GPU环境技术
VOCs Treatment

RTO or Catalytic Combustion: Which Fits Your Organic Exhaust

Operating temperature, concentration window, catalyst poisoning risk, fuel use and safety interlocks compared for RTO and catalytic combustion units.

2026-07-097 min readGANGPU engineering team
RTO and catalytic combustion units for organic exhaust treatment at a factory

Operating temperature, concentration window, catalyst poisoning risk, fuel use and safety interlocks compared for RTO and catalytic combustion units.

What this article covers

  • Selection method for vocs treatment equipment under real plant conditions
  • The parameters that decide sizing: gas volume, temperature, dust or pollutant load and the outlet limit
  • Material and media choices that affect service life and running cost
  • Installation, commissioning and maintenance points that are often missed in quotation stage

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Equipment in this article

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Two or three chamber regenerative thermal oxidizer for medium to high concentration organic exhaust with heat recovery ceramic beds.

Air volume
5,000 - 120,000 m³/h
Combustion temperature
760 - 850 °C
Heat recovery
≥ 95%
Destruction efficiency
≥ 99% (project dependent)
Catalytic combustion VOCs purification unit installed at a coating factory

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Catalytic Combustion Unit (RCO / CO)

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Lower temperature catalytic oxidation for medium concentration organic exhaust, often combined with activated carbon desorption.

Air volume
2,000 - 60,000 m³/h
Reaction temperature
250 - 400 °C
Catalyst
Pt / Pd honeycomb ceramic
Fuel saving
Lower than thermal oxidation at same flow
Activated carbon adsorption unit for organic exhaust treatment at a factory

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Activated Carbon Adsorption Unit

GP-AC Series

Granular or honeycomb carbon adsorption boxes for low concentration organic exhaust and odour, used alone or with desorption.

Air volume
1,000 - 50,000 m³/h
Carbon type
Granular, honeycomb, pellet
Face velocity
0.3 - 0.8 m/s
Resistance
500 - 1,200 Pa
Packed spray scrubber tower for gas washing at a chemical plant

VOCs Exhaust Treatment

Spray Scrubber Tower (Wet Gas Washing)

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Counter-current packed scrubber for acid gas, alkali gas, dust and water soluble organics, in PP, FRP or stainless steel.

Air volume
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Tower diameter
Ø600 - Ø4,500 mm
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Resistance
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