Organic Waste Gas Adsorption and Desorption (RCO) Catalytic Purification Units are a series of new, energy-efficient, 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 that they reach the leading level among similar domestic products. Activated carbon, a porous non-polar material, exhibits excellent adsorption properties for volatile organic compounds. Activated carbon beds, which use activated carbon as an 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 effective purification. The Activated Carbon Adsorption + Catalytic Oxidation Technology (RCO) Desorption and Regeneration Technology is an integrated organic waste gas purification system developed on the basis of a single activated carbon adsorption bed, incorporating activated carbon regeneration units, thermal oxidation of organic waste gases, thermal energy recovery, multi-channel safety detection, and automatic control. Designed based on the two basic principles of adsorption (high efficiency) and catalytic combustion (energy-saving), the system operates with dual gas circuits continuously, featuring one catalytic combustion chamber and two or more adsorption beds used alternately. First, organic waste gases are adsorbed by activated carbon; adsorption is stopped when nearing saturation, followed by using a hot gas stream to desorb the organic compounds from the activated carbon, thereby regenerating the activated carbon. The desorbed organic compounds are concentrated (increased concentration by dozens of times) and then sent to the catalytic combustion chamber for catalytic combustion into carbon dioxide and water vapor. When the concentration of organic waste gases reaches 2000PPm or above, self-combustion can be maintained 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 provides the necessary thermal energy 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 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 reduce 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 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 chances 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 chimney for discharging purified flue gas. 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 flue gas releases some heat through the heat exchanger and is then discharged into the atmosphere through the chimney.
