Performance analysis of integrated gasification combined cycle considering turbine modification

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dc.contributor.author Kim, Y.S.
dc.contributor.author Park, S.K.
dc.contributor.author Lee, J.J.
dc.contributor.author Kim, T.S.
dc.contributor.author Sohn, J.L.
dc.date.accessioned 2015-04-21T12:46:51Z
dc.date.available 2015-04-21T12:46:51Z
dc.date.issued 2010
dc.description.abstract Paper presented at the 7th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Turkey, 19-21 July, 2010. en_ZA
dc.description.abstract In IGCC plants, the operating environment of the gas turbine changes from its designed condition due to its integration with the gasifier block, especially with the air separation unit. The theoretical IGCC power and efficiency enhances as the integration degree becomes lower. However, low integration degree designs would reduce the compressor surge margin and cause overheating of turbine metal considerably. The main reason for these problems is that turbine inlet gas flow increases considerably because the heating value of the syngas is much lower than that of natural gas and also additional air is supplied by the auxiliary compressor. The problems can be mitigated by modulating gas turbine operating parameters. However, the problems can better be overcome through modifications of gas turbine components. This study analyzed the modification of the turbine to accommodate the increased turbine flow. The entire IGCC plant was modeled and a full off­-design operation of the gas turbine was simulated. The performances of the IGCC plant with and without the turbine modification were compared. The limitations of the compressor surge margin and the turbine blade temperature were applied in both cases. The turbine modification enables a larger net power output in the low integration degree regime. The net plant efficiency does not depend very much on the integration degree.
dc.description.librarian ej2015 en_ZA
dc.format.extent 6 pages en_ZA
dc.format.medium PDF en_ZA
dc.identifier.citation Kim, YS, Park, SK, Lee, JJ, Kim, TS & Sohn, JL 2010, 'Performance analysis of integrated gasification combined cycle considering turbine modification ', Paper presented to the 7th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Turkey, 19-21 July 2010. en_ZA
dc.identifier.uri http://hdl.handle.net/2263/44438
dc.language.iso en en_ZA
dc.publisher International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics en_ZA
dc.relation.ispartof HEFAT 2010 en_US
dc.rights University of Pretoria en_ZA
dc.subject Integrated gasification en_ZA
dc.subject Turbine modification en_ZA
dc.subject Turbine inlet gas en_ZA
dc.title Performance analysis of integrated gasification combined cycle considering turbine modification en_ZA
dc.type Presentation en_ZA


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