The thermodynamic analysis of CO2 separation installation in a supercritical 600 MW coal unit
Analiza termodynamiczna instalacji separacji CO2 w supernadkrytycznym bloku węglowym o mocy 600 MW
Sylwia Berdowska, Anna Skorek-Osikowska
Streszczenie
In this paper the influence of the CO2 separation installation on the efficiency of power plant was analyzed.
For the calculations a coal unit with the electric power rating at 600 MW with pulverized bed boiler working in oxycombustion
technology was adopted. This coal plant achieves a gross efficiency equal to 48.92%, and resulting flue gases
contain 79% of CO2. In order to purify and increase the concentration of carbon dioxide in the exhaust gas a drying and
purification installation based on physical separation technology was proposed. The prepared flue gas is compressed to the
pressure required for transport, assumed at 150 bar. Electric power needed to drive machines in the CO2 capture and
compression installation is 45.23 MW and causes the efficiency decrease of the plant by 3.96 percentage points.
For the calculations a coal unit with the electric power rating at 600 MW with pulverized bed boiler working in oxycombustion
technology was adopted. This coal plant achieves a gross efficiency equal to 48.92%, and resulting flue gases
contain 79% of CO2. In order to purify and increase the concentration of carbon dioxide in the exhaust gas a drying and
purification installation based on physical separation technology was proposed. The prepared flue gas is compressed to the
pressure required for transport, assumed at 150 bar. Electric power needed to drive machines in the CO2 capture and
compression installation is 45.23 MW and causes the efficiency decrease of the plant by 3.96 percentage points.