Pilot Plant Activities with Concentrated Piperazine

Amine aerosol testing was conducted at the University of Texas at Austin CO2 capture pilot plant using concentrated piperazine (3.7 molal) and high temperature flash with cold rich bypass (140 degrees C). Two methods of piperazine aerosols generation were tested: H2SO4 injection with a liquid vaporizer injector, and direct injection 20 ppm of SO2 into the synthetic flue gas. A Phase Doppler Interferometer (PDI) analyzer from Artium Technologies was used to measure piperazine aerosol droplet sizes and distributions at the absorber gas outlet. A FTIR system with new upgraded heated probes was used to make measurements of total PZ concentrations at the absorber gas inlet and outlet. A manual sampling train method was used to provide secondary validation of FTIR and PDI measurements. (C) 2014 The Authors. Published by Elsevier Ltd.