder burner is determined, its operation and adjustment in the fan mill straight blowing system mainly rely on the waist air. Therefore, the actual operation of the boiler emphasized the impact of the waist air on the burner's operating characteristics, while also testing the boiler's ignition startup, low-load combustion stability, and NOx emission performance after adopting a dual-channel dense and dilute coal powder burner. The semi-open waist air has a value point at the burner nozzle, indicating that from this point, the ambient atmosphere changes from oxidizing to reducing, reducing some of the already formed NOx. In the fully open state, the coal powder continuously ignites and burns under an excess oxygen condition, and the NOx concentration continues to increase.

Under the waist wind opening, as the waist wind transitions from closed to open, the root temperature below the burner decreases from 570°C to 210°C, resulting in a deterioration of the ignition conditions. Under various operating conditions, the temperature gradually increases along the burner's axis, reaching up to 700°C at the nozzle when the waist wind is fully closed. This allows for stable combustion and ignition within the combustion chamber for most coal types. However, with the waist wind fully open, the temperature is only around 350°C, a difference of 350°C. Along the burner's axial distance, when the waist wind is half-open or fully open, the O2 levels decrease, and CO2 content increases. The temperature distribution of the dual-channel dense and lean coal powder burner, due to its dense and lean combustion and stable combustion chamber, and by adjusting (narrowing/off) the waist wind coal powder airflow ignition conditions, the coal powder is easily ignited upon introduction. This timely and stable ignition of the coal powder improves the burnout rate, increases heat release into the furnace, thereby accelerating the boiler's startup and heating speed, shortening the startup time, and saving startup oil.