Evaluation of different CHP options for refinery integration in the context of a low carbon future |
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| Authors: | Christian Solli Rahul Anantharaman Anders H. Strømman Xiangping Zhang Edgar G. Hertwich |
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| Affiliation: | 1. Industrial Ecology Program, Norwegian University of Science and Technology, Norway;2. Department of Energy and Process Engineering, Norwegian University of Science and Technology, Norway;1. Oil Company RussNeft, 69, Pyatnitskaya st., Moscow, Russia;2. National Research University Higher School of Economics, Russian Federation;3. Lomonosov Moscow State University, Russia;4. National Research Nuclear University “MEPhI” (Moscow Engineering Physics Institute), 31, Kashirskoe Highway, Moscow, Russia;5. International Centre for Nuclear Safety, Minatom of Russia, 2/8, Krasnoselskaya M. Street, Moscow, Russia;6. Corporate Finance Department, Summa Group, Russia;1. University of Cagliari, Dept. of Mechanical, Chemical and Materials Engineering, via Marengo, 2, 09123 Cagliari, Italy;2. Sotacarbo S.p.A., Grande Miniera di Serbariu, 09013 Carbonia, Italy |
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| Abstract: | This study presents a comparison of different concepts for delivering combined heat and power (CHP) to a refinery in Norway. A reference case of producing high pressure steam from natural gas in boilers and electricity in a combined cycle power plant, is compared to a: (1) natural gas fueled CHP without any CO2 capture; (2) hydrogen fueled CHP with hydrogen produced from steam methane reforming (SMR); (3) hydrogen fueled CHP with hydrogen produced from autothermal reforming (ATR); and finally (4) natural gas fueled CHP with postcombustion CO2 removal. The options are compared on the basis of first law efficiency, emissions of CO2 and a simplified cash flow evaluation. Results show that in terms of efficiency the standard natural gas fueled CHP performs better than the reference case as well as the options with carbon capture. The low carbon options in turn offer lower emissions of greenhouse gases while maintaining the same efficiency as the reference case. The cash flow analysis shows that for any option, a certain mix of prices is required to produce a positive cash flow. As expected, the relationship between natural gas price and electricity price affects all options. Also the value of heat and CO2 emissions plays an important role. |
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