Separation of CO2 into Cycles Based on Gas Turbines for Electric Energy Generation

The current project proposes an evaluation of techniques for capturing CO2 in thermoelectric power plants based on gas turbines, specifically referring to the impact of the insertion of a CO2 capture system through chemical absorption with an amine solution, and a compression and liquefaction unit for the CO2 captured during the performance of a combined cycle thermoelectric plant.

A brief summary of the CO2 capture techniques in thermoelectric plants that are currently being studied is presented. The text then describes the power plant and the capture by a chemical absorption system. The power plant studied has a 3x3x1 combined cycle unit commissioned with 809,6 MW of “in situ” potency. The model proposed for the system evaluated a loss of efficiency of 9.2% in the cycle, similar to amounts published previously. The cycle’s specific emission decreased from 360 gCO2/kW-hr to 72 gCO2/kW/hr, capturing 270 ton/hr of CO2 and effectively preventing [1] 213 ton/hr of CO2 from being released into the atmosphere.

Sandro Barros Ferreira* Fabiano A. dos Santos* Paula de M. Riveiro Pinto *Vinicius P. de Avellar