Corner Tube Coal Biomass Boiler

DHL series  boiler  is an energy-saving  product with  reliable water circulation, efficient combustion and  low pollution emission designed by independent innovation through the introduction of technology from GEF project and the research of corner tube boiler products and technologies at home and abroad, according to the technical development characteristics of China's coal-fired chain grate and market demand.

Uses: power generation, heating, chemicals, food, rubber.

DHL biomass corner tube boilers offer advantages such as high thermal efficiency, low operating costs, long-term trouble-free operation, low boiler outlet dust emissions, light weight, low infrastructure investment, and direct factory sales. On-site installation requires minimal work and has a short installation period. These features make them the latest alternative to large-capacity steam boilers.

Technical Features

Core Technologies

1. Self-supporting structure

2. Beam grate technology

3. Wide fuel adaptability furnace arch design

4. Secondary air turbulent combustion design

5. High-temperature fly ash separation + internal fly ash fluidized recombustion

6. Flag-type convection heating surface with constant velocity design

Technical Features

1. High Thermal Efficiency – The large cross-section and blast furnace design, combined with secondary air and an optimized rear arch, effectively promotes the complete combustion of fly ash and slag.

2. Seismic Resistance – The corner tube boiler adopts a frameless structure, with the entire weight supported by membrane water-cooled walls and downcomers, resulting in excellent seismic resistance.

3. Cost Savings – Compact structure, low steel consumption, lightweight, less infrastructure investment, modular assembly, minimal on-site installation work, and short installation cycle.

4. Reliable Water Circulation – Due to the unique recirculation pipe and steam outlet pipe design of the corner tube boiler, water circulation start-up is faster and safer.

5. Low Pollution Emissions – The multi-flue arrangement for secondary separation significantly reduces the initial dust concentration in the boiler.

6. High Steam Purity – Pre-separation of gas and water in the steam overflow system results in very high steam dryness.

Why Choose Yuanda Boiler?

Company Strength

■ Founded in 1956, a premium supplier assessed, certified, and inspected by SGS Group. Leading industrial boiler manufacturer in China.
■ Holds international boiler certifications: CE, ASME, DOSH, EAC, GOST, ISO
■ Over 17 years of export experience, gold-level supplier, ensuring payment and delivery.
■ Professional team integrating R&D, production, sales, and service.
■ 53,053㎡ Factory area, supporting video/VR factory audits or third-party inspections.
■ Engineers serving over 50 countries.
■ Products sold to over 130 countries/regions, covering food, beverage, textiles, paper, wood industries. Serving over 100,000 customers.

Products & Technology

■ Diverse Product Range: Fire-tube boilers, water-tube boilers, water-fire-tube boilers, combined boilers, vertical boilers, cogeneration boilers, waste heat recovery boilers, skid-mounted boilers, and mobile containerized boilers.
■ Flexible Fuels: Supports various fuels such as natural gas, biogas, lpg, diesel, heavy oil, dual fuels, coal, biomass, wood chips, sawdust, bagasse, wood residue, sawdust, forest waste, palm shells, hybrid biomass/gas, palm fiber, rice husks, walnut shells, electricity, etc.
■ Collaboration with advanced boiler research institutes ensures advanced technology and high energy efficiency.

Services & Markets

■ Local Projects: We have installed many boiler projects in different countries, can provide boiler case studies.
■ High Repurchase Rate: 55% of our customers are repeat customers or referral customers.
■ Local Support: We have long-term, reliable local agents, can provide one-stop service from installation and training to maintenance.
■ Comprehensive Service: From project planning to after-sales support, we provide comprehensive support throughout the whole boiler life, with 24/7 online support and immediate response.