Catalytic combustion furnace (CO furnace)

Catalytic combustion furnace (CO furnace)Hebei Zhonghe Environmental Protection Drawing Design is clear and concise, with detailed principle introductions. For corporate clients who are interested in learning more, please refer to the following informationCatalytic combustion furnace (CO furnace)Product details:

【CO catalytic combustion furnace、Catalytic combustion CO furnaceProduct Composition
Composition of catalytic combustion system:
It mainly consists of a catalytic combustion bed (consisting of an electric heating chamber, a catalytic chamber, and a heat exchanger), a flame arrester, a temperature detector, corresponding pneumatic valves, and insulation pipelines. Its main function is to use an electric heater in the catalytic combustion bed to heat the waste gas produced, so that the organic waste gas is converted into CO2 and H2O between 250-300 ° C under the action of the catalyst, and a large amount of heat is released. The heat is recovered and reused through heat exchange, and the energy-saving effect is significant;

Composition of control system:
It mainly consists of PLC control cabinet, temperature display instrument, pneumatic valve actuator, and LCD flat panel simulation flow chart. Its function is to control the opening and closing of pipeline related valves during the working process, control the start and stop of the electric heater according to the requirements of the process conditions, control and indicate the heating temperature of the catalytic bed, reaction temperature, and the temperature of the inlet and outlet of the airflow. It also has alarm and automatic shutdown functions for abnormal situations during equipment operation. The equipment is equipped with fan overload protection, temperature protection, and fire interlock protection inside. A fire valve is installed at the equipment inlet. When high temperature occurs, the fire valve closes and the direct discharge valve automatically opens, and signals are exchanged with the main control system to achieve interactive links.

【CO catalytic combustion furnaceUnderstanding the working principle of catalytic combustion CO furnace
1. After the internal heating element generates heat energy, hot air is blown into the activated carbon bed through a fan and connecting pipes to raise the temperature of the activated carbon bed; 2. After adsorption, the activated carbon vaporizes and decomposes organic matter from the activated carbon. Under the negative pressure guidance of the fan, the organic matter enters the catalytic combustion bed through the desorption pipeline and heats up again, and undergoes chemical reactions with the precious metal catalyst filled inside the catalytic combustion bed. The organic matter undergoes secondary decomposition and purification. 3. When the temperature of the catalytic bed reaches 250-300 ° C, organic matter can begin to react, and the hot air generated by the combustion of exhaust gas is circulated for use. When the heat generated after the reaction reaches a certain value, the heating element can stop working (i.e., it operates in a low-power state). 4. After the desorption of activated carbon, the air volume is small and the high concentration organic waste gas enters the heat exchanger for heat exchange, achieving the recovery of waste heat. After the heat exchanger, the waste gas is further heated by a heater (using multiple sets of electric heating tubes for heating), and the heated organic waste gas reaches the ignition temperature under the action of the waste gas re catalyst. The exhaust gas enters the catalytic combustion bed, and under the action of the catalyst, it undergoes high-temperature cracking into CO2 and H2O, purifying the organic components. At the same time, the cracking of organic exhaust gas releases heat, further raising the gas temperature. The purified exhaust gas is then subjected to two-stage heat exchangers for the recovery and utilization of waste heat. 5. The preheating exhaust gas heating of catalytic combustion adopts a pollution-free and stable heating method. The electric heating tubes are divided into multiple groups and automatically controlled by the electric control box. PLC and system temperature interlock control are used. When the exhaust gas temperature is lower than the temperature (adjustable), the electric heating tubes will automatically turn on the power to heat the exhaust gas. When the exhaust gas temperature is higher than the temperature (adjustable), the electric heating tubes will automatically disconnect one, two, multiple or all power sources to save electricity and achieve operation. When the concentration of exhaust gas in the desorbed gas reaches around 4000/m3, it can basically achieve self balance of heat without the need to turn on electric heating, achieving the goal of energy conservation. Catalytic combustion reaction is a typical gas-solid phase catalytic reaction, which essentially involves the catalytic oxidation reaction between organic compounds (VOCs) adsorbed on the surface of the catalyst and oxygen from the air at temperature, decomposing into harmless CO2 and H2O, and releasing reaction heat. By using catalysts, the ignition temperature of organic matter can be significantly reduced, allowing for flameless combustion and reducing preheating energy consumption and NOx generation. 6. Activated carbon desorption process: When the adsorption bed is saturated, the desorption fan can be started to desorb the adsorption bed. The desorbed gas first passes through the heat exchanger in the catalytic bed, and then goes to the preheater in the catalytic bed. Under the action of the heating element, the gas temperature is increased to about 280 ° C. After passing through the catalyst, the organic matter is burned under the action of the catalyst and decomposed into CO2 and H2O, while releasing a large amount of heat. The gas temperature further increases, and the high-temperature gas passes through the heat exchanger again to exchange heat with the incoming cold air, recovering a part of the heat. The gas coming out of the heat exchanger is divided into two parts: one part is directly discharged; The other part enters the adsorption bed activated carbon for desorption. When the desorption temperature is too high, the supplementary cooling fan can be started for supplementary cooling to stabilize the desorption gas temperature within a suitable range. When the temperature inside the activated carbon adsorption bed exceeds the alarm value, the fire protection system will automatically open and fill 97% nitrogen into the activated carbon adsorption bed to cool down and prevent the activated carbon from catching fire.

The application fields of CO catalytic combustion furnace and catalytic combustion CO furnace have long been known
1. Petroleum and chemical industries (such as plastics, rubber, synthetic fibers, organic chemicals)
2. Exhaust gas treatment in the automotive and electronics industries;
3. Pharmaceutical factory waste gas treatment;
4. Organic waste gas from spraying, glass manufacturing industry, baking paint drying production lines, etc