Operation Process of RTO Catalytic Combustion Equipment
The catalytic combustion device for organic waste gas is primarily used for the purification of harmful organic waste gases and odor control in paint coating, printing, electrical machinery and electronics, household appliances, shoe manufacturing, plastics, and various chemical industrial workshops. It is suitable for organic waste gases with low concentrations that are not suitable for direct combustion, catalytic combustion, or adsorption recovery treatment, especially for high-volume treatment scenarios, where it can achieve satisfactory economic and social benefits. The catalytic combustion technology for organic waste gas refers to the rapid oxidation of hydrocarbons in organic waste gases into water and carbon dioxide under lower temperatures due to the action of a catalyst, achieving the goal of treatment. The catalytic combustion method for treating industrial organic waste emerged as a technology at the end of the 1940s. Since the development of the first catalytic combustion device for organic waste gas in 1949, this technology has been widely applied in industries such as paint, rubber processing, plastic processing, resin processing, leather processing, the food industry, and foundry, as well as in automotive exhaust purification. China began using catalytic combustion treatment for the control of organic waste gases emitted from varnished wire drying furnaces in 1973. Subsequently, research was conducted in areas such as insulating materials and the printing industry, leading to the widespread application of catalytic combustion equipment.
The RTO catalytic combustion equipment operates through three stages: adsorption, desorption, and catalytic combustion. The desorption value of activated carbon needs to be set based on specific values such as the workload, working hours, and exhaust gas concentration in various industries. Once the adsorption of activated carbon reaches its saturation point, the catalytic combustion system automatically initiates desorption. During the desorption process of the activated carbon catalytic combustion equipment, air first passes through the desorption fan into the catalytic combustion chamber, where it is heated by the chamber's heater. When the temperature reaches 200°C, the air enters the desorption pipeline through a heat exchanger, where it is cooled in a mixing box within the pipeline. Once the mixing box temperature reaches the desorption temperature of activated carbon, it is directed through a valve into the activated carbon adsorption vessel for desorption. The exhaust gas then enters the desorption channel, followed by the catalytic combustion chamber to react with the catalyst. This reaction produces high-temperature gases, typically ranging from 260-380°C. As the temperature reaches 300°C, one set of heating pipes is turned off, and at 350°C, the second set is turned off. When the temperature reaches 380°C, all three sets of heating pipes are turned off. After the electric heating is fully turned off, power is saved. Ceramic heat storage units are placed around the catalyst to retain heat, allowing the catalyst to undergo reaction without heating for extended periods. When the temperature drops below 300°C, electric heating automatically starts up again. This process requires no human control, saving labor and energy.
