Novel pressure and temperature swing processes for CO2 capture using low viscosity ionic liquids

Zubeir, Lawien F.; Lacroix, Mark H.M.; Meuldijk, J.; Kroon, Maaike C.; Kiss, Anton A.

doi:10.1016/j.seppur.2018.04.085

Cited by 23 publications

(12 citation statements)

References 25 publications

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“…The results presented in Fig 9 show that the gas leaving the absorber (i.e., sweet gas) contains 0.5 mol% CO 2 , 0.04 mol% H 2 O, and 3.3 ppm H 2 S, which matches the results reported in the literature (0.4 mol% CO 2, 0.05 mol% H 2 O, and 2.5 ppm H 2 S) [ 35 ]. Increasing the MEG circulation rate decreases the amount of acidic gas in the sweetened gas stream as shown in Fig 9 .…”

Section: Resultssupporting

confidence: 85%

“…The simulation was conducted based on the conditions described above and the parameters presented in Table 5. The results presented in Fig 9 show that the gas leaving the absorber (i.e., sweet gas) contains 0.5 mol% CO 2 , 0.04 mol% H 2 O, and 3.3 ppm H 2 S, which matches the results reported in [35]. Increasing the MEG circulation rate decreases the amount of acidic gas in the sweetened gas stream as shown in Fig 9.…”

Section: Plos Onesupporting

confidence: 82%

“…Because DESs are not available in the ASPEN PLUS database, they have been defined as pseudo-components by defining their physicochemical properties. The process simulations were performed in the equation-oriented mode, which solves mass and energy balances while simultaneously avoiding nested convergence loops and is more effective for processes containing recycling streams and design specifications than those of the sequential modular mode [35]. The objective of the simulation was to test the effectiveness of the selected DESs in a closed loop process.…”

Section: S ðA=bþ ¼ H B H a ð1þmentioning

confidence: 99%

“…These coefficients were regressed from experimental data obtained in this work (S5 Table in S1 File). The remainder of the unknown properties including pseudo-critical properties, molar heat capacity, enthalpy of vaporization, and liquid vapor pressure of the DES pseudo-components were estimated by the methods and models implicitly used in Aspen Plus (S1, S6, S7, S8 and S9 Tables in S1 File); the same methodology was developed for IL S [35]. To the best of our knowledge, there are no publication regarding the process simulation of this family of DES.…”

Section: Plos Onementioning

confidence: 99%

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Polyethylene glycol-based deep eutectic solvents as a novel agent for natural gas sweetening

et al. 2020

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Deep eutectic solvents (DESs) have received significant attention as potential extracting agents in recent years due to their favorable characteristics including low cost, easy preparation and environmentally safe starting materials. Experimentally screening for highly efficient DESs meeting various requirements for natural gas sweetening remains a challenging task. Thus, an extensive database of estimated Henry's law constants (H i) and solubilities (x i) of CO 2 in 170 different DESs at 25˚C has been constructed using the COSMO-RS method to select potential DESs. Based on the COSMO-RS study, three DESs, namely tetrabutylammonium bromide (TBAB)+polyethylene glycol (PEG-8) (on a molar basis 1:4), TBAB+octanoic acid (OCT) (1:4), and methyltriphenylphosphonium bromide (MTPB)+PEG-8 (1:10), were chosen for further experimentation up to 2 bar at 25˚C using a vapor-liquid equilibria (VLE) apparatus. Reliable thermophysical properties were determined experimentally, and a detailed equilibrium-based model was developed for one of the glycol-based DESs (i.e., TBAB+PEG-8 (1:4)). This information is an essential prerequisite for carrying out process simulations of natural gas sweetening plants using ASPEN PLUS. The simulation results for the proposed DES were compared to those of monoethylene glycol (MEG). Here, we find that the aqueous TBAB+PEG-8 (1:4) solvent shows~60% lower total energy consumption and higher CO 2 removal when compared to those using the MEG solvent.

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Section: Resultssupporting

confidence: 85%

Section: Plos Onesupporting

confidence: 82%

Section: S ðA=bþ ¼ H B H a ð1þmentioning

confidence: 99%

Section: Plos Onementioning

confidence: 99%

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Polyethylene glycol-based deep eutectic solvents as a novel agent for natural gas sweetening

et al. 2020

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“…Other works have been focused on a single IL. Xie et al [45] suggested that if an IL were regenerated with the reduction of pressure at a fixed temperature, [ [46] reported that this last technology, combining pressure and temperature swing, has energetic and economic advantages for [C 6 mim][TCM] ionic liquid.…”

Section: Introductionmentioning

confidence: 99%

Surface-Response Analysis for the Optimization of a Carbon Dioxide Absorption Process Using [hmim][Tf2N]

Leonzio

Zondervan

2020

Processes

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The [hmim][Tf2N] ionic liquid is considered in this work to develop a model in Aspen Plus® capturing carbon dioxide from shifted flue gas through physical absorption. Ionic liquids are innovative and promising green solvents for the capture of carbon dioxide. As an important aspect of this research, optimization is carried out for the carbon capture system through a central composite design: simulation and statistical analysis are combined together. This leads to important results such as the identification of significant factors and their combinations. Surface plots and mathematical models are developed for capital costs, operating costs and removal of carbon dioxide. These models can be used to find optimal operating conditions maximizing the amount of captured carbon dioxide and minimizing total costs: the percentage of carbon dioxide removal is 93.7%, operating costs are 0.66 million €/tonCO2 captured (due to the high costs of ionic liquid), and capital costs are 52.2 €/tonCO2 captured.

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Carbon Dioxide Capturing in Temperature/Pressure Swing‐Commercial Processes Using Ionic Liquids

Rather,

Taimoor,

Saeed

et al. 2024

Chem Eng & Technol

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Capturing carbon dioxide is vital for mitigating global warming and supporting chemical processes. Ionic liquids (ILs) have emerged as promising solvents for CO2 capture. Using ASPEN simulation software, this study explores three specific ILs: [emim][triflate], [bmim][MeSO3], and [bmim][NTf2]. Their selection is based on exploitable differences in energy. The study models CO2 solubility and validates it against published data. It also considers the decomposition of ILs using a more accurate vapor loss model. Simulated equations predict CO2 and IL behavior more accurately than published ASPEN studies, optimizing the process for minimal energy consumption. Commercial considerations and rigorous engineering calculations guide the analysis, encompassing energy and economic factors.

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Novel pressure and temperature swing processes for CO2 capture using low viscosity ionic liquids

Cited by 23 publications

References 25 publications

Polyethylene glycol-based deep eutectic solvents as a novel agent for natural gas sweetening

Polyethylene glycol-based deep eutectic solvents as a novel agent for natural gas sweetening

Surface-Response Analysis for the Optimization of a Carbon Dioxide Absorption Process Using [hmim][Tf2N]

Carbon Dioxide Capturing in Temperature/Pressure Swing‐Commercial Processes Using Ionic Liquids

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