The State of Technology for Monitoring PM and HCl under the EGU NESHAP

摘要

The electric generating unit (EGU) final NESHAP (Utility MATS Rule) will, for many coal-fired power plants, result in the installation and operation of continuous emission monitors (CEMS) for particulate (PM) and hydrochloric acid (HCl) emissions. Although PM monitors were first installed at power plants in the U.S. in 2004, there are relatively few in operation today. Similarly, HCl monitors have been used for many years at municipal and hazardous waste incineration systems, but the first installation at a coal-fired power plant was not until 2011. Sargent & Lundy, L.L.C. (S&L) investigated the status of PM and HCl emissions monitors in the U.S. This included reviewing the technologies and the variety and availability of monitors. This paper presents the results of the study as well as a review of the monitoring requirements under the Utility MATS and the applicability of available monitors to meet these requirements. Also reviewed are the factors that a utility should consider in choosing to monitor particulates either with periodic stack sampling, a PM CEMS or with a PM CPMS (continuous parameter monitoring system) and the complexities in certifying an HCl CEMS with the U.S. Environmental Protection Agency's (EPA) current Performance Specifications (PS).