The future of gas turbine compliance monitoring: The integration of PEMS and CEMS for regulatory compliance

Conference · Thu Jul 01 04:00:00 EDT 1999

OSTI ID:20002153

Macak, III, J J

When the New Source Performance Standards (NSPS) for Stationary Gas Turbines were first promulgated in 1979 (40 CFR 60, Subpart GG), continuous compliance monitoring for gas turbines was simply a parametric monitoring approach where a unit was tested at four load conditions. For those units where water or steam injection was used for NO{sub x} control, testing consisted of establishing a water (or steam injection) versus fuel flow curve to achieve permitted NO{sub x} emission levels across the load range. Since 1979, the growth in gas turbine popularity has encouraged the development of Predictive Emissions Monitoring Systems (PEMS) where gas turbine operating parameters and ambient conditions are fed into a prediction algorithm to predict, rather than monitor, emissions. However, permitting requirements and technological advances now have gas turbines emitting NO{sub x} in the single digits while the overall combined-cycle thermal efficiency has improved dramatically. The combination of supplemental duct-firing in heat recovery steam generators, pollution prevention technology, post-combustion emission controls, and EPA Continuous Emissions Monitoring System (CEMS) regulations for the power industry, resulted in a shift towards CEMS due to the complexity of the overall process. Yet, CEMS are often considered to be a maintenance nightmare with significant amounts of downtime. CEMS and PEMS have their own advantages and disadvantages. Thus evolved the need to find the optimum balance between CEMS and PEMS for gas turbine projects. To justify the cost of both PEMS and CEMS in the same installation, there must be an economic incentive to do so. This paper presents the application of a PEMS/CEMS monitoring system that integrates both PEMS and CEMS in order to meet, and exceed, all emissions monitoring requirements.

• Research Organization: Mostardi-Platt Associates, Inc., Elmhurst, IL (US)
• OSTI ID: 20002153
• Report Number(s): CONF-990608--
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
AIR POLLUTION ABATEMENT
AIR POLLUTION MONITORING
COMPLIANCE
GAS TURBINES
INDUSTRIAL WASTES
NITROGEN OXIDES
STANDARDS
WASTE MANAGEMENT