This forced circulation vertical boiler uses biomass particles as fuel and thermal oil as the medium. A circulation oil pump enables liquid-phase circulation, transferring heat to equipment before returning for reheating. The three-return coil design provides sufficient heating surface and expansion absorption, enabling low-pressure, high-temperature heating. An economizer can be added for improved energy efficiency.

Provided by UIMC, the YGL achieves liquid-phase temperatures up to 340°C under low pressure, serving applications requiring uniform heating without direct flame in the 150–380°C range. It offers high heat utilization, excellent heat transfer, safe and reliable operation, comprehensive protection, and convenient maintenance—unparalleled advantages that have led to its widespread domestic use and export to many countries and regions worldwide.