Can RTO equipment be used for the treatment of trichloromethane?
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Can RTO equipment be used for the treatment of trichloromethane? The components of the exhaust gases emitted from the workshop are as follows: Main components of the exhaust gases, self-measured VOCs, self-measured wind speed in m/s, inner diameter of the exhaust pipe, wind speed measured using a pyrometer in m/s, actual air volume in m3/h, rounded actual air volume in m3/h, measured concentration in mg/m3, dilution factor, concentration after dilution, air volume in m3/h. For chloromethane, the value is out of range: 0.8, DN80, 80, 3.00, 54.2592, 55, 217000, 55, 3945.45455, 3025. The measured concentration is quite high; what is usually done to deal with this? What preprocessing is done after exhaust gas is released from the workshop? Thank you!
When treating chlorinated hydrocarbon waste gases by incineration, it is required that the temperature inside the incinerator furnace be ≥1100°C and the residence time of the flue gas be ≥2 seconds; otherwise, incomplete combustion can lead to the formation of dioxins. Relevant requirements are specified in the \"Standards for Pollution Control of Hazardous Waste Incineration\" (GB 18484-2001). Therefore, RTO does not apply. In addition, exhaust gases containing chlorinated hydrocarbons and the like must undergo cooling, absorption, and alkaline washing after combustion; only after hydrogen chloride and trace amounts of chlorine generated by combustion are recovered or removed can the flue gas be discharged in compliance with standards. The system is relatively complex, and it is not a suitable treatment method for situations with low exhaust airflow. For an exhaust gas treatment capacity of 55 m3/h, dilution should not be used; it is recommended to employ a method involving adsorption, desorption, and subsequent condensation for recovery.
I was involved in a project before where chlorine-containing waste gases were indeed not suitable for treatment using RTOs; not only is the entire process complex, but it also has a significant impact on the equipment, requires high-quality materials, and leads to higher costs. If it is a single gas, condensation at such a high concentration is quite good. It’s relatively better than burning.