In modern industrial processes, the type of water tube boiler plays a crucial role in ensuring stable and efficient thermal energy supply. These boilers are widely used in industries such as chemical manufacturing, textile production, food processing, rubber and tire manufacturing, and energy projects. Unlike fire tube boilers, where hot gases pass through tubes surrounded by water, the type of water tube boiler features a design in which water flows inside the tubes and is heated externally by combustion gases. This structural difference allows for higher pressure and temperature capacities, faster steam generation, and more precise control of thermal output.

Within this context, ZOZEN Boiler, a leading industrial boiler manufacturer, has established itself as a global supplier of high-efficiency types of water tube boiler that meet diverse production demands. With decades of experience and a strong commitment to research and innovation, ZOZEN provides not only reliable thermal equipment but also comprehensive energy solutions tailored to specific industrial needs.

ZOZEN’s Type of Water Tube Boiler: The DZL and SZL Biomass Steam Boilers

ZOZEN Boiler offers multiple types of water tube boiler, with its DZL series three-drum water tube biomass steam boiler and SZL series water tube biomass steam boiler standing out for their technical excellence and strong adaptability to various fuel types and operating conditions.

The DZL series three-drum water tube biomass steam boiler represents a well-engineered design optimized for efficiency and combustion stability. It is configured as a horizontal, chain-grate boiler with three passes of flue gas flow, combining both fire and water tube features. The boiler body adopts a single longitudinal drum layout. Inside the drum, threaded smoke tubes form the convection heating surface, while the drum and water-cooled walls on both sides constitute the radiant heating surface of the furnace. This configuration ensures efficient heat transfer, uniform temperature distribution, and stable combustion under different loads.

ZOZEN 40 ton DZL watertube biomass-fired boiler

The furnace is equipped with a lightweight chain grate and adopts a quick-installed structure, enabling ease of transportation and installation. The combustion system incorporates precisely controlled primary and secondary air supplies, promoting complete fuel combustion while reducing NOx formation. The boiler’s electrical control system allows for stepless grate speed adjustment, limit parameter alarms, and interlock protection. These features ensure safe, flexible, and efficient operation in long-term industrial applications.

As one of the most representative types of water tube boiler in ZOZEN’s biomass product line, the DZL series offers a high degree of fuel adaptability, capable of burning various types of biomass pellets, wood chips, agricultural residues, and other renewable materials. This not only helps enterprises reduce fuel costs but also contributes to resource recycling and environmental compliance.

In parallel, ZOZEN’s SZL series water tube biomass steam boiler demonstrates another refined example of advanced engineering in the type of water tube boiler category. The SZL series is typically designed as a double-drum, vertically arranged, chain-grate boiler. It features a large furnace volume and optimally arranged heating surfaces, allowing for effective combustion of biomass fuels with high volatility. The water walls and convection sections are constructed using membrane wall technology, enhancing the boiler’s gas-tightness and minimizing heat loss.

The SZL series is particularly valued for its high efficiency, often reaching up to 88% with the integration of economizers and air preheaters. Its high steam quality and stable output make it ideal for continuous industrial processes such as chemical drying, food sterilization, paper production, and textile processing. As a type of water tube boiler with proven reliability, it also offers ease of maintenance, automated control, and a strong balance between operational economy and environmental protection.

ZOZEN’s Biomass Steam Boiler in the Rubber and Tire Industry

In industrial sectors such as rubber and tire manufacturing, reliable steam supply is essential for production processes like vulcanization, drying, and heat treatment. A leading example of how a type of water tube boiler can enhance industrial performance is the collaboration between ZOZEN Boiler and General Rubber’s Thailand facility.

Since its establishment in 2019, the General Rubber plant in Thailand has rapidly expanded its annual production capacity from 7.3 million tires to 16 million semi-steel radial tires and 1.3 million all-steel radial tires. To support such high-capacity manufacturing, the factory required a stable, efficient, and environmentally friendly steam source. ZOZEN provided a DZL series 40-ton biomass steam boiler, a key type of water tube boiler, to serve the plant’s energy needs.

This biomass boiler delivers consistent high-temperature steam to multiple production stages, including rubber compounding, tire forming, and vulcanization. Its advanced furnace structure ensures sufficient residence time for biomass combustion, while the large heating surface and well-designed flue gas path maximize heat utilization. As a result, the boiler maintains a thermal efficiency of around 87.5%, which significantly reduces overall energy consumption.

Equally important, the use of biomass fuel has helped the plant lower its carbon footprint and align with global sustainability goals. By using renewable agricultural residues as fuel, the factory benefits from both cost efficiency and environmental responsibility. The system’s intelligent control features allow precise monitoring of combustion parameters, ensuring safe and continuous operation even under varying production loads.

ZOZEN’s Strength as a Global Manufacturer of Water Tube Boilers

As a prominent representative among international boiler companies, ZOZEN Boiler continues to refine its product portfolio across various types of water tube boiler, providing efficient, reliable, and eco-friendly steam solutions to customers worldwide. With advanced production facilities and a professional technical team, ZOZEN ensures that each boiler undergoes rigorous design verification and quality inspection.

Beyond technology, ZOZEN’s commitment to customer satisfaction is reflected in its comprehensive service system. From pre-sale consultation and solution design to on-site installation, commissioning, and long-term maintenance, the company provides professional support at every stage. This ensures that each client receives a boiler system precisely tailored to their operational requirements.

Conclusion

The type of water tube boiler remains indispensable in industrial production, offering superior efficiency, pressure capacity, and steam quality compared to conventional designs. Among global boiler companies, ZOZEN Boiler stands out for its technical innovation, strong manufacturing capability, and customer-focused solutions.

Through advanced series such as DZL and SZL, ZOZEN has demonstrated how efficient, clean, and sustainable energy systems can empower industries to achieve stable growth and environmental compliance. With reliable performance and professional after-sales service, ZOZEN continues to deliver value to clients worldwide, reinforcing its position as a leading force in the type of water tube boiler industry.