4-E analyses of chemical looping combustion based subcritical, supercritical and ultra-supercritical coal-fired power plants

Surywanshi, Gajanan Dattarao; Pillai, B. Basant Kumar; Patnaikuni, Venkata Suresh; Vooradi, Ramsagar; Anne, Sarath Babu

doi:10.1016/j.enconman.2019.112050

Cited by 43 publications

(41 citation statements)

References 31 publications

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“…Despite the large energy loss in the steam turbine (A300), the potential to utilize the wasted heat energy as useful work (or exergy) was low. However, there was significant potential for improvement at the boiler (A200) owing to the high extent of exergy destruction, which is consistent with previous reports 3,21 . The energy and exergy losses at A500 (ASU) and A600 (CPU) were moderate, highlighting the necessity for heat integration in the cryogenic processes.…”

Section: Resultssupporting

confidence: 89%

“…A corporate tax ( β ) of 20% was applied. The prices of electricity, cooling water, and chilled water were 0.098 $/kWh, 0.273 $/m, 3 and 1.0 $/m, 3 respectively. Coal and coal char had the same price: 50 $/t.…”

Section: E Analysesmentioning

confidence: 99%

“…Although the dependence of electricity production on coal is expected to decrease to 25% in 2040 in the SPS, the amount of electricity produced from coal is anticipated to remain annually at ~10 000 TWh between 2018 and 2040 2 . Coal‐fired power plants are major sources of CO 2 emission, 3 accounting for 10 Gt (=30%) of the global emission (33 Gt) in 2018 2 . An optimistic scenario for sustainable development recommends the reduction of the CO 2 emission from coal‐fired power plants to less than 1 Gt/y by 2040 by utilizing carbon capture, utilization, and storage, 1 where approximately 3000 TWh of electricity would be generated from coal‐fired power plants 2…”

Section: Introductionmentioning

confidence: 99%

“…Lee et al performed a TEA for a 600 MW e air‐combustion USC‐CFB power plant without CCS 27 . Surywanshi et al assessed the energy, exergy, environment, and economic (4E) values for 500 MW e PC power plants with chemical looping combustion for CO 2 capture, where the potential for system improvement to reduce the exergy loss was estimated via exergy analysis 3 …”

Section: Introductionmentioning

confidence: 99%

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Effects of flue gas recirculation on energy, exergy, environment, and economics in oxy‐coal circulating fluidized‐bed power plants with CO₂ capture

Kim

Lim

Lee

et al. 2020

Intl J of Energy Research

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Summary CO2 capture and storage(CCS) are required for coal‐fired power plants, which are major sources of anthropogenic CO2 emission. In this study, energy, exergy, environment, and economic (4E) analyses were performed for a 500‐MWe oxy‐coal ultra‐supercritical circulating fluidized‐bed (CFB) power plant with CO2 capture. The effect of the location of flue‐gas recirculation (FGR) on the 4E values was investigated for wet FGR (wFGR) at 170°C, dry FGR (dFGR) at 68°C, and 80% wet and 20% dry FGR (wdFGR). The net electricity efficiencies of the wFGR and dFGR power plants were 37% and 36%, respectively. The exergy loss was the largest in the combustor and boiler area, where process improvement was possible. The levelized cost of electricity was approximately 60 $/MWh. The return on investment was 6.7% and 6.1%/y for the wFGR and dFGR plants, respectively. The CO2 emission rate decreased by 90% (from 690 to 76 kg‐CO2/MWh) in the oxy‐coal power plants with CO2 capture. Relative to the wFGR, the dFGR was advantageous for preventing material corrosion because of the lower sulfur content in the FGR stream. For the wdFGR power plant, the process performance was intermediate, that is, between that of the wFGR plant and that of the dFGR plant. The study provided an effective tool for identifying the technological and economic effects of the FGR location for the oxy‐coal power plant with CCS via 4E analyses.

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Section: Resultssupporting

confidence: 89%

Section: E Analysesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of flue gas recirculation on energy, exergy, environment, and economics in oxy‐coal circulating fluidized‐bed power plants with CO₂ capture

Kim

Lim

Lee

et al. 2020

Intl J of Energy Research

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“…Climate change issues, biosphere alteration and biodiversity loss are some of the critical challenges [ 1 , 2 , 3 , 4 ]. Some industrial activities release synthesis gas composed of carbon monoxide (CO), carbon dioxide (CO 2 ) and hydrogen (H 2 ) in different fractions [ 5 , 6 , 7 , 8 ]. Varies conventional strategies such as capture and storage are employed to mitigate the greenhouse gas (GHG) emissions [ 3 , 8 , 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Syngas Fermentation to Acetate and Ethanol with Adaptative Electroactive Carboxydotrophs in Single Chambered Microbial Electrochemical System

Tharak

Mohan

2022

Micromachines

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Microbial electrosynthesis system (MES; single-chambered) was fabricated and evaluated with carbon cloth/graphite as a working/counter electrode employing an enriched microbiome. Continuous syngas sparging (at working electrode; WE) enabled the growth of endo electrogenic bacteria by availing the inorganic carbon source. Applied potential (−0.5 V) on the working electrode facilitated the reduction in syngas, leading to the synthesis of fatty acids and alcohols. The higher acetic acid titer of 3.8 g/L and ethanol concentration of 0.2 g/L was observed at an active microbial metabolic state, evidencing the shift in metabolism from acetogenic to solventogenesis. Voltammograms evidenced distinct redox species with low charge transfer resistance (Rct; Nyquist impedance). Reductive catalytic current (−0.02 mA) enabled the charge transfer efficiency of the cathodes favoring syngas conversion to products. The surface morphology of carbon cloth and system-designed conditions favored the growth of electrochemically active consortia. Metagenomic analysis revealed the enrichment of phylum/class with Actinobacteria, Firmicutes/Clostridia and Bacilli, which accounts for the syngas fermentation through suitable gene loci.

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Energy, Exergy, Economic and Exergoeconomic Analyses of Chemical Looping Combustion Plant Using Waste Bark for District Heat and Power Generation with Negative Emissions

Surywanshi,

Leion,

Soleimanisalim

2023

Energy Tech

Self Cite

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The greenhouse gas emissions from the boiler of pulp and paper industries can be minimized by adapting chemical looping combustion (CLC) technology. This work aims to analyze the energy, exergy, economic, and exergoeconomic performance of an industrial scale CLC plant for district heat and electricity generation using waste bark from the paper and pulp industry. The CLC plant with one natural ore and one industrial waste oxygen carrier (OC) is modeled using Aspen Plus. The performance of the CLC plant has been compared to Örtofta combined heat and power plant without CO2 capture and with post‐combustion CO2 capture as the reference cases. Results showed that the CLC‐based power plant is energetically, exegetically, and economically efficient compared to the reference cases. The circulating fluidized bed boiler unit contributes the highest exergy destruction (about 50–80%). Among the CO2 capture plants, the CLC plant with ilmenite has the lowest levelized cost of district heat (4.58 € GJ−1), and a payback period (9.69 years) followed by the CLC plant with LD slag (5.91 € GJ−1 and 11.84 years), and the plant with PCC (6.94 € GJ−1 and 13.58 years). The exergoeconomic analysis reveals that the CLC reactors have the highest cost reduction potential, followed by the steam turbine.

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4-E analyses of chemical looping combustion based subcritical, supercritical and ultra-supercritical coal-fired power plants

Cited by 43 publications

References 31 publications

Effects of flue gas recirculation on energy, exergy, environment, and economics in oxy‐coal circulating fluidized‐bed power plants with CO₂ capture

Effects of flue gas recirculation on energy, exergy, environment, and economics in oxy‐coal circulating fluidized‐bed power plants with CO₂ capture

Syngas Fermentation to Acetate and Ethanol with Adaptative Electroactive Carboxydotrophs in Single Chambered Microbial Electrochemical System

Energy, Exergy, Economic and Exergoeconomic Analyses of Chemical Looping Combustion Plant Using Waste Bark for District Heat and Power Generation with Negative Emissions

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4-E analyses of chemical looping combustion based subcritical, supercritical and ultra-supercritical coal-fired power plants

Cited by 43 publications

References 31 publications

Effects of flue gas recirculation on energy, exergy, environment, and economics in oxy‐coal circulating fluidized‐bed power plants with CO2 capture

Effects of flue gas recirculation on energy, exergy, environment, and economics in oxy‐coal circulating fluidized‐bed power plants with CO2 capture

Syngas Fermentation to Acetate and Ethanol with Adaptative Electroactive Carboxydotrophs in Single Chambered Microbial Electrochemical System

Energy, Exergy, Economic and Exergoeconomic Analyses of Chemical Looping Combustion Plant Using Waste Bark for District Heat and Power Generation with Negative Emissions

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Product

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Effects of flue gas recirculation on energy, exergy, environment, and economics in oxy‐coal circulating fluidized‐bed power plants with CO₂ capture

Effects of flue gas recirculation on energy, exergy, environment, and economics in oxy‐coal circulating fluidized‐bed power plants with CO₂ capture