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1 Journal of Power Technologies

1 2013

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The thermodynamic and economic analysis of a 600 MW oxy-fired coal unit with membrane-cryogenic oxygen production system and CO2 capture installation

Berdowska S., Skorek-Osikowska A.

Journal of Power Technologies

2013

Vol. 93, nr 5

271--278

In this paper a 600 MW coal unit with pulverized bed boiler working in oxy-combustion technology with a hybrid, membrane-cryogenic oxygen separation installation and carbon capture and storage system was analyzed. Membrane-cryogenic oxygen separator consists of a membrane module and two cryogenic distillation columns. Boiler works in oxy-combustion technology, therefore resulting flue gases contain 79% of CO2. In order to increase the concentration of carbon dioxide in the exhaust gas to the value of 95% an installation based on physical separation technology was used. In this work main results of energy intensity of each system are presented. The economic analysis of coal power plant with the use of Break Even Point method was realized. In order to verify the profitability of building of coal unit with membrane-cryogenic oxygen separation installation the analysis of sensitivity in dependence of investment costs and coal price was performed.