CO2 capture and utilization from supercritical coal direct chemical looping combustion power plant – Comprehensive analysis of different case studies

Surywanshi, Gajanan Dattarao; Patnaikuni, Venkata Suresh; Vooradi, Ramsagar; Kakunuri, Manohar

doi:10.1016/j.apenergy.2021.117915

Cited by 16 publications

(10 citation statements)

References 32 publications

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“…The rest of the gases (S20) were compressed to 80 bar and finally sent to the mixer (M3). [ 22 ] Keeping in mind the operating feasibility of absorption columns and distillation columns, the pressure of liquid stream from K1 (S22) was reduced. Accordingly, the S22 stream was expanded to 1.8 bar via two valves (V1, V2) and, as a consequence, it got converted into mixed phase S24 stream (88% liquid phase and 12% gas phase).…”

Section: Resultsmentioning

confidence: 99%

Design framework for dimethyl ether (DME)production from coal and biomass‐derived syngas via simulation approach

et al. 2023

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A comprehensive thermodynamic study was conducted to evaluate the comparative efficacy of methanol and dimethyl ether (DME) synthesis using CO 2 rich syngas feed. The first part of our study included assessing the relative performances of the methanol synthesis system, two step DME synthesis system, and one step DME synthesis system in terms of the CO x conversion and product yield (methanol/ DME) based on the Gibbs free energy minimization approach. The wide range of composition of CO 2 -enriched syngas feed produced by the coal and biomass gasification was simulated using Aspen Plus and the following evaluation parameters were analyzed for a broad parameter range: reaction temperature (180-280 C), reaction pressure (10-80 bar), stoichiometry number (SN) (0-11), and CO 2 / (CO 2 + CO) molar feed ratio (0-1) for isothermal as well as adiabatic conditions. Based on the equilibrium yield, one-step DME synthesis was discovered as the most viable process to utilize the co-gasification derived syngas effectively. In the second part of our study, the overall process efficiency was inspected through the process design of 1 tonnes per day (TPD) DME plant inclusive of heat integration, resulting in significant CO 2 abatement and DME production with high product purity and minimum energy consumption. Consequently, one-step DME production via CO 2enriched syngas obtained through the coal or biomass gasification process is identified as the leading technology based on energy utilization and CO 2 abatement. K E Y W O R D SCO 2 rich syngas, dimethyl ether, methanol, plant design, thermodynamics

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Section: Resultsmentioning

confidence: 99%

Design framework for dimethyl ether (DME)production from coal and biomass‐derived syngas via simulation approach

et al. 2023

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“…After preheating the air and steam and powering the TR, the BTCLG system generates additional energy called “surplus energy”. , The surplus energy is the sensible heat in high-temperature syngas and flue gas, which the process cannot use without changing operating conditions but can be used by downstream processes or power generation equipment . The surplus energy was calculated using the following formula E normalS = E normals normaly normaln normalg normala normals + E normalw normala normals normalt normale .25em normalg normala normals .25em ( M J / h ) where E syngas and E waste gas are the sensible heat carried by the syngas and the flue gas, respectively.…”

Section: Methodsmentioning

confidence: 99%

“…38,52 The surplus energy is the sensible heat in hightemperature syngas and flue gas, which the process cannot use without changing operating conditions but can be used by downstream processes or power generation equipment. 54 The surplus energy was calculated using the following formula…”

Section: Process Performance Evaluationmentioning

confidence: 99%

Performance Evaluation of Torrefaction Coupled with a Chemical Looping Gasification Process under Autothermal Conditions: Flexible Syngas Production from Biomass

Liu

Zhang

et al. 2022

Energy Fuels

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Herein, a coupled biomass torrefaction and chemical looping gasification (BTCLG) process was proposed, and process simulations were performed under autothermal conditions. The effects of operational parameters on product distribution with torrefaction temperatures from 240 to 300 °C, gasification temperatures from 700 to 880 °C, and steam/biomass (S/B) ratios from 0.5 to 1.5 were explored. The results showed that the process could stably operate under autothermal conditions. Torrefaction increased the syngas yield, heating value, and cold gas efficiency by 12.44, 5.11, and 36.73%, respectively. Moreover, it reduced the bed material circulation rate required for autothermal operation by 59.03%. At the torrefaction temperature of 240 °C, the syngas yield reached a maximum value of 0.78 Nm 3 /kg. Increases in the gasification temperature also positively impacted syngas production. However, the optimal gasification temperature was 810 °C based on the bed material circulation rate constraint. The syngas H 2 /CO ratio could be flexibly adjusted from 1.62 to 3.34 by changing the S/B ratio to meet downstream demands. Overall, the simulation results support the technical viability and demonstrate the excellent performance of the BTCLG process compared to the biomass CLG process.

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“…Absorber and stripper See Table 4 and 5 electricity sales can influence the overall cost structure of providing district heat. The LCODH specifies a break-even cost for a unit district heat generation and is estimated as given in Equation ( 22) (modified from the equation given in the literature [54] ).…”

Section: Componentmentioning

confidence: 99%

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

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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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CO2 capture and utilization from supercritical coal direct chemical looping combustion power plant – Comprehensive analysis of different case studies

Cited by 16 publications

References 32 publications

Design framework for dimethyl ether (DME)production from coal and biomass‐derived syngas via simulation approach

Design framework for dimethyl ether (DME)production from coal and biomass‐derived syngas via simulation approach

Performance Evaluation of Torrefaction Coupled with a Chemical Looping Gasification Process under Autothermal Conditions: Flexible Syngas Production from Biomass

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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