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Development of a Pressure Swing Adsorption (PSA) Cycle for CO2 Capture

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Development of a Pressure Swing Adsorption (PSA) Cycle for CO2 Capture ( development-pressure-swing-adsorption-psa-cycle-co2-capture )

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of the CO2. A higher value of the purge to feed ratio physically means large flow rates exiting from the LR step, which increases the energy consumption of the PSA process. Pressure ratio also had a significant effect on the CO2 recovery and CO2 purity in the heavy product. Operating at a deeper vacuum resulted in greater CO2 desorption and better bed regeneration. As the CnD pressure (PL) was increased, i.e. pressure ratio decreased the CO2 purity and CO2 recovery both were decreased. The CO2 recovery was decreased when operated at lower pressure ratio causing the energy consumption increase. The effect of temperature and feed concentration was also studies. The CO2 recovery and CO2 purity in the heavy product increased by increasing the temperature. The energy consumption also increased upon increasing temperature. Three different feed concentration was used 15.9%, 14.59% and 10%. The CO2 recovery and CO2 purity in the heavy product was increased with increasing CO2 concentration in the feed. A validated DAPS was used to predict a number of experimental results. The DAPS was used to predict the experimental results for different process conditions using equilibrium isotherms of the individual components measured at three different temperatures independently using micromeritics ASAP 2010 and the mass transfer coefficients determined using the single gas cycling using a rapid pressure swing adsorption apparatus. The model successfully predicts the pressure and temperature profiles and performance of each experiment. DAPS successfully capture the location of the concentration front in the bed without any adjustable parameters. The agreement between the experiment and simulation results also validate the single component adsorption isotherm and mass transfer coefficient measure independently. The reason simulation predicted temperature profiles did not match perfectly with the experiment was 37

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Development of a Pressure Swing Adsorption (PSA) Cycle for CO2 Capture

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