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SZS Series Double Drum Water Tube Steam Boiler China Factory Suppliers

Looking for reliable China suppliers? Our SZS series gas-fired double drum water tube boilers from our leading factory feature forced circulation to prevent gasification and ensure maximum thermal efficiency.



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The SZS series double-drum water tube steam boiler is a high-performance industrial heating solution specifically engineered for gas-fired operations. Utilizing a sophisticated forced circulation system in high-temperature zones, this boiler ensures reliable cooling of all heating surfaces to prevent gasification and maximize operational stability. Its robust design is complemented by explosion-proof doors and advanced flame detectors, ensuring the highest standards of safety and reliability for demanding industrial environments.

Designed for efficiency and environmental sustainability, the SZS series features a full-membrane water-cooled wall structure within a spacious combustion chamber. By adopting micro-positive pressure combustion and high-grade aluminum silicate fiber insulation with refractory cement, the boiler maintains an external body temperature below 45°C. This precision engineering significantly minimizes heat loss and enhances overall thermal efficiency, providing a pollution-free operating environment for modern enterprises.

Detailed Parameters

Capacity Range10 t/h to 50 t/h Rated Pressure1.25 MPa (up to 1.6 MPa)
Steam Temperature194°C to 204°C Thermal Efficiency92.8% - 93.2%
Fuel CompatibilityGas or Diesel Oil Boiler Weight30.6 T to 70 T
Gas Consumption790.3 to 3898 Nm³/h Diesel Consumption679.3 to 3398 Kg/h
Max Dimensions (L×W×H)12820 × 4390 × 4400 mm Steam Outlet DN150 to 300

Key Advantages

Enhanced Safety

Equipped with explosion-proof doors and precision flame detectors to ensure secure and reliable continuous operation.

Forced Circulation

The high-temperature zone utilizes forced circulation to cool heating surfaces effectively, preventing gasification.

High Efficiency

Narrow-pitch tube-membrane water-cooled walls improve airtightness and maximize thermal efficiency up to 93.2%.

Eco-Friendly Design

Micro-positive pressure combustion ensures a pollution-free operating environment, meeting strict emission standards.

Low Heat Loss

Premium aluminum silicate fiber insulation keeps surface temperatures below 45°C for superior energy conservation.

Easy Maintenance

Strategically placed fire viewing holes and rear inspection doors facilitate effortless cleaning and overhauling.

Product Gallery

Management Platforms

Load Monitoring

Real-time tracking of steam capacity and output to ensure stable supply for production lines.

Combustion Control

Precision adjustment of gas/diesel flow via micro-positive pressure combustion systems.

Safety Alerts

Instant notification via flame detectors and pressure sensors to prevent operational hazards.

Efficiency Tracking

Digital monitoring of thermal efficiency and heat loss to optimize fuel consumption.

Inventory Logs

Automated recording of fuel consumption (Nm³/h or Kg/h) for precise cost accounting.

Maintenance Scheduler

Programmed alerts for cleaning and overhauling using the built-in inspection doors.

Investment Return Comparison

Performance MetricStandard BoilerSZS Series Boiler
Thermal Efficiency85% - 88%Up to 93.2%
Fuel ConsumptionHigher BaselineOptimized Low Consumption
Heat LossStandard InsulationUltra-Low (< 45°C Surface)
Operational SafetyBasic ProtectionExplosion-Proof & Flame Detect
Maintenance CycleFrequent Manual CheckStreamlined Access Points

Frequently Asked Questions

Q: What are the primary advantages of a double-drum water tube design?

Double-drum designs allow for better steam-water separation and higher pressure capabilities, providing greater stability and efficiency compared to single-drum or fire-tube systems.

Q: How does the SZS series reduce heat loss during operation?

It uses high-quality aluminum silicate fiber combined with refractory cement, keeping the furnace body temperature below 45°C and utilizing a narrow-pitch tube-membrane structure.

Q: Can the SZS boiler run on fuels other than natural gas?

Yes, the SZS series is versatile and can be configured for gas or diesel oil firing, depending on the specific model and customer requirements.

Q: What safety features are included in the boiler's design?

The boiler is equipped with explosion-proof doors and high-sensitivity flame detectors to ensure a safe operating environment and prevent accidental ignition or pressure surges.

Q: How is the maintenance of the SZS boiler simplified?

The design includes fire viewing holes at the front and back of the drums, along with a dedicated rear inspection door, making cleaning and overhauling fast and efficient.

Q: What is the typical thermal efficiency for the SZS range?

The thermal efficiency ranges from 92.8% for the SZS10 model up to 93.2% for larger capacities like the SZS40 and SZS50.

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