In the realm of air pollution control equipment, there are myriad solutions for any issue and any manufacturing plant’s installation. Oxidizers in particular are leveraged to support the cleaning and remediation of emitting processes. Simple or complex, thermal or catalytic, oxidizers are central to producing products that conform to environmental mandates. Our job is to match these technologies with the manufacturing plant and client need.
The broadest definition of oxidizers would include reference to their reliance on extreme temperatures and burners for combustion that is complete. Their combusted feed streams can be converted to over 99% oxidation efficiency.
Known for their versatility and extreme efficiency, Regenerative Thermal Oxidizers are the ideal solutions for low volatile organic compound (VOC) concentrations and during long continuous operations. With low operating costs for high air flow, these allow the clean hot air to be captured (at up to 97%) instead of exhausting all of it to the atmosphere. These are an appropriate means of air pollution control in particular because the RTO is effective at reclaiming effluent heat. Therefore, the units are typically capable of sustaining combustion temperatures without any supplemental fuel, utilizing the VOC as its only heat source.
Thermal Recuperative Oxidizers feature a primary and/or secondary heat exchanger within their systems. The primary exchanger preheats the incoming dirty air by recovering heat from the exiting clean air. As the incoming air passes on one side of the metal tube or plate, hot clean air from the combustion chamber passes on the other side of the tube or plate and heat is transferred to the incoming air using the metal as the heat transfer medium. The secondary heat exchanger process is parallel in nature, but the air being heated by the outgoing clean process stream is returned to another part of the plant. These are commonly the solution for processes where either particulate is present, or when a large amount of energy needs to be deferred elsewhere in a plant.
As their name implies, Catalytic Oxidizers leverage a substance (catalyst) to enhance the reaction which works to lower operating temperatures and in turn lowering the energy requirements for the process. Oxidation occurs through a chemical reaction that is internal to the oxidizer system and with the catalyst, accelerates the rate of the reaction, allowing it to occur in a normal temperature range of 550°F – 650°F (275ºC to 350ºC). These serve as a viable option for applications where consistent VOCs are present including the industrial manufacture of painting and laminating products for example.
These oxidizer alternatives are just an overview of the ways to address the plant-appropriate manufacturing requirements. With a thorough analysis of a company’s product and process, custom solutions for pollution control systems will achieve the objective and support the efficiency of the operation.