DZL Series Hot Water Boiler

DZL Series Hot Water Boiler

The DZL series fast-loading boiler is a horizontal three-pass water-fire tube chain grate boiler, which uses medium-quality bituminous coal,Combustion equipment adopts light-duty chain grate.

  • Rated thermal power : 1.4 - 14 MW
  • Rated thermal efficiency : ≥82%
  • Rated pressure: 0.7 - 1.25 Mpa
  • introduction
  • Technical parameters
  • Goods Delivery
Related Cases

The DZL series quick-loading boiler is a horizontal three-pass water-fire tube boiler with movable chain grate. The boiler body is arranged longitudinally with a single drum, and threaded pyrotechnic tubes are arranged in the drum to form a convective heating surface. The drum and water-cooled walls on both sides form a furnace radiation heating surface. The combustion equipment uses a light-duty chain grate, and the electrical control system allows for stepless speed regulation of the grate and includes limit parameter alarms and interlock protection.


  • Wide fuel adaptability: The boiler is applicable to various coal types, such as bituminous coal, lean coal, anthracite, rice husk, wood chips, corncobs, and so on.

  • Thermal efficiency ≥ 82%: Threaded smoke tubes enhance heat transfer and improve boiler thermal efficiency.

  • Easy operation: Advanced control system for fuel supply, ash and slag discharge, and high degree of operation automation.

  • Easy on-site installation: Compact structure, convenient on-site installation, short cycle, and low capital investment.

  • Spring full lift safety valve: The safety valve discharge is strictly calculated. When the system pressure exceeds the specified value, the safety valve automatically opens to release the pressure to ensure safe boiler operation.

  • Threaded pipes: Prolong the residence time of high-temperature flue gas and enhance heat transfer. The heat transfer coefficient is 1.8 times higher than that of ordinary smoke pipes.

  • Arched tube sheets: Complete improvement of the high-stress state above the flat tubesheet inlet. The degree of fatigue resistance is much higher than that of a flat tube sheet.

  • Panels: Cold-rolled die forming with good rigidity and light weight, the concave-convex panel is derusted and coated with primer and topcoat for good anti-corrosion effect.

  • Unique three-pass design of water and fire pipe: The high-temperature flue gas first enters the eight-character flue on both sides of the body from the tail. The cooled flue gas enters the threaded smoke pipe in the drum from the front smoke box, fundamentally solving the tube plate cracking problem of pure fire tube boilers.

  • Manholes and inspection doors: The boiler features manholes on the upper and lower drums, which are easy to open and facilitate maintenance and cleaning. The furnace is equipped with an inspection door, which is convenient for inspection and maintenance.

Contact us to visit the factory or order products

Technical parameters of DZL series hot water boiler(coal/biomass)

Model Rated thermal power(MW) Pressure(MPa) Rated water temperature(℃) Return water temperature(℃) Max transportation dimension(m) (LxWxH)
DZL1.4-0.7/95-70-AII 1.4 0.7 95 70 5.7×2.5×3.5
DZL2.8-0.7/95/70-AII 2.8 0.7 95 70 6.3×2.6×3.6
DZL4.2-1.0/115/70-AII 4.2 1 115 70 7.3×3.2×3.6
DZL7-1.0/115/70-AII 7 1 115 70 7.2×3.3×3.6
DZL10.5-1.0/115/70-AII 10.5 1 115 70 8.8×3.7×3.7
DZL14-1.0/115/70-AII 14 1 115 70 9.7×3.4×3.7

Note: Our products are being updated constantly, all rights reserved by EVERED.

Enterprise strength and service support

Integrating R&D, production, distribution, and service-providing into one enterprise, EVERED attaches great importance to communication with customers. We have established an after sales visit team consisting of more than 56 persons. On the one hand, they timely solve the problems that our customers encounter; on the other hand, they collect feedback and improvement recommendations from our customers, to correctly orient our development and research.

EVERED Several production bases for production Several production bases for production
EVERED Free budget analysis, program planning Free budget analysis, program planning
EVERED Service that exceeds expectations Service that exceeds expectations