Lignite‐fired air‐blown IGCC systems with pre‐combustion CO2 capture
Detailed analyses based on mass and energy balances of lignite‐fired air‐blown gasification‐based combined cycles with CO 2 pre‐combustion capture are presented and discussed in this work. The thermodynamic assessment is carried out with a proprietary code integrated with Aspen Plus ® to carefully s...
Ausführliche Beschreibung
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| Autor*in: |
Giuffrida, Antonio [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2016 |
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| Rechteinformationen: |
Nutzungsrecht: Copyright © 2016 John Wiley & Sons, Ltd. |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: International journal of energy research - London [u.a.] : Wiley-Intersience, 1977, 40(2016), 6, Seite 831-845 |
|---|---|
| Übergeordnetes Werk: |
volume:40 ; year:2016 ; number:6 ; pages:831-845 |
| Links: |
|---|
| DOI / URN: |
10.1002/er.3488 |
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OLC1973772337 |
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| 520 | |a Detailed analyses based on mass and energy balances of lignite‐fired air‐blown gasification‐based combined cycles with CO 2 pre‐combustion capture are presented and discussed in this work. The thermodynamic assessment is carried out with a proprietary code integrated with Aspen Plus ® to carefully simulate the selective removal of both H 2 S and CO 2 in the acid gas removal station. The work focuses on power plants with two combustion turbines, with lower and higher turbine inlet temperatures, respectively, as topping cycle. A high‐moisture lignite, partially dried before feeding the air‐blown gasification system, is used as fuel input. Because the raw lignite presents a very low amount of sulfur, a particular technique consisting of an acid gas recycle to the absorber, is adopted to fulfill the requirements related to the presence of H 2 S in the stream to the Claus plant and in the CO 2 ‐rich stream to storage. Despite the operation of the H 2 S removal section representing a significant issue, the impact on the performance of the power plant is limited. The calculations show that a significant lignite pre‐drying is necessary to achieve higher efficiency in case of CO 2 capture. In particular, considering a wide range (10–30 wt.%) of residual moisture in the dried lignite, higher heating value (HHV) efficiency presents a decreasing trend, with maximum values of 35.15% and 37.12% depending on the type of the combustion turbine, even though the higher the residual moisture in the dried coal, the lower the extraction of steam from the heat recovery steam cycle. On the other hand, introducing the specific primary energy consumption for CO 2 avoided (SPECCA) as a measure of the energy cost related to CO 2 capture, lower values were predicted when gasifying dried lignite with higher residual moisture content. In particular, a SPECCA value as low as 2.69 MJ/kg CO2 was calculated when gasifying lignite with the highest (30 wt.%) residual moisture content in a power plant with the advanced combustion turbine. Ultimately, focusing on the power plants with the advanced combustion turbine, air‐blown gasification of lignite brings about a reduction in HHV efficiency equal to almost 1.5 to 2.8 percentage points, depending on the residual moisture in the dried lignite, if compared with similar cases where bituminous coal is used as fuel input. Copyright © 2016 John Wiley & Sons, Ltd. Detailed analyses of lignite‐fired air‐blown gasification‐based combined cycles with CO 2 capture are presented and discussed. A significant lignite pre‐drying is necessary to achieve higher performance, with HHV efficiency up to 37.12%. However, if compared to similar cases where bituminous coal is used as fuel input, air‐blown gasification of lignite brings about a reduction in HHV efficiency equal to almost 1.5 to 2.8 percentage points, depending on the residual moisture in the dried lignite. | ||
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10.1002/er.3488 doi PQ20160430 (DE-627)OLC1973772337 (DE-599)GBVOLC1973772337 (PRQ)p1292-c7574a83f480809305d0adf188c799e513286fe4d2f8372a303bc038277c98553 (KEY)0059736820160000040000600831lignitefiredairblownigccsystemswithprecombustionco DE-627 ger DE-627 rakwb eng 620 DNB 50.70 bkl Giuffrida, Antonio verfasserin aut Lignite‐fired air‐blown IGCC systems with pre‐combustion CO2 capture 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Detailed analyses based on mass and energy balances of lignite‐fired air‐blown gasification‐based combined cycles with CO 2 pre‐combustion capture are presented and discussed in this work. The thermodynamic assessment is carried out with a proprietary code integrated with Aspen Plus ® to carefully simulate the selective removal of both H 2 S and CO 2 in the acid gas removal station. The work focuses on power plants with two combustion turbines, with lower and higher turbine inlet temperatures, respectively, as topping cycle. A high‐moisture lignite, partially dried before feeding the air‐blown gasification system, is used as fuel input. Because the raw lignite presents a very low amount of sulfur, a particular technique consisting of an acid gas recycle to the absorber, is adopted to fulfill the requirements related to the presence of H 2 S in the stream to the Claus plant and in the CO 2 ‐rich stream to storage. Despite the operation of the H 2 S removal section representing a significant issue, the impact on the performance of the power plant is limited. The calculations show that a significant lignite pre‐drying is necessary to achieve higher efficiency in case of CO 2 capture. In particular, considering a wide range (10–30 wt.%) of residual moisture in the dried lignite, higher heating value (HHV) efficiency presents a decreasing trend, with maximum values of 35.15% and 37.12% depending on the type of the combustion turbine, even though the higher the residual moisture in the dried coal, the lower the extraction of steam from the heat recovery steam cycle. On the other hand, introducing the specific primary energy consumption for CO 2 avoided (SPECCA) as a measure of the energy cost related to CO 2 capture, lower values were predicted when gasifying dried lignite with higher residual moisture content. In particular, a SPECCA value as low as 2.69 MJ/kg CO2 was calculated when gasifying lignite with the highest (30 wt.%) residual moisture content in a power plant with the advanced combustion turbine. Ultimately, focusing on the power plants with the advanced combustion turbine, air‐blown gasification of lignite brings about a reduction in HHV efficiency equal to almost 1.5 to 2.8 percentage points, depending on the residual moisture in the dried lignite, if compared with similar cases where bituminous coal is used as fuel input. Copyright © 2016 John Wiley & Sons, Ltd. Detailed analyses of lignite‐fired air‐blown gasification‐based combined cycles with CO 2 capture are presented and discussed. A significant lignite pre‐drying is necessary to achieve higher performance, with HHV efficiency up to 37.12%. However, if compared to similar cases where bituminous coal is used as fuel input, air‐blown gasification of lignite brings about a reduction in HHV efficiency equal to almost 1.5 to 2.8 percentage points, depending on the residual moisture in the dried lignite. Nutzungsrecht: Copyright © 2016 John Wiley & Sons, Ltd. IGCC TIT air‐blown MDEA drying SPECCA CCS lignite Moioli, Stefania oth Romano, Matteo C oth Lozza, Giovanni oth Enthalten in International journal of energy research London [u.a.] : Wiley-Intersience, 1977 40(2016), 6, Seite 831-845 (DE-627)129612324 (DE-600)243235-3 (DE-576)015108384 0363-907X nnns volume:40 year:2016 number:6 pages:831-845 http://dx.doi.org/10.1002/er.3488 Volltext http://onlinelibrary.wiley.com/doi/10.1002/er.3488/abstract http://search.proquest.com/docview/1777966032 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC GBV_ILN_70 50.70 AVZ AR 40 2016 6 831-845 |
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10.1002/er.3488 doi PQ20160430 (DE-627)OLC1973772337 (DE-599)GBVOLC1973772337 (PRQ)p1292-c7574a83f480809305d0adf188c799e513286fe4d2f8372a303bc038277c98553 (KEY)0059736820160000040000600831lignitefiredairblownigccsystemswithprecombustionco DE-627 ger DE-627 rakwb eng 620 DNB 50.70 bkl Giuffrida, Antonio verfasserin aut Lignite‐fired air‐blown IGCC systems with pre‐combustion CO2 capture 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Detailed analyses based on mass and energy balances of lignite‐fired air‐blown gasification‐based combined cycles with CO 2 pre‐combustion capture are presented and discussed in this work. The thermodynamic assessment is carried out with a proprietary code integrated with Aspen Plus ® to carefully simulate the selective removal of both H 2 S and CO 2 in the acid gas removal station. The work focuses on power plants with two combustion turbines, with lower and higher turbine inlet temperatures, respectively, as topping cycle. A high‐moisture lignite, partially dried before feeding the air‐blown gasification system, is used as fuel input. Because the raw lignite presents a very low amount of sulfur, a particular technique consisting of an acid gas recycle to the absorber, is adopted to fulfill the requirements related to the presence of H 2 S in the stream to the Claus plant and in the CO 2 ‐rich stream to storage. Despite the operation of the H 2 S removal section representing a significant issue, the impact on the performance of the power plant is limited. The calculations show that a significant lignite pre‐drying is necessary to achieve higher efficiency in case of CO 2 capture. In particular, considering a wide range (10–30 wt.%) of residual moisture in the dried lignite, higher heating value (HHV) efficiency presents a decreasing trend, with maximum values of 35.15% and 37.12% depending on the type of the combustion turbine, even though the higher the residual moisture in the dried coal, the lower the extraction of steam from the heat recovery steam cycle. On the other hand, introducing the specific primary energy consumption for CO 2 avoided (SPECCA) as a measure of the energy cost related to CO 2 capture, lower values were predicted when gasifying dried lignite with higher residual moisture content. In particular, a SPECCA value as low as 2.69 MJ/kg CO2 was calculated when gasifying lignite with the highest (30 wt.%) residual moisture content in a power plant with the advanced combustion turbine. Ultimately, focusing on the power plants with the advanced combustion turbine, air‐blown gasification of lignite brings about a reduction in HHV efficiency equal to almost 1.5 to 2.8 percentage points, depending on the residual moisture in the dried lignite, if compared with similar cases where bituminous coal is used as fuel input. Copyright © 2016 John Wiley & Sons, Ltd. Detailed analyses of lignite‐fired air‐blown gasification‐based combined cycles with CO 2 capture are presented and discussed. A significant lignite pre‐drying is necessary to achieve higher performance, with HHV efficiency up to 37.12%. However, if compared to similar cases where bituminous coal is used as fuel input, air‐blown gasification of lignite brings about a reduction in HHV efficiency equal to almost 1.5 to 2.8 percentage points, depending on the residual moisture in the dried lignite. Nutzungsrecht: Copyright © 2016 John Wiley & Sons, Ltd. IGCC TIT air‐blown MDEA drying SPECCA CCS lignite Moioli, Stefania oth Romano, Matteo C oth Lozza, Giovanni oth Enthalten in International journal of energy research London [u.a.] : Wiley-Intersience, 1977 40(2016), 6, Seite 831-845 (DE-627)129612324 (DE-600)243235-3 (DE-576)015108384 0363-907X nnns volume:40 year:2016 number:6 pages:831-845 http://dx.doi.org/10.1002/er.3488 Volltext http://onlinelibrary.wiley.com/doi/10.1002/er.3488/abstract http://search.proquest.com/docview/1777966032 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC GBV_ILN_70 50.70 AVZ AR 40 2016 6 831-845 |
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10.1002/er.3488 doi PQ20160430 (DE-627)OLC1973772337 (DE-599)GBVOLC1973772337 (PRQ)p1292-c7574a83f480809305d0adf188c799e513286fe4d2f8372a303bc038277c98553 (KEY)0059736820160000040000600831lignitefiredairblownigccsystemswithprecombustionco DE-627 ger DE-627 rakwb eng 620 DNB 50.70 bkl Giuffrida, Antonio verfasserin aut Lignite‐fired air‐blown IGCC systems with pre‐combustion CO2 capture 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Detailed analyses based on mass and energy balances of lignite‐fired air‐blown gasification‐based combined cycles with CO 2 pre‐combustion capture are presented and discussed in this work. The thermodynamic assessment is carried out with a proprietary code integrated with Aspen Plus ® to carefully simulate the selective removal of both H 2 S and CO 2 in the acid gas removal station. The work focuses on power plants with two combustion turbines, with lower and higher turbine inlet temperatures, respectively, as topping cycle. A high‐moisture lignite, partially dried before feeding the air‐blown gasification system, is used as fuel input. Because the raw lignite presents a very low amount of sulfur, a particular technique consisting of an acid gas recycle to the absorber, is adopted to fulfill the requirements related to the presence of H 2 S in the stream to the Claus plant and in the CO 2 ‐rich stream to storage. Despite the operation of the H 2 S removal section representing a significant issue, the impact on the performance of the power plant is limited. The calculations show that a significant lignite pre‐drying is necessary to achieve higher efficiency in case of CO 2 capture. In particular, considering a wide range (10–30 wt.%) of residual moisture in the dried lignite, higher heating value (HHV) efficiency presents a decreasing trend, with maximum values of 35.15% and 37.12% depending on the type of the combustion turbine, even though the higher the residual moisture in the dried coal, the lower the extraction of steam from the heat recovery steam cycle. On the other hand, introducing the specific primary energy consumption for CO 2 avoided (SPECCA) as a measure of the energy cost related to CO 2 capture, lower values were predicted when gasifying dried lignite with higher residual moisture content. In particular, a SPECCA value as low as 2.69 MJ/kg CO2 was calculated when gasifying lignite with the highest (30 wt.%) residual moisture content in a power plant with the advanced combustion turbine. Ultimately, focusing on the power plants with the advanced combustion turbine, air‐blown gasification of lignite brings about a reduction in HHV efficiency equal to almost 1.5 to 2.8 percentage points, depending on the residual moisture in the dried lignite, if compared with similar cases where bituminous coal is used as fuel input. Copyright © 2016 John Wiley & Sons, Ltd. Detailed analyses of lignite‐fired air‐blown gasification‐based combined cycles with CO 2 capture are presented and discussed. A significant lignite pre‐drying is necessary to achieve higher performance, with HHV efficiency up to 37.12%. However, if compared to similar cases where bituminous coal is used as fuel input, air‐blown gasification of lignite brings about a reduction in HHV efficiency equal to almost 1.5 to 2.8 percentage points, depending on the residual moisture in the dried lignite. Nutzungsrecht: Copyright © 2016 John Wiley & Sons, Ltd. IGCC TIT air‐blown MDEA drying SPECCA CCS lignite Moioli, Stefania oth Romano, Matteo C oth Lozza, Giovanni oth Enthalten in International journal of energy research London [u.a.] : Wiley-Intersience, 1977 40(2016), 6, Seite 831-845 (DE-627)129612324 (DE-600)243235-3 (DE-576)015108384 0363-907X nnns volume:40 year:2016 number:6 pages:831-845 http://dx.doi.org/10.1002/er.3488 Volltext http://onlinelibrary.wiley.com/doi/10.1002/er.3488/abstract http://search.proquest.com/docview/1777966032 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC GBV_ILN_70 50.70 AVZ AR 40 2016 6 831-845 |
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10.1002/er.3488 doi PQ20160430 (DE-627)OLC1973772337 (DE-599)GBVOLC1973772337 (PRQ)p1292-c7574a83f480809305d0adf188c799e513286fe4d2f8372a303bc038277c98553 (KEY)0059736820160000040000600831lignitefiredairblownigccsystemswithprecombustionco DE-627 ger DE-627 rakwb eng 620 DNB 50.70 bkl Giuffrida, Antonio verfasserin aut Lignite‐fired air‐blown IGCC systems with pre‐combustion CO2 capture 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Detailed analyses based on mass and energy balances of lignite‐fired air‐blown gasification‐based combined cycles with CO 2 pre‐combustion capture are presented and discussed in this work. The thermodynamic assessment is carried out with a proprietary code integrated with Aspen Plus ® to carefully simulate the selective removal of both H 2 S and CO 2 in the acid gas removal station. The work focuses on power plants with two combustion turbines, with lower and higher turbine inlet temperatures, respectively, as topping cycle. A high‐moisture lignite, partially dried before feeding the air‐blown gasification system, is used as fuel input. Because the raw lignite presents a very low amount of sulfur, a particular technique consisting of an acid gas recycle to the absorber, is adopted to fulfill the requirements related to the presence of H 2 S in the stream to the Claus plant and in the CO 2 ‐rich stream to storage. Despite the operation of the H 2 S removal section representing a significant issue, the impact on the performance of the power plant is limited. The calculations show that a significant lignite pre‐drying is necessary to achieve higher efficiency in case of CO 2 capture. In particular, considering a wide range (10–30 wt.%) of residual moisture in the dried lignite, higher heating value (HHV) efficiency presents a decreasing trend, with maximum values of 35.15% and 37.12% depending on the type of the combustion turbine, even though the higher the residual moisture in the dried coal, the lower the extraction of steam from the heat recovery steam cycle. On the other hand, introducing the specific primary energy consumption for CO 2 avoided (SPECCA) as a measure of the energy cost related to CO 2 capture, lower values were predicted when gasifying dried lignite with higher residual moisture content. In particular, a SPECCA value as low as 2.69 MJ/kg CO2 was calculated when gasifying lignite with the highest (30 wt.%) residual moisture content in a power plant with the advanced combustion turbine. Ultimately, focusing on the power plants with the advanced combustion turbine, air‐blown gasification of lignite brings about a reduction in HHV efficiency equal to almost 1.5 to 2.8 percentage points, depending on the residual moisture in the dried lignite, if compared with similar cases where bituminous coal is used as fuel input. Copyright © 2016 John Wiley & Sons, Ltd. Detailed analyses of lignite‐fired air‐blown gasification‐based combined cycles with CO 2 capture are presented and discussed. A significant lignite pre‐drying is necessary to achieve higher performance, with HHV efficiency up to 37.12%. However, if compared to similar cases where bituminous coal is used as fuel input, air‐blown gasification of lignite brings about a reduction in HHV efficiency equal to almost 1.5 to 2.8 percentage points, depending on the residual moisture in the dried lignite. Nutzungsrecht: Copyright © 2016 John Wiley & Sons, Ltd. IGCC TIT air‐blown MDEA drying SPECCA CCS lignite Moioli, Stefania oth Romano, Matteo C oth Lozza, Giovanni oth Enthalten in International journal of energy research London [u.a.] : Wiley-Intersience, 1977 40(2016), 6, Seite 831-845 (DE-627)129612324 (DE-600)243235-3 (DE-576)015108384 0363-907X nnns volume:40 year:2016 number:6 pages:831-845 http://dx.doi.org/10.1002/er.3488 Volltext http://onlinelibrary.wiley.com/doi/10.1002/er.3488/abstract http://search.proquest.com/docview/1777966032 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC GBV_ILN_70 50.70 AVZ AR 40 2016 6 831-845 |
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10.1002/er.3488 doi PQ20160430 (DE-627)OLC1973772337 (DE-599)GBVOLC1973772337 (PRQ)p1292-c7574a83f480809305d0adf188c799e513286fe4d2f8372a303bc038277c98553 (KEY)0059736820160000040000600831lignitefiredairblownigccsystemswithprecombustionco DE-627 ger DE-627 rakwb eng 620 DNB 50.70 bkl Giuffrida, Antonio verfasserin aut Lignite‐fired air‐blown IGCC systems with pre‐combustion CO2 capture 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Detailed analyses based on mass and energy balances of lignite‐fired air‐blown gasification‐based combined cycles with CO 2 pre‐combustion capture are presented and discussed in this work. The thermodynamic assessment is carried out with a proprietary code integrated with Aspen Plus ® to carefully simulate the selective removal of both H 2 S and CO 2 in the acid gas removal station. The work focuses on power plants with two combustion turbines, with lower and higher turbine inlet temperatures, respectively, as topping cycle. A high‐moisture lignite, partially dried before feeding the air‐blown gasification system, is used as fuel input. Because the raw lignite presents a very low amount of sulfur, a particular technique consisting of an acid gas recycle to the absorber, is adopted to fulfill the requirements related to the presence of H 2 S in the stream to the Claus plant and in the CO 2 ‐rich stream to storage. Despite the operation of the H 2 S removal section representing a significant issue, the impact on the performance of the power plant is limited. The calculations show that a significant lignite pre‐drying is necessary to achieve higher efficiency in case of CO 2 capture. In particular, considering a wide range (10–30 wt.%) of residual moisture in the dried lignite, higher heating value (HHV) efficiency presents a decreasing trend, with maximum values of 35.15% and 37.12% depending on the type of the combustion turbine, even though the higher the residual moisture in the dried coal, the lower the extraction of steam from the heat recovery steam cycle. On the other hand, introducing the specific primary energy consumption for CO 2 avoided (SPECCA) as a measure of the energy cost related to CO 2 capture, lower values were predicted when gasifying dried lignite with higher residual moisture content. In particular, a SPECCA value as low as 2.69 MJ/kg CO2 was calculated when gasifying lignite with the highest (30 wt.%) residual moisture content in a power plant with the advanced combustion turbine. Ultimately, focusing on the power plants with the advanced combustion turbine, air‐blown gasification of lignite brings about a reduction in HHV efficiency equal to almost 1.5 to 2.8 percentage points, depending on the residual moisture in the dried lignite, if compared with similar cases where bituminous coal is used as fuel input. Copyright © 2016 John Wiley & Sons, Ltd. Detailed analyses of lignite‐fired air‐blown gasification‐based combined cycles with CO 2 capture are presented and discussed. A significant lignite pre‐drying is necessary to achieve higher performance, with HHV efficiency up to 37.12%. However, if compared to similar cases where bituminous coal is used as fuel input, air‐blown gasification of lignite brings about a reduction in HHV efficiency equal to almost 1.5 to 2.8 percentage points, depending on the residual moisture in the dried lignite. Nutzungsrecht: Copyright © 2016 John Wiley & Sons, Ltd. IGCC TIT air‐blown MDEA drying SPECCA CCS lignite Moioli, Stefania oth Romano, Matteo C oth Lozza, Giovanni oth Enthalten in International journal of energy research London [u.a.] : Wiley-Intersience, 1977 40(2016), 6, Seite 831-845 (DE-627)129612324 (DE-600)243235-3 (DE-576)015108384 0363-907X nnns volume:40 year:2016 number:6 pages:831-845 http://dx.doi.org/10.1002/er.3488 Volltext http://onlinelibrary.wiley.com/doi/10.1002/er.3488/abstract http://search.proquest.com/docview/1777966032 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC GBV_ILN_70 50.70 AVZ AR 40 2016 6 831-845 |
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Lignite‐fired air‐blown IGCC systems with pre‐combustion CO2 capture |
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Detailed analyses based on mass and energy balances of lignite‐fired air‐blown gasification‐based combined cycles with CO 2 pre‐combustion capture are presented and discussed in this work. The thermodynamic assessment is carried out with a proprietary code integrated with Aspen Plus ® to carefully simulate the selective removal of both H 2 S and CO 2 in the acid gas removal station. The work focuses on power plants with two combustion turbines, with lower and higher turbine inlet temperatures, respectively, as topping cycle. A high‐moisture lignite, partially dried before feeding the air‐blown gasification system, is used as fuel input. Because the raw lignite presents a very low amount of sulfur, a particular technique consisting of an acid gas recycle to the absorber, is adopted to fulfill the requirements related to the presence of H 2 S in the stream to the Claus plant and in the CO 2 ‐rich stream to storage. Despite the operation of the H 2 S removal section representing a significant issue, the impact on the performance of the power plant is limited. The calculations show that a significant lignite pre‐drying is necessary to achieve higher efficiency in case of CO 2 capture. In particular, considering a wide range (10–30 wt.%) of residual moisture in the dried lignite, higher heating value (HHV) efficiency presents a decreasing trend, with maximum values of 35.15% and 37.12% depending on the type of the combustion turbine, even though the higher the residual moisture in the dried coal, the lower the extraction of steam from the heat recovery steam cycle. On the other hand, introducing the specific primary energy consumption for CO 2 avoided (SPECCA) as a measure of the energy cost related to CO 2 capture, lower values were predicted when gasifying dried lignite with higher residual moisture content. In particular, a SPECCA value as low as 2.69 MJ/kg CO2 was calculated when gasifying lignite with the highest (30 wt.%) residual moisture content in a power plant with the advanced combustion turbine. Ultimately, focusing on the power plants with the advanced combustion turbine, air‐blown gasification of lignite brings about a reduction in HHV efficiency equal to almost 1.5 to 2.8 percentage points, depending on the residual moisture in the dried lignite, if compared with similar cases where bituminous coal is used as fuel input. Copyright © 2016 John Wiley & Sons, Ltd. Detailed analyses of lignite‐fired air‐blown gasification‐based combined cycles with CO 2 capture are presented and discussed. A significant lignite pre‐drying is necessary to achieve higher performance, with HHV efficiency up to 37.12%. However, if compared to similar cases where bituminous coal is used as fuel input, air‐blown gasification of lignite brings about a reduction in HHV efficiency equal to almost 1.5 to 2.8 percentage points, depending on the residual moisture in the dried lignite. |
| abstractGer |
Detailed analyses based on mass and energy balances of lignite‐fired air‐blown gasification‐based combined cycles with CO 2 pre‐combustion capture are presented and discussed in this work. The thermodynamic assessment is carried out with a proprietary code integrated with Aspen Plus ® to carefully simulate the selective removal of both H 2 S and CO 2 in the acid gas removal station. The work focuses on power plants with two combustion turbines, with lower and higher turbine inlet temperatures, respectively, as topping cycle. A high‐moisture lignite, partially dried before feeding the air‐blown gasification system, is used as fuel input. Because the raw lignite presents a very low amount of sulfur, a particular technique consisting of an acid gas recycle to the absorber, is adopted to fulfill the requirements related to the presence of H 2 S in the stream to the Claus plant and in the CO 2 ‐rich stream to storage. Despite the operation of the H 2 S removal section representing a significant issue, the impact on the performance of the power plant is limited. The calculations show that a significant lignite pre‐drying is necessary to achieve higher efficiency in case of CO 2 capture. In particular, considering a wide range (10–30 wt.%) of residual moisture in the dried lignite, higher heating value (HHV) efficiency presents a decreasing trend, with maximum values of 35.15% and 37.12% depending on the type of the combustion turbine, even though the higher the residual moisture in the dried coal, the lower the extraction of steam from the heat recovery steam cycle. On the other hand, introducing the specific primary energy consumption for CO 2 avoided (SPECCA) as a measure of the energy cost related to CO 2 capture, lower values were predicted when gasifying dried lignite with higher residual moisture content. In particular, a SPECCA value as low as 2.69 MJ/kg CO2 was calculated when gasifying lignite with the highest (30 wt.%) residual moisture content in a power plant with the advanced combustion turbine. Ultimately, focusing on the power plants with the advanced combustion turbine, air‐blown gasification of lignite brings about a reduction in HHV efficiency equal to almost 1.5 to 2.8 percentage points, depending on the residual moisture in the dried lignite, if compared with similar cases where bituminous coal is used as fuel input. Copyright © 2016 John Wiley & Sons, Ltd. Detailed analyses of lignite‐fired air‐blown gasification‐based combined cycles with CO 2 capture are presented and discussed. A significant lignite pre‐drying is necessary to achieve higher performance, with HHV efficiency up to 37.12%. However, if compared to similar cases where bituminous coal is used as fuel input, air‐blown gasification of lignite brings about a reduction in HHV efficiency equal to almost 1.5 to 2.8 percentage points, depending on the residual moisture in the dried lignite. |
| abstract_unstemmed |
Detailed analyses based on mass and energy balances of lignite‐fired air‐blown gasification‐based combined cycles with CO 2 pre‐combustion capture are presented and discussed in this work. The thermodynamic assessment is carried out with a proprietary code integrated with Aspen Plus ® to carefully simulate the selective removal of both H 2 S and CO 2 in the acid gas removal station. The work focuses on power plants with two combustion turbines, with lower and higher turbine inlet temperatures, respectively, as topping cycle. A high‐moisture lignite, partially dried before feeding the air‐blown gasification system, is used as fuel input. Because the raw lignite presents a very low amount of sulfur, a particular technique consisting of an acid gas recycle to the absorber, is adopted to fulfill the requirements related to the presence of H 2 S in the stream to the Claus plant and in the CO 2 ‐rich stream to storage. Despite the operation of the H 2 S removal section representing a significant issue, the impact on the performance of the power plant is limited. The calculations show that a significant lignite pre‐drying is necessary to achieve higher efficiency in case of CO 2 capture. In particular, considering a wide range (10–30 wt.%) of residual moisture in the dried lignite, higher heating value (HHV) efficiency presents a decreasing trend, with maximum values of 35.15% and 37.12% depending on the type of the combustion turbine, even though the higher the residual moisture in the dried coal, the lower the extraction of steam from the heat recovery steam cycle. On the other hand, introducing the specific primary energy consumption for CO 2 avoided (SPECCA) as a measure of the energy cost related to CO 2 capture, lower values were predicted when gasifying dried lignite with higher residual moisture content. In particular, a SPECCA value as low as 2.69 MJ/kg CO2 was calculated when gasifying lignite with the highest (30 wt.%) residual moisture content in a power plant with the advanced combustion turbine. Ultimately, focusing on the power plants with the advanced combustion turbine, air‐blown gasification of lignite brings about a reduction in HHV efficiency equal to almost 1.5 to 2.8 percentage points, depending on the residual moisture in the dried lignite, if compared with similar cases where bituminous coal is used as fuel input. Copyright © 2016 John Wiley & Sons, Ltd. Detailed analyses of lignite‐fired air‐blown gasification‐based combined cycles with CO 2 capture are presented and discussed. A significant lignite pre‐drying is necessary to achieve higher performance, with HHV efficiency up to 37.12%. However, if compared to similar cases where bituminous coal is used as fuel input, air‐blown gasification of lignite brings about a reduction in HHV efficiency equal to almost 1.5 to 2.8 percentage points, depending on the residual moisture in the dried lignite. |
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The calculations show that a significant lignite pre‐drying is necessary to achieve higher efficiency in case of CO 2 capture. In particular, considering a wide range (10–30 wt.%) of residual moisture in the dried lignite, higher heating value (HHV) efficiency presents a decreasing trend, with maximum values of 35.15% and 37.12% depending on the type of the combustion turbine, even though the higher the residual moisture in the dried coal, the lower the extraction of steam from the heat recovery steam cycle. On the other hand, introducing the specific primary energy consumption for CO 2 avoided (SPECCA) as a measure of the energy cost related to CO 2 capture, lower values were predicted when gasifying dried lignite with higher residual moisture content. In particular, a SPECCA value as low as 2.69 MJ/kg CO2 was calculated when gasifying lignite with the highest (30 wt.%) residual moisture content in a power plant with the advanced combustion turbine. Ultimately, focusing on the power plants with the advanced combustion turbine, air‐blown gasification of lignite brings about a reduction in HHV efficiency equal to almost 1.5 to 2.8 percentage points, depending on the residual moisture in the dried lignite, if compared with similar cases where bituminous coal is used as fuel input. Copyright © 2016 John Wiley & Sons, Ltd. Detailed analyses of lignite‐fired air‐blown gasification‐based combined cycles with CO 2 capture are presented and discussed. A significant lignite pre‐drying is necessary to achieve higher performance, with HHV efficiency up to 37.12%. However, if compared to similar cases where bituminous coal is used as fuel input, air‐blown gasification of lignite brings about a reduction in HHV efficiency equal to almost 1.5 to 2.8 percentage points, depending on the residual moisture in the dried lignite.</subfield></datafield><datafield tag="540" ind1=" " ind2=" "><subfield code="a">Nutzungsrecht: Copyright © 2016 John Wiley & Sons, Ltd.</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">IGCC</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">TIT</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">air‐blown</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">MDEA</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">drying</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">SPECCA</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">CCS</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">lignite</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Moioli, Stefania</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Romano, Matteo C</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Lozza, Giovanni</subfield><subfield code="4">oth</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">Enthalten in</subfield><subfield code="t">International journal of energy research</subfield><subfield code="d">London [u.a.] : Wiley-Intersience, 1977</subfield><subfield code="g">40(2016), 6, Seite 831-845</subfield><subfield code="w">(DE-627)129612324</subfield><subfield code="w">(DE-600)243235-3</subfield><subfield code="w">(DE-576)015108384</subfield><subfield code="x">0363-907X</subfield><subfield code="7">nnns</subfield></datafield><datafield tag="773" ind1="1" ind2="8"><subfield code="g">volume:40</subfield><subfield code="g">year:2016</subfield><subfield code="g">number:6</subfield><subfield code="g">pages:831-845</subfield></datafield><datafield tag="856" ind1="4" ind2="1"><subfield code="u">http://dx.doi.org/10.1002/er.3488</subfield><subfield code="3">Volltext</subfield></datafield><datafield tag="856" ind1="4" ind2="2"><subfield code="u">http://onlinelibrary.wiley.com/doi/10.1002/er.3488/abstract</subfield></datafield><datafield tag="856" ind1="4" ind2="2"><subfield code="u">http://search.proquest.com/docview/1777966032</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_USEFLAG_A</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SYSFLAG_A</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_OLC</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SSG-OLC-TEC</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_70</subfield></datafield><datafield tag="936" ind1="b" ind2="k"><subfield code="a">50.70</subfield><subfield code="q">AVZ</subfield></datafield><datafield tag="951" ind1=" " ind2=" "><subfield code="a">AR</subfield></datafield><datafield tag="952" ind1=" " ind2=" "><subfield code="d">40</subfield><subfield code="j">2016</subfield><subfield code="e">6</subfield><subfield code="h">831-845</subfield></datafield></record></collection>
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