DZL Biomass fired hot water boiler

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  DZL series of quick fitting boiler is the horizontal tri-returning water and fire pipes chain grating boiler which uses granulated fuel.The boiler body is single drum type,portrait arranged;there are left and right 2 rows of fire pipe bundles inside boiler drum to form convection heat receiving surfaces.the boiler drum and water-cooled walls at both sides shape the combustion equipment uses light chain grating; exit shop in whole machine quick fitting type.The electric control realizes gratingstep free timing,the extreme parameter alarm and inter-lock protection.

  Features of this series of 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.It is the well appreciated equipment for extensive steam supplying equipment form medium and small enterprises and public heating.

  • Parameter
  • Characteristics
  • System flow chart
  • Related Case
DZL14-1.0/115/70-M DZL21-1.0/115/70-M DZL29-1.0/115/70-M DZL46-1.25/130/70-M DZL58-1.25/130/70-M DZL70-1.6/150/90-M
Rated thermal power
14 21 29 46 58 70
Rated working pressure
1.0 1.0 1.0 1.25 1.25 1.6
Rated output water temperature
115 115 115 130 130 150
Rated imported water temperature
70 70 70 70 70 90
Heating area
Boiler Proper
473.9 878 1006.6 1396 2103 2713
Effective area of great
21 27 36 58 77 89
Available Fuel
Designed coal
Low heating value
17700 17700 17700 17700 17700 17700


Full and constant output
The boiler adopts high-efficiency heat-transfer threaded smoke pipes, ensures the thread depth strictly. The smoke speed is selected reasonably. When the boiler performs normally in the long-term, there is no ash deposition in the threaded smoke pipes. Therefore, the boiler output and thermal efficiency do not decrease with the long-time operation time.Full and constant output


Small size and low investment
Because using high-efficiency heat-transfer threaded pipes to remove the heat-receiving surface of the tail, the length of boiler is significantly reduced compared to other types of boilers at the same tonnage, and the boiler height is significantly lower, the overall dimensions is minimum, which reduce 30% investment.Small size and low investment


No need to special power-off protection
Due to adopts mixed circulation and large water capacity, when a sudden power failure occurs, there is no need to take special protective measures to prevent the heating surface and the medium of boiler from being damaged which result from vaporization.No need to special power-off protection


Guarantee safety and reliability
By adopting the structure of the unstretched convex tube plate and the threaded smoke pipe, the thermal stress in the smoke pipe area of the pipe plate is significantly reduced; the water injection and ejection technology of the lower header box makes it impossible for the water wall and the high temperature tube plate to burst and crack.Guarantee safety and reliability





DZL Biomass fired hot water boiler-System flow chart

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