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Chapter 3: Capture of CO2 153 table 3.8 CO2 capture costs: existing pulverized-coal power plants using current technology. Range min max Gibbins Gibbins Chen Study Assumptions and Results Simbeck & Alstom Rao & Rao & Chen Chen Chen Singh Gibbins mcDonald et al. Rubin Rubin et al. et al. et al. et al. et al. 2000 2001 2002 2002 2003 2003 2003 2003 2005 et al. et al. et al. Reference Plant (without capture) * * * * * * super not reported super sub Boiler type (subcritical, super, ultra) sub sub sub sub sub sub Coal type (bit, sub-bit, lig) and %S sub-bit, 0.5% bit, 2.7%S sub-bit, sub-bit, sub-bit, sub-bit, 0.5% 0.5% 1.1%S 1.1%S sub sub sub-bit, sub-bit Emission control technologies none FGD none FGD FGD FGD (SO2/NOx) Reference plant size (MW) 292 434 470 470 248 248 Plant capacity factor (%) 80 67 75 75 80 76 1.1%S FGD not not not reported FGD (Capture= 80) Net plant efficiency, LHV (%) 36.2 36.2 36.6 33.1 33.1 Coal cost, LHV (US$ GJ-1) 0.98 1.30 1.25 1.25 1.20 1.20 76 91.3 80 (Capture=80) 33 37 0.98 3.07 0.90 1.00 Reference plant emission rate 0.901 0.908 0.941 0.95 1.004 1.004 (t CO2 MWh-1) 1.004 0.925 Capture Plant Design MEA MEA MEA FGD upgrade FGD Selexol IGCC (Texaco Q) repower +current steam turbine CO2 capture technology MEA MEA MEA MEA MEA MEA Other equipment included new FGD FGD New FGD FGD FGD upgrade MEA Advanced supercrit boiler retrofit KS Advanced supercrit boiler retrofit Net plant size with capture (MW) 294 255 275 275 140 282 Auxilary boiler/fuel used? (type, LHV NG. $4.51 none none none none NG. $2.59 cost) GJ-1 GJ-1 Net plant efficiency, LHV (%) 25.3 21.3 21.4 21.4 18.7 282 400 NG. $5.06 NG. none 140 400 none none 590 none AmiNE SyStEm REtROFitS tO ExiStiNG BOiLERS 2003 upgrade FGD upgrade upgrade CO2 capture system efficiency (%) 90 96 90 90 90 90 CO2 emission rate after capture (t MWh-1) 0.113 0.059 0.155 0.16 0.177 0.369 CO2 captured (Mt yr-1) 2.090 2.228 1.480 1.480 CO2 product pressure (MPa) 13.7 13.9 13.9 13.9 13.9 13.9 13.9 10.0 CCS energy requirement 43 70 71 77 50 (% more input MWh-1) 0.099 CO2 reduction per kWh (%) 87 94 84 83 82 63 63 65 63 94 38 26 11.8 11.8 15 Cost Results ** ** Cost year basis (constant dollars) 1999 n/a 2000 Fixed charge factor (%) 12.8 13.0 15.0 Reference plant TCR (US$ kW-1) 112 Capture plant TCR (US$ kW-1) 1059 1941 Incremental TCR for capture (US$ kW-1) 947 1602 2000 2000 2000 2000 2001 15.0 14.8 14.8 14.8 9.4 11.8 0 0 0 0 160 9.4 15.0 0 160 647 1941 647 1602 0 1493 1493 21 62.2 41.2 Reference plant COE (uS$ mWh-1) 18.8 18.0 Capture plant COE (uS$ mWh-1) 54.3 70.4 incremental COE for capture 35.5 61.7 52.4 (uS$ mWh-1) 837 647 654 % increase in capital cost (over ref. plant) 150 149 291 31 56 45 73 115 96 196 % increase in COE (over ref. plant) 189 291 271 225 149 203 Cost of CO2 captured (US$/tCO2) 35 42 Cost of CO2 avoided (US$/tCO2) 45 73 67 Capture cost confidence level (see Table 3.6) 31 41 56 40 59 56 48 66 55 46 837 647 654 846 1028 846 868 18.0 20.6 20.6 20.6 66.7 66.8 51.1 62.2 moderate moderate 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 and 0.90 for natural gas. **Reported capital costs increased by 15% to estimate interest during construction and other owners’ costs. reported reported 248 400 248 470 67 91 248 80 80 80 33.1 36.0 1.20 3.07 43.5 3.07 43.5 3.07 1.20 1.004 GJ-1 $3.79 GJ-1 19 25 31.5 34.5 32.6 90 24.0 90 90 90 96 0.06 0.37 1.48 2.66 10 14 43 77 0.369 0.324 1.480 2.664 3.684 10.0 10.0 14.5 480 480 1282 1170 802 690 26.0 18 26 27.0 27.0 65.0 51 70 58.0 53.0 48.7 46.2 30.6 41.7 33.2 39.0 31 62 31.0 26.0 2006 2006 REPOWERiNG + CO2 CAPtuREPDF Image | CARBON DIOXIDE CAPTURE AND STORAGE
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