What is the Working Principle of a Diesel Fired Steam Boiler?

Diesel fired steam boilers are essential industrial boilers that burn diesel to produce steam for various industrial applications. As a clean energy solution, diesel is one of the most commonly used fuels in oil-fired steam boilers. ZOZEN Boiler, a leading manufacturer in the industrial boiler sector, offers a wide range of diesel fired steam boiler models that have received high praise from users. Today, we will explore the working principle and system structure of diesel fired steam boilers.

Q: How does a diesel fired steam boiler operate?
A: The operation of a diesel fired steam boiler begins with the burner igniting the diesel fuel, releasing heat. This heat is absorbed by the water walls through radiation, generating significant amounts of steam that enter the steam drum for steam-water separation (except in direct flow boilers). The separated saturated steam then flows into the superheater, where it absorbs additional heat through radiation and convection from the flue gases, ensuring the superheated steam reaches the required working temperature.

Q: What are the main types of diesel fired steam boilers?
A: Diesel fired steam boilers are mainly categorized into two series: the WNS series and the SZS series.

WNS Series Diesel Fired Steam Boiler

Q: What are the features of the WNS series?
A: The WNS series is a shell-type, three-pass wet-back oil-fired boiler. It operates automatically, with fuel atomized by the burner forming a flame that fills the entire corrugated furnace. The first pass involves radiation heat transfer through the furnace wall. High-temperature flue gases converge in the combustion chamber and enter the second pass, comprising the threaded smoke tube bundle area, where heat exchange occurs. The gases then move to the third pass before exiting through the chimney. This series is known for its safety, high efficiency, energy-saving features, and fully automated intelligent control.

Q: How is the SZS series designed?
A: The SZS series features a double-drum, vertical, D-type arrangement. The right side contains the furnace, while the left side has the convection tube bundle and superheater. The boiler is fixed to the base with movable supports, allowing for thermal expansion. The furnace is surrounded by membrane water walls, fully sealing the furnace from the convection tube area. The flue gases exit from the rear of the furnace into the combustion chamber and then through the convection bundle, finally passing through economizers and condensers before being discharged into the atmosphere.

Q: What are the key benefits of using diesel fired steam boilers?
A: Diesel fired steam boilers from ZOZEN Boiler offer numerous advantages:

1. High Efficiency: With a large furnace design, these boilers achieve thermal efficiency exceeding 98%.
2. Low Emissions: NOx emissions can be as low as 30 mg/Nm³, making them environmentally friendly.
3. Advanced Sealing Structure: Both front and rear smoke boxes are designed with ZOZEN’s proprietary sealing technology to prevent smoke leakage.
4. Automated Control: Equipped with imported feedwater pumps and burners, these boilers feature high automation levels for ease of operation.

Conclusion
ZOZEN Boiler is dedicated to providing high-quality diesel fired steam boilers tailored to meet the specific needs of users. With their advanced technology and exceptional performance, ZOZEN’s diesel fired steam boilers are the ideal choice for industries looking for reliable and efficient steam generation solutions. For more information or to consult on your diesel fired steam boiler needs, reach out to ZOZEN Boiler today!