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5.3 Case Studies and Computational Results 110 100 90 80 70 60 50 40 30 86 88 90 92 94 96 98 CO recovery (%) 2 Figure 5.8: Power-recovery trade-off curve at 90% CO2 purity for case II by-step approach with 10 spatial finite volumes and the full-cycle approach with 40 finite volumes are reasonably close to the ones obtained from AMPL. As observed in the previous case, the step-by-step approach verification is closer to the AMPL solution. However, the full-cycle verification depicts more accurate comparison since it compares both spatial and temporal accuracy for the entire cycle. Figure 5.8 shows the trade-off curve between power consumption and CO2 recovery. As in the previous case, the curve is constructed by varying the lower bound on CO2 recovery, while keeping the CO2 purity, feed flux and cycle time fixed to their respective optimal values of 90%, 96.61 kgmol m−2 hr−1 and 424.74 sec, and solving the superstructure NLP repeatedly. As a result, each point on the curve represents the minimum power consumption that can be obtained for the corresponding CO2 recovery. As expected, the curve shows that the power requirements increase if a high-recovery separation is desired. However, the increase remains reasonable even for a CO2 recovery as high as 98%. Chapter 5. Superstructure Case Study: Pre-combustion CO2 Capture 92 Power consumption (kWh/tonne CO ) 2PDF Image | Design and Operation of Pressure Swing Adsorption Processes
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CO2 Organic Rankine Cycle Experimenter Platform The supercritical CO2 phase change system is both a heat pump and organic rankine cycle which can be used for those purposes and as a supercritical extractor for advanced subcritical and supercritical extraction technology. Uses include producing nanoparticles, precious metal CO2 extraction, lithium battery recycling, and other applications... More Info
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