In industrial production, where heat energy plays a crucial role in supporting continuous processes, the vertical thermal oil boiler has become an increasingly preferred choice. Compared with traditional steam heating equipment, it delivers high-temperature thermal energy at low system pressure, ensuring both efficiency and safety. The vertical configuration allows the boiler to occupy minimal floor area while maintaining large heat exchange surfaces, which makes it suitable for facilities with compact layouts or multi-level production lines.

A vertical thermal oil boiler operates by circulating heat transfer oil through a closed system. This design enables the boiler to reach outlet temperatures as high as 320 °C without the need for high pressure, creating stable and controllable heat conditions for drying, heating, or reaction processes. Industries such as fine chemicals, food processing, pharmaceuticals, coatings, and textiles rely heavily on such systems, where stable and uniform temperature control directly affects product quality and production efficiency.

In the global market of industrial heat supply, ZOZEN Boiler has established itself as one of the trusted manufacturers in China, offering a comprehensive range of thermal oil heaters that combine efficient design, advanced technology, and reliable safety performance. Among these, the YQL series vertical thermal oil boiler has earned particular attention for its ability to integrate compact structure, high efficiency, and low emissions into one stable heating solution.

Technical Features and Advantages of ZOZEN YQL Vertical Thermal Oil Boiler

The YQL vertical thermal oil boiler from ZOZEN Boiler is designed around the principle of maximizing energy conversion while minimizing operational and maintenance demands. The product uses a three-pass round coil structure in which flue gases flow through multiple paths, fully exchanging heat with the coil tubes at every stage. The result is a balanced and thorough heat transfer process that ensures uniform temperature distribution throughout the system.

The boiler’s vertical arrangement reduces its footprint significantly compared with traditional horizontal models, which makes installation easier in space-limited factories. It also simplifies piping layout, allowing shorter oil circulation routes and therefore lower heat loss during operation. The heating surface adopts a closely arranged coil configuration to increase radiant and convective heat transfer, while the inner surface of the furnace wall is effectively protected by the shield of the coil, enhancing its durability under long-term high-temperature conditions.

ZOZEN 8 million kcal YQL thermal oil herter

The YQL vertical thermal oil boiler provides a wide range of thermal capacities, typically from 7000kw to nearly 29200kw, depending on customer requirements. The system operates under low pressure, generally around 0.8 to 1.0 MPa, while delivering outlet oil temperatures of up to 320 °C. The unit is compatible with multiple clean fuels, including natural gas, light oil, and other gaseous fuels, making it adaptable for both domestic and overseas users with varying fuel conditions.The use of advanced low-NOx combustion technology also ensures that the boiler maintains environmental compliance, with nitrogen oxide emissions typically controlled below 30 mg/Nm³.

From the control perspective, ZOZEN integrates an intelligent PLC control system into the YQL series. Through real-time temperature and flow monitoring, the system automatically adjusts the burner operation, circulation pump, and safety valves, ensuring steady operation with minimal manual intervention. This contributes to the stability and reliability of the entire heating process, particularly in industries requiring continuous and precise temperature regulation.

Overall, the YQL vertical thermal oil boiler demonstrates a well-balanced design that combines thermal efficiency, operational stability, and environmental performance. Its compact structure, efficient heat exchange system, and advanced control features make it an effective energy solution for a broad range of industrial users.

Application of ZOZEN YQL Vertical Thermal Oil Boiler in the Fine Chemical Industry

A well-known fine chemical enterprise recently cooperated with ZOZEN Boiler to upgrade its energy system. The company specializes in producing high-value chemical intermediates and functional materials, processes that require large quantities of stable heat at controlled temperatures. During operations such as extraction, concentration, and drying, fluctuations in heat supply can directly influence product yield and quality consistency.

Considering the company’s requirements for stable thermal energy, energy efficiency, and strict emission control, ZOZEN recommended its YQL vertical thermal oil boiler. The supplied unit, with a capacity of eight million kilocalories per hour, was designed to provide a steady heat supply across several production lines. The boiler’s vertical configuration matched the plant’s compact layout, minimizing the need for building modification.

The YQL boiler’s three-pass coil structure and advanced combustion system allow full utilization of the heat released during fuel combustion. In this case, the combination of a low-NOx burner and optimized air distribution achieved excellent combustion efficiency and reduced pollutant emissions. The boiler body was equipped with a high-quality insulation layer to prevent heat loss, while the automated control system maintained outlet oil temperature with minimal deviation, even under variable load conditions.

Currently, the boiler installation has been completed, and the system is in the commissioning phase awaiting gas supply. Once operational, the vertical thermal oil boiler will provide reliable heat for multiple process sections, ensuring consistent product quality while supporting the company’s commitment to low-carbon and digital transformation. The project reflects how ZOZEN’s engineering expertise can align with clients’ goals of efficiency, safety, and sustainability, offering a practical energy solution for the modern chemical industry.

Reliable Engineering and Comprehensive Service from ZOZEN Boiler

The development of industrial heat systems is moving toward cleaner, more efficient, and smarter technologies, and the vertical thermal oil boiler represents a significant step in that direction. It provides an effective means of delivering high-temperature heat in a safe, low-pressure environment while maintaining flexibility and efficiency.

ZOZEN Boiler has accumulated decades of experience in thermal energy equipment manufacturing and has continuously refined its technology through cooperation with both domestic and international enterprises. The YQL series not only embodies the company’s understanding of industrial process requirements but also showcases its commitment to environmental responsibility and sustainable development.

Beyond the product itself, ZOZEN provides complete technical support and after-sales service, including system design consultation, on-site installation guidance, and regular performance tracking. For global users seeking an efficient, durable, and environmentally compliant solution, ZOZEN’s vertical thermal oil boiler stands as a strong choice that combines advanced engineering with dependable service.