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The first steps in curbing the output of industrial air pollutants is in understanding the engineering and physics behind any specific manufacturing process. Identifying types of pollutants found in exhaust streams and knowing the correct abatement requires rigorous training in a host of disciplines and is typically accomplished through a partnership between an experienced engineering firm and plant engineers during the design process. This partnership will determine the best course of action to specific pollution controls. Many air quality issues face producers nationwide with a corresponding galaxy of standards and regulations governing them. Among the hazardous air pollutants in industrial exhaust, volatile organic compounds (VOCs) and Nitrogen Oxides (NOx) are among the most scrutinized. Each of these pollutants have been recognized as primary components of smog and following the 1970 Clean Air Act have been closely monitored at a federal and state level. For VOCs, the preferred remediation solution is typically through a thermal or catalytic oxidizer. Ranging from regenerative to recuperative and direct-fired oxidizers - these thermal oxidizers essentially destroy VOCs found in petro-chemical manufacture with heat while attempting to recover energy to perpetuate the control process. Some thermal oxidizers use a catalyst bed to lower temperatures in the reaction and save energy. But the efficiency and compliance reliability of a thermal oxidizer is only as good as its last service. With extreme heat and exposure to heavy fouling along either exhaust flues or media beds, only solid thermal oxidizer service can keep a device in operation. A long-term preventative maintenance schedule with an experienced thermal oxidizer service provider is the preferred method to gaining continued operation and efficiency. Some engineering firms specializing in thermal oxidizer service also have experience in the install and service of NOx controls. Abatement of NOx from the industrial process is normally achieved with a Selective Catalytic Reduction system (SCR). This system employs an ammonia injection into the exhaust stream before introducing the mixture to a specific catalyst bed that prompt a reaction - the end result is an exhaust of water and nitrogen, rendering the NOx harmless. This control typically can find 95-percent efficiency with a well tuned and maintained control system.
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Jeffery Holter is a professional freelance writer based out of Los Angeles, California. If you would like to know more about thermal oxidizer services, please visit OxidizerService.com
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