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DHL series coal-fired steam boiler

DHL series coal-fired steam boiler

  • Thermal capacity

    20-75 t/h

  • Working pressure

    1.25-5.4 MPa

  • Outlet temperature

    184-485 ℃

  • Available fuel

    Bituminous coal, lean coal, anthracite etc.

  • Available industries

    Power generation, heating, chemical, food, rubber

DHL series coal-fired steam boiler
The corner tube boiler is a compact and efficient boiler that utilizes a pipe system as its skeleton. It features a fully enclosed membrane wall structure, flag tube design for the convective heating surface, and is widely used due to its compact structure and rapid temperature rise. It is a bulk-structured boiler.



  • Maintenance Platform
  • Grid-plate escalator for enhanced strength and rigidity
  • Strategic layout for easy access to every maintenance point
  • Novel Combustion Gear
  • Self-developed, forward-rotating, single-frame chain grate
  • Lower slag carbon, higher capacity boiler
  • Combustion and Cooling Chambers
  • Full-seal, water-cooled membrane walls
  • Front-back arch furnace, ignition and flame-leading arches, banner-style heating
  • Flag-Type Heating Surface
  • Variable cross-section, equal smoke speed design
  • Uniform smoke flow in high-low temperature zones
  • Broad Fuel Compatibility

    Compatible with bituminous, anthracite, and lignite etc.

  • High Combustion Efficiency

    Cross-beam chain grate and membrane water-cooled wall ensure thorough fuel combustion

  • High Degree of Intelligence

    Advanced control, automated fuel, ash, slag operations

  • Customizable Boiler System

    Tailored solutions for feed, slag, and gas treatment, saving time and money

Model Rated thermal power (t/h) Rated working pressure (MPa) Rated steam temperature (℃) Thermal efficiency (%)
DHL35-1.25-AⅡ 35 1.25 194 82
DHL50-1.25-AⅡ 50 1.25 194 82
DHL75-1.25-AⅡ 75 1.25 194 82
ZZ-35/3.82-AⅡ 35 3.82 450 82
ZZ-50/3.82-AⅡ 50 3.82 450 82
ZZ-65/3.82-AⅡ 65 3.82 450 82
ZZ-75/3.82-AⅡ 75 3.82 450 82
ZZ-75/5.3-AⅡ 75 5.3 485 82

* 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.