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Articles & Resources From Combustion Controls Solutions & Environmental Services, Inc.

3454 Silica Road, Sylvania, Ohio 43560
Phone: 419.841.9984    Fax: 419.841.9535

Worldwide Outdoor Air Pollution Problem

Thermal oxidizer cost-efficiency in air pollution control






How important is air pollution control? Each year outdoor air pollution sources contribute to 3.3 million mortalities worldwide [1]. The global burden of contaminated air flows from industrial and manufacturing processes can subside, if the air is properly and efficiently purified. Thermal processing equipment minimizes the operating costs of efficiently destroying pollutants in air flows, such as Hazardous Air Pollutants (HAPs), Volatile Organic Compounds (VOCs), and other odorous emissions released during industrial or manufacturing processes. So, how do oxidizer systems achieve cost-efficient operation?



The solution to efficient oxidizer operations involves the minimizing the thermal processing equipment costs with the dual condition of maximizing drying and oxidizing systems productivity. In what follows we will explain the criterion for such a solution. Initial efforts in the minimization of operating costs in oxidation systems typically involves a reduction in the exhaust air from oven systems and process dryers. However, efforts for a true minimum of operating costs can only be achieved by emphasizing air managament within the process during the design of air pollution control technology. In other words process optimization includes control, capture, and destruction efficiency for oxidizer efficiency; and the design criteria include a schedule of production, elements of the airstream, exhaust rate, particulates and non-volatile oxidation products, as well as temperature.



In the remainder of this article on cost-efficient air purification processes we will focus on the three, aforementioned elements of oxidizer efficiency: control efficiency, capture efficiency, and destruction efficiency. First we will examine control efficiency. This element of oxidizer efficiency incorporates regulatory restrictions for VOC control. In some applications, such as coating, the emissions requirements for control is 95%. However, some regions have stricter regulations and may requrie at least 98% VOC control efficiencies. For capture efficiency, which is required by most systems today, enclosures around coating equipment may be necessary. The enclosures are known as permanent total enclosures, or PTEs for short. The point of a PTEs is the capturing of solvents at a nearly perfect rate, i.e., optimal efficiency. This allows PTEs to have direct ducting into pollution control systems. Now, that VOCs have been confined to a region, namely captured, the VOCs are directed to emission control devices. In the solution for emissions from industrial processes an oxidation system is utilized as an end-of-the-pipe control. To achieve the desired destruction efficiency rate the oxidizer system should tailor to the specific needs of the application. Combustion Controls Solutions and Environmental Services works at the interface of technological innovation and user-friendliness in oxidizer systems. We specialize in the manufacturing of cost-efficient thermal oxidizers that minimize production downtime and provide state-of-the-art air pollution control to meet your company's needs.



Reference

[1] J. Lelieveld et al., The contribution of outdoor air pollution sources to premature mortality on a global scale, Nature 525, 367-371 (2015), doi: 10.1038/nature15371




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