Compared with traditional catalytic combustion, direct thermal oxidizer, RTO has the merits of high heating efficiency, low operation cost, and the ability to treat large flux low concentration waste gas. When VOCs concentration is high, secondary heat recycle can be realized, which will greatly reduce the operation cost. Because RTO can preheat the waste gas by levels through ceramic heat accumulator, which could make the waste gas to be completely heated and cracked with no dead corner(treatment efficiency>99%),which reduce the NOX in the Exhausting gas, if the VOC density >1500mg/Nm3, when the waste gas reach cracking area, it has been heated up to cracking temperature by heat accumulator, the burner will be closed under this condition.
RTO can be devided into chamber type and rotary type according to difference operation mode. Rotary type RTO has advantages in system pressure, temperature stability, investment amount, etc.