PMscreen
PMscreen
PMscreen is a technology developed by E1E in partnership with the Electric Power Research Institute (EPRI). E1E personnel worked with EPRI on concepts for low-cost, low-footprint retrofit technologies to improve particulate capture performance for electrostatic precipitators struggling to meet environmental compliance limits.
Initial research and development work focused on lab and bench-scale testing of a wide range of concepts with promise to enhance particulate capture while limiting pressure drop across a retrofit collection device. Evaluation of various electrodes to impart additional electrical charge to particles combined with novel filtration media resulted in several concepts that held promise.
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The next phase of PMscreen development was a pilot-scale test unit, designed and built by E1E personnel that could be utilized to evaluate novel particulate capture concepts using flue gas from an operating coal fired utility boiler.
Using the pilot test unit to evaluate a range of filtration media and electrical charging concepts resulted in the development of a moving belt filter that could be installed downstream of an ESP with performance issues to enhance overall capture with minimal increase in the overall pressure drop across the particulate control device. The results from the small-scale pilot unit were used to design and build a 1 MWe proof of concept demonstration unit.