Advanced post combustion CO2 capture process – A systematic approach to minimize thermal energy requirement

Sultan, Haider; Quach, Thai-Quyen; Ali, Hafız Muhammad; Bhatti, Umair H.; Lee, Young Duk; Hong, Min Gwan; Baek, Ill Hyun; Chan, Nam Sung

doi:10.1016/j.applthermaleng.2020.116285

Cited by 24 publications

(4 citation statements)

References 38 publications

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“…The rising trend of CO 2 concentration in the atmosphere has gained global attention on the greenhouse effect. − To overcome this challenge, decarbonization through the CO 2 capture and storage (CCS) technology is regarded as a crucial strategy to limit CO 2 emissions and reach carbon-neutrality. − Chemical solvent CO 2 absorption–desorption using aqueous monoethanolamine (MEA) is the most widely accepted technique for CO 2 separation technology due to the relatively high CO 2 absorption rate and capacity, excellent mass transfer, and low cost. ,, However, the high energy demand required for solvent regeneration, generated due to water evaporation and carbamate decomposition, indirectly results in CO 2 emission and consequently hinders the industrial application of amine-based CO 2 capture technology. − Therefore, it is of great importance to improve the energy economy of the amine regeneration process and then achieve green CO 2 capture.…”

Section: Introductionmentioning

confidence: 99%

Cerium-MOF-Derived Composite Hierarchical Catalyst Enables Energy-Efficient and Green Amine Regeneration for CO₂ Capture

Sun,

Gao,

Xiao

et al. 2024

Environ. Sci. Technol.

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The excessive energy consumed restricts the application of traditional postcombustion CO2 capture technology and limits the achievement of carbon-neutrality goals. Catalytic-rich CO2 amine regeneration has the potential to accelerate proton transfer and increase the energy efficiency in the CO2 separation process. Herein, we reported a Ce-metal–organic framework (MOF)-derived composite catalyst named HZ-Ni@UiO-66 with a hierarchical structure, which can increase the CO2 desorbed amount by 57.7% and decrease the relative heat duty by 36.5% in comparison with the noncatalytic monoethanolamine (MEA) regeneration process. The composite catalyst of the CeO2 coating from the UiO-66 precursor on the HZ-Ni carrier shows excellent stability with a long lifespan. The HZ-Ni@UiO-66 catalyst also shows a universal catalytic effect in typical blended amine systems with a large cyclic capacity. The HZ-Ni@UiO-66 catalyst effectively decreases the energy barrier of the CO2 desorption reaction to reduce the time required to reach thermodynamics, consequently saving the energy consumption generated by water evaporation. This research provides a new avenue for advancing amine regeneration with less heat duty at low temperatures.

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Section: Introductionmentioning

confidence: 99%

Cerium-MOF-Derived Composite Hierarchical Catalyst Enables Energy-Efficient and Green Amine Regeneration for CO₂ Capture

Sun,

Gao,

Xiao

et al. 2024

Environ. Sci. Technol.

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“…In addition, the energysaving potential of optimizing other operational parameters like the split ratio, stripper interheater location, and flow rate were explored by Sultan et al, 29 indicating that the optimal process reduced the regeneration energy needed by 14%. Sultan et al 30 also developed a new process modification approach. This approach was used to design an advanced process with lower regeneration energy.…”

Section: Introductionmentioning

confidence: 99%

Integrated Energy-Saving Superstructure and Optimization of the MEA-Absorption CO₂ Capture System in a Coal-Fired Power Plant

Ke-fang

Wang

et al. 2023

Energy Fuels

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Methods called superstructure optimization (i.e., design optimization to synthesize a system process and parameter synchronization) are applied to an integrated energy-saving system for CO2 capture in this paper. First, the schemes of energy recovery including lean solution, condensate, and overhead gas (CO2 + H2O stream) in 1 million ton annual output of a CO2 capture system are investigated. Integrated energy-saving and possible and optimal schemes for the CO2 capture system are proposed, and an integrated energy-saving superstructure that contains these possible schemes is established. Second, optimal mathematical models describing the superstructure are established. The integrated energy-saving schemes and thermodynamic properties are obtained through the optimization method. Finally, sensitivity analysis for the optimal integrated energy-saving schemes is performed. The best schemes of the integrated energy-saving CO2 capture system through the optimization method are summarized as follows: The fifth extracted steam expands to the best pressure in the BPT. Then, the exhaust steam releases heat to become the subcooled water and enters an absorption refrigerator. The waste heat of the overhead gas is recycled by the absorption refrigerator. The waste heat of the lean solution is recycled by enlarging the lean-rich solution heat exchanger. Compared to the original system, the energy-saving ratio of heat consumption is 18.55% and the energy-saving ratio of electric consumption is 59% in the best schemes. Moreover, the sensitivity analysis indicates that there are minor changes in the operating parameters when the variable factors (bank discount rate i, price change rate of electricity and fuel i R, and unit price of equipment) are within the variation range of 20%, but there is no effect of the variable factors on the optimal schemes.

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“…In addition to engineering improvements for process optimization, − much of the research has focused on formulating superior sorbents that would outperform the conventional aqueous MEA in terms of CO 2 absorption rate, cyclic capacity and regeneration heat requirement. In the past decade, blended aqueous alkanolamines, , biphasic absorbents, , and water-lean and nonaqueous absorbents, − have been thoroughly studied.…”

Section: Introductionmentioning

confidence: 99%

Unraveling the Role of Metal Oxide Catalysts in the CO₂ Desorption Process from Nonaqueous Sorbents: An Experimental Study Carried out with ¹³C NMR

Bhatti

Ienco

Peruzzini

et al. 2021

ACS Sustainable Chem. Eng.

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The CO2 desorption process from a CO2-saturated nonaqueous sorbent, 2-(2-aminoethoxy)ethanol (DGA) in diethylene glycol monomethyl ether (DEGMME), was investigated in the absence and presence of four different metal oxides, namely, V2O5, TiO2, WO3, and ZnO, aiming at identifying acid catalysts with the potential to reduce the energy demand for sorbent regeneration. The desorption performances of the DGA-DEGMME solutions with and without catalysts were evaluated in terms of CO2 desorption rate, overall CO2 desorbed, and thermal energy consumption. The desorption mechanism was understood by the 13C NMR speciation study of the solutions during the regeneration experiments. As a result, metal oxide catalysts, depending on the number and types of acidic sites on their surface, can accelerate the carbamate breakdown and the subsequent CO2 release. In particular, WO3 and TiO2 can be considered good candidates for implementation in CO2 capture processes with nonaqueous sorbents, as they greatly improved the desorption performance, and their structures remain unchanged before and after use. The combination of nonaqueous sorbents with catalysts, here reported for the first time, provides an effective strategy that could inspire the design of advanced sorbents for energy-efficient CO2 capture.

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Advanced post combustion CO2 capture process – A systematic approach to minimize thermal energy requirement

Cited by 24 publications

References 38 publications

Cerium-MOF-Derived Composite Hierarchical Catalyst Enables Energy-Efficient and Green Amine Regeneration for CO₂ Capture

Cerium-MOF-Derived Composite Hierarchical Catalyst Enables Energy-Efficient and Green Amine Regeneration for CO₂ Capture

Integrated Energy-Saving Superstructure and Optimization of the MEA-Absorption CO₂ Capture System in a Coal-Fired Power Plant

Unraveling the Role of Metal Oxide Catalysts in the CO₂ Desorption Process from Nonaqueous Sorbents: An Experimental Study Carried out with ¹³C NMR

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Advanced post combustion CO2 capture process – A systematic approach to minimize thermal energy requirement

Cited by 24 publications

References 38 publications

Cerium-MOF-Derived Composite Hierarchical Catalyst Enables Energy-Efficient and Green Amine Regeneration for CO2 Capture

Cerium-MOF-Derived Composite Hierarchical Catalyst Enables Energy-Efficient and Green Amine Regeneration for CO2 Capture

Integrated Energy-Saving Superstructure and Optimization of the MEA-Absorption CO2 Capture System in a Coal-Fired Power Plant

Unraveling the Role of Metal Oxide Catalysts in the CO2 Desorption Process from Nonaqueous Sorbents: An Experimental Study Carried out with 13C NMR

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Cerium-MOF-Derived Composite Hierarchical Catalyst Enables Energy-Efficient and Green Amine Regeneration for CO₂ Capture

Cerium-MOF-Derived Composite Hierarchical Catalyst Enables Energy-Efficient and Green Amine Regeneration for CO₂ Capture

Integrated Energy-Saving Superstructure and Optimization of the MEA-Absorption CO₂ Capture System in a Coal-Fired Power Plant

Unraveling the Role of Metal Oxide Catalysts in the CO₂ Desorption Process from Nonaqueous Sorbents: An Experimental Study Carried out with ¹³C NMR