For members only
ABSTRACTS
Enhancing ESP Efficiency through Sonic Horn Optimization for Improved FGD Performance and Gypsum Quality
Batıkan Aydın
Electrostatic precipitators (ESPs) play a vital role in capturing fly ash from flue gases in thermal power plants. Traditional ESPs often encounter efficiency challenges due to fly ash accumulation on collection plates, necessitating frequent rapping systems to dislodge the ash. These rapping systems can be inefficient and lead to operational downtimes. The integration of sonic horns into ESP systems has demonstrated significant efficiency improvements. Sonic horns utilize acoustic waves to effectively dislodge accumulated fly ash from the plates, promoting continuous and thorough cleaning. This method mitigates the re-entrainment of fly ash, resulting in a more consistent and reliable collection process.
Pilot studies have shown that ESP systems equipped with sonic horns provide significant improvements in equipment lifespan and dust collection efficiency. This enhancement translates to reduced maintenance costs, decreased operational downtimes, and improved overall plant performance. Additionally, the implementation of sonic horns reduces the risk of damage to ESP components, thereby extending their operational lifespan. The incorporation of sonic horn technology represents a substantial advancement in ESP efficiency, offering a cost-effective and robust solution for fly ash management in thermal power plants.
PPCHEM® 2025, 27(3), 130–134
For Members only
White Paper (PCC WP 24-001): Corrosion Product Sampling, Monitoring and Analysis for Flexible and Fast Starting Plants
IAPWS PCC Working Group
This White Paper has been released by the International Association for the Properties of Water and Steam (IAPWS) Power Cycle Chemistry (PCC) Working Group. An IAPWS PCC White Paper is intended to be a preliminary technical document collating knowledge on a particular subject to provide a basis for the potential future development of a related Technical Guidance Document. They are not formal IAPWS outputs as such.
This White Paper considers the sampling and monitoring of total iron and copper corrosion products for flexible and fast starting conventional fossil and combined cycle/HRSG plants. It provides correct sampling conditions and appropriate proxy methods such as turbidity and particle counting/monitors to track metal oxides during steady and transient load, and even during startup.
The White Paper introduces a procedure for quantification of corrosion products that reflect the success or failure of the preservation methods applied during shutdown. The IAPWS Corrosion Product Decay Map grades the outcome of this measurement during startup in a simple and illustrative manner allowing an operator to plot the local results directly against the international experience and to improve the operational and shutdown chemistry in a move towards more optimized conditions in the future.
This IAPWS White Paper Document contains 50 pages, including the cover page
Further information about this White Paper and other documents issued by IAPWS can be obtained from the Executive Secretary of IAPWS (Dr. D.G Friend, gro.swpai@dneirf.gd) or from http://www.iapws.org.
PPCHEM® 2025, 27(3), 140–189
