Thermal Oil Boiler System Solutions from ZOZEN: Reliable Heat Transfer for Modern Industry

In modern industrial operations, the demand for stable, efficient, and precise heat supply is growing rapidly. For many production processes, high-temperature heating is required, yet the risk of overheating or uneven distribution must be avoided. This is where the thermal oil boiler system demonstrates its unique value. Unlike steam or hot water boilers, a thermal oil system operates at relatively low pressure while delivering high outlet temperatures, often reaching 320°C. This not only ensures energy efficiency but also provides reliable temperature control across demanding industrial applications.

Because of these advantages, the thermal oil boiler system has become widely used in industries such as chemical production, plastics, building materials, textiles, synthetic fibers, wood processing, and new materials. By providing precise and stable heating, it supports processes like polymerization, drying, vulcanization, laminating, and other heat-intensive operations. Recognizing these industry needs, ZOZEN Boiler has developed a range of advanced thermal oil boilers that combine safety, efficiency, and environmental performance, serving both domestic and international clients.

ZOZEN YQW Series Gas-Fired Thermal Oil Boiler System

The YQW thermal oil boiler adopts a horizontal coil-type structure, in which the radiant heating surface is arranged with a large-volume furnace coil. This layout ensures full fuel combustion and efficient heat transfer. The design eliminates the need for water treatment, reducing operational complexity compared to steam systems, and the coil structure prevents tube explosion risks common in high-pressure steam boilers.The inner coil serves as the radiation heating surface, while the outer coil acts as the convective heating surface. The compact arrangement allows for efficient use of furnace volume, reducing footprint while maximizing heating capacity. Additionally, the boiler body is equipped with high-quality insulation materials, minimizing heat loss and ensuring operational efficiency.

The YQW series thermal oil boiler system is designed to handle wide output ranges, with heat capacities typically from 1400 kW up to more than 14,000 kW. In practical applications, this means the system can easily adapt to medium and large-scale industrial production needs. The system operates at low pressure while achieving outlet oil temperatures up to 320°C, delivering both safety and efficiency.The closed-loop circulation system ensures that the thermal oil circulates without evaporating, preventing energy loss. At the same time, the system’s precise temperature control provides stable heating for sensitive processes where consistency is critical.

The YQW boiler is equipped with internationally advanced low-NOx burners, capable of firing natural gas, liquefied petroleum gas (LPG), or other clean fuels. The large combustion chamber design ensures complete fuel burning, reducing unburned particles and minimizing emissions. By using staged combustion and optimized flame geometry, nitrogen oxide formation is significantly reduced, helping enterprises meet strict environmental regulations.To further improve efficiency, the boiler incorporates waste heat recovery devices, such as economizers and air preheaters, which utilize residual heat from flue gases to preheat combustion air or return oil. This design enables the system to achieve thermal efficiency above 92%, reducing energy costs and environmental impact.

Safety is at the heart of ZOZEN’s YQW design. Each thermal oil boiler system includes multiple protective measures, such as:

Over-temperature protection: automatic shutdown if the oil temperature exceeds the set value.

Low-flow protection: ensures adequate circulation of thermal oil to prevent overheating.

Expansion tank system: balances volume changes in the thermal oil, ensuring stable pressure.

High-quality thermal oil pumps: guarantee stable circulation throughout the heating network.

PLC automatic control system: provides continuous monitoring, alarms, and interlocks for safe, unattended operation.

These features ensure the YQW boiler operates safely even under long-term continuous high-temperature use, protecting both equipment and personnel.

The YQW boiler’s modular skid-mounted design simplifies installation and reduces on-site construction time. Routine maintenance is also straightforward, as the system does not require water treatment equipment or deaerators, which are necessary in steam systems. The use of advanced refractory materials in the furnace lining prolongs service life, while inspection ports and clean-out doors allow for easy servicing.Taken together, these technical advantages make the YQW series a highly efficient, safe, and user-friendly thermal oil boiler system for a wide variety of industrial clients.

Case Study: Thermal Oil Boiler Project

A new materials company recently launched an expansion project to produce 6,000 tons of related products annually. To meet the demand for stable and efficient thermal energy during production, Yuechun Technology decided to introduce ZOZEN Boiler’s YY(Q)W series 3 million kcal gas-fired thermal oil boilers, aiming to improve energy efficiency and further enhance its competitiveness in the new materials sector.

For this project, ZOZEN Boiler provided a customized solution, achieving the precise temperature control necessary for new materials production. The 3 million kcal boiler output ensures sufficient heating capacity, while the system’s high thermal efficiency significantly reduces energy consumption.

The boiler utilizes a horizontal coil structure, a low-NOx burner, and a waste heat recovery device, achieving stable operation and low emissions. The boiler’s automated control system enables Yuechun’s operators to easily manage the boiler, reducing manual labor and ensuring safe and reliable operation. Furthermore, the boiler series utilizes advanced combustion technology and an automatic control system, improving energy efficiency and achieving low emissions. This ensures compliance with current environmental protection policies and provides solid support for Yuechun Technology’s sustainable development strategy.

Since its commissioning, the YY(Q)W boiler has consistently provided stable, high-temperature heating to the customer, helping the company thrive in the competitive new materials sector. This project not only demonstrates ZOZEN Boiler’s technological strength but also its ability to provide customized solutions tailored to industry needs.

Advantages of ZOZEN Thermal Oil Boiler Systems

The thermal oil boiler system has become an indispensable energy solution for industries requiring precise, safe, and efficient high-temperature heating. By operating at low pressure while delivering high outlet temperatures, it provides unique advantages over traditional steam systems.

ZOZEN offers comprehensive after-sales services, covering everything from installation guidance and commissioning to operator training, spare parts support, and long-term maintenance. This lifecycle service ensures that clients can rely on their boiler systems for consistent, trouble-free performance.

For enterprises in chemicals, new materials, plastics, and beyond, choosing a ZOZEN thermal oil boiler system means gaining not just reliable heating equipment, but also a trusted partner dedicated to their long-term success. With proven expertise, international certifications, and a strong service network, ZOZEN continues to provide energy solutions that empower industries worldwide.