How to Configure an 8 Ton Steam Boiler for Rice Husk and Coal?

1. Defining the 8 Ton Steam Boiler for Solid Fuel
An 8 ton steam boiler designed to burn rice husks or coal is typically a chain grate or reciprocating grate boiler. The request for 23 bar (2.3 MPa) pressure classifies this as a high-pressure industrial boiler. This 8 ton steam boiler must be robust enough to handle the abrasive nature of coal and the high volatile content of rice husks.

2. Why High Pressure and Fuel Flexibility are Challenging
Operating an 8 ton steam boiler at 23 bar requires high-grade steel and precise welding technology. Furthermore, rice husks and coal have different combustion characteristics. Rice husks burn quickly and can cause ash fouling, while coal requires a longer residence time on the grate. The boiler design must accommodate both to maintain stable output.

3. Selection Guide: SZL vs. DZL

SZL Series: A water-tube assembly boiler. The membrane water wall structure is ideal for high pressure (23 bar) and provides a larger combustion chamber for biomass like husks.
DZL Series: A fire-tube/water-tube hybrid. More compact, suitable if space is limited, but the SZL is generally recommended for high-pressure biomass applications.
4. ZOZEN Product Advantages
ZOZEN’s SZL series 8 ton steam boiler features a customized arch design and air distribution system. We adjust the grate speed and air volume to suit both coal and rice husks. The membrane water wall construction ensures the boiler withstands 23 bar pressure reliably while preventing air leakage. The design minimizes ash accumulation, a common issue with biomass fuels.

5. Manufacturer Strength
ZOZEN utilizes advanced manufacturing equipment, including membrane wall production lines and robotic welding, to ensure the quality of every 8 ton steam boiler. We hold the ASME "S" stamp, certifying our capability to manufacture high-pressure power boilers. Our technical team can provide a detailed invoice and technical specifications tailored to the client's dual-fuel requirements.