Integrated Gasification Combined Cycle (IGCC) power plants represent one of the most appealing options to produce electricity from coal with interesting plant efficiency and low environmental impact. Usually, these power plants are equipped with oxygen-blown gasifiers which have two main advantages with respect to air-blown reactors: high values of cold gas efficiency and an N2 deprived syngas. The aim of this paper is to compare three different oxygen production technologies for oxidant supply to the gasification island. An IGCC power plant with pre-combustion CO2 capture has been modelled considering: (i) a cryogenic distillation Air Separation Unit (ASU) based on a pumped liquid oxygen cycle; (ii) an innovative Oxygen Transport Membrane (OTM) based oxygen production technology integrated in the power island; (iii) an innovative oxygen separation system based on open gradient magnetic field (magn-AS, magnetic air separation). An overall heat and material balance has been estimated to evaluate plant performances and compare the three options; our thermodynamic analysis shows a promising improvement of the overall plant performance for the IGCC power plants equipped with these innovative technologies nonetheless several key issues deserve a more in depth analysis to assess the real potentialities of these technologies.

Vellini, M., Gambini, M., Carbone, M. (2016). Advanced power plants with very low CO2 emissions. In 6th International Symposium on Energy Challenges & Mechanics (ISECM), 14-18th August 2016, Inverness, Scotland, United Kingdom.

Advanced power plants with very low CO2 emissions

Vellini M.;Gambini M.;
2016-01-01

Abstract

Integrated Gasification Combined Cycle (IGCC) power plants represent one of the most appealing options to produce electricity from coal with interesting plant efficiency and low environmental impact. Usually, these power plants are equipped with oxygen-blown gasifiers which have two main advantages with respect to air-blown reactors: high values of cold gas efficiency and an N2 deprived syngas. The aim of this paper is to compare three different oxygen production technologies for oxidant supply to the gasification island. An IGCC power plant with pre-combustion CO2 capture has been modelled considering: (i) a cryogenic distillation Air Separation Unit (ASU) based on a pumped liquid oxygen cycle; (ii) an innovative Oxygen Transport Membrane (OTM) based oxygen production technology integrated in the power island; (iii) an innovative oxygen separation system based on open gradient magnetic field (magn-AS, magnetic air separation). An overall heat and material balance has been estimated to evaluate plant performances and compare the three options; our thermodynamic analysis shows a promising improvement of the overall plant performance for the IGCC power plants equipped with these innovative technologies nonetheless several key issues deserve a more in depth analysis to assess the real potentialities of these technologies.
6th International Symposium on Energy Challenges & Mechanics (ISECM), 14-18th August 2016, Inverness, Scotland, United Kingdom
Rilevanza internazionale
2016
2016
Settore ING-IND/09 - SISTEMI PER L'ENERGIA E L'AMBIENTE
English
Intervento a convegno
Vellini, M., Gambini, M., Carbone, M. (2016). Advanced power plants with very low CO2 emissions. In 6th International Symposium on Energy Challenges & Mechanics (ISECM), 14-18th August 2016, Inverness, Scotland, United Kingdom.
Vellini, M; Gambini, M; Carbone, M
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/201692
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