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Today, with increasingly strict environmental protection requirements, choosing an efficient and reliable VOCs treatment technology is of vital importance. At present, adsorption concentration + catalytic combustion (CO), adsorption concentration + regenerative thermal oxidation (RTO), and zeolite rotor concentration +RTO are the three most widely applied mainstream technologies.
Activated carbon adsorption + catalytic combustion (CO) device
Technical principle: Activated carbon is used to adsorb low-concentration waste gas at room temperature. Once the adsorption reaches saturation, hot air is used to "blow off" the organic matter from the activated carbon, forming high-concentration waste gas. Then, it enters the catalytic combustion chamber and undergoes flameless combustion at a relatively low temperature (300-350℃) for complete decomposition.
Advantages and features: High purification efficiency (> 95%), low operating cost, suitable for treating low-concentration and high-volume waste gas.
Applicable scenarios: Printing, plastic, chemical and other working conditions with intermittent or large concentration fluctuations.
2. Rotary RTO (Regenerative Thermal Oxidizer)
Technical principle: Heat the organic waste gas to over 760℃ to oxidize and decompose it into CO₂ and H₂O. During the process, its unique rotary heat storage body continuously circulates, preheating the low-temperature waste gas entering with the high-temperature gas after the decomposition of the waste gas, and the heat energy recovery efficiency can reach over 95% at the highest.
Advantages and features: Extremely high processing efficiency (> 99%), remarkable energy-saving effect, stable operation, suitable for continuous production.
Applicable scenarios: Continuous emission of medium to high concentration waste gas in automotive painting, chemical, pharmaceutical and other industries.
3. Zeolite rotor concentration + rotary RTO
Technical principle: This is a perfect combination of "adsorption concentration" and "high-temperature oxidation". Firstly, large volumes of low-concentration waste gas pass through the zeolite rotor, where VOCs are adsorbed and dehydrated. Subsequently, a small volume of hot air desorbs the VOCs on the zeolite rotor, forming a small volume of high-concentration waste gas. Finally, this part of the high-concentration waste gas enters the rotary RTO for efficient oxidation treatment.
Advantages and features: It combines large air volume processing capacity with high energy efficiency, and is currently the top technical solution for handling extremely large air volumes and low-concentration waste gas.
Applicable scenarios: Large-scale painting workshops, lithium battery production, packaging and printing, and other industries with extremely large volumes and low concentrations of waste gas.
How to choose?
Zhonghuan Oasis suggests that you conduct a comprehensive assessment from multiple dimensions such as exhaust gas concentration, air volume, exhaust temperature, budget and operating costs. Our team of engineers can offer you free diagnosis and solution design to help you precisely match and solve VOCs problems in one stop.
