Theoretical assessment of integration of CCS in the Mexican electrical sector
Por:
Pérez Sánchez J., Aguillón Martínez J.E., Mazur Czerwiec Z., Zavala Guzmán A.M.
Publicada:
15 ene 2019
Resumen:
This research evaluates the current most advanced and proven Gas Turbine
(GT) technologies in a 1 x 1 scheme (400 MW on average) for their
application in CO2 capture schemes. It has been demonstrated that the
minimum energy required for the separation of CO2 is higher in a Natural
Gas Combined Cycle (NGCC) than in a coal-fired power plant. Therefore,
existing schemes were evaluated to assess the increased CO2 content in
the Exhaust Gases (EG) for a NGCC in order to help reduce the energy
penalty and the investment cost in CO2 capture systems. The schemes
analyzed were: Exhaust Gas Recirculation (EGR), Evaporative Gas Turbine
(EvGT), Supplementary Firing Combustion (SFC), External Firing
combustion (EFC) and alternating systems with Selective Exhaust Gas
Recycle (S-EGR) and hybridization. The most common GTs used in Mexico:
Mitsubishi (15%), Siemens (41%) and General Electric (GE) (44%)
including M - 501 GAC, SGT6-8000H and GE7HA.01 models were evaluated in
Thermoflex 26 (R). For these, Levelized Costs of Electricity (LCOE) of
31.46, 31.18 and 31.05 USD/MWh, respectively, were obtained. GE offers
the lowest LCOE and the EGR system presented the lowest energy penalty
when the CO2 capture system was modeled in HYSYS V8.6 (R).
Implementation of EGR helped to improve the energy efficiency of the
NGCC and increased the content of CO2 from 4.2 to 7.1 mol% at 40%EGR.
Similarly, EGR helped to reduce the LCOE in the integrated system with
CO2 Capture by 10 USD/MWh. (C) 2018 Elsevier Ltd. All rights reserved.
Filiaciones:
Pérez Sánchez J.:
Univ Nacl Autonoma Mexico, Torre Ingn, Piso 1,Ala Sur,Cubiculo 3,Ave Univ 3000, Mexico City 04510, DF, Mexico
Universidad Nacional Autónoma de México, Av. Universidad No 3000, Ciudad Universitaria, Torre de Ingeniería, Piso 1, Ala Sur, Cubículo 3, Coyoacán, México D.F, 04510, Mexico
Aguillón Martínez J.E.:
Univ Nacl Autonoma Mexico, Torre Ingn, Piso 1,Ala Sur,Cubiculo 3,Ave Univ 3000, Mexico City 04510, DF, Mexico
Universidad Nacional Autónoma de México, Av. Universidad No 3000, Ciudad Universitaria, Torre de Ingeniería, Piso 1, Ala Sur, Cubículo 3, Coyoacán, México D.F, 04510, Mexico
Mazur Czerwiec Z.:
Natl Inst Elect & Clean Energies, Ave Reforma 113,Col Palmira, Cuernavaca 62490, Mor, Mexico
National Institute of Electricity and Clean Energies, Av. Reforma No. 113, Col Palmira, Mor. C.P., Cuernavaca, 62490, Mexico
Zavala Guzmán A.M.:
Natl Inst Elect & Clean Energies, Ave Reforma 113,Col Palmira, Cuernavaca 62490, Mor, Mexico
National Institute of Electricity and Clean Energies, Av. Reforma No. 113, Col Palmira, Mor. C.P., Cuernavaca, 62490, Mexico
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