Maintaining a neutral water balance in a 450 MWe NGCC-CCS power system with post-combustion carbon dioxide capture aimed at offshore operation |
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| Authors: | Hanne Marie Kvamsdal Jens Hetland Geir Haugen Hallvard F. Svendsen Fredrik Major Vemund Kårstad Göran Tjellander |
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| Affiliation: | 1. SINTEF Materials and Chemistry, NO-7465 Trondheim, Norway;2. SINTEF Energy Research, NO-7465 Trondheim, Norway;3. Norwegian University of Science and Technology, NO-7491 Trondheim, Norway;4. Sevan Marine ASA, Kittelsbuktveien 5, NO-4836 Arendal, Norway;5. SIEMENS Oil & Gas Offshore AS, P.O. Box 5, NO-0613 Oslo, Norway;6. SIEMENS Industrial Turbomachinery AB, SE-61283 Finspong, Sweden;1. EDF R&D, 6 quai Watier, F-78401 Chatou, France;2. E.ON New Build and Technology, The Technology Centre, Ratcliffe-on-Soar, Nottingham NG11 0EE, United Kingdom;3. SINTEF Materials and Chemistry, Richard Birkelandsvei 2b, Trondheim, Norway;1. Department of Chemical Engineering, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway;2. SINTEF, Materials and Chemistry, P.B. 4760, NO-7465 Trondheim, Norway;3. SINTEF Ocean AS, Dep. Environmental Technology Brattørkaia 17C, NO-7010 Trondheim, Norway;1. Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul, Republic of Korea;2. AVEVA Korea Ltd., Seoul, Republic of Korea;1. TNO, Leeghwaterstraat 46, 2628CA Delft, The Netherlands;2. SINTEF Materials and Chemistry, Postboks 4760 SLUPPEN, 7465 Trondheim, Norway;3. Process and Energy Department, Delft University of Technology, Leeghwaterstraat 39, 2628CB Delft, The Netherlands;1. Energy Research Center, Lehigh University, 117 ATLSS Drive, Bethlehem, PA, 18015, United States;2. Advanced Cooling Technology, Inc., 1046 New Holland Ave Building 2, Lancaster, PA, 17601, United States |
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| Abstract: | A post-combustion CO2 capture process intended for offshore operations has been designed and optimised for integration with a natural gas-fired power plant on board a floating structure developed by the Norway-based company Sevan Marine ASA—designated Sevan GTW (gas-to-wire). The concept is constrained by the structure of the floater carrying a SIEMENS modular power system rated at 450 MWe, with a capture rate of 90% and CO2 compression (1.47 Mtpa) for pipeline pressure at 12 MPa. A net efficiency of 45% (based on a lower heating value) is estimated for the system with CO2 capture, thus suggesting that the post-combustion CO2 capture system is accountable for a fuel penalty of nine percentage points.The rationale behind the technology selection is the urgency of replacing the dispersed aero-derivative gas turbines which power the offshore oil and gas production units in Norwegian waters with near-zero emission power.As (inherently) fresh water usually constitutes a limiting factor in sea operations, efforts are made to obtain a neutral water balance to obtain an optimal design. This is primarily achieved by controlling the cleaned flue gas temperature at the top of the absorber column. |
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