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AQCS Lowers Coal Plant’s Emissions

award winning project(clear_background).pngEmpire District Electric Company turned to Engineer-Procure-Construct (EPC) contractors Stanley Consultants and Alberici Constructors to retrofit their 216 megawatt coal-fired power plant in Asbury, Missouri.  This initiative furthered Empire’s commitment to the environment by implementing a new air quality control system (AQCS) designed to lower the plant’s emissions.

This new system removes sulfur dioxide, particulate, mercury, and other pollutants from the flue-gas exiting the plant through the chimney.  In order to do this, several new emissions control components were added.  This includes a circulating fluid bed dry scrubber, pulse-jet fabric filter, powdered activated carbon (PAC) handling and injection system, and continuous emissions monitoring technology.  In addition, balance-of-plant work included a new 465-foot chimney, an induced draft fan, ductwork modifications, and conversion of the boiler from pressurized to balanced draft.

Stanley Consultants teamed up with the Alberici Constructors on this EPC contract.  Stanley Consultants provided the detailed engineering design , startup and commissioning support, performance testing, and training for this retrofit.  Alberici Constructors constructed the new system.

This $100-million retrofit was commissioned during the summer of 2014 and is scheduled for commercial operation in February 2015.