EPA promulgated the Ethylene Risk and Technology Review (RTR) National Emission Standard for Hazardous Air Pollutants (NESHAP, 40 CFR, Part 63, Subpart XX and Subpart YY) on July 6, 2020. It is applicable to new and existing ethylene production units. The final rule included requirements for furnace and decoke operations, flares, process vents, heat exchange systems and pressure relief devices. The final rule eliminated the exemption for startup, shutdown and malfunction operations and requires the emission limits must be met at all times.
This paper will discuss the rules and the potential impact on the ethylene production units.
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