First, VOCs (Volatile Organic Compounds) are preheated in a heat accumulator, then enter the combustion chamber where they are heated to approximately 800°C.
Working Mechanism of Regenerative Thermal Oxidizer (RTO) for Printing Industry
First, VOCs (Volatile Organic Compounds) are preheated in a heat accumulator, then enter the combustion chamber where they are heated to approximately 800°C. At this temperature, VOCs are oxidized and decomposed into CO₂ (carbon dioxide) and H₂O (water). The high-temperature flue gas generated after oxidation then passes through another heat accumulator to release heat, before being discharged from the RTO system. During the operation of a three-chamber RTO, each individual heat accumulator switches repeatedly between three states: air intake, purging, and exhaust.
After one cycle, VOCs always enter the heat accumulator that discharged purified gas in the previous cycle. Meanwhile, the heat accumulator that originally received VOCs is purged with purified gas or air. Any residual unreacted VOCs are sent back to the combustion chamber for oxidation, and then discharged together with the purified gas from the purged heat accumulator.
This process circulates and alternates continuously, effectively reducing heat emissions after waste gas treatment. At the same time, it saves heat loss during the oxidation and heating of waste gas, allowing the waste gas to maintain high thermal efficiency (approximately 95%) during the high-temperature oxidation process. The equipment is stable and reliable, with simple operation, convenient maintenance, low operating costs, and a VOCs purification efficiency of up to 99%.
Advantages of Regenerative Thermal Oxidizer (RTO) for Printing Industry
For high-concentration waste gas treatment, it achieves self-heating combustion, featuring low operating costs and reasonable cost-effectiveness.
High purification efficiency: the three-chamber RTO can reach a purification efficiency of 99.5%.
Ceramic heat accumulators are used for heat energy recovery, with alternating operation of preheating and heat storage, and a thermal efficiency of ≥ 95%.
The furnace body has a solid steel structure and a thick thermal insulation layer, ensuring stable and robust operation with high reliability.
Equipped with PLC (Programmable Logic Controller) automated control, achieving a high level of automation.
Waste heat utilization for high economic benefits: excess heat energy is reused in drying rooms, ovens, etc., eliminating the need for additional fuel or electricity consumption for heating the drying rooms.
