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- W2000975315 abstract "Aqueous piperazine (PZ) blended with N-(2-aminoethyl) piperazine (AEP) is an attractive solvent for CO2 capture from coal-fired power plants. A rigorous thermodynamic model was developed in Aspen Plus® to predict properties of PZ/AEP/H2O/CO2, using the electrolyte-Nonrandom Two-Liquid (eNRTL) activity coefficient model. A sequential regression was performed to represent CO2 solubility, speciation, and amine volatility data over operationally significant loading and temperature ranges. The model predicts a CO2 cyclic capacity of 0.86 mol/kg (PZ + AEP + water) for 5 m PZ/2 m AEP, compared to 0.50 mol/kg for 7 m MEA and 0.86 mol/kg for 8 m PZ. The predicted heat of absorption is 75 to 85 kJ/mol CO2 in the operating loading range (0.288–0.380 mol CO2/mol alkalinity). Speciation for PZ/AEP/H2O at various CO2 loading and temperature was also predicted, from which behavior of CO2 in the amine system was proposed." @default.
- W2000975315 created "2016-06-24" @default.
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- W2000975315 date "2014-01-01" @default.
- W2000975315 modified "2023-09-25" @default.
- W2000975315 title "Thermodynamic Modeling of Aqueous Piperazine/N-(2-Aminoethyl) Piperazine for CO2 Capture" @default.
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- W2000975315 doi "https://doi.org/10.1016/j.egypro.2014.11.108" @default.
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