Organic Waste Gas Absorption and Desorption (RCO) Catalytic Purification Units are a new series of high-efficiency, energy-saving, and non-polluting products developed by our company based on 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, exhibits excellent adsorption properties for volatile organic compounds. The activated carbon beds, made using 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 and Regeneration Technology is an integrated organic waste gas purification system developed based on a single activated carbon adsorption bed, incorporating activated carbon regeneration units, organic waste gas thermal oxidation and heat recovery, multi-channel 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 continuous working system with one catalytic combustion chamber and two or more adsorption beds used alternately. Initially, the organic waste gas is adsorbed by the activated carbon, and adsorption is stopped when nearing saturation. Then, the organic matter is desorbed from the activated carbon using a hot gas flow, thereby regenerating the activated carbon. The desorbed organic matter, which has been concentrated (increased several dozen times in concentration), is then 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, the exhaust gas is partially released into the atmosphere and most is sent to the adsorption bed for activated carbon regeneration, which satisfies the heat energy needs for both combustion and adsorption, achieving energy-saving goals. The regenerated activated carbon can then be used for the next吸附 cycle; during desorption, the purification operation can be carried out 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 employed to reduce the combustion temperature and accelerate the complete oxidation of toxic and harmful gases using a catalyst. The carrier of the catalyst, made of porous materials, has a large specific surface area and appropriate pore size. When organic gases heated to 300~450°C pass through the catalytic layer, oxygen and organic gases are adsorbed on the catalyst surface of the porous material, increasing the opportunities for contact and collision between oxygen and organic gases, enhancing activity, and 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 mainly 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: Unpurified gases are preheated by the heat exchanger before entering the combustion chamber, then sent to the combustion chamber where they reach the required reaction temperature. Oxidation reactions take 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.