A process simulation study of CO 2 capture by ionic liquids

Ma, Tao; Wang, Jie‐Xin; Du, Zengzhi; Abdeltawab, Ahmed A.; Al-Enizi, Abdullah M.; Chen, Xiaochun; Yu, Guangren

doi:10.1016/j.ijggc.2017.01.017

Cited by 77 publications

(50 citation statements)

References 35 publications

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“…Eisinger and Keller conducted a similar study for ILs that undergo a liquid-solid phase change, however their economic assessment relies on vendor quotes. 26 Zhai 30 and de Riva for selected…”

Section: Introductionmentioning

confidence: 99%

Challenges and opportunities for the utilisation of ionic liquids as solvents for CO₂capture

Mota-Martinez

Brandl

Hallett

et al. 2018

Mol. Syst. Des. Eng.

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Ionic liquids (ILs) have the potential to outperform traditional solvents for CO2 capture, with a great many ILs having been studied to date. In this contribution we present a new approach for their evaluation, and identify which physical properties most infl uence their technical and economic performance. This work highlights a range of potential challenges that ionic liquids will face before they can be applied at process scale, and identifi es some key research opportunities. Ionic liquids have been extensively investigated as promising materials for several gas separation processes, including CO 2 capture. They have the potential to outperform traditional solvents, in terms of their capacity, selectivity, regenerability and stability. In fact, hundreds of ionic liquids have been investigated as potential sorbents for CO 2 capture. However, most studies focus on enhancing equilibrium capacity, and neglect to consider other properties, such as transport properties, and hence ignore the effect that the overall set of properties have on process performance, and therefore on cost. In this study, we propose a new methodology for their evaluation using a range of monetised and non-monetised process performance indices.Our results demonstrate that whilst most research effort is focused on improving CO 2 solubility, viscosity, a transport property, and heat capacity, a thermochemical property, might preclude the use of ionic liquids, even those which are highly CO 2 -philic, and therefore increased effort on addressing the challenges associated with heat capacity and viscosity is an urgent necessity. This work highlights a range of potential challenges that ionic liquids will face before they can be applied at process scale, and identifies some key research opportunities.

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Section: Introductionmentioning

confidence: 99%

Challenges and opportunities for the utilisation of ionic liquids as solvents for CO₂capture

Mota-Martinez

Brandl

Hallett

et al. 2018

Mol. Syst. Des. Eng.

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“…Current studies published regarding different IL‐based separation processes either emphasize on IL design or on process simulation with an improvement of energy‐reducing and cost‐saving . However, in our study, we have followed a multi‐scale research strategy which includes an extended database and models from the view molecular to the macroscopic engineering aspect.…”

Section: Introductionmentioning

confidence: 99%

Structure optimization of tailored ionic liquids and process simulation for shale gas separation

Chen

Zeng

et al. 2019

AIChE Journal

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Shale gas, as a potential substitute for energy source, requires important processing steps before utilization. The most common separation technology applied is distillation, which is energy-intensive. With good stability, non-volatility, and tailored properties, ionic liquids (ILs) are regarded as novel potential solvents and alternative media for gas absorption. Therefore, a new strategy for hybrid shale gas separation processing, where IL-based absorption together with distillation is employed for energy-efficient and cost-economic gas processing, is developed. In this work, a three-stage methodology for shale gas separation process is proposed: IL screening, where a systematic screening method with two options (database screening and computer-aided design based on universal quasichemical functional-group activity coefficient model) is established; suitable ILs are selected as promising candidates; process design and simulation, where separation schemes and important design issues in the IL-based processes are determined; and, process evaluation, where the performance of the final separation process is evaluated and verified. K E Y W O R D S design (process simulation), ionic liquids 1 | INTRODUCTION Coal has been a primary energy source since the industrial revolution. With increasing environmental pollution and decreasing energy sources, finding alternative energy sources is very important. With a large potential amount available for utilization, shale gas, as a kind of natural gas trapped within shale formations, has been receiving much

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“…Therefore, the process simulation using the Aspen Plus is a promising way to develop a detailed insight into a design and development of a process. 28,29 Recently, a few studies have been reported which employed the Aspen Plus to simulate the desulfurization process by ILs. [30][31][32][33] For example, Nancarrow et al, 32 used Aspen Plus to perform the process simulation and optimization of an industrial EDS with the [C n mim][NTF 2 ] series of ILs, and observed that such IL-based extraction as an intermediate treatment can reduce the S-content from 7000ppm to 50 ppm.…”

Section: Introductionmentioning

confidence: 99%

Coupled Oxidation-Extraction Desulfurization: A Novel Evaluation for Diesel Fuel

Gao

Chen

et al. 2019

ACS Sustainable Chem. Eng.

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In our previous experimental study, we have used a desulfurization method, i.e., coupled oxidation-extraction desulfurization. To develop a new insight into industrial-scale desulfurization process by this method, the process simulation study is of great importance. In this work, the industrial-scale of the coupled desulfurization processing of ULSD, wherein [C 1 pyr]H 2 PO 4 is employed in the oxidative desulfurization process and DMF is employed in the extractive desulfurization process, has been examined through the Aspen Plus simulation. Sensitivity of various operating conditions, i.e., IL-to-oil ratio, DMF-to-oil ratio, operating temperature and pressure has been analyzed. Subsequently, the economical comparison of the proposed process and HDS is compared synthetically. It is observed that coupled desulfurization method can effectively remove the S-compounds from the diesel fuel to meet the requirement of stringent legislation of less than 10 ppm. The main objectives of this work are; (i) to propose and design an industrial-scale process of the coupled oxidation-extraction desulfurization of diesel, (ii) to obtain the optimal operating conditions, thus enabling the simulation and optimization of this desulfurization process, and (iii) to verify the experimental results and evaluate the feasibility to scale-up this technology. To the best of our knowledge, it is the first time to design an industrial-scale process for the coupled oxidation-extraction desulfurization of diesel fuel.

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A process simulation study of CO 2 capture by ionic liquids

Cited by 77 publications

References 35 publications

Challenges and opportunities for the utilisation of ionic liquids as solvents for CO₂capture

Challenges and opportunities for the utilisation of ionic liquids as solvents for CO₂capture

Structure optimization of tailored ionic liquids and process simulation for shale gas separation

Coupled Oxidation-Extraction Desulfurization: A Novel Evaluation for Diesel Fuel

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A process simulation study of CO 2 capture by ionic liquids

Cited by 77 publications

References 35 publications

Challenges and opportunities for the utilisation of ionic liquids as solvents for CO2capture

Challenges and opportunities for the utilisation of ionic liquids as solvents for CO2capture

Structure optimization of tailored ionic liquids and process simulation for shale gas separation

Coupled Oxidation-Extraction Desulfurization: A Novel Evaluation for Diesel Fuel

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Product

Resources

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Challenges and opportunities for the utilisation of ionic liquids as solvents for CO₂capture

Challenges and opportunities for the utilisation of ionic liquids as solvents for CO₂capture