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DZL series biomass-fired steam boiler

  • Thermal capacity

    2-10 t/h

  • Working pressure

    1-2.5 MPa

  • Outlet temperature

    170-225 ℃

  • Available fuel

    Biomass molding granules, wood chip, corn cob, saw dust, palm shells, rice husk, etc.

  • Available industries

    Heating, chemical, food, tobacco, textile, printing and dyeing, feed, medicine, building material, wine, rubber, hospital

DZL series biomass-fired steam boiler
The DZL series quick-installed boiler is a horizontal three-pass water-fire tube chain grate boiler designed for biomass combustion. The boiler features a single drum layout with threaded smoke tubes for convective heating surface, and water-cooled walls on both sides of the drum for radiant heating surface. The combustion equipment adopts a lightweight chain grate, and the boiler is delivered in a complete quick-installed form. The electrical control system enables infinitely variable control of the grate, with alarm and interlock protection for critical parameters.



  • Spring Full Lift Safety Valve
  • Strict calculation of the release amount
  • Automatic pressure release function
  • Threaded smoke tubes
  • Extended residence time of high-temperature flue gas
  • Heat transfer coefficient 1.8 times higher than ordinary smoke tubes
  • Arch tube panel
  • Improve the high-stress state above the flat tube panel manhole
  • Significantly higher fatigue resistance than flat tube panels
  • Panel
  • Cold-rolled pressing, rigid and lightweight structure
  • Excellent anti-corrosion performance
  • Ultra-Low Water Level Electrode
  • Add an ultra-low water level electrode protection
  • Interlocked with the drum and induced draft fan to ensure the water level safety
  • Unique water-fire tube three-pass design
  • High-temperature flue gas enters eight-shaped water tube passages (water tube)
  • Cooled flue gas enters fire tube passages inside the front smoke box (fire tube)
  • Solves cracked tube plate issue
  • Manhole Inspection Door
  • Easy to open
  • Easy maintenance and cleaning
  • Broad Fuel Compatibility

    Compatible with biomass pellets, rice husks, wood chips, corn cobs, sawdust etc.

  • Thermal Efficiency>83%

    Optimized Design: Efficient heat transfer with strategically placed components and threaded smoke tubes

  • Simple Operation

    Advanced controls automate fuel supply, ash removal, and slag discharge

  • Easy on-site installation

    Compact structure, quick installation, shorter cycle, less infrastructure investment

Model Rated thermal power (t/h) Rated working pressure (MPa) Rated steam temperature (℃) Thermal efficiency (%) Maximum transport dimension (m)
DZL2-1.25-SCⅢ 2 1.25 194 >83 5.30×2.40×3.40
DZL2-1.6-SCⅢ 2 1.6 204 >83 5.30×2.40×3.40
DZL2-2.5-SCⅢ 2 2.5 225 >83 5.30×2.40×3.40
DZL4-1.25-SCⅢ 4 1.25 194 >83 6.50×2.70×3.60
DZL4-1.6-SCⅢ 4 1.6 204 >83 6.50×2.70×3.60
DZL4-2.5-SCⅢ 4 2.5 225 >83 6.50×2.70×3.60

* The basic parameter table provided is a reference, but ZOZEN Boiler can tailor the boiler device and system to your specific needs. Note that specifications and descriptions may differ from the actual product, and ZOZEN reserves the right to modify them without notice. For additional specifications, please contact us.

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Wuxi ZOZEN Boilers Co., Ltd. has been committed to the research, development and production of industrial boilers since its foundation in 1988. ZOZEN has passed ISO9001:2015 and obtained PRC Grade A Manufacture License of Special Equipment (Boilers), ASME "S" (Power Boilers) and "U" (Pressure Vessels) stamps and many other international certificates of authorization.