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Chapter 3: Capture of CO2 151 table 3.7 CO2 capture costs: new pulverized-coal power plants using current technology. Range Rao & Stobbs & Clark Rubin Study Assumptions and Results et al. Reference Plant (without capture) * * * * Boiler type (subcritical, super, ultra) Coal type (bit, sub-bit, lig) and %S Emission control technologies (SO2/NOx) super bit, 2.5% S FGD, SCR ultra bit, 2.5% S FGD, SCR ultra bit, 1% S FGD, SCR ultra bit, 1% S FGD, SCR ultra bit, 1% S FGD, SCR super bit, 2.1% S FGD, SCR subcritical bit, 2.5%S FGD subcritical sub-bit, 0.5%S FGD, SCR super lignite FGD, SCR, LoTOx Reference plant net output (MW) Plant capacity factor (%) Net plant efficiency, LHV (%) Coal cost, LHV (US$ GJ-1) Reference plant emission rate (t CO2 MWh-1) 462 65 42.2 1.29 0.774 462 424 Capture Plant Design MEA 329 30.1 90 0.108 MEA MEA MEA CO2 capture technology Net plant output with capture (MW) Net plant efficiency, LHV (%) CO2 capture system efficiency (%) CO2 emission rate after capture (t MWh-1) CO2 captured (Mt yr-1) 367 408 666 676 492 329 32.5 34.9 34.8 35.4 31.1 30 90 85 87.5 90 90 85 0.101 0.145 0.117 0.092 0.107 0.09 676 35 90 0.15 283 27.7 95 326 311.0 25.4 31.8 90 95 CO2 product pressure (MPa) CCS energy requirement (% more input MWh-1) CO2 reduction per kWh (%) 8.4 40 8.4 38 13.7 11.0 11.0 13.9 28 26 24 31 8 14 24 40 10.3 13.9 13.9 40 42 36 Cost Results 86 86 81 84 88 87 81 88 93 86 93 Cost year basis (constant dollars) Fixed charge factor (%) Reference plant TCR (US$ kW-1) Capture plant TCR (US$ kW-1) Incremental TCR for capture (US$ kW-1) 2000 15.5 1281 2219 938 2000 15.5 1161 1943 782 *** ** ** 2000 2004 2004 2002 11.0 15.5 1161 1486 1894 2578 575 1092 *** 2002 2000 2003 Reference plant COE (uS$ mWh1) 51.5 51.0 42.9 43.9 42.8 46.1 43 52 42.3 49.2 44.5 Capture plant COE (uS$ mWh1) incremental COE for capture (uS$ mWh1) % increase in capital cost (over ref. plant) 85.6 34.1 82.4 31.4 70.9 62.4 63.0 74.1 28 18.5 20.2 28 62 86 18 34 76.6 87.0 74.3 37.8 37.8 29.8 % increase in COE (over ref. plant) Cost of CO2 captured (US$/tCO2) Cost of CO2 avoided (US$/tCO2) Capture cost confidence level (see 66 62 65 42 47 61 81 77 67 Parsons 2002b Parsons 2002b Simbeck iEA GHG iEA GHG Rubin NEtL 2002 1.830 2.350 2.360 4.061 4.168 3.102 1.83 4.17 2.346 2.580 2.795 73 67 74 44 59 61 44 74 42 66 87 75 72 35 51 28 49 34 23 43 29 24 29 31 40 23 35 29 51 31 31 26 43 47 36 506 65 44.8 520 80 44.5 0.98 758 85 44.0 1.50 754 85 43.7 1.50 524 462 75 65 40.9 41 1.25 0.98 758 85 45 1.50 0.81 397 85 75 90 2002 2004 2004 2005 min SuPERCRitiCAL uNitS / BitumiNOuS COALS max 2002 2005 SuBCRit uNitS / LOW RANK COALS 0.736 0.76 0.743 0.747 0.811 0.74 MEA MEA MEA KS-1 MEA 1.03 1.25 0.88 0.835 0.941 0.883 12.7 11.0 1486 1319 2578 1894 1092 575 11.0 14.8 1265 1205 2007 1936 742 731 14.8 15.0 1268 1236 1891 2373 2163 3252 1105 927 1361 moderate moderate Table 3.6) Notes: All costs in this table are for capture only and do not include the costs of CO2 transport and storage; see Chapter 8 for total CCS costs. * Reported HHV values converted to LHV assuming LHV/HHV = 0.96 for coal. ** Reported capital costs increased by 8% to include interest during construction. ***Reported capital costs increased by 15% to estimate interest during construction and other owners’ costs. 38.9 36.1 43.4 0.059 0.133 0.060PDF Image | CARBON DIOXIDE CAPTURE AND STORAGE
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