Transcript Slide 1
g Moving to Advanced Supercritical Plant & Capture-Ready Measures Dr P. Mahi; P. Napier-Moore Mott MacDonald g Advanced Supercritical Plants Temperature (°C) Pressure (bar) (MPa) 538 167 16 Supercritical 540 – 566 220 – 240 25 Advanced Supercritical 580 - 620 270 30 Subcritical Advanced Supercritical Plants (500 MW) Coal Subcritical Supercritical Advanced Supercritical Gross Efficiency (LHV) 41.3 43.2 45.9 Net Efficiency (LHV) 38.8 40.6 43.2 Gross Efficiency (HHV) 39.2 41.0 43.5 Net Efficiency (HHV) 36.8 38.5 40.9 Gross Efficiency (LHV) 41.3 43.2 46.0 Net Efficiency (LHV) 38.8 40.6 43.2 Gross Efficiency (HHV) 39.6 41.4 44.0 Net Efficiency (HHV) 37.2 38.9 41.4 Singrauli Coal Mount Arthur Coal g Advanced Supercritical Plants (500 MW) CO2 emissions Subcritical Supercritical Advanced Supercritical 425 406 382 0 4.5 8.0 436 417 392 0 4.8 10.0 Singrauli Coal t/h % reduction Mount Arthur Coal t/h % reduction g Supercritical Plants Last 10 Years Total 37.6 Others China 13.3 Korea 13.5 Germany Russia Japan USA 87 Total Capacity (GW) Number of Units 23 24 8.5 Others Number of Units 9.9 China 15 13.5 Korea 14.8 31 68.2 8.7 Germany 49.2 128 Russia 108 106.6 156 Japan Total Capacity (GW) 17 24 12 2.7 4 20.9 26 g Advanced Supercritical Plant / Location Owner Year Completed Steam Temp. (°C) Pressure (MPa) Power (MW) Fuel 2007 600/600 26.3 1000 Coal Waigaoqiao III, China SMEPC 2005 600/600 27 2 x 1000 Coal Avedore II, Denmark Energy E2 2001 582/600 30 415 Coal, gas Nordjyllandsvaer Ket 3, Denmark Elsam 1998 582/580 29 415 Coal, gas Skaevbaerket, Denmark Elsam 1997 582/580 29 415 gas Huaneng Yuhuan, China g Advanced Supercritical Plants – Costs Coal Unit (500 MW) Subcritical Supercritical Advanced Supercritical Singrauli Coal Capex INR million 28 000 29 586 30 391 Capex INR /kWe 56 004 59 175 60 783 Capex US/kWe 1 223 1293 1 328 Capex INR million 26 698 28 171 28 931 Capex INR /kWe 53 395 56 347 57 862 Capex US/kWe 1 167 1 231 1 264 Mount Arthur Coal O&M Costs - Similar - In India; likely to be higher g Implementation Issues Technology Issues – waterwall craking – negative flow characteristic – slagging Availability of skilled operating staff Coal quality and boiler performance Environmental benefits Socio-economic benefits g Incentives Carbon related revenue can make a substantial difference to the economics of supercritical plants and most notably to the economics of advanced supercritical units Key issue is carbon price risk after 2012. g Post Combustion Capture-Ready Essential Measures – focussed on Plant Site Essential measures, focussed on the plant site, include: Land area and layout able to accommodate: – the capture equipment, new pipelines, expanded utilities and additional generation units Provisions for new pipework in the Water-Steam-Condensate cycle – allowing for heat integration Design of the steam cycle to be compatible with the likely steam extraction requirements of the capture unit – inclusion of off-take tee at IP/LP crossover pipe, with target crossover pressure of e.g. 3-4 bar(a) for amines Allow space for addition/upgrade of FGD, to meet flue gas purity requirements, as applicable, of CO2 capture Route to CO2 storage that is economically competitive on a global stage (€/tCO2 basis) g Post Combustion Capture-Ready Optional Measures – Up to CO2 Storage Optional measures – first tier – Identification of potential sequestration sites and preliminary geological investigations to screen these. – Pipeline route determined, where CO2 exported by pipeline rather than ship. – Installation of FGD that can readily be upgraded to meet flue gas purity required Optional measures – second tier – Sequestration site test wells, integrity studies, access rights and permitting – Pipeline route land ownership, way leaves and permitting of CO2 transportation – Increase on-site utility capacity – including compressed air, cooling water treatment and electrical distribution. – Pre-investment in up-rated base plant e.g. FGD, ID fans g Capture-Ready Plant Key Issues Capital cost impact within power plant relatively low Need for consideration of CCS in national-level generation planning & site selection Need for review of planning and regulatory barriers for CO2 transport and storage chain? – Potentially on critical path to retrofit Possible need for outside support with capture-ready design to mitigate risk of delays to design process, while still ensuring that barriers to CCS are removed Mott MacDonald’s current studies of advanced supercritical plant and capture-ready plant will provide analysis tailored to India – for the UMPPs www.mottmac.com