airprotech srl
air protection technology
RTO
Regenerative Thermal Oxidizer
2 chambers + compensation
Sede Legale e Unità Operativa: Viale Lombardia, 33 – 20013 MAGENTA (MI) ITALY – tel. 02 9790466 – 02 9790364 – fax 02 97297483
Cap. Soc. Euro 103.000 i.v. – C.F. 11520580157 – p.iva 03134260961
E-mail: [email protected]– http://www.airprotech.eu
airprotech srl
air protection technology
Application field
Wide. The regenerative system allows
recovery efficiency up to 96%, thus
minimizing the management costs of the
plant. Under self-supporting conditions,
the heat produced by the exothermal
oxidation reaction of the S.O.V. is
enough for maintaining the temperature
in the combustion chamber without using
any auxiliary fuel.
Plant description
The combustion unit is made of a
combustion chamber equipped with a
burner and two pre-heating / heat
recovery chambers. The combustion
chamber, made of a main carbon steel
structure, is internally covered with
ceramic fibre. The minimum foreseen
operation temperature is of 720°C and
the minimum holding time of 0.6 s.
The 2 pre-heating / heat recovery
chambers contain ceramic Pall rings
which alternatively pre-heat the incoming
gases and recover heat from the
outgoing smokes. The incoming flow and therefore the outgoing flow - is
alternatively inverted according to timed
cycles of about 90÷120°C and through
perfectly tight pad valves.
The compensation chamber, which could
not be necessary on the base of
the
incoming concentration, has the taskof
stocking the non-purified air coming from
the inlet/outlet inversion transitory device.
Sede Legale e Unità Operativa: Viale Lombardia, 33 – 20013 MAGENTA (MI) ITALY – tel. 02 9790466 – 02 9790364 – fax 02 97297483
Cap. Soc. Euro 103.000 i.v. – C.F. 11520580157 – p.iva 03134260961
E-mail: [email protected] – http://www.airprotech.eu
airprotech srl
air protection technology
Operating principle
Phase 1/A: KV-01 A and KV-02 B valves open; all the other valves closed.
The gas enters the system going through one of the two ceramic beds (bed A) from
the bottom to the top, thus pre-heating itself. Afterwards, the gas goes through the
combustion chamber, where the exothermal oxidation reaction is completed
(supporting itself or through the burner’s energy supply). The heat deriving from the
oxidation reaction is ceded by the outgoing warm air to the ceramic bed (bed B)
before flowing out in the chimney through the KV-02 B valve.
Phase 2/A inversion: KV-01 B and KV-03 A valves open; all the other valves closed.
At the moment of the inversion of the travelling direction of the gas flow, the
compensation phase starts: the volume of the gas, not completely purified yet, is
diverted towards the compensation chamber for nearly 3÷4 seconds.
Phase 1/B: KV-01 B and KV-02 A valves open; all the other valves closed. The
process is exactly the same as previously described in phase 1/A, with the incoming
and outgoing beds inverted. Between a compensation phase and the following one,
the volume of the polluted gas contained in the compensation chamber is sucked
into the purification circuit and reintegrated into the chamber by an equivalent volume
of “clean” air, withdrawn by the chimney.
Sede Legale e Unità Operativa: Viale Lombardia, 33 – 20013 MAGENTA (MI) ITALY – tel. 02 9790466 – 02 9790364 – fax 02 97297483
Cap. Soc. Euro 103.000 i.v. – C.F. 11520580157 – p.iva 03134260961
E-mail: [email protected] – http://www.airprotech.eu