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Q5 Post-combustion carbon dioxide capture (PCC) process technology is used to capture greenhouse gas emissions. This technology is illustrated in the process flow diagram shown

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Q5 Post-combustion carbon dioxide capture (PCC) process technology is used to capture greenhouse gas emissions. This technology is illustrated in the process flow diagram shown below. i. What is the typical purity of the CO2 exiting from the desarber of the PCC plant? (2 marks) a) Less than 50% b) 65% c) 80% d) 98% ii. Briefly describe the PCC process and explain how this technology works to capture the carbon dioxide from a coal power plant. (7 marks) Lean solvent cooler Hot Rich solvent Condenser Knock-out - Absorber Stripper drum G steam B) Rich/Lean . heat exchanger bio Lean solvent CO2 for Storage Compression Cooling Flue gas fan iii. Where does the energy to operate the PCC plant come from, and in which part of the PCC plant is the energy mainly used? (6 marks)

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