Simulation of a NGCC Power Generation Plant for the Production of Electricity from CO2 Emissions Part II: SNGCC Power Plant

Energy Efficiency of a Simulated Synthetic Natural Gas Combined Cycle (SNGCC)

“…A simulation was performed in order to find the suitable percentage of the recycled flue gas for optimum conditions of the carbon capture unit of the power plant. Our results showed that with a recycling 37% of the flue gas, the concentration of CO 2 and O 2 of the flue gas entering the CO 2 capture unit were respectively equal to 10.2% [6]. and 2.01%.…”

“…Generator (ST), condenser, and pump to form a Rankine cycle for electricity production. Water (9) enters the HRSG at high pressure and the resulting steam (6) produces electricity in the steam turbine generator (ST). The saturated steam (7) leaving the steam turbine is first condensed ( 8) and then its pressure increased ( 9) before returning to the HRSG.…”

“…The feed of the methanation reactor is the recycled stream of carbon dioxide of a CO 2 capture unit treating the flue gas of the SNGCC power plant [5] [6]. As shown in Figure 1, the simplified SNGCC (Synthetic Natural Gas Combined Cycle) power plant is divided into eight different control volumes: (a) Air Compressor, (b) Combustor (CC), (c) Combustion Turbine Generator (GT), (d) Steam Turbine Generator (ST), (e) Heat Recovery Steam Generator (HRSG), (f) Condenser, (g) Pump and (h) Methanation reactor [6].…”

“…and 2.01%. It was concluded that the flue gas composition with a FGR ratio of 0.37 was suitable for effective absorption of carbon dioxide by amine solutions [6]. Since energy efficiency is the key parameter of energy conversion systems, the main objective of the third and last part of this investigation is to analyze the impact of flue gas recirculation on the different energy inputs and outputs of the SNGCC power plant and on its overall efficiency.…”