Novel cryogenic carbon dioxide capture and storage process using LNG cold energy in a natural gas combined cycle power plant

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 456, P. 140980 - 140980

Published: Dec. 16, 2022

This study proposes a novel cryogenic CO2 capture and storage (CCS) process using liquefied natural gas (LNG) cold energy in combined cycle (NGCC) power plant. makes two major contributions to the literature. First, solid-phase CCS LNG can effectively reduce efficiency penalty NGCC plants by solving fundamental problems associated with conventional process: energy-intensive thermal treatment of monoethanolamine-based absorption significant consumption for compressing 150 bar. Second, requires minimal equipment installation plant integrating utilization processes. The proposed reduces from 14.34 % 3.51 %, 99.93 rate. We believe this will provide guideline reducing overcoming challenges process.

Language: Английский

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Oxy-fuel combustion-based blue hydrogen production with the integration of water electrolysis

Energy Conversion and Management, Journal Year: 2023, Volume and Issue: 291, P. 117275 - 117275

Published: June 15, 2023

Blue hydrogen is gaining attention as an intermediate step toward achieving eco-friendly green production. However, the general blue production requires energy-intensive process for carbon capture and storage, resulting in low efficiency. Additionally, processes, steam methane reforming (SMR) electrolysis, emits waste heat byproduct oxygen, respectively. To solve these problems, this study proposes oxy-fuel combustion-based that integrates fossil fuel-based electrolysis processes. The proposed processes are SMR + SOEC PEMEC, whereas SMR, solid oxide cell (SOEC), proton exchange membrane (PEMEC) also examined comparison. In oxygen produced by electrolyzer utilized combustion process, flue gas containing CO2 H2O condensed to easily separate CO2. from recovered feed water electrolyzer, thereby maximizing Techno-economic, sensitivity, greenhouse (GHG) analyses were conducted evaluate efficiency feasibility of results show demonstrated highest thermal (85.2%) exergy (80.5%), exceeding (78.4% 70.4% efficiencies, respectively). Furthermore, showed lowest levelized cost 6.21 USD/kgH2. Lastly, life cycle GHG emissions. conclusion, expected be a suitable technology transition gray hydrogen.

Language: Английский

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Techno-economic analysis of on-site blue hydrogen production based on vacuum pressure adsorption: Practical application to real-world hydrogen refueling stations

Journal of environmental chemical engineering, Journal Year: 2023, Volume and Issue: 11(2), P. 109549 - 109549

Published: Feb. 20, 2023

Although climate change can be efficiently curbed by shifting to low-carbon (blue) hydrogen as an energy carrier achieve carbon neutrality, current production mainly proceeds via the gray pathway, i.e., generates large amounts of CO2 a byproduct. To address need for cleaner production, we herein propose novel capture processes based on integration vacuum pressure swing adsorption into process and perform retrofitting blue on-site refueling stations. Techno-economic analysis reveals that implementation proposed allows one significantly reduce emission while preserving thermal efficiency, economic feasibility this in different scenarios is determined computing levelized cost hydrogen. As result, shown hold great promise realization sustainable usage net-zero transition.

Language: Английский

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Sustainable chemical recycling of waste plastics into olefins through low-pressure hydrothermal liquefaction and microwave pyrolysis: Techno-economic analysis and life cycle assessment

Energy Conversion and Management, Journal Year: 2024, Volume and Issue: 317, P. 118861 - 118861

Published: Aug. 2, 2024

Language: Английский

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Multiobjective Optimization of CO₂ Emission and Net Profit for a Naphtha Cracking Furnace Using a Deep Neural Network with a Nondominated Sorting Genetic Algorithm

ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: 12(7), P. 2841 - 2851

Published: Feb. 3, 2024

A naphtha-cracking furnace converts naphtha to ethylene (EL) and propylene (PL); the yields depend on coil outlet temperature (COT) composition. However, determining optimal COT for maximizing net profit is difficult because product price its composition fluctuate frequently. Moreover, CO2 emissions increase inevitably with increasing profit, which requires taking environmental aspects into account. Hence, this study proposes a multiobjective optimization model cracking by considering incompatible goals: maximization of minimization emissions. First, deep neural network (DNN)-based developed predict EL yield, PL given using 783 industrial data points. Second, combined nondominated sorting genetic algorithm (NSGA-II) obtain Pareto front various solutions. Finally, case studies are conducted different prices: was more expensive than in 2018; 2019; had similar prices 2020. For these three cases, actual applied model, solutions proposed. The representative each exhibit 5.35–6.14% higher profits 12.81–15.34% lower those data. proposed can help decision-makers providing flexible options modification production parameters, including regulations.

Language: Английский

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Multi-objective optimization for sustainable and economical polycarbonate production with reaction kinetics inference for real-world industrial process

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 490, P. 151484 - 151484

Published: April 25, 2024

Language: Английский

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A genetic algorithm-based optimal selection and blending ratio of plastic waste for maximizing economic potential

Process Safety and Environmental Protection, Journal Year: 2024, Volume and Issue: 186, P. 715 - 727

Published: April 6, 2024

Language: Английский

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Enhanced ammonia-cracking process via induction heating for green hydrogen: A comprehensive energy, exergy, economic, and environmental (4E) analysis

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 491, P. 151875 - 151875

Published: May 3, 2024

Language: Английский

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Application of starch-rich mango by-product as filler for the development of an additive manufacturing filament compound

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 260, P. 129519 - 129519

Published: Jan. 19, 2024

Language: Английский

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From sustainable macro debris chemical recycling to microplastic reclamation: Overview, research challenges, and outlook

Journal of Cleaner Production, Journal Year: 2024, Volume and Issue: 454, P. 142281 - 142281

Published: April 22, 2024

Language: Английский

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