Efficient and Reliable Steam Supply with ZOZEN SZS Boiler Solutions

In modern industrial production, steam plays a vital role in driving key processes such as drying, concentration, sterilization, and material heating. As enterprises shift toward higher energy efficiency and stricter environmental compliance, the szs boiler has emerged as one of the most popular options among gas-fired boiler types. With its advanced structure, strong adaptability, and stable performance, this type of boiler meets the diverse needs of chemical, food, textile, paper, and fine processing industries.

The szs boiler is characterized by its double-drum, D-type arrangement and fully membrane wall design, which ensures high thermal efficiency, compact structure, and reduced heat loss. Compared with traditional fire-tube boilers, the SZS design allows larger heating surfaces and stronger circulation, resulting in faster steam generation and greater stability under continuous operation. Its fully sealed water-cooled walls improve durability and energy efficiency, while the horizontal layout facilitates convenient maintenance and compact installation in limited plant spaces.

Technical Strength and Structural Advantages of ZOZEN SZS Series Gas-Fired Steam Boiler

The SZS series developed by ZOZEN Boiler represents a modern interpretation of high-efficiency gas-fired boiler design. It features a D-type arrangement, where the furnace and convection section are symmetrically distributed. The boiler body consists of two major parts: the upper section, which forms the main heating surface and steam drum, and the lower section, which integrates the combustion chamber and flue gas flow path. This design not only improves the rigidity of the overall structure but also ensures an even heat transfer distribution across the boiler body.

The fully membrane wall construction is one of the core design elements of the szs boiler. All furnace walls, including the front and rear walls, are made of water-cooled tubes welded into a continuous gas-tight structure. This design eliminates the need for refractory materials, significantly reduces heat loss through the furnace wall, and enhances the boiler’s sealing performance. The result is improved thermal efficiency and stable operation even under high load conditions.

Inside the furnace, ZOZEN’s SZS boiler adopts a large-volume combustion chamber that ensures full combustion of fuel gas. Combined with an advanced burner system, the boiler achieves uniform flame distribution, preventing local overheating and ensuring complete fuel utilization. The flue gas then passes through a series of high-efficiency convection tube bundles arranged between the upper and lower drums, maximizing heat transfer from the hot gas to the water-steam system.

In addition, the SZS boiler integrates energy-saving components such as economizers and condensers to recover residual heat from exhaust gases. The economizer preheats the feedwater using waste heat from flue gas, while the condenser utilizes the latent heat of vaporization from water vapor in the flue gas, raising the overall boiler efficiency to above 98%. This combination allows enterprises to reduce fuel consumption and operational costs while contributing to cleaner emissions and sustainable production.

From a control perspective, the SZS boiler is equipped with an intelligent PLC-based control system that allows for real-time monitoring and precise adjustment of combustion parameters, pressure, and temperature. This system enhances operational safety, supports automatic start-up and shutdown, and provides fault alarms and protection functions.

ZOZEN also emphasizes environmental compliance in its design. The SZS series gas-fired boiler can be paired with low-NOx burners, which effectively reduce nitrogen oxide formation during combustion. Through optimized air-fuel mixing and staged combustion technology, NOx emissions are maintained within strict regulatory limits, supporting enterprises in achieving both high efficiency and environmental performance.

Case Study: SZS Boiler Supporting Starch Production Efficiency

In the corn starch production process, steam serves as a crucial energy source across multiple stages, including raw material feeding, soaking liquid circulation, evaporation, and drying. The stability and efficiency of steam supply directly affect the quality of the final product and the overall production cost. Recognizing this, a leading starch manufacturing enterprise recently partnered with ZOZEN Boiler to upgrade its energy system.

With years of experience serving the food industry, ZOZEN has established long-term cooperation with numerous starch and food processing plants. For this project, ZOZEN provided a 20-ton SZS series condensing gas-fired steam boiler, customized to meet the client’s requirements for efficient and environmentally responsible steam generation.

The SZS boiler’s D-type configuration provides a large furnace volume and ample radiant heating surface, ensuring complete combustion of natural gas. The furnace walls, made entirely of membrane water-cooled panels, deliver exceptional airtightness, effectively preventing heat leakage and improving the boiler’s overall efficiency. The integrated condenser and economizer systems capture waste heat from flue gas, enabling the boiler’s thermal efficiency to reach up to 98%. This feature significantly reduces energy consumption, supporting the starch factory’s goal of achieving high-efficiency and low-emission production.

During operation, the boiler demonstrated excellent steam quality and reliability. The upper steam drum, equipped with a steam-water separator, ensured that the generated steam remained dry and clean, essential for processes such as drying and concentration. Consistent steam parameters improved production stability and reduced product variation.

In addition, the boiler’s low-NOx burner effectively suppressed nitrogen oxide generation during combustion, keeping emission levels within local environmental standards. This made the installation particularly suitable for the food industry, where sustainability and cleanliness are increasingly prioritized.

ZOZEN’s professional project management and technical support played a vital role throughout the implementation process. From initial system design and performance evaluation to on-site installation guidance and operator training, the company provided comprehensive services to ensure smooth commissioning and stable long-term operation. The starch producer was able to achieve reliable steam supply, lower fuel consumption, and reduced maintenance downtime—all of which contributed to greater production efficiency and environmental compliance.

Conclusion

The szs boiler represents the evolution of industrial steam generation technology, combining a D-type double-drum structure, full membrane wall design, and advanced energy recovery system. ZOZEN Boiler has refined this concept through its SZS series, offering an integrated solution that balances performance, efficiency, and environmental responsibility.

Through real-world applications such as the starch processing project, the advantages of ZOZEN’s SZS boiler—stable steam output, high efficiency, and low emissions—have been fully demonstrated. Supported by comprehensive technical expertise and dedicated after-sales service, ZOZEN Boiler continues to deliver reliable solutions to industries seeking sustainable and efficient steam energy.

For enterprises looking to upgrade their energy systems or improve production efficiency, the ZOZEN SZS boiler stands as a dependable choice—combining proven engineering, thoughtful design, and responsive service to meet the evolving demands of modern industrial production.