The DHL corner tube boiler is engineered for continuous industrial operation. It features a self-supporting frame design that reduces structural complexity, lowers civil construction costs, and improves operational stability.
This series supports multiple fuel types, including coal, biomass, and mixed fuels. It offers fast startup times, a compact footprint, and simplified maintenance—key advantages for industrial facilities seeking reliable steam supply.
The DHL corner tube boiler delivers consistent steam output for industrial production, power generation, and district heating. Its robust design ensures stable operation even with varying fuel quality, making it suitable for chemical plants, food processing facilities, paper mills, and large-scale heating projects.
What fuel type(s) will you use (coal, biomass, or a combination)?
What is your required steam capacity and operating pressure?
What are your site limitations and local emission requirements?
Our team will configure a DHL corner tube boiler to meet your specific operational needs, ensuring efficiency, compliance, and cost-effectiveness. Below is a detailed breakdown of the series’ specifications, key features, and application scenarios.
Corner tube steam boiler is a boiler with large diameter thick-wall drop tube located in the four corners of the boiler and composed of a frame supporting the overall weight. Water cycle is unique and safe, boiler start quickly, structure compact, could effectively save steel and boiler civil construction costs and follow-up maintenance costs. Corner tube boiler furnace and convection heating surface adopt self-supporting structure.
DHL Corner Tube Boiler Delivery 
Corner Tube Boiler Components Large furnace with full membrane sealing structure, more suitable for the combustion of biomass boiler. Lower heat loss, higher thermal efficiency.
The corner tube boiler can be applied to various of biomass fuels with high combustion efficiency, especially can solve the impact of the biomass pellet fuel on the heating surface of the boiler when the content of chlorine and sulfur is high, reduce the corrosion and wear of the equipment.
The drum of the corner tube boiler is external longitudinal arranged or a horizontal arranged, the furnace outlet is arranged at a high position, and the combustion space is relatively sufficient.
DHL corner tube boiler is a self-supporting structure without steel frame, featuring reliable water circulation, sufficient combustion space, and high heat exchange efficiency for coal and biomass fuels.
The table below lists the key specifications for our DHL boilers. All values are subject to change based on final engineering drawings.
| 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 actual drawings. | ||||
DHL Boiler 3D Model
1 2 3 4 5 6 DHL chain grate boiler features excellent fuel adaptability, suitable for a wide range of bulk solid fuels with stable and reliable combustion performance.
It adopts optimized grate structure and air distribution design, ensuring sufficient combustion for coal, biomass pellets, wood chips, straw and other fuels.
With high combustion efficiency and stable operation, it effectively reduces fuel consumption and meets the long-term running needs of various heating and production scenarios.
Equipped with full-coverage operation platform, anti-slip stairs and safety guardrails, making daily inspection, component replacement and maintenance safer and more efficient without additional auxiliary facilities.
Most components are assembled and welded in factory, only simple connection and commissioning are needed on site. It effectively shortens installation cycle, saves labor cost and puts into production quickly.
Optimized steam, water and flue gas pipeline arrangement with small flow resistance, uniform stress and strong shock resistance. It can maintain stable performance under long-term continuous operation and reduce downtime maintenance.
This is a completed domestic project in China featuring a DHL corner tube boiler. Full installation and commissioning took 5 months, and the unit officially entered trial operation on May 20, 2026. Explore key details of the project below.
The complete boiler plant is designed with optimized workflow zones, including fuel storage, combustion, steam generation, and emission control. This layout ensures smooth material flow and minimizes on-site operational complexity.
The corner tube design allows for a modular, field-assembled build. All major components are prefabricated to tight tolerances, then erected on-site to meet structural and thermal performance requirements.
The project followed a tight timeline, with structural erection, equipment installation, piping work, and system testing completed within 5 months. Trial operation began on May 20, 2026, confirming stable and compliant performance.
The site includes a dedicated fuel yard with receiving hoppers and conveyor systems. Wood chips and other biomass are handled and fed automatically, ensuring consistent combustion and reducing manual labor needs.
A full electrical and control room is integrated with the boiler system. Operators can monitor and adjust all key parameters from the central panel, ensuring safe, efficient, and unattended operation.
The flue gas path includes fans, ducts, and treatment equipment to meet local emission standards. The system is designed for low maintenance, reliable operation, and long service life.
Check our actual DHL boiler installations across different industries. See how our units perform in real working conditions with genuine customer feedback.
You’ve learned all about our DHL corner tube boiler—from its self-supporting structure, fuel adaptability, to real on-site project performances and technical details. Now, let’s turn your needs into a tailored solution.
Свяжитесь с нами по электронной почте: [email protected], или через WhatsApp, либо заполните форму ниже.
Уточнение требований заказчика
Разработка технического решения
Изготовление и отгрузка оборудования
Монтаж на месте эксплуатации
Ввод оборудования в эксплуатацию
улица Минхэ, дом 11, частный промышленный парк, зона развития города Кайфэн.
Wechat/WhatsApp:+8618803691988
E-mail: [email protected]
Вы можете связаться с нами по телефону, электронной почте или через онлайн-форму ниже. Наши специалисты свяжутся с вами в ближайшее время.
Связаться сейчас!Компания оборудования котлов Xinli (г. Кайфэн). Все права защищены.
WhatsApp: 
E-mail: 
