Organic废气Absorption/Desorption (RCO) Catalytic Purification Units are a new series of high-efficiency, energy-saving, and non-secondary pollution products developed based on our company's many years of experience in waste gas treatment. After being used by dozens of customers, it has been confirmed to reach the leading level among similar domestic products. Activated carbon, a porous non-polar material, possesses excellent adsorption properties for volatile organic compounds. Activated carbon beds, utilizing activated carbon as the adsorption material, are widely used in the treatment of industrial organic waste gases and malodorous gases, offering advantages such as low initial investment, simple equipment structure, and excellent purification effects. The Activated Carbon Adsorption + Catalytic Oxidation Technology (RCO) Desorption Regeneration Technology is an integrated organic waste gas purification treatment system developed on the basis of a single activated carbon adsorption bed, which includes activated carbon regeneration units, organic waste gas thermal oxidation and thermal energy reuse, multi-channel safety detection, and automatic control. Designed according to the two basic principles of adsorption (high efficiency) and catalytic combustion (energy-saving), it employs dual gas circuit continuous operation with one catalytic combustion chamber and two or more adsorption beds alternating use. Initially, organic waste gases are adsorbed by activated carbon; when nearing saturation, the adsorption stops, and then hot gas is used to desorb the organic matter from the activated carbon, thereby regenerating the activated carbon. The desorbed organic matter is concentrated (increased by several tens of times in concentration) and sent to the catalytic combustion chamber for catalytic combustion into carbon dioxide and water vapor. When the concentration of organic waste gas reaches 2000PPm or above, the organic waste gas can self-combust in the catalytic bed without external heating. After combustion, a portion of the exhaust gas is released into the atmosphere, while the majority is sent to the adsorption bed for activated carbon regeneration. This process satisfies the thermal energy required for combustion and adsorption, achieving energy-saving objectives. The regenerated activated carbon can enter the next adsorption cycle; during desorption, the purification operation can be conducted using another adsorption bed, which is suitable for both continuous and intermittent operations.
Operating Principle:
During the chemical reaction process, a method called catalytic combustion is used to lower the combustion temperature by employing a catalyst, thereby accelerating the complete oxidation of toxic and harmful gases. The carrier of the catalyst is made from porous materials, which have a large specific surface area and suitable pore size. When organic gases heated to 300~450℃ pass through the catalytic layer, oxygen and organic gases are adsorbed onto the catalyst on the surface of the porous material, increasing the chances of contact and collision between oxygen and organic gases. This enhances the activity, causing a vigorous chemical reaction between the organic gases and oxygen to produce CO2 and H2O, while also generating heat. This process converts the organic gases into non-toxic and harmless gases.
The catalytic combustion unit is primarily composed of a heat exchanger, combustion chamber, catalytic reactor, heat recovery system, and a flue gas emission chimney for purification. Its purification principle is as follows: The unfiltered gas is preheated by passing through the heat exchanger before entering the combustion chamber, where it reaches the required reaction temperature. The oxidation reaction takes place in the catalytic reactor, and the purified flue gas releases some heat through the heat exchanger before being discharged into the atmosphere through the chimney.
