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Dynegy SDA installation at Baldwin is permitted for new wastewater discharges
The subject facility has applied for a renewed NPDES permit which includes modifications that necessitate an antidegradation assessment. New wastewater discharges will be created as the result of the construction and operation of new dry flue gas desulfurization systems (Spray Dryer Absorbers or SDAs) at all three units at the complex. The installation of these systems was required by the terms and conditions of a 2005 Consent Decree between Dynegy, the state of Illinois, USEPA, and the U.S. Department of Justice. Construction of the Unit 3 SDA system and baghouse has been completed and they were put into service prior to December 31, 2010. The Unit 1 SDA system and baghouse were placed into service by December 31, 2011. The Unit 2 SDA system and baghouse were placed into service by December 31, 2012. The new discharges from these systems would consist of sump discharges, air compressor noncontact cooling waters, and miscellaneous floor and storm drainage waters. Dynegy is requesting authorization to discharge these wastewaters to the existing bottom ash pond system and include these discharges as contributory wastewater streams to Outfall 001. Sump discharges are not expected to occur more than once per week with each discharge lasting approximately five minutes. Based on the current operation of the Unit 3 sumps (projected discharge of 0.127 MG/year), it is expected that sump discharges for all units would contribute 0.38 MG/year of flow to the ash pond. Air compressor noncontact cooling waters from the new SDA systems (6.5 MGD) and miscellaneous floor and storm drainage waters would be received by the cooling pond and would be potentially discharged from Outfall 002 during overflow conditions
Revision Date: 1/19/2019
Tags: 221112 - Fossil Fuel 化石燃料, Dynegy, Spray Dryer Absorber, Fabric Filter, Wastewater
Graff Wulff ( now FW) CFB at Dry Fork is 420 MW and the largest in North America
The CFB absorber at Dry Fork has been operating since 2011 and with the 4500 ft elevation is the equivalent of a 500 Mw unit at sea level . the system is now being sold through Foster Wheelere. Given the efficiency requirements and concern about water the decision relative to SO2 removal choice was limited.
Revision Date: 3/19/2014
Tags: 221112 - Fossil Fuel 化石燃料, Foster Wheeler, Nooter/Eriksen Environmental Technologies, Basin Electric, Spray Dryer Absorber
SDA units supplied by B&W are meeting MATS compliance
Five spray drier scrubber systems furnished by B&W are performing at well below the MATS HCl limit of 0.002 lbs/M btu, the mercury limit of 1.2 lbs/tmbtu, and the filterable pm limit of 0.03 lbs/MBTu
Revision Date: 3/19/2014
Tags: 221112 - Fossil Fuel 化石燃料, Babcock & Wilcox, Spray Dryer Absorber
Boosting SDA efficiency with DSI at Wygen 3
The SDA is challenged to meet efficiency when the flue gas temperature is low or the Sow concentration is high. B&W found out how to improve efficiency under thes conditions at Wgen 3 . the answer is to inject dry hydrated lime. So in effect you are combining DSI and SDA
Revision Date: 3/19/2014
Tags: 221112 - Fossil Fuel 化石燃料, Babcock & Wilcox, Black Hills Power, Spray Dryer Absorber, Direct Sorbent Injection, Lime
Comparison of components and systems in dry scrubbing
Paul Farber presented good detailed analysis of components as well as systems. He compared rotary atomizer vs dual fluid nozzles I SDA and addressed both the fluidized bed and Nids as sub segments of CDS. For example NIDS is limited to much smaller modules. Dual fluid nozzle design has smaller footprint. Waste handling and DSI are also covered in extensive analysis
Revision Date: 3/18/2014
Tags: Dual Fluid Nozzle, Spray Dryer Absorber, Circulating Dry Scrubber, Direct Sorbent Injection, Rotary Atomizer, Slaker
Spray Dryer FGD at TEP Springerville
The dry FGD system for each unit comprises three spray dryer absorbers (SDA) with rotary atomizers and a reverse-air fabric filter. The Springerville Station receives high-calcium pebble lime via rail, and a pneumatic system transports the lime to a day bin located at each unit. Horizontal ball mill slakers convert the pebble lime to lime slurry, which is combined with a slurry of recycled material from the fabric filter just prior to being fed to the rotary atomizer. When the units were constructed, the dry FGD systems were built with a partial bypass, the result of which is that 75% of the flue gas is treated in the spray dryers and the bypassed flue gas is recombined with the scrubbed stream before entering the fabric filter. TEP, with S&L as Owner’s Engineer, implemented the following modifications to reduce NOX and SO2 emissions: • Installation of low-NOX burners and overfire air (NOX). • Installation of a fourth spray dryer and elimination of the flue gas bypass (SO2).
Revision Date: 3/18/2014
Tags: 221112 - Fossil Fuel 化石燃料, AEP / SEPCO, Tucson Electric Power, San Miguel Electyric Cooperative, Spray Dryer Absorber
John Buschmann, Technology Manager at ALSTOM Power Inc., provided an overview of the proposed Utility MACT emission values and discussed the implications for utilities seeking compliance not only under Utility MACT but also under CSAPR and various other existing and anticipated regulations. The solution is not a one-size-fits-all approach but rather a careful balancing of combinations of AQCS technologies that make up an overall compliance plan.
Revision Date: 10/27/2011
Tags: 221112 - Fossil Fuel 化石燃料, Alstom Power, SCR, Circulating Dry Scrubber, Spray Tower, Reagent, Dry Sorbent Injection, FGD, Spray Dryer Absorber, Chemical Injection, Air Quality, SO2, SO3, HCl, Mercury
Multi-Emissions Control - Webinar - Hot Topic Hour October 27, 2011
Speakers discussed the technology and equipment available or under development that provides multi-emissions control and can be implemented by EGU operators to achieve compliance with CSAPR and MACT limits.
Revision Date: 10/27/2011
Tags: 221112 - Fossil Fuel 化石燃料, Alstom Power, United Conveyor, Solvay Chemicals, Spray Dryer Absorber, Reagent, Chemical Injection, Dry Sorbent Injection, Spray Tower, FGD, SCR, Sodium Bicarbonate, Trona, Circulating Dry Scrubber, Direct Injection System, Air Quality, SO2, SO3, HCl, Mercury