The rotary regenerative thermal oxidation furnace is an organic waste gas treatment equipment. When the organic waste gas enters the incinerator, it is heated to above 760 ℃ by auxiliary fuel and burned to decompose into stable CO2 and H2O, thereby achieving organic waste gas treatment. The decomposition efficiency of waste gas can reach over 90%. During this process, the waste heat is recovered and utilized by ceramic thermal storage bodies, greatly reducing operating costs. When the concentration of organic waste gas is high, there is no need for auxiliary combustion for heating. The heat generated by the combustion of organic waste gas can maintain the temperature of the combustion chamber and achieve secondary recovery and utilization of waste heat. The heat recovery efficiency can reach over 90%, reducing operating costs.
Three room RTO job responsibilities:
① Untreated organic chemical waste gas enters the porcelain heat storage body of the No. 2 heat storage chamber (which stores the heat generated by the previous circulation system). The porcelain heat storage body releases heat to reduce temperature, while the organic chemical waste gas absorbs heat to increase temperature. After leaving the heat storage chamber, the waste gas enters the oxidation chamber at a higher temperature. At this time, the temperature of the waste gas depends on the volume of the porcelain body, the water flow rate of the waste gas, and the geometric structure of the porcelain body. Organic chemical waste gas is heated by a combustion engine in the oxidation chamber to the set oxidation temperature, converting the VOCs components into carbon dioxide and water. Because the exhaust gas has been heated in the heat storage room, the consumption of natural materials has been significantly reduced. The oxidation chamber has two functions: one is to confirm that the exhaust gas can achieve the set oxidation temperature; The second is to confirm that there is sufficient waiting time for VOCs in the exhaust gas to oxidize sufficiently.
② The exhaust gas is incinerated and treated in the oxidation chamber, turning into a clean high-temperature vapor before leaving the oxidation chamber and entering the No. 2 heat storage chamber (which has been cooled in the previous circulation system). After the exothermic reaction and temperature reduction, it is discharged, while the No. 2 heat storage chamber digests and absorbs a lot of heat and heats it up (using the following circulation system to heat the exhaust gas). The cleaned exhaust gas is discharged into the air through the chimney, and a small amount of clean air is introduced to clean the No. 3 heat storage chamber. The exhaust pipe temperature is about 50 ℃ higher than the intake temperature.
③ After the circulation system is completed, the inlet and outlet valves undergo a conversion before entering the next circulation system. The exhaust gas enters from the 2nd heat storage chamber and is discharged from the 3rd heat storage chamber. After the conversion, clean the No. 2 heat storage chamber. This kind of replacement.
The rotary regenerative thermal oxidation furnace can be used for small to moderate levels of total exhaust gas flow. If the total flow rate of the exhaust gas to be solved is very large, there is no problem with using three chambers. The conversion gate valve still needs to be made very large, and the large gate valve cannot be made well; Secondly, when the capacity of the heat storage chamber is large, it cannot be confirmed that the distribution of the cyclone is uniform, which endangers the actual effect of heat conduction. Therefore, when the total flow rate of exhaust gas is very large (generally exceeding 60000M3/h), it should be connected to a five chamber RTO equipment, that is, two two chambers in series plus one chamber for cleaning. In order to achieve a more uniform temperature in the combustion chamber of the engine, two or more combustion engines can be set in the combustion chamber of the engine connected to the high-quality one. Similarly, when the output is high, seven chambers, two three chambers in series, and one cleaning chamber can be used; To integrate the load transition, two sets of ignition system software can be set for the seven chamber connected Youpin, each with three combustion engines (1, 3, 5 as a group and 2, 4, 6 as a group).
Capable of treating exhaust gas:
Hydrocarbons, benzene derivatives, alcohols, ketones, phenols, aldehydes, esters, amines, nitriles (cyanides), etc.
Low concentration of organic matter (while meeting the requirement of less than 25% LFL), high air volume
The exhaust gas contains multiple organic components or changes in organic components
Waste gas containing components that are prone to catalyst poisoning or activity degradation
The rotary regenerative thermal oxidation furnace is mainly composed of a combustion chamber, a ceramic packing bed, and a rotary valve. The furnace body is divided into 12 chambers, including 5 inlet chambers, 5 outlet chambers, 1 cleaning chamber, and 1 isolation chamber. The exhaust gas distribution valve is driven by a motor to rotate continuously and uniformly. Under the action of the distribution valve, the exhaust gas slowly switches continuously between 12 chambers.