DHL Series Coal Fired Corner Tube Boiler

DHL series corner tube boiler adopts two patents from Xi’an Jiaotong University on fuel combustion effect and heating surface. Coal fuel is conveyed by chain grate into combustion chamber. Single drum and vertical structure in design, DHL series corner tube chain grate boiler often choose field assembly transportation. Unlike packaged boiler, this boiler annual operation time can be up to 8000 hours.

DHL Series Coal Fired Corner Tube Boiler
  • CAPACITY

    20-75 t/14-116 MW

  • Pressure

    ≤3.82MPa

  • Fuel

    Bituminous Coal, Anthracite Coal

  • Application

    Heating Supply, Industrial Steam Supply

DHL chain grate boiler1.jpg

Two national patents

It adopts two patents from Xi’an Jiaotong University: Flying ash re-combustion equipment based on the high temperature separation; Combined uniform flow design technique of comer tubes boiler flag pattern surface.

80-83% boiler thermal efficiency

DHL series corner tube boiler is the second generation high capacity chain grate hot water boiler, its thermal efficiency can reach to 83%.

DHL chain grate boiler1.jpg
DHL chain grate boiler3.jpg

Lower breakdown rate

The crossgirder grate is adopted, so it has the features of less operation resistance, better grate cooling effects, lower breakdown rate, less fuel leak. And the grates are made by the first-lass professional manufacture.

No dust leak, environment-friendly

Adopting light furnace wall structure, insulation performance is good, no dust leak, environment-friendly. At the same time, the whole boiler adopts the secondary wind turbulent combustion design idea and the fly dust high temperature separation plus flying dust inner circulation fluidized re-combustion.

DHL chain grate boiler4.jpg
DHL series Biomass steam boiler
Model Rated Steam Capacity Rated Steam Pressure
(bar)
Rated Steam Temperature
(℃)
Rated Water Temperature
(℃)
Fuel Type
t/h BHP
DHL20-1.25-AII 20 1532 12.5 194 105 (Biomass fuel)
Bituminous coal
DHL20-1.6-AII 20 1532 16 204 105
DHL20-2.5-AII 20 1532 25 226 105
DHL35-1.25-AII 35 2681 12.5 194 105
DHL35-1.6-AII 35 2681 16 204 105
DHL35-2.5-AII 35 2681 25 226 105
DHL45-1.25-AII 45 3447 12.5 194 105
DHL45-1.6-AII 45 3447 16 204 105
DHL45-2.5-AII 45 3447 25 226 105
DHL75-1.25-AII 75 5745 12.5 194 105
DHL75-1.6-AII 75 5745 16 204 105
DHL75-2.5-AII 75 5745 25 226 105
DHL series Biomass hot water boiler
Model Rated Thermal Power Rated Hot Water Pressure
(bar)
Rated Hot Water 
Temperature
(℃)
Return Water 
Temperature
(℃)
Fuel Type
MW BHP
DHL14-1.25/130/70-AII 14 1428 12.5 130 70  

 

Biomass fuel 
 / Coal
DHL29-1.6/130/70-A 29 2958 16 130 70
DHL29-1.25/130/70-AII 29 2958 12.5 130 70
DHL46-1.6/130/70-A 46 4692 16 130 70
DHL46-1.6/150/90-AII 46 4692 16 150 90
DHL58-1.6/130/70-AII 58 5916 16 130 70
DHL58-1.6/150/90-AII 58 5916 16 150 90
DHL70-1.6/130/70-AII 70 7140 16 130 70
DHL70-1.6/150/90-AII 70 7140 16 150 90
DHL116-1.6/130/70-AII 116 11832 16 130 70

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