scholarly journals Air Pollutant Emission Abatement of the Fossil-Fuel Power Plants by Multiple Control Strategies in Taiwan

Energies ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5716
Author(s):  
Jiun-Horng Tsai ◽  
Shih-Hsien Chen ◽  
Shen-Fong Chen ◽  
Hung-Lung Chiang
Keyword(s):  
Electricity Generation ◽  
Power Plants ◽  
Fossil Fuel ◽  
Air Pollutant ◽  
Pollutant Emission ◽  
Nox Emissions ◽  
Multiple Control ◽  
Mean Values ◽  
Emission Abatement ◽  
Fossil Fuel Power Plants

This study is an investigation of air pollutant emission abatement in the electricity generation sector from fossil-fuel power plants in Taiwan in 2014 and 2018. PM concentrations are determined by the results of regular tests, while SOx and NOx are determined by continuous emission monitoring systems (CEMS) of flue gas from power plants. The results indicate that electricity generation from fossil-fuel power plants increased by 13.8% from 2014 to 2018. However, emissions of air pollutants from fossil-fuel power plants declined during this period. The results indicate that the annual emissions of SOx, NOx, and PM were 40,826, 59,196, and 5363 tons per year (TPY), respectively, in 2014. The emissions decreased to 30,097 TPY (28% reduction) for SOx, 48,530 TPY (18% reduction) for NOx, and 4496 TPY (16% reduction) for PM in 2018. The ensemble mean values of each air pollutant emission factor also decreased significantly. SOx emissions decreased from 0.2443 to 0.1583 mg/kWh (35% reduction). NOx emissions decreased from 0.3542 to 0.2552 g/kWh (28% reduction). PM emissions decreased from 0.0321 to 0.0236 mg/kWh (26.5% reduction). The results indicated that phasing out of high-pollutant generating units and switching the fuel from coal to natural gas could abate the emissions of SOx and PM, and NOx emissions could be abated by introducing control devices. In addition, new power generation sectors will be constructed and equipped with ultra-low emission control systems to reduce air pollution and create a cleaner and healthier electricity generation system in Taiwan.

scholarly journals A high-resolution, spatially explicit estimate of fossil-fuel CO2 emissions from the Tokyo Metropolis, Japan

2020 ◽  
Author(s):  
Richao Cong ◽  
Makoto Saito ◽  
Tomohiro Oda ◽  
Tetsuo Fukui ◽  
Ryuichi Hirata ◽  
...  
Keyword(s):  
Climate Change ◽  
Spatial Data ◽  
Power Plants ◽  
Fossil Fuel ◽  
Ghg Emissions ◽  
Air Pollutant ◽  
Pollutant Emission ◽  
Spatially Explicit ◽  
Road Transportation ◽  
Emission Data

Abstract Background: The quantification of urban greenhouse gas (GHG) emissions is an important task in combating climate change. Emission inventories that include spatially explicit emission estimates facilitate the accurate tracking of emission changes, identification of emission sources, and formulation of policies for climate-change mitigation. Many currently available gridded emission estimates are based on the disaggregation of country- or state-wide emission estimates, which may be useful in describing city-wide emissions but are of limited value in tracking changes at subnational levels. Urban GHG emissions should therefore be quantified with a true bottom-up approach. Results: Multi-resolution, spatially explicit estimates of fossil-fuel carbon dioxide (FFCO2) emissions from the Tokyo Metropolis, Japan, were derived. Spatially explicit emission data were collected for point (e.g., power plants and waste incinerators), line (mostly traffic), and area (e.g., residential and commercial areas) sources. Emissions were mapped on the basis of emission rates calculated for source locations. Activity, emissions, and spatial data were integrated, and the results were visualized using a geographic information system approach. Conclusions: The annual total FFCO2 emissions from the Tokyo Metropolis in 2014 were 44,855 Gg CO2, with the road-transportation sector (16,323 Gg CO2) accounting for 36.4% of the total. Spatial emission patterns were verified via a comparison with the East Asian Air Pollutant Emission Grid Database for Japan (EAGrid-Japan), which demonstrated the applicability of this methodology to other prefectures and therefore the entire country.

scholarly journals Energy Storage and Installed Wind Capacity Requirements for the Substitution of Fossil Fuels in the Electricity Generation Sector

2021 ◽  
Vol 03 (03) ◽  
pp. 1-1
Author(s):  
Efstathios E. Michaelides ◽  
Keyword(s):  
Energy Storage ◽  
Energy Demand ◽  
Electricity Generation ◽  
Power Plants ◽  
Fossil Fuels ◽  
Fossil Fuel ◽  
Storage Capacity ◽  
Renewable Energy Sources ◽  
Energy Storage Capacity ◽  
Fossil Fuel Power Plants

The impending adverse effects of Global Climate Change encourages the substitution of fossil fuels with non-carbon sources for electricity generation. However, while fossil fuel power plants may generate electric power at demand, the most abundant renewable energy sources–wind and solar–are intermittent or periodically variable. This necessitates the development of adequate energy storage at the utility/grid level. Using actual data for the hourly energy demand in the ERCOT electricity grid, this study examines the electricity supply-demand equilibrium and determines the necessary energy storage capacity for the substitution, first, of the coal power plants and, secondly, of all the fossil fuel power plants. The calculations show that, if the natural gas, intermediate-load power plants continue to be available, all coal units may be substituted with wind farms without the need for energy storage. When all the fossil fuel units are to be substituted, significant energy storage capacity is required, approximately 45.3 million m3. The calculations also show that the further development of nuclear energy and additional solar energy units reduce the requirements for energy storage and, also lessen the energy dissipation in the storage-recovery process.

scholarly journals A high-resolution, spatially explicit estimate of fossil-fuel CO2 emissions from the Tokyo Metropolis, Japan

2021 ◽  
Author(s):  
Richao Cong ◽  
Makoto Saito ◽  
Tetsuo Fukui ◽  
Ryuichi Hirata ◽  
Akihiko Ito
Keyword(s):  
Climate Change ◽  
Spatial Data ◽  
Power Plants ◽  
Fossil Fuel ◽  
Ghg Emissions ◽  
Air Pollutant ◽  
Pollutant Emission ◽  
Spatially Explicit ◽  
Road Transportation ◽  
Emission Data

Abstract Background: The quantification of urban greenhouse gas (GHG) emissions is an important task in combating climate change. Emission inventories that include spatially explicit emission estimates facilitate the accurate tracking of emission changes, identification of emission sources, and formulation of policies for climate-change mitigation. Many currently available gridded emission estimates are based on the disaggregation of country- or state-wide emission estimates, which may be useful in describing city-wide emissions but are of limited value in tracking changes at subnational levels. Urban GHG emissions should therefore be quantified with a true bottom-up approach. Results: Multi-resolution, spatially explicit estimates of fossil-fuel carbon dioxide (FFCO2) emissions from the Tokyo Metropolis, Japan, were derived. Spatially explicit emission data were collected for point (e.g., power plants and waste incinerators), line (mostly traffic), and area (e.g., residential and commercial areas) sources. Emissions were mapped on the basis of emission rates calculated for source locations. Activity, emissions, and spatial data were integrated, and the results were visualized using a geographic information system approach.Conclusions: The annual total FFCO2 emissions from the Tokyo Metropolis in 2014 were 43,916 Gg CO2, with the road-transportation sector (16,323 Gg CO2) accounting for 37.2% of the total. Spatial emission patterns were verified via a comparison with the East Asian Air Pollutant Emission Grid Database for Japan (EAGrid-Japan) and the Open‐source Data Inventory for Anthropogenic CO2 (ODIAC), which demonstrated the applicability of this methodology to other prefectures and therefore the entire country.

scholarly journals A high-resolution, spatially explicit estimate of fossil-fuel CO2 emissions from the Tokyo Metropolis, Japan

2020 ◽  
Author(s):  
Richao Cong ◽  
Makoto Saito ◽  
Tetsuo Fukui ◽  
Ryuichi Hirata ◽  
Akihiko Ito
Keyword(s):  
Climate Change ◽  
Spatial Data ◽  
Power Plants ◽  
Fossil Fuel ◽  
Ghg Emissions ◽  
Air Pollutant ◽  
Pollutant Emission ◽  
Spatially Explicit ◽  
Road Transportation ◽  
Emission Data

Abstract Background: The quantification of urban greenhouse gas (GHG) emissions is an important task in combating climate change. Emission inventories that include spatially explicit emission estimates facilitate the accurate tracking of emission changes, identification of emission sources, and formulation of policies for climate-change mitigation. Many currently available gridded emission estimates are based on the disaggregation of country- or state-wide emission estimates, which may be useful in describing city-wide emissions but are of limited value in tracking changes at subnational levels. Urban GHG emissions should therefore be quantified with a true bottom-up approach. Results: Multi-resolution, spatially explicit estimates of fossil-fuel carbon dioxide (FFCO2) emissions from the Tokyo Metropolis, Japan, were derived. Spatially explicit emission data were collected for point (e.g., power plants and waste incinerators), line (mostly traffic), and area (e.g., residential and commercial areas) sources. Emissions were mapped on the basis of emission rates calculated for source locations. Activity, emissions, and spatial data were integrated, and the results were visualized using a geographic information system approach.Conclusions: The annual total FFCO2 emissions from the Tokyo Metropolis in 2014 were 43,916 Gg CO2, with the road-transportation sector (16,323 Gg CO2) accounting for 37.2% of the total. Spatial emission patterns were verified via a comparison with the East Asian Air Pollutant Emission Grid Database for Japan (EAGrid-Japan) and the Open‐source Data Inventory for Anthropogenic CO2 (ODIAC), which demonstrated the applicability of this methodology to other prefectures and therefore the entire country.

scholarly journals A high-resolution, spatially explicit estimate of fossil-fuel CO2 emissions from the Tokyo Metropolis, Japan

2020 ◽  
Author(s):  
Richao Cong ◽  
Makoto Saito ◽  
Tetsuo Fukui ◽  
Ryuichi Hirata ◽  
Akihiko Ito
Keyword(s):  
Climate Change ◽  
Spatial Data ◽  
Power Plants ◽  
Fossil Fuel ◽  
Ghg Emissions ◽  
Air Pollutant ◽  
Pollutant Emission ◽  
Spatially Explicit ◽  
Road Transportation ◽  
Emission Data

Abstract Background: The quantification of urban greenhouse gas (GHG) emissions is an important task in combating climate change. Emission inventories that include spatially explicit emission estimates facilitate the accurate tracking of emission changes, identification of emission sources, and formulation of policies for climate-change mitigation. Many currently available gridded emission estimates are based on the disaggregation of country- or state-wide emission estimates, which may be useful in describing city-wide emissions but are of limited value in tracking changes at subnational levels. Urban GHG emissions should therefore be quantified with a true bottom-up approach. Results: Multi-resolution, spatially explicit estimates of fossil-fuel carbon dioxide (FFCO2 ) emissions from the Tokyo Metropolis, Japan, were derived. Spatially explicit emission data were collected for point (e.g., power plants and waste incinerators), line (mostly traffic), and area (e.g., residential and commercial areas) sources. Emissions were mapped on the basis of emission rates calculated for source locations. Activity, emissions, and spatial data were integrated, and the results were visualized using a geographic information system approach. Conclusions: The annual total FFCO2 emissions from the Tokyo Metropolis in 2014 were 44,855 Gg CO2 , with the road-transportation sector (16,323 Gg CO2 ) accounting for 36.4% of the total. Spatial emission patterns were verified via a comparison with the East Asian Air Pollutant Emission Grid Database for Japan (EAGrid-Japan), which demonstrated the applicability of this methodology to other prefectures and therefore the entire country.

Boiler Implosion Control in Fossil Fuel Power Plants

1985 ◽  
Vol 107 (4) ◽  
pp. 267-269 ◽  
Author(s):  
S. Z. Wu ◽  
D. N. Wormley ◽  
D. Rowell ◽  
P. Griffith
Keyword(s):  
Power Plants ◽  
Fossil Fuel ◽  
Companion Paper ◽  
Simulation Techniques ◽  
Power Plant Boiler ◽  
Induced Draft Fan ◽  
Fossil Fuel Power Plants ◽  
Computer Simulation Techniques ◽  
Plant Boiler ◽  
Furnace Pressure

An evaluation of systems for control of fossil fuel power plant boiler and stack implosions has been performed using computer simulation techniques described in a companion paper. The simulations have shown that forced and induced draft fan control systems and induced draft fan bypass systems reduce the furnace pressure excursions significantly following a main fuel trip. The limitations of these systems are associated with actuator range and response time and stack pressure excursions during control actions. Preliminary study suggests that an alternative control solution may be achieved by discharging steam into the furnace after a fuel trip.

Application of ARPS–CMAQ modeling system for urban air pollutant emission abatement

2013 ◽  
Vol 8 (4) ◽  
pp. 462-473
Author(s):  
X.Y. Zhao ◽  
S.Y. Cheng ◽  
J.B. Li ◽  
X.R. Guo ◽  
H.Y. Wang
Keyword(s):  
Air Pollutant ◽  
Pollutant Emission ◽  
Urban Air ◽  
Emission Abatement
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