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Technologies for increasing CO2 concentration in exhaust gas from natural gas-fired power production with post-combustion, amine-based CO2 capture
SINTEF Energy Research. (Energy Technology)ORCID iD: 0000-0002-6279-4446
SINTEF Energy Research.
SINTEF Energy Research.
2011 (English)In: Energy, ISSN 0360-5442, E-ISSN 1873-6785, Vol. 36, no 2, 1124-1133 p.Article in journal (Refereed) Published
Abstract [en]

Enhanced CO2 concentration in exhaust gas is regarded as a potentially effective method to reduce thehigh electrical efficiency penalty caused by CO2 chemical absorption in post-combustion capturesystems. The present work evaluates the effect of increasing CO2 concentration in the exhaust gas of gasturbine based power plant by four different methods: exhaust gas recirculation (EGR), humidification(EvGT), supplementary firing (SFC) and external firing (EFC). Efforts have been focused on the impacts oncycle efficiency, combustion, gas turbine components, and cost. The results show that the combined cyclewith EGR has the capability to change the molar fraction of CO2 with the largest range, from 3.8 mol% toat least 10 mol%, and with the highest electrical efficiency. The EvGT cycle has relatively low additionalcost impact as it does not require any bottoming cycle. The externally fired method was found to have theminimum impacts on both combustion and turbomachinery.

Place, publisher, year, edition, pages
2011. Vol. 36, no 2, 1124-1133 p.
Keyword [en]
Gas turbine cycles, Amine-based CO2 capture, Exhaust gas recirculation, Air humidification, Supplementary fired cycle, Externally fired cycle
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:mdh:diva-13349DOI: 10.1016/j.energy.2010.11.037ISI: 000288102600046Scopus ID: 2-s2.0-79551536397OAI: oai:DiVA.org:mdh-13349DiVA: diva2:459569
Note

NOTICE: this is the author’s version of a work that was accepted for publication in Energy. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Energy, [VOL 36, ISSUE 2, 2011]

Available from: 2011-11-28 Created: 2011-11-26 Last updated: 2017-12-08Bibliographically approved

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