Catalytic combustion equipment process flow
1. Heat the exhaust gas to above 760℃ with a residence time of more than 1 second, so that the VOCs in the exhaust gas are oxidized and decomposed into carbon dioxide and water.
2. The high-temperature gas generated by oxidation flows through a special ceramic heat storage body, causing the ceramic body to heat up and “storage heat”. This “heat storage” is used to preheat the waste gas that subsequently enters the furnace body, thereby saving fuel consumption for heating the waste gas and reducing operating costs.
3. The ceramic heat storage body should be divided into three zones. Each heat storage chamber should undergo a cycle of heat storage, heat release, and cleaning, repeating continuously. After the heat storage chamber “releases heat,” an appropriate amount of clean air should be immediately introduced to clean the chamber (with a high VOC removal rate). Only after the cleaning is completed can the “heat storage” process begin.
4. Cold start preheating increases the furnace temperature through the burner system. During normal operation, most of the heat can be recovered by the heat storage ceramic bed. When the concentration of combustible components in the exhaust gas is
When the furnace temperature is too low, the furnace temperature is raised by burning auxiliary fuel (diesel or gas). When the furnace temperature is too high, a high-temperature exhaust valve controlled by the furnace temperature can release some of the heat.
Application areas of catalytic combustion equipment
The system is suitable for painting, coating, coating, chemical, petrochemical and other industries.
It is suitable for the treatment of various organic pollutants, especially viscous organic pollutants and pollutants that cause catalyst poisoning in catalytic combustion.
When the catalytic combustion equipment is working, it needs to go through three stages: adsorption, desorption, and catalytic combustion. The desorption value of activated carbon needs to be set according to the specific values of workload, working hours, exhaust gas concentration, etc. in each industry. When the adsorption of activated carbon reaches the saturation value, the catalytic combustion system will automatically desorb. When the activated carbon catalytic combustion equipment is desorbing, the air first enters the catalytic combustion chamber through the desorption fan, and is heated by the heater in the catalytic combustion chamber. However, when the temperature reaches 200 degrees Celsius, it enters the desorption pipe through the heat exchanger and is cooled in the mixed flow box in the desorption pipe. When the temperature in the mixed flow box reaches the desorption temperature of the activated carbon, it enters the activated carbon adsorption box through the valve to desorb the Longtai activated carbon. Exhaust gas passes through the valve above and enters the desorption channel, then into the catalytic combustion chamber, where it reacts with the catalyst. This reaction generates high-temperature gases, typically between 260 and 380 degrees Celsius. When the temperature reaches 300 degrees Celsius, one set of heating tubes shuts off. At 350 degrees Celsius, two sets of heating tubes shut off. At 380 degrees Celsius, all three sets of heating tubes shut off. Disabling all electric heating conserves energy. Ceramic heat storage elements surround the catalyst to lock in heat, allowing the catalyst to react without heating for extended periods. When the temperature drops below 300 degrees Celsius, the electric heating automatically restarts, eliminating the need for human control. This saves both manpower and energy.
