The Regenerative Thermal Oxidizer system was specifically designed by Ruiding for Huizhou Yuxin New Materials Co., Ltd. Huizhou Yuxin New Materials Co., Ltd. possesses the world's largest single-set production capacity for maleic anhydride facilities.

This Regenerative Thermal Oxidizer system is capable of processing 150,000 tons of maleic anhydride off-gas and a small amount of waste liquid annually. Ruiding innovatively employs either a standalone Regenerative Thermal Oxidizer (RTO) process or a standalone Thermal Oxidizer (TO) process for off-gas treatment. This marks the world's first adoption of a new process combining "RTO + TO + Waste Heat Recovery System", achieving the largest processing air volume of 480,000 standard cubic meters per single unit and treating 2.5 tons per hour of waste liquid. Additionally, the waste heat recovery system captures residual heat, converting it into saturated steam at a rate of 200 tons per hour, with parameters of 9.45 MPaG and 535°C. This saturated steam is then used to supply heat to the desalination water system.

The system occupies an area of 35*59 meters and includes components such as a mist separator, thermal filter, RTO, spray scrubbing tower, electrostatic precipitator, TO, high-pressure steam superheater, SCR reactor, waste gas preheater, desalination flue gas heat exchanger, chimney, startup fan, reverse draw fan, and combustion system. The combined RTO plus TO unit ensures that the flue gas emissions meet environmental standards.

The project achieved mechanical completion on September 30,2021, and concluded hot state debugging, including furnace drying, on November 10,2021. It officially commenced production and operation in early December 2021.