Investigation of a combined gas-steam system with flue gas recirculation

• Autorzy: Chmielniak T. , Mońka P. , Pilarz P.

Identyfikatory

DOI

10.1515/cpe-2016-0025

• Języki publikacji: EN

Abstrakty

EN

This article presents changes in the operating parameters of a combined gas-steam cycle with a CO2 capture installation and flue gas recirculation. Parametric equations are solved in a purpose-built mathematical model of the system using the Ebsilon Professional code. Recirculated flue gases from the heat recovery boiler outlet, after being cooled and dried, are fed together with primary air into the mixer and then into the gas turbine compressor. This leads to an increase in carbon dioxide concentration in the flue gases fed into the CO2 capture installation from 7.12 to 15.7%. As a consequence, there is a reduction in the demand for heat in the form of steam extracted from the turbine for the amine solution regeneration in the CO2 capture reactor. In addition, the flue gas recirculation involves a rise in the flue gas temperature (by 18 K) at the heat recovery boiler inlet and makes it possible to produce more steam. These changes ontribute to an increase in net electricity generation efficiency by 1%. The proposed model and the obtained results of numerical simulations are useful in the analysis of combined gas-steam cycles integrated with carbon dioxide separation from flue gases.

Słowa kluczowe

EN

CCS; combined cycle; rise in CO2; content in flue gases; flue gas recirculation; modelling

PL

CCS; cykl mieszany; wzrost CO2; spaliny; recyrkulacja gazów; modelowanie

• Wydawca: Komitet Inżynierii Chemicznej i Procesowej Polskiej Akademii Nauk
• Czasopismo: Chemical and Process Engineering
• Rocznik: 2016
• Tom: Vol. 37, nr 2
• Strony: 305--316
• Opis fizyczny: Bibliogr. 9 poz., rys., tab.

Twórcy

autor

Chmielniak T.

• Silesian University of Technology, Institute of Power Engineering and Turbomachinery, ul. Konarskiego18, 44-100 Gliwice, Poland

autor

Mońka P.

• Silesian University of Technology, Institute of Power Engineering and Turbomachinery, ul. Konarskiego18, 44-100 Gliwice, Poland

autor

Pilarz P.

• Silesian University of Technology, Institute of Power Engineering and Turbomachinery, ul. Konarskiego 18, 44-100 Gliwice, Poland

Bibliografia

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• 4. Chmielniak T., Mońka P., 2014. Analysis of a gas turbine system with flue gas recirculation. 22nd Convention of Thermodynamics Engineers, Polańczyk, Poland, 23-27.09.2014 (in Polish).
• 5. Chowdhury F.A., Okabe H., Yamada H., Onoda M., Fujioka Y., 2011. Synthesis and selection of hindered new amine absorbents for CO2 capture. Energy Procedia, 4, 201-208. DOI:10.1016/j.egypro.2011.01.042.
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