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SZL Double Drum Water Tube Hot Water Boiler

SZL Double Drum Water Tube Hot Water Boiler

SZL coal fired chain grate hot water boiler is horizontal type water tube boiler, the combustion equipment is chain grate. The boiler adopts fast assembly or packaged assembly structure, boiler with steam capacity lower than 4t/h is fast assembly water tube structure, boiler with steam capacity between 6~25t/h is consisted of upper part (boiler heated part) and lower part (combustion equipment). The wood fired hot water boiler has the advantages of compact structure, high steam quality, sufficient output, operate convenient and environmental protection.

1.4MW ~ 17MW

Rated Thermal Power

< 1.6 Mpa

Working Pressure

> 82%

Thermal Efficiency

Coal, Biomass

Avaliable Fuel


To Provide customers with safe, reliable and high-quality industry and product solutions and related services.

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Membrane Water Wall ●

Membrane Water Wall

Automatic Fuel Hopper ●

Automatic Fuel Hopper

High Temperature Resistance Chain Grate ●

High Temperature Resistance Chain Grate

Large Diameter Double Drums ●

Large Diameter Double Drums


1. Adopts horizontal type three pass structure and large furnace, to ensure the sufficient cobmustion. The large diameter double drums increase the radiant heating surface, sufficienct output and high thermal efficiency.

2. The furnace wall was poured entirely by the heat-resistance concrete and high-temperature-resistance refractory brick, excellent leakproofness, no air leakage, low heat loss.

3. Equipped with automatic chain grate, low manual cost, and low fuel cost.

4. Equipped with economizer, make full use of the heat of flue gas, decrease the exhaust smoke temperature, increase the thermal efficiency.

5. The boiler absorb the advantage of the fast assembly, compact structure, the boiler room is the single layer layout, convenient for installation , has short installation period and low cost.


Model Rated Thermal Power
( MW)
Rated Pressure
Outlet Water Temperature
Inlet/Return Water Temperature
Overall Dimension of biggest part for
transfortation L*W*H(mm)
SZL1.4-0.7/95/70-AII 2/1.4 0.7 95 20/70 5500×2350×3650
SZL2.8-0.7/95/70-AII 4/2.8 0.7 95 20/70 7730×2360×3520
SZL4.2-1.0/95/70-AII 6/4.2 1 95 20/70 Up  6150×2840×3540 down 7275×2852×2580
SZL5.6-1.0/95/70-AII 8/5.6 1 95 20/70 up 6971×2933×3540 down 8056×2945×2580
SZL7-1.0/95/70-AII 10/7.0 1 95 20/70 up 7855×3240×3540 down 9025×3200×2580
SZL10.5-1.0/115/70-AII 15/10.5 1 115 20/70 Up 10000×3240×3540 down 12000×3200×3080
SZL14-1.0/115/70-AII 20/14 1 115 20/70 up 11000×3240×3540 down 14000×3200×3080
Note: Parameter is for reference only, if any changes should follow the actual drawing




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Address:No.11 Minhe Road, Private Industrial Park, Development Zone, Kaifeng City


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