Dry Emission Control Technology for Glass Melting Furnace by Plasma-Chemical Hybrid Processing

To use the continuous combustion of fossil fuels as a sustainable energy source, a low-cost and energy-saving exhaust gas treatment for NOx, SOx, and suspended particulate matter is required. The plasma hybrid exhaust gas treatment technology proposed by the authors is not only a method of plasma treatment, but also a method that combines it with a chemical process, such as chemical solution stabilizer, to clean exhaust gas. This study reports the simulation and application of glass melting furnace exhaust gas treatment as a practical result of the plasma chemical hybrid process (PCHP). In the experiment, higher removal efficiencies of NO, NOx, and SOx (33, 16, and 55%, respectively) were obtained. The energy efficiency of NOx removal by evaluating the electrical power using the cost of NaOH and the power of ozonizers was measured to be 23 g(NO2)/kWh. From comparison, the simulated and experimental temperature distributions and NOx concentration were found to be in good agreements. This indicates that numerical design simulation produces a satisfactory result. PCHP can potentially be the most suitable method for exhaust gas treatment in glass melting furnaces.