What temperature of chilled water is required to cool dichloromethane waste gas?
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After adsorption, dichloromethane is desorbed using steam; what temperature of chilled water is required to cool the dichloromethane in the desorption steam? In order to minimize the secondary volatilization of dichloromethane into the gas phase? Have you worked on similar projects?
Steam flow rate and allowable emission concentrations are required, which are modeled and calculated based on the partial pressure law and the relationship between saturated vapor pressure and temperature
Steam flow: 1 t/h; pressure: 0.05 MPA; temperature: 120°C; allowable emission concentration of dichloromethane: 50 mg/m3
I can only give some hints; I can’t calculate things for you once you provide the parameters – that’s not how work is done. There is a solution similar to recycling technology that you can take as a reference: http://jz.docin.com/p-1495553711.html
The lower the condensation temperature, the higher the recovery rate
It is necessary to specify the composition and emission standards; since the content of dichloromethane is low and strict emission requirements apply, the dew point temperature is very low, which in turn results in a low required temperature for the chilled water. In such cases, absorption-based treatment methods can also be considered. You can get a rough idea by simulating it.
When cooling dichloromethane using condensation at -60 to -77 degrees Celsius, the exhaust gas can be kept at levels of 5000–3000 ppm. However, simply cooling dichloromethane exhaust to such low temperatures often leads to frosting, which can cause blockages, and it also requires high energy consumption. It is recommended to use a \"pressurization + condensation + membrane\" process for recovery. The technology is mature and stable, with a recovery efficiency of up to 99%. For inquiries, please contact Mr. Li at 15850669279