Regenerative Thermal Oxidizer (RTO):

Process flow chart:


Process description:

After the waste gas flows into the ceramic regenerator of regenerative chamber 1 (where the heat generated in last cycle is stored), the ceramic regenerator emits heat and cools down, but the VOCs are heated up.


The waste gas leaves the regenerator and enters the oxidation chamber at a higher temperature. In the oxidation chamber, the temperature rises to 820℃ due to the oxidation of VOCs or heating by the burners, so that the VOCs therein are decomposed into carbon dioxide and water.


The purified high-temperature gas leaves the oxidation chamber and flows into the regenerator 2 (which has been cooled in the previous cycle) to cool down, which then flows into the heat exchanger for heat recovery and is discharged into the atmosphere through the chimney. A small amount of purified gas is introduced into the regenerator 3. While the regenerator 2 is heated due to its absorption of much heat, and it is ready to heat the waste gas in the next cycle.


At the end of the cycle, the intake and outlet valves are switched once to start the next cycle. The waste gas flows into the regenerator 2, and flows out of the regenerator 3. After the intake and outlet valves are switched, the regenerator 1 is cleaned. The VOCs are removed continuously as the intake and outlet valves are switched in turn.

Technical features:

The equipment is compact, highly integrated and occupies small footprint;


The system is highly adaptive, flexible and stable, of which the 2 chambers, 3 chambers, 5 chambers or even 7 chambers or more chambers are available dependent on various conditions;


Automatically controlled with PLC and equipped with touch screen, it features outstanding human-machine interaction and energy saving;


With the imported high-performance ceramic Regenerative Thermal Oxidizer (RTO), it achieves high heat exchange efficiency up to 95% or more;


It requires low fuel consumption or even zero fuel consumption;


Equipped with the LEL interlocking cut-off system, the VOC concentration in the system is strictly controlled below 1/4 lower explosion limit;


Provided with the thermostat valve, when the combustion chamber temperature exceeds the set upper limit, the thermostat valve opens and vent the gas in system to ensure safe operation at set temperature;


Designed with the explosion vent, which is opened in case of abrupt pressure rise in the combustion chamber, it can effective relieve the pressure to prevent hazards;


Equipped with multiple safety protection systems, such as non-steady state control, high temperature alarm, shutdown alarm and emergency response measures, so the system is fail-proof.


Organic chemicals, pharmaceutics, coating, surface coating, oil, packaging and printing, and other industries involving organic solvents.

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