Electrostatic precipitators (ESP) are the dominant type of particulate control in pulverised coal combustion (PCC) plant; fabric filters (FF) play a smaller role. Environmental pressures and subsequent tighter regulations have lowered emission limit values (ELV) for particulate matter from PCC plant, and they are now extending to specific toxic metals, such as mercury. Lower ELV are generally met by increasing the efficiency of the existing particulate control via numerous enhancements. However, the existing fleet is ageing, various restrictions on site limit what work can be done and PCC plant is progressively operating under non-design conditions. Despite this, further developments in technology have led to significant improvements in collection efficiency and regulations have been met. New hybrid ESP/FF systems aim to become more viable than the individual technology by utilising the advantages of both technologies. The purpose of this report is to review the technical and economic considerations of enhancements in particulate control for PCC plant over the last decade.
Title: Recent developments in particulate control, CCC/218
Author(s): Kyle Nicol
ISBN: ISBN: 978-92-9029-538-9
Publication Date: 01/04/2013