Heat Rate Improvement Case Studies on Coal-Fired Power Plants

摘要

The EPA issued an advanced notice of proposed rulemaking for emission guidelines to limit GHG emissions from existing EGUs and solicited background information on the 'available and appropriate' technologies for limiting GHG emissions from existing facilities. After reviewing information submitted in connection with this advanced notice, EPA is currently in the process of issuing a proposed rule to replace the current rule proposed and finalized by the previous administration known as the Clean Power plan (CPP). As part of the original CPP proposal, Sargent & Lundy (S&L) conducted heat rate improvement (HRI) audits on ～13,000MW of generation. Some of these results were submitted to the EPA in comments by utilities or by organizations representing utilities, such as the NRECA. This presentation will review HRIs technologies that are available to existing EGUs and identify applicability limitations, based on audit experience. Case studies present areas where HRI measures have already been implemented and identify potential future applications. Site specific limitations considerations, combination of HRI measures and effects on overall improvement potentials, effects of cycling, and sustainability of the HRI are also highlighted. With our experience, S&L will draw fleet-wide conclusions for 'applicable and appropriate' HRI technologies with overall highest contribution potential.