Coil Coating Line with Regenerative Thermal Oxidizer and Multistage Heat Recovery
The Challenge A Coil Coating operation utilized an old direct-fired afterburner and a portion of the exhausts gas to heat a 100’ long curing oven, operating at line speeds up to 700ft/min The Solution Evaluating the appropriate oxidation system for a specific process stream is more challenging and requires in depth analysis of the specific process gas and operating parameters, as there are many configurations to choose from. A Direct Fired Afterburner, sometimes called an incinerator, is the most elementary system, as it contains no heat recovery system. Ideal for high VOC levels and fluctuating operating conditions. Thermal oxidizers are more sophisticated systems with a variety of heat recovery systems and configurations, typically used for larger process air flows. Regenerative system, which uses media to absorb and transfer heat, was selected for this application. In addition they are not steady-state, Instead they rely on a cycling gas, which flows ...