Low temperature swing process for CO2 absorption-desorption using phase separation CO2 capture solvent

Machida, Hiroshi; Ando, Ryo; Esaki, Taito; Yamaguchi, Tsuyoshi; Horizoe, Hirotoshi; Kishimoto, Akira; Akiyama, Katsuya; Nishimura, Makoto

doi:10.1016/j.ijggc.2018.05.010

Cited by 57 publications

(49 citation statements)

References 23 publications

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“…3 If it is economically viable, capture of CO 2 from point sources like coal-fired power plants has potential to be a crucial part of the rate of global transition to a carbon-constrained world. 4 Materials advances in sorbents, [5][6][7][8][9] solvents, [10][11][12][13] and membranes [14][15][16][17] over the past two decades have been a chief focus of research on CO 2 capture from coal flue gas. Moreover, new process designs and intensification techniques have been considered to reduce the inherent energy consumption associated with these processes.…”

Section: Introductionmentioning

confidence: 99%

Analysis of energetics and economics of sub‐ambient hybrid post‐combustion carbon dioxide capture

et al. 2021

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Adsorption of CO 2 from post-combustion flue gas is one of the leading candidates for globally impactful carbon capture systems. This work focused on understanding the opportunities and limitations of sub-ambient CO 2 capture processes utilizing a multistage separation process. A hybrid process design using a combination of pressure-driven separation of CO 2 from flue gas (e.g., adsorption-or membrane-based separation) followed by CO 2 -rich product liquefaction to produce high-purity (>99%) CO 2 at pipeline conditions is considered. The operating pressure of the separation unit is a key cost parameter and also an important process variable that regulates the available heat removal necessary to reach the sub-ambient operating conditions. The economic viability of applying pressure swing adsorption (PSA) processes using fiber sorbent contactors with internal heat management was found to be most influenced by the productivity of the adsorption system, with productivities as high as 0.015 mol CO 2 /kg sorb À1 sec À1 being required to reduce costs of capture below $60/ ton CO 2 captured. This analysis was carried out using a simplified two-bed process, and thus there is opportunity for further cost reduction with exploration of more complex cycle designs. Three exemplar fiber sorbents (MIL-101(Cr), UiO-66, and zeolite 13X) were considered for application in the sub-ambient process of PSA unit.Among the considered sorbents, zeolite 13X fiber composites were found to perform better at ambient temperatures as compared to sub-ambient. MIL-101(Cr) and UiO-66 fiber composites had improved purity, recovery, and productivity at colder temperatures reducing costs of capture as low as $61/ton CO 2 . Future economic improvement could be achieved by reducing the required operating pressure of the PSA unit and pushing the Pareto frontier closer to the final pipeline requirement via a combination of PSA cycle design and material selection.

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Section: Introductionmentioning

confidence: 99%

Analysis of energetics and economics of sub‐ambient hybrid post‐combustion carbon dioxide capture

et al. 2021

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“…3 If it is economically viable, capture of CO 2 from point sources like coal-fired power plants has potential to be a crucial part of the global transition to a carbon-constrained world. 4 Materials advances in sorbents, [5][6][7][8][9] solvents, [10][11][12][13] and membranes [14][15][16][17] over the past two decades have been a chief focus of research on CO 2 capture from coal flue gas. Moreover, new process designs and intensification techniques have been considered to reduce the inherent energy consumption associated with these processes.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Energetics and Economics of Sub-ambient Hybrid Post-Combustion CO2 Capture

DeWitt

Awati

Landa

et al. 2021

Preprint

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Adsorption of CO2 from post-combustion flue gas is one of the leading candidates for globally-impactful carbon capture systems. This work highlights opportunities and limitations of sub-ambient CO2 capture processes utilizing a multi-stage separation process. A hybrid process design using a combination of pressure-driven separation of CO2 from flue gas followed by CO2-rich product liquefaction to produce high purity (>99%) CO2 at pipeline conditions is considered. The economic viability of applying pressure swing adsorption (PSA) processes using fiber sorbent contactors with internal heat management were found to be most influenced by the productivity of the adsorption system. Three exemplar fiber sorbents (MIL-101(Cr), UiO-66, and zeolite 13X) were considered for application in the sub-ambient process of PSA unit. MIL-101(Cr) and UiO-66 fiber composites were estimated to have costs of capture as low as $61/tonne CO2.

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“…They proposed and calculated the energy consumption of the new process with only the CO 2rich phase liquid transported to the generator and found that the input energy was reduced. [11] The key factors affecting the phase-separation absorbent (the CO 2 loading, temperature, and CO 2 partial pressure) were identified by experiment and modeling. [12] It was shown that the input sensible heat and evaporation were drastically reduced by phase separation induced by CO 2 absorption.…”

Section: Introductionmentioning

confidence: 99%

Rate of CO₂ absorption of a phase‐separation absorbent

Esaki

Machida

Norinaga

2019

J Adv Manuf & Process

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In this study, we evaluated the CO 2 absorption characteristics of a phase-separation amine absorbent. The phase-separation absorbent consists of a 30:60:10 (by weight percent) mixture of 2-(ethylamino)ethanol, diethylene glycol diethyl ether, and water. The CO 2 absorption rate of the phase-separation absorbent was measured in a lab-scale counter flow absorber. In addition, the CO 2 transport phenomena in the absorber were analyzed by performing model fitting. The experimental results revealed that the CO 2 absorption rates are different before and after phase separation. In fact, the overall CO 2 absorption capacity coefficient after phase separation is 4.5 times higher than that obtained before phase separation. By changing the gas-liquid ratio, we obtained a CO 2 recovery ratio of over 80% using the model. Thus, the absorption temperature, CO 2 loading, and gas-liquid ratio can be tuned to obtain the desired CO 2 recovery ratio.absorption rate, carbon capture and storage, CO 2 separation, phase-separation absorbent, process modeling, transport phenomena

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Low temperature swing process for CO2 absorption-desorption using phase separation CO2 capture solvent

Cited by 57 publications

References 23 publications

Analysis of energetics and economics of sub‐ambient hybrid post‐combustion carbon dioxide capture

Analysis of energetics and economics of sub‐ambient hybrid post‐combustion carbon dioxide capture

Analysis of Energetics and Economics of Sub-ambient Hybrid Post-Combustion CO2 Capture

Rate of CO₂ absorption of a phase‐separation absorbent

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Low temperature swing process for CO2 absorption-desorption using phase separation CO2 capture solvent

Cited by 57 publications

References 23 publications

Analysis of energetics and economics of sub‐ambient hybrid post‐combustion carbon dioxide capture

Analysis of energetics and economics of sub‐ambient hybrid post‐combustion carbon dioxide capture

Analysis of Energetics and Economics of Sub-ambient Hybrid Post-Combustion CO2 Capture

Rate of CO2 absorption of a phase‐separation absorbent

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Rate of CO₂ absorption of a phase‐separation absorbent