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DZL Automatic Chain Grate Steam Boiler Factory China Industrial Boiler Suppliers

Looking for reliable China suppliers? Our factory provides the DZL automatic chain grate steam boiler featuring arched tube sheets and spirally corrugated tubes to prevent cracking and maximize efficiency.



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The DZL series automatic chain grate steam boiler is a high-efficiency industrial heating solution specifically engineered for coal and biomass fuels. By integrating an advanced automatic chain grate system with a robust structural design, this boiler ensures stable steam production while significantly reducing manual labor and operational costs for energy-intensive manufacturing processes.

Designed with precision engineering, the DZL boiler features a spirally corrugated tube structure and an optimized furnace arch to maximize heat transfer and minimize pollutant emissions. Whether utilized for industrial processing or facility heating, the DZL series delivers a superior balance of thermal efficiency, structural durability, and environmental compliance.

Detailed Parameters

Capacity Range1 - 20 t/h Rated Pressure0.7 - 1.25 MPa
Steam Temperature170 - 194 ℃ Design EfficiencyUp to 80.4%
Heating Area30.5 - 712.1 ㎡ Grate Effective Area2 - 22.3 ㎡
Fuel Consumption191.5 - 2980 kg/h Smoke Temp153.5 - 167.5 ℃
Boiler Weight15 - 69 t (Total) Dimensions (Max)8.4 × 3.55 × 3.54 m

Key Advantages

Anti-Cracking Design

Utilizes arched tube sheets and spirally corrugated tubes to prevent cracking and enhance structural integrity.

Rapid Steam Rate

Optimized corrugated tubes strengthen heat transfer, enabling faster temperature rise and higher steam output.

Sludge Elimination

The ascending calandria arrangement eliminates dead water zones, preventing sludge buildup at the drum bottom.

Low Emissions

Rational furnace arch design improves combustion and enhances dust falling to reduce environmental pollutants.

High Thermal Efficiency

Precision-sealed wind boxes optimize air distribution, reducing the excess air coefficient for better efficiency.

Fuel Versatility

Engineered to handle both coal and various biomass fuels, providing flexibility in energy sourcing.

Product Gallery

Management Platforms

Fuel Logistics

Automated chain grate system ensures seamless fuel feeding and ash removal.

Combustion Control

Precision wind box adjustment for optimized air-fuel ratio and efficiency.

Thermal Monitoring

Real-time tracking of steam temperature and rated pressure for safety.

Emission Tracking

Monitoring smoke emission temperatures to ensure environmental compliance.

Water Management

Advanced calandria design to prevent scale and sludge sedimentation.

Maintenance Alerts

Systematic checks on tube integrity and grate wear for prolonged lifespan.

Investment Return Comparison

Comparison MetricTraditional Manual BoilersDZL Automatic Boiler
Labor CostHigh (Manual feeding/ash)Low (Automatic system)
Thermal EfficiencyLower (65-75%)Higher (Up to 80.4%)
Fuel FlexibilityLimitedCoal & Biomass Versatile
Emission LevelsHigh pollutantsOptimized Low Emissions
Maintenance CycleFrequent tube cleaningExtended (Anti-sludge design)

Frequently Asked Questions

Q: What is the primary advantage of the DZL's spirally corrugated tubes?

The spirally corrugated tubes increase the heat transfer area and enhance the heat transfer coefficient, resulting in a faster steam rate and improved overall thermal efficiency.

Q: Can this boiler operate with biomass fuels instead of coal?

Yes, the DZL series is specifically designed as a coal or biomass fired boiler, allowing users to switch to sustainable biomass energy sources to reduce costs and carbon footprints.

Q: How does the design prevent the drum from cracking?

The boiler utilizes an arched tube sheet combined with corrugated tubes, which allows for better thermal expansion and stress distribution, effectively preventing cracking.

Q: What is the purpose of the ascending calandria arrangement?

This arrangement eliminates dead water zones at the bottom of the drum, making it difficult for sludge to subside and ensuring better cooling of the high-temperature drum region.

Q: How does the DZL boiler reduce air pollution?

Through a rational furnace arch design that improves combustion conditions and enhances the dust falling function, significantly reducing pollutant emissions.

Q: What is the typical efficiency range for the DZL series?

Depending on the model capacity, the design efficiency ranges from approximately 78% to 80.4%, ensuring optimal energy utilization.

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