DHL-series-biomass-fired-corner-tube-steam-boiler

DHL Series Biomass Fired Corner Tube Steam Boiler

biomass fired corner tube steam boiler, DHL series boiler, 10-50T/H steam boiler, biomass & coal fuel boiler, high efficiency steam boiler, low NOx emissions boiler, membrane water wall boiler, corrugated cross-beam grate boiler

Model: DHL

Rated Evaporation: 10-50T/H

Rated Steam Pressure: 1.2/1.6/2.5Mpa

Design Fuel: Coal, Biomass

Outlet Temperature: 194~400℃

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DHL Series Biomass Fired Corner Tube Steam Boiler

The DHL series biomass fired corner tube steam boiler is a high-efficiency, large-capacity boiler designed with advanced membrane water wall technology adapted from power plant boilers. It features a unique corner tube structure, where four large-diameter downcomer tubes are positioned at each corner to serve as both support and part of the water circulation system. This bulk-type boiler adopts a fully enclosed membrane wall and flag tube convective heating surface, ensuring compact structure, quick temperature rise, and superior sealing performance. The combination of natural and forced water circulation guarantees safe, stable, and reliable operation. The self-supporting furnace and convection heating surfaces reduce steel consumption and lower civil construction and maintenance costs. Capable of burning a wide range of biomass fuels — including wood chips, rice husk, bagasse, coconut shell, peanut shell, and cotton shell — this boiler is an environmentally friendly alternative to traditional coal-fired systems.

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Technical Parameter

Model	Rated Evaporation Capacity(t/h)	Rated Pressure (Mpa)	Rated Steam Temperature(℃)	Feed Water Temperature(℃)
DHL20-1.25-AII	20	1.25	194	105
DHL20-2.5-AII	20	2.5	226	105
DHL25-1.25-AII	25	1.25	194	105
DHL25-1.6-AII	25	1.6	204	105
DHL35-1.25-AII	35	1.25	194	105
DHL35-1.6-AII	35	1.6	204	105
DHL35-2.5/400-AII	35	2.5	400	105
Note: Parameter is for reference only, if any changes should follow the actual drawing

Available Fuels

Item	Low Heat Value
II Class Bituminous	4500-5000 kcal/kg
Pellet	3000-4200
Wood Chip(oak)	3830 kcal/kg
Rick Husk	2600-3600 kcal/kg
Pale Shell	2997 kcal/kg
Coconut Shell	3885 kcal/kg
Sawdust	3120 kcal/kg
Bagasse	1665 kcal/kg
Corn Cobs	4241 kcal/kg

Bagasse

Cassawa Waste

Coconut Husk

Pale Fiber

Corn Cobs

Pale Bunch

Pellet

Rick Husk

Sawdust

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Biomass Fired Corner Tube Steam Boiler

Product Advantages

High Thermal Efficiency

The boiler features a large furnace and a fully enclosed membrane wall structure, which enhances combustion efficiency and minimizes heat loss—resulting in higher overall thermal efficiency.

Low NOx Emissions

Equipped with a secondary air distribution system, the boiler ensures more uniform air mixing and improved combustion, effectively reducing the generation of nitrogen oxides (NOx).

Broad Fuel Compatibility

With an independent furnace arch design, the boiler is adaptable to various biomass fuels such as rice husks, wood chips, sawdust, corn cobs, and biomass pellets.

Corrugated Cross-Beam Grate

Adopts a corrugated cross-girder chain grate design that offers low running resistance, better cooling performance, reduced failure rate, and minimal fuel leakage.

Customizable System Design

Tailor-made solutions for fuel feeding, slag removal, and gas treatment help users optimize layout, reduce installation complexity, and save on operation and maintenance costs.