Scope of this section E is to summarize the main technical information of reference cases of leading CO2 capture processes, which will then be used to make an outline assessment of their operating flexibility.
Most of the information included in this section is derived from the IEAreport “Water usage and loss Analysis in Power plants without and with CO2 capture”, completed by in year 2010, which already identified reference plants for leading technologies. Remaining information, relevant to the post-combustion capture process from natural gas-fuelled combined cycles, are partially taken from FW in-house information and partially from the IEA Report PH4/33, Nov 2004, Improvement in Power generation with post Combustion capture of CO2.
For each CO2 capture process, the main technical and economical information like process description, utility consumption and performance data, investment and operating costs are collected in dedicated sub-sections, as listed below:
|•||Section E.1:||Natural Gas Combined Cycle (NGCC) power plant, with post-combustion capture of the carbon dioxide.|
|•||Section E.2:||IntegratedCombined Cycle (IGCC) power plant, fed with with pre-combustion capture of the produced carbon dioxide.|
|•||Section E.3:||Ultra Super Critical(USC-PC) power plant, fed with bituminous coal and with post-combustion capture of the produced carbon dioxide.|
|•||Section E.4:||USC-PC oxy-fuel plant, fed with bituminous coal and with cryogenic purification of the flue gases for carbon dioxide removal.|
For the combined cycle alternatives, the design capacity of the plant is fixed to match the appetite (thermal requirement) of two F-class gas turbines.
For the boiler-based alternatives (USC PC and Oxy-combustion plant), the reference case design capacity is selected by referring to a boiler size that could be currently engineered and built, corresponding to approximately 750-1000 MWe gross power production.
The economic data of each case have been derived from the data contained in the reference studies, by currency adjustment and cost level escalation (further details are shown in Section B).