used RTOs by Konokogs

What To Look For In A Used Replacement RTO

Buying a Used RTO – What Questions Should Be Asked?


A Regenerative Thermal Oxidizer (often referred to as RTO) destroys pollutants like Hazardous Air Pollutants (HAPs), Volatile Organic Compounds (VOCs), and odorous emissions that are often discharged during industrial processes.


RTOs are the technology of choice today because they achieve the highest VOC destruction with the lowest operating cost, and highest reliability relative to other oxidizer technologies. All oxidizer technologies achieve VOC destruction by exposing pollutant-containing air to a high temperature, for a set period of time, in a turbulent flow path.  Time, temperature and turbulence- Three T’s-  are critical and co-dependent factors that determine oxidizer performance. Regenerative thermal oxidizer systems utilize a special heat recovery method – regeneration- that has proven to be the most cost effective approach for typical industrial applications.


When you’ve got a need for a cost-effective replacement Regenerative Thermal Oxidizer, there are a few key questions to consider. Konokogs carries a large range of RTO brands and types, from MEGTEC, Tann, Adwest, and more. From knowing your exhaust airstream needs to which types of VOCs and emissions will be removed, these are a few of the criteria the Konokogs team will be able to answer to make sure your Used RTO is optimized for your specific needs.


What to Look for in a Regenerative Thermal Oxidizer (RTO):

  • Is the RTO optimized for my exhaust airstream?
    • RTO’s typically treat airstreams with a 0-10% Lower Explosive Limit (LEL)
    • RTO systems can handle 25% Lower Explosive Limit (LEL) airstreams
      • Hot gas bypass systems and other features may be needed
  • Is the ceramic media in the RTO optimized for:
    • maximum thermal efficiency
    • lowest pressure drop
    • Ability to handle organic/inorganic particulates
  • Does the RTO main fan utilize a variable frequency drives (VFD)?
    • Important for volume turn-down and idle operation
  • Is the RTO skid mounted with little welding required in the field?
    • Ease of installation will result in lower turnkey cost
  • Does the RTO have telemetry (Ethernet) for remote troubleshooting access?
    • Remote troubleshooting access  can reduce service visit frequency
  • Are visible emissions eliminated by this RTO?
    • A puff capture feature may be required to eliminate visible emissions
  • Is the RTO burner designed to maintain temperature during full flow, no VOC conditions?
  • Would a fuel gas injection system be a wise choice for this application?
    • Fuel injection can provide significant fuel savings
  • Is there a used RTO system available with the features needed?
    • Quality-built, used regenerative thermal oxidizer (RTO) systems have long life, can save 40-60% vs. new units, and offer performance and parts warranties

Other Used RTO Considerations:

  • Is there a risk of ceramic media plugging due to condensing VOCs?
    • A Bake-out feature can address organic build-up
  • Does the RTO have to address potentially corrosive emissions/halogens?
    • Special materials of construction may be required
  • Would an induced draft fan be a better choice than a forced draft fan?
  • Is there sufficient heat in the RTO exhaust (>250F) to consider secondary heat recovery
  • Is the process sensitive to pressure pulses possible with poppet valve?
  • Do local codes require Low NOX operation?
    • Low NOx burners can be retrofit for these applications.


View our Current RTO and Oxidizer Inventory!

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At Kono Kogs our goal is to ensure that your facility is able to safely and effectively treat process emissions, such as VOCs and HAPs, at a reasonable cost. That’s why we offer a large inventory of warranty-backed, used and refurbished Regenerative Thermal Oxidizers. Our inventory is the largest in North America, and our 22 years of exceeding expectations have set us apart for reliability- we understand this is rare for used equipment suppliers, but we simply think that is the right way to do business.

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