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Wet vs. Dry ESP Webinar - Hot Topic Hour November 21, 2013
Revision Date: 11/21/2013
Tags: 221112 - Fossil Fuel 化石燃料, A.H. Lundberg Associates, Pollution Control Services, Siemens Energy, Dry ESP, Wet Electrostatic Precipitator, Maintenance
Revision Date: 11/21/2013
Tags: 221112 - Fossil Fuel 化石燃料, Pollution Control Services, Precipitator, Dry ESP, Maintenance
Greg Carleton of Pollution Control Services, Inc said that the majority of existing ESPs are not operating under their original design basis. Many existing ESPs have not been upgraded with modern operating philosophies or equipment. Taking a holistic approach in evaluating the precipitator in its current operating parameters permits a viable forward plan. It must take into consideration that the operating parameters have been modified as post combustion control equipment like SO3, NOx, and Hg control have been incorporated over the last few years.
Revision Date: 8/25/2011
Tags: 221112 - Fossil Fuel 化石燃料, Pollution Control Services, Precipitator, Maintenance, Performance
Improving Electrostatic Precipitator Performance (Dry & Wet) - Hot Topic Hour August 25, 2011.
Four speakers with more than 100 years of precipitator experience addressed important issues. In order to address the reality of mass particulate monitoring and the concept of tons per year of emissions (as in Title 5 permits), utilities are going to have to obtain some facts on performance of equipment.
Revision Date: 8/25/2011
Tags: 221112 - Fossil Fuel 化石燃料, EPRI, Pollution Control Services, Clyde Bergemann, Alstom Power, Precipitator, Maintenance, Performance
Evaluating Existing Precipitators' Ability to Meet Future PM2.5 Regulations
Revision Date: 1/20/2011
Tags: 221112 - Fossil Fuel 化石燃料, Pollution Control Services, Electrostatic Precipitator
Improving ESP Performance Webinar - Hot Topic Hour January 20, 2010
ESP Performance Improvement can be Substantial - Hot Topic Conclusion on January 20 There has been lots of focus on replacing ESPs with baghouses to meet upcoming regulations. The speakers in the Hot Topic Hour yesterday said there is an alternative. You can upgrade existing ESPs and achieve results which may satisfy future requirements. Dr. Yougen Kong, P.E., Technical Development Manager at Solvay Chemicals, Inc., told the attendees that “there is a better alternative to SO3 for conditioning electrostatic precipitators.” Trona addition system is simple and its capital cost is much lower than that of a SO3 production and injection system. Trona is relatively inexpensive and can be injected in several places. Mick Chambers, Southern Environmental, Inc, said that you can upgrade your ESP and with halogen-based additives in the coal, you can meet the particulate and mercury regulations. He showed that the SCA of recent installations has been relatively low and yet the performance high. So the footprint of a retrofit does not have to be large. When asked about the wet ESP using a fabric for the collection plate, Mick said that it is a good option and successful on industrial boilers and process applications. We were sorry to learn that John Caine passed away in a tractor accident last September. John had represented SEI in several of our previous Hot Topic Hours and has long been a contributor to the industry. Steve Jaasund, Manager Geoenergy Division A. H. Lundberg Associates, made a case for adding a wet ESP after the FGD system to meet the upcoming MACT regulations. In the discussion period it was speculated that the new mass monitoring requirements would make it more difficult for dry ESPs to meet emission limits. The wet ESP will eliminate the exceedance spikes associated with a stand-alone dry ESP. Paul Leanza of Pollution Control Services, Inc. indicated that many utilities have the opportunity to greatly improve performance of their existing precipitators. He indicated that 50 percent of the emissions occur during rapping (rapping reentrainment). These particles are relatively large and do not cause opacity spikes proportional to the mass increase. It was speculated that with mass monitoring this phenomenon will be an unpleasant surprise. Emissions will be higher with mass monitors than they were thought to be with opacity monitors and periodic stack testing. Ron Landreth of Albemarle was pleased to find that their brominated PAC actually improves precipitator performance whereas the non-brominated PAC may add to emissions. So it is worth considering brominated PAC to capture mercury and reduce particulate. Jean Bustard of ADA-ES (ADA Environmental Solutions LLC) related experience with a proprietary conditioning chemical which has performed well and does not impact mercury capture with PAC. The company offers another approach to conditioning hot side precipitators.
Revision Date: 1/20/2011
Tags: 221112 - Fossil Fuel 化石燃料, A.H. Lundberg Associates, Southern Environmental, Pollution Control Services, Albemarle, ADA-ES, Solvay Chemicals, Dry Sorbent Injection, Electrostatic Precipitator, Mercury