RTOs are installations reducing the emission of VOC in the atmosphere and using waste energy from industrial and burning processes.
RTO systems are based on ceramic beds and thermal energy recovery which enables us to reach 95% TER. RTOs operate with oxidation temperatures over 760 - 820°C (1400 - 1520 °F). Using 2, 3 or 5 chambers allow the air flow at 3.000 – 80.000 m3/h.
Possible applications for low and medium VOC concentration is: 0,5 - 15 g/m3.
The majority of RTOs have 3 chambers and thermal recovery installations operating in autothermal conditions. This results in power costs’ reduction thanks to using up the burning energy for increase of outlet gases temperature. The right conditions in the burning chamber contribute to almost complete processed air purification.
RTO process visualiation
RTO elements:
-
1
Raw gas inlet
-
2
air distribution inlet/outlet, diverter valves system
-
3
RTO chamber, combustion chamber
-
4
burner
-
5
-
6
fan
-
7
stack
-
8
thermal isolation
Steps of the RTO process:
-
I
Air flow through the RTO is sequenced to individual heat recovery chambers through a system of diverter valves,
-
II
recovery chambers which are filled with ceramic exchange media and absorbs the heat from the previous cycle.
The ceramic has high thermal recovery, low thermal expansion coefficient and is resistant for thermal shocks -
III
When the air reaches the combustion chamber the burners provide the additional thermal energy required to for sufficient chamber temperature to oxidize the contaminants.
At the appropriate time and a temperature above 850°C, the decoposition to CO2 and H2O follows -
IV
The clean air passes down through the recovery chamber which is in the exhaust mode.
-
V
Clean and cool air leaves the RTO,
-
VI
During the switching operation afterburner chamber, followed by a short-term increase in emissions, having no impact on acceptable - Asked standards,
-
VII
Cycle time depends on the process and the possible extent is 60s – 240s
RTO elements:
-
1
Raw gas inlet
-
2
air distribution inlet/outlet, diverter valves system
-
3
RTO chamber, combustion chamber
-
4
burner
-
5
-
6
fan
-
7
stack
-
8
thermal isolation
Steps of the RTO process:
-
I
Air flow through the RTO is sequenced to individual heat recovery chambers through a system of diverter valves,
-
II
recovery chambers which are filled with ceramic exchange media and absorbs the heat from the previous cycle.
The ceramic has high thermal recovery, low thermal expansion coefficient and is resistant for thermal shocks -
III
When the air reaches the combustion chamber the burners provide the additional thermal energy required to for sufficient chamber temperature to oxidize the contaminants.
At the appropriate time and a temperature above 850°C, the decoposition to CO2 and H2O follows -
IV
The clean air passes down through the recovery chamber which is in the exhaust mode. Trzecie łoże służy uniknięciu emisji powietrza obciążonego LZO podczas zmiany kierunku cyklu RTO
-
V
Clean and cool air leaves the RTO,
-
VII
Cycle time depends on the process and the possible extent is 60s – 240s
RTO elements:
-
1
Raw gas inlet
-
2
air distribution inlet/outlet, diverter valves system
-
3
RTO chamber, combustion chamber
-
4
burner
-
5
-
6
fan
-
7
stack
-
8
thermal isolation
Steps of the RTO process:
-
I
Air flow through the RTO is sequenced to individual heat recovery chambers through a system of diverter valves,
-
II
recovery chambers which are filled with ceramic exchange media and absorbs the heat from the previous cycle.
The ceramic has high thermal recovery, low thermal expansion coefficient and is resistant for thermal shocks -
III
When the air reaches the combustion chamber the burners provide the additional thermal energy required to for sufficient chamber temperature to oxidize the contaminants.
At the appropriate time and a temperature above 850°C, the decoposition to CO2 and H2O follows -
IV
The clean air passes down through the recovery chamber which is in the exhaust mode.
-
V
Clean and cool air leaves the RTO,
-
VII
Cycle time depends on the process and the possible extent is 60s – 240s