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1.How to determine VOCs treatment process
Depending on the Volume, composition, and concentration of the VOCs,if the volume is small (normally less than 10000Nm3/h) and concentration is high(Calorific value is more than 1000Kcal/Nm3), then the first choice is thermal oxidizer(TO). If the volume is large(more than 5000m3/h) and concentration is small (normally less than 5000mg/m3),then regenerative thermal oxidizer will be considered. If the volume is huge(normally than 50000m3/h) and concentration is little( less than 400ppm), concentration will be choiced. Catalyst oxidizer will be considered if there is no halogen, sulphur contained and volume is not high (less than 30000m3/h) and concentration is suitable(adiabatic temperature rise is less than 300℃).
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2.Influencing factors of emission for RTO
Whether the emission meets standard, the influence factor is as following,
1. The temperature in combustion chamber, normally than 780℃.
2. Sealing of switch valves,zero leakage valves are preferred.
3. Residence time of exhaust gas in combustion chamber is no less than 0.7seconds.
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