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Description

Title:Flue Gas Aerosol Pretreatment Technologies to Minimize PCC Solvent Losses
Author(s):Bostick, Devin; OBrien, Kevin C; Biswas, Pratim; Larson, Greg; Larson, Mike
Contributor(s):Linde Group; Illinois Sustainable Technology Center; Washington University in St. Louis; Affiliated Construction Services; University of Illinois Urbana-Champaign Abbott Power Plant
Subject(s):Carbon dioxide capture
CO2 capture
Coal-fired power plants -- Aerosol mitigation
Flue gas
Geographic Coverage:Champaign, IL
Abstract:Linde, LLC, with partners University of Illinois at Urbana-Champaign (UIUC), Washington University in St. Louis (WUSTL), and Affiliated Construction Services (ACS), will design, construct, and validate enabling technologies for pretreatment of coal-based flue gas for aerosol mitigation in solvent-based post-combustion carbon dioxide (CO2) capture (PCC) systems. Current aerosol mitigation strategies, such as baghouse installation upstream of the PCC plant, amine wash sections, and specific absorber operating conditions, can manage only a limited range of aerosol particle densities and are unfavorable due to significant cost and energy requirements. Two flue gas aerosol pretreatment technologies have been identified that can effectively reduce very high aerosol concentrations for particles in the range of 70 to 200 nm, which have been shown to contribute to amine losses through the treated gas stream exiting the absorber in a solvent-based PCC system. The first option is a novel, high-velocity, water injection spray concept that has been previously developed and tested by RWE Power at a lignite-fired power plant in Niederaussem, Germany, and has exhibited the ability to effectively reduce aerosol-driven amine losses in the treated gas. The second option is an innovative lab-scale electrostatic precipitator (ESP) designed by WUSTL and previously tested on flue gas entering the Linde-BASF PCC pilot at the National Carbon Capture Center, in which an aerosol particle removal efficiency of greater than 98.5 percent was obtained. The team will develop a mechanistic model characterizing aerosol formation and interaction with amine solvent in the absorber of a PCC plant and will complete a detailed design, engineering, and cost analysis for each pretreatment option. The technologies will be independently tested at Abbott Power Plant at UIUC using a slipstream of coal-fired flue gas containing high concentrations of aerosol particles (greater than 107 particles per cubic centimeter). The results will be used to benchmark the performance and cost of these technologies against existing options for pretreatment of coal-based flue gas for aerosol mitigation, and to determine the optimal aerosol pretreatment system for commercial deployment and integration with solvent-based PCC technology. A system for effective flue gas aerosol pretreatment located upstream of a solvent-based PCC system absorber will minimize aerosol-driven amine losses, which will reduce the solvent make-up rate, resulting in lower operating costs and less frequent plant shutdowns. The technology offers flexibility in mitigating the wide range of aerosol concentrations and particle size distributions found in the flue gas among most power plants and offers a more economically attractive option compared to other aerosol mitigation methods, including the installation of a baghouse at an existing plant, which involves significant capital cost and a large site footprint. The development of effective flue gas aerosol mitigation technologies will enable successful commercial deployment of transformational and current state-of-the-art solvent-based PCC systems to meet U.S. Department of Energy performance, cost, and schedule targets.
Issue Date:2018-06
Publisher:U.S. Department of Energy National Energy Technology Laboratory
Series/Report:Flue Gas Aerosol Pretreatment Technologies to Minimize PCC Solvent Losses
Genre:Other
Type:Text
Language:English
URI:https://netl.doe.gov/project-information?p=FE0031592
http://hdl.handle.net/2142/113496
Sponsor:U.S. Department of Energy ; DE-FE0031592
Date Available in IDEALS:2022-02-23


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