DZL Series Biomass Fired Steam Boiler


Product thermal capacity: 2 – 20t/h


Working pressure: 1.0-2.5 MPA


Available fuel: Biomass particles


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


DZL Series Biomass Boiler Introduction

DZL series quick-load boiler is a horizontal three-return water and fire pipe chain grate boiler. The boiler body is arranged in a longitudinal direction of a single drum, and a threaded pyrotechnic tube is arranged in the drum to form a convection heating surface, and the drum and the water wall on both sides constitute a furnace heating surface. The burning equipment adopts a light chain grate; the overall quick release form is delivered. Electrical control realizes stepless speed regulation of the grate, limit parameter alarm and interlock protection.

Features of this series of biomass boiler: compact structure, small volume; convenient installation, cheap in fundamental construction; mechanized fuel feeding and cinder removing; the output of the boiler is in sufficient and high efficiency. DZL series biomass boiler is the well appreciated equipment for extensive steam supplying equipment for medium and small enterprises and public heating.


DZL Series Boiler Manufacturing Process Features 


Boiler Manufacturing Process

  1. Key processing technology like material preparation and circling of steel plate, drilling of drum and tube plate etc, are all adopted advanced CNC machining process to decrease the assemble stress and extend the boiler working life.
  2. Steel tube cutting, threaded pipe pressing and convection tube processing are all adopted advanced CNC process.
  3. Firstly adopt arch tube plate and threaded fire tube structure at home to increase heat conduction to solve the problem of rear tube plate cracked.
  4. The chain grate panel, front and rear smoke chamber panel adopts CNC plasma cutting machine to cut orderly and beautifully.


Boiler Welding Process

  1. The biomass steam boiler vertical and circular seam adopts advanced unionmelt welding process to ensure the welding quality. All the vertical and circular seams will be done 100% rediographic inspection.
  2. The weld of smoke tube and tube plate will be pre-expanded first to remove the gap between tube and tube plate. And then adopt argon arc automatic welding process. This may relief stress efficiently and extend the DZL series biomass boiler working life.
  3. Tube flange weld adopts robot welding.
  4. Chain grate are all manufactured by ZOZEN and be test running for 72 hours before leaving the factory to make sure that the degree of tightness is moderate.


DZL Series Biomass Boiler Specification Parameters

Model Rated thermal power(t/h/MW) Rated working pressure(MPa) Steam temperature/Rated output water temperature(℃) Thermal efficiency(%) Maximum transport size(m)
DZL2-1.25-M 2/1.4 1.25 194 88% 5.7×2.5×3.5
DZL2-1.57-M 2/1.4 1.57 204 88% 5.7×2.5×3.5
DZL2-2.45-M 2/1.4 2.45 225 88% 5.7×2.5×3.5
DZL4-1.25-M 4/2.8 1.25 194 88% 6.6×2.6×3.6
DZL4-1.57-M 4/2.8 1.57 204 88% 6.6×2.6×3.6
DZL4-2.45-M 4/2.8 2.45 225 88% 6.6×2.6×3.6
DZL6-1.25-M 6/4.2 1.25 194 88% 7.3×3.2×3.6
DZL6-1.60-M 6/4.2 1.6 204 88% 7.3×3.2×3.6
DZL10-1.25-M 10/7 1.25 194 88% customized size
DZL10-1.60-M 10/7 1.6 205 88% customized size
DZL15-1.25-M 15/10.5 1.25 194 88% customized size
DZL15-1.60-M 15/10.5 1.6 205 88% customized size
DZL20-1.25-M 20/14 1.25 194 88% customized size
DZL20-1.60-M 20/14 1.6 205 88% customized size