Steam boilers remain indispensable across industries such as brewing, chemicals, textiles, and construction materials, where stable and efficient steam supply determines production quality and cost control. On the market, the main types of steam boilers can generally be grouped into gas-fired, biomass-fired, and coal-fired systems. Gas-fired boilers are known for clean combustion and low emissions, biomass boilers appeal to enterprises seeking renewable energy solutions, and coal-fired boilers remain cost-effective where coal is widely available but face stricter regulatory limits.

With the increasing demand for energy-efficient and environmentally responsible solutions, the market has developed several types of steam boilers, each designed with unique features, strengths, and trade-offs. Understanding the main types of steam boilers is essential for enterprises that wish to make informed decisions about equipment investment, operational efficiency, and long-term sustainability.

While each of these types of steam boilers offers different advantages and trade-offs, choosing the right supplier is equally important. Among Chinese manufacturers, ZOZEN Boiler has built a strong reputation by delivering advanced gas-fired, biomass-fired, and coal-fired steam boilers that balance efficiency, environmental performance, and reliability.

ZOZEN 18 ton SZS gas-fired boiler

ZOZEN Boiler Solutions: WNS, DZL, and SZL Series

The SZS series gas-fired steam boiler is a flagship product from ZOZEN, designed for industries requiring large-scale, stable, and efficient steam output. Built with a D-type water-tube structure, the SZS boiler features a compact layout that enhances heat transfer efficiency and allows for higher capacity compared with traditional fire-tube models. The separation of the furnace and convection sections not only improves combustion performance but also reduces heat loss, leading to better fuel utilization.In terms of combustion technology, the SZS boiler is equipped with advanced burners capable of supporting natural gas, light oil, or other clean fuels. Optional low-NOx burners help enterprises comply with strict emission standards, reducing environmental impact while maintaining high combustion efficiency. The double-drum design improves water circulation, enabling rapid steam generation and consistent output, which is particularly valuable for industries with fluctuating steam demands.Operational safety and automation are also integral features. The SZS boiler incorporates multiple interlock protection systems for pressure, temperature, and water level, ensuring stable and safe operation even under demanding industrial conditions. These technical strengths make the SZS series well-suited for industries such as brewing, food processing, chemicals, and textiles, where continuous high-quality steam is indispensable.

The DZL series biomass-fired steam boiler highlights ZOZEN’s commitment to sustainability. Built as a single-drum chain-grate boiler, the DZL is optimized to burn biomass fuels such as wood chips, rice husks, and agricultural residues. This makes it especially valuable in regions where renewable agricultural resources are abundant and cost-effective.The technical design emphasizes combustion efficiency and environmental performance.This ensures higher thermal efficiency while minimizing particulate emissions. The water-cooling wall structure strengthens heat transfer and improves durability, enabling continuous long-hour operation in industrial environments.The environmental benefits are equally important. By using renewable fuels, enterprises can reduce fossil fuel dependence and achieve carbon emission targets. This aligns with international sustainability trends and government incentives supporting renewable energy. Industries such as paper mills, agricultural product processing, and building materials manufacturing often adopt the DZL boiler to combine production efficiency with ecological responsibility.

The SZL series coal-fired steam boiler is engineered for industries requiring large-scale, long-duration steam supply. Featuring a double-drum, water-tube structure, the SZL model offers excellent capacity and pressure-bearing capabilities. Its design includes independent air chambers and precise air distribution systems, which enhance combustion efficiency and ensure even fuel utilization.Unlike older coal-fired designs, ZOZEN has modernized the SZL boiler to address environmental concerns. By incorporating advanced dust-removal and desulfurization systems, emissions are effectively reduced, helping enterprises remain compliant with stricter regulations while continuing to benefit from coal’s affordability in certain regions. For industries such as textiles, metallurgy, and chemicals, where fuel cost control and reliable high-volume steam are priorities, the SZL boiler remains a practical and robust solution.

Through the WNS, DZL, and SZL product lines, ZOZEN demonstrates the ability to cover a wide spectrum of industrial needs, reflecting the diversity of types of steam boilers while ensuring efficiency, sustainability, and reliability.

Brewing Industry and the SZS Series 18-Ton Gas Steam Boiler

Steam is an irreplaceable energy source for fermentation, distillation, and sterilization processes. For large-scale, specialized wineries, equipping them with an efficient, energy-saving, and stable steam boiler is crucial for ensuring product quality and sustainable development.

To further improve production efficiency and support green development, a winery selected the ZOZEN Boiler SZS series 18-ton gas-fired steam boiler, primarily based on the following advantages:

High Efficiency and Energy Saving: The SZS series utilizes a full-membrane water-cooled wall structure and advanced burners, achieving thermal efficiency exceeding 98%, significantly reducing gas consumption.

Environmental Compliance: Low-NOx combustion technology effectively controls nitrogen oxide emissions, easily meeting local and national environmental standards.

Intelligent Control: Equipped with an automated control system, it offers convenient operation and automatically adjusts steam pressure and output to meet diverse process requirements.

Safety and Stability: Multiple safety protection devices ensure long-term, continuous, and stable operation of the boiler, enabling worry-free year-round production for the winery.

For breweries, stable steam translates directly into product consistency and production efficiency. The SZS boiler’s design ensures precise temperature control, low emissions, and reduced fuel consumption. This project demonstrates how ZOZEN’s technological expertise supports industry-specific requirements, reinforcing its standing as a trusted provider of different types of steam boilers.

Choosing the Right Types of Steam Boilers with ZOZEN

The global market offers several types of steam boilers, each with its benefits and challenges. Gas-fired boilers provide efficiency and environmental compliance, biomass boilers offer renewable and eco-friendly alternatives, and coal-fired boilers continue to serve cost-sensitive industries requiring large-scale steam.

Yet beyond the equipment itself, selecting the right manufacturer is crucial. ZOZEN Boiler has established itself as a reliable partner by offering a diverse portfolio of WNS, DZL, SZL, and SZS series boilers. Its commitment extends beyond supply, with comprehensive after-sales services including installation support, operator training, and long-term maintenance. This ensures that customers benefit not only from advanced technology but also from sustained reliability throughout the boiler lifecycle.

For enterprises exploring the many types of steam boilers, ZOZEN provides a combination of technical strength, product diversity, and service commitment, making it a trusted choice for industries worldwide.