CPI Installs RTO for Rubber Tire Manufacturing


    Catalytic Products International (CPI) installed a Regenerative Thermal Oxidizer (RTO) at an rubber tire manufacturer for the abatement of Volatile Organic Compounds (VOCs) from the rubber mixing process.

    CPI RTO 50.95 for Tire Rubber Mixer VOC Control    

    The 50,000 SCFM TRITON 50.95 Regenerative Thermal Oxidizer (RTO) with control house was installed as part of facility expansion and will control VOC emissions from multiple mixers. The process emissions are ducted to a Mixer Dust Collector pre-filtration system where particulate is removed from the exhaust stream prior to being ducted to the RTO. The RTO destroys the VOC emissions with 98% destruction rate efficiency (DRE) and a thermal efficiency of 95%.

    Thermal treatment of VOCs and other air pollutants works by a simple reaction of the harmful hydrocarbon-based air pollutants with oxygen and heat. In this environment, the VOCs are oxidized to form harmless inert by-products like CO2, water vapor (H2O), and usable heat. These harmless by-products are released to the atmosphere or used within primary or secondary energy recovery techniques to further lower the operational costs.

    CPI Regenerative Thermal Oxidizers (RTOs) are engineered to provide exceptional performance and reliability. During operation of the standard two chamber RTO, the VOCs are directed into one of the system’s regenerators, an internally insulated vessel containing specialized ceramic media which allows thermal rate efficiencies up to 97%. The contaminated gases are passed through the first regenerator where energy is transferred from the ceramic media to the gas in order to elevate the temperature. This elevated temperature approaches the ignition level for most solvents and is then directed from the ceramic bed into the combustion chamber. As the stream exits the ceramic bed and travels through the internally lined combustion chamber, minimal heat is added to ensure a proper oxidation temperature and a designed dwell time is maintained providing destruction of the VOCS at greater than 98% efficiency. The resultant clean, oxidized gases are directed to the second regenerator to absorb the heat energy before being released to the atmosphere.

    CPI worked closely with this longtime customer providing design and supply of the Regenerative Thermal Oxidizer, exhaust stack and control house, as well engineering support, installation supervision, and startup services.


    EPA Updated Rule - National Emission Standards for Hazardous Air Pollutants:  Rubber Tire Manufacturing

    In November 2023 the U.S. Environmental Protection Agency (U.S.EPA) published a proposed an amendment to the National Emission Standards for Hazardous Air Pollutants for Rubber Tire Manufacturing.  There are currently no emission limits for the rubber processing subcategory of the Rubber Tire Manufacturing category.  The EPA is looking to address this by proposal to establish maximum achievable control technology (MACT) limits for total hydrocarbons (THC).  The proposed rule can be found here


    Since 1969, CPI has been Enabling Clean Production™ as a leading supplier of air pollution control solutions. CPI is at the forefront in providing industries including the automobile industry with solutions to their air pollution control needs.

    Today, CPI partners with its customers as a trusted resource in resolving the most complex air pollution and energy conservation problems. We provide our customers with innovative and cost-conscious solutions to their most complex VOC, NOx, and Odor pollution challenges. Our equipment is also at work meeting energy conservation strategies and minimizing greenhouse gas (GHG) emissions.

    Topics: Air Pollution Control, Regenerative Thermal Oxidizer, News, Rubber Tire Manufacturing, Blog

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