Organic Waste Gas Adsorption and Desorption (RCO) Catalytic Purification Units are a series of new, 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, has excellent adsorption properties for volatile organic compounds. Activated carbon beds, made using activated carbon as the adsorbent material, are widely used in treating industrial organic waste gases and malodorous gases, offering advantages such as low initial investment, simple equipment structure, and good 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 heat recovery, multi-path safety detection, and automatic control. Designed according to the two basic principles of adsorption (high efficiency) and catalytic combustion (energy-saving), it uses a dual-gas circuit for continuous operation, with one catalytic combustion chamber and two or more adsorption beds alternating use. The organic waste gas is first adsorbed by activated carbon, and the adsorption is stopped when it is about to reach saturation. Then, a hot gas stream is used to desorb the organic matter from the activated carbon, regenerating the activated carbon; the desorbed organic matter is concentrated (increased 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 sustain self-combustion in the catalytic bed without external heat. After combustion, part of the exhaust gas is released into the atmosphere, while most is sent to the adsorption bed for activated carbon regeneration. This satisfies the heat energy required for combustion and adsorption, achieving energy-saving goals. The regenerated activated carbon can then 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.

Operation Principle:

In the chemical reaction process, a method called catalytic combustion is used to lower the combustion temperature by utilizing a catalyst to accelerate the complete oxidation of toxic and harmful gases. Due to the carrier of the catalyst being made of porous materials with 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 on the catalyst at the surface of the porous material, increasing the chance of contact and collision between oxygen and organic gases, enhancing the activity, and causing a vigorous chemical reaction between the organic gases and oxygen to produce CO2 and H2O, while also generating heat, thereby transforming 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 purification chimney. Its purification principle is as follows: The unfiltered gas is preheated by the heat exchanger before entering the combustion chamber, where it reaches the required reaction temperature. The oxidation reaction takes place in the catalytic reactor. After purification, the烟气 releases some heat through the heat exchanger before being discharged into the atmosphere through the chimney.