Organic Waste Gas Adsorption and 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 years of experience in waste gas treatment. After being used by dozens of customers, it has been confirmed that it can 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 adsorption material, are widely used in the treatment of industrial organic waste gases and malodorous gases, offering advantages such as low initial investment cost, simple equipment structure, and good purification effects. The Activated Carbon Adsorption + Catalytic Oxidation Technology (RCO) Desorption Regeneration Technology is a system developed based on a single activated carbon adsorption bed, incorporating activated carbon regeneration units, organic waste gas thermal oxidation, thermal energy reuse, multi-route safety detection, and automatic control into an integrated organic waste gas purification treatment system. 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, featuring one catalytic combustion chamber and two or more adsorption beds alternating use. The organic waste gas is first adsorbed using activated carbon; when it is nearly saturated, adsorption is stopped, and then the organic matter is desorbed from the activated carbon using a hot gas flow to regenerate the activated carbon; the desorbed organic matter is concentrated (increased by several tens of times in concentration) and sent to the catalytic combustion chamber to be catalytically combusted into carbon dioxide and water vapor for exhaust. When the concentration of organic waste gas reaches 2000PPm or above, the organic waste gas can self-combust in the catalytic bed without external heat. 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 approach meets the thermal energy requirements for both combustion and adsorption, achieving energy-saving objectives. The regenerated activated carbon can then be used for the next吸附 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, the method of using a catalyst to reduce the combustion temperature and accelerate the complete oxidation of toxic and harmful gases is called catalytic combustion. 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°C 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. This 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 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 and is then discharged into the atmosphere through the chimney.
