title: Pilot plant test of the advanced flash stripper for CO2capture.
abstract: Alternative stripping processes have been proposed to reduce energy use for CO2capture, but only a few have been applied to pilot-scale experiments. This paper presents the first pilot plant test results of one of the most promising stripper configurations, the advanced flash stripper with cold and warm rich solvent bypass. The campaign using aqueous piperazine was carried out at UT Austin in 2015. The advanced flash stripper improves the heat duty by over 25% compared to previous campaigns using the two-stage flash, achieving 2.1 GJ per tonne CO2of heat duty and 32 kJ mol-1CO2of total equivalent work. The bypass control strategy proposed minimized the heat duty. The test successfully demonstrated the remarkable energy performance and the operability of this advanced system. An Aspen Plus® model was validated using the pilot plant data and used to explore optimum operating and design conditions. The irreversibility analysis showed that the pilot plant performance has attained 50% thermodynamic efficiency and further energy improvement should focus on the absorber and the cross exchanger by increasing absorption rate and solvent capacity.
authors.affiliation: Texas Carbon Management Program, McKetta Department of Chemical Engineering, The University of Texas at Austin, 200 E Dean Keeton St, C0400 Austin, TX 78712-1589, USA. gtr@che.utexas.edu.
authors.forename: Yu-Jeng
authors.initials: YJ
authors.lastname: Lin
authors.affiliation: CO2 Capture Pilot Plant Project, The University of Texas at Austin, Pickle Research Campus, 10100 Burnet Rd., Bldg 133, R7100, Austin, TX 78758, USA.
authors.forename: Eric
authors.initials: E
authors.lastname: Chen
authors.affiliation: Texas Carbon Management Program, McKetta Department of Chemical Engineering, The University of Texas at Austin, 200 E Dean Keeton St, C0400 Austin, TX 78712-1589, USA. gtr@che.utexas.edu and CO2 Capture Pilot Plant Project, The University of Texas at Austin, Pickle Research Campus, 10100 Burnet Rd., Bldg 133, R7100, Austin, TX 78758, USA.
authors.forename: Gary T
authors.initials: GT
authors.lastname: Rochelle