Regenerative thermal oxidizer for VOC and NOx reduction
Babcock Wanson
The oxidiser includes:
- Effluent transfer fan with automatic control system,
- Heat storage towers filled with ceramic (2, 3 or 5 towers depending on operating criteria),
- A system of automatic valves for effluent distribution through the towers (designed and manufactured by BABCOCK WANSON),
- Combustion chamber with one or more modulating automatic gas/fuel burners,
- Control panel PLC and operator interface panel.
Operating principle:
The VOC laden air from the process is drawn into the oxidiser by means of a motor driven centrifugal fan. The effluent is heated in the incoming tower, passed through the combustion chamber and cooled by the exit tower, each of which is filled with specialist ceramic material.
To achieve the best thermal oxidation of the VOC (Volatile Organic Compounds), the following conditions must be met:
- temperature between 750 and 950°C,
- dwell time of the effluent in the combustion chamber between 0.6 and 1 second,
- adequate turbulence for efficient mixing of effluent and oxygen.
