DZL New Water-fire Pipe Hot Water Boilers

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  DZL New type water tube boiler is co-produced by Wuxi Zozen Boilers Co,Ltd and Beijing Zhiguang Boiler Research Institute based on full aspects of technical cooperation. The technology of new type water tube boiler of Beijing Zhiguang Boiler Research Institute is adopted and Professor Li Zhiguang is invited to hold technology Supervision.

  DZL New type water tube boiler integrates all advantages of water and fireboiler in home and abroad. As the industrial boilers in China covers wide fields of big quantity with a behindhand technology,thus,this new type is a new generation product and a scientific fruit of domestic colleges and research institutes.It features in high technology content,which is lo items of new technology increased comparing with current industrial boiler,therefore,it intensify the burning and heat conducting Water cycling is safe and reliable with enough output force and high efficiency.The output force and efficiency will not change in the whole operation life time.New type indicates that there is no reported boiler type in home and abroad.It has good environment protection and energy conservation effect;It has great economic and social benefits.

  • Parameter
  • Characteristics
  • System flow chart
  • Related Case
DZL14-1.0/115/70-A DZL21-1.0/115/70-A DZL29-1.0/115/70-A DZL46-1.25/130/70-A DZL58-1.25/130/70-A DZL70-1.6/150/90-A
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
Ⅱ类烟煤 Ⅱ类烟煤 Ⅱ类烟煤 Ⅱ类烟煤 Ⅱ类烟煤 Ⅱ类烟煤
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


The boiler heats up quickly
Quick temperature rising of boiler: since the total weight of boiler steel material, heat resistance and insulating material are less than that of other boilers, and large quantity of high efficiency heat conductive screw thread duct is equipped in shell, and almost half of shell surface is heated, thus, the time required by temperature rising is largely shortened, which is 1/3 less comparing with water boiler. The boiler heats up quickly




DZL New Water-fire Pipe Hot Water Boilers-System flow chart

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