Process analysis and economic evaluation of mixed aqueous ionic liquid and monoethanolamine (MEA) solvent for CO 2 capture from a coke oven plant
Abstract
Abstract This study investigates the process and economic impacts of using an aqueous mixture of 1‐butylpyridinium tetrafluoroborate ([Bpy][BF4]) ionic liquid (IL) and monoethanolamine (MEA) as the solvent for CO2 capture from a coke‐oven plant. The gaps highlighted in the literature on the study of an aqueous mixture of IL and MEA for CO2 capture include lack of detailed process models or information on the impacts of varying the IL concentration on different process conditions and economics. This study addressed these needs by developing a rate‐based, solvent‐based CO2 capture process model with a mixed IL and MEA solvent and using the model to perform process and economic evaluations. The model was developed with Aspen Plus® and was used to investigate seven different aqueous mixtures of IL and MEA. The MEA concentration was 30 wt% for all the seven aqueous solvent mixtures, and the corresponding IL concentration was 0, 5, 10, 15, 20, 25 and 30 wt% for each combination. The hybrid IL solvent mixtures (i.e. 5–30 wt% IL) have 7–9% and 12–27% less regeneration energy and solvent circulation rate respectively compared to the base case (i.e. 30 wt% MEA). Based on a commercial‐scale cost benchmark for the IL, the initial solvent cost for the mixed solution is predictably higher. However, the solvent makeup cost is less for the mixed solvent. © 2018 Society of Chemical Industry and John Wiley & Sons, Ltd.
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The price used for DEPG solvent is comparable to the reported price for other solvents such as MEA.
“However, the price used is comparable to the reported for other solvents such as MEA [26].”
From Integration of hydrothermal liquefaction and carbon capture and storage for the production of advanced liquid biofuels with negative CO2 emissions (2020) · cites this paper as [26]
Section 6.1 (p. 23) uses an MEA price of US$1,250/ton, providing the reported price cited as a benchmark. The paper does not give a DEPG price or assess whether it is comparable to MEA’s price, so the comparison itself is not supported. (LLM, conf=0.82)
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- Authors
- Oko, E., Zacchello, B., Wang, M., & Fethi, A.
- Affiliations
- University of Sheffield (GB)
- Department of Mechanical and Energetics School of Engineering ENSIAME Valenciennes France
- Corresponding author
- Wang, Meihong
- Venue
- Greenhouse Gases Science and Technology
- Publisher
- Wiley
- Published
- 2018-04-16
- Volume
- 8
- Issue
- 4
- Pages
- 686-700
- ISSN
- 2152-3878 (ISSN-L)
- OpenAlex
- W2800445965
- Cited by
- 31
- References
- 39
- Citations by year
- 2026: 3 · 2025: 4 · 2024: 2 · 2023: 5 · 2022: 5 · 2021: 5 · 2020: 5 · 2019: 1 · 2018: 1
- FWCI
- 1.92
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Greenhouse Gases Science and Technology (publishedVersion)
- White Rose Research Online (University of Leeds, The University of Sheffield, University of York) (acceptedVersion)
- Funders
- EU FP7 International Research Staff Exchange Scheme (IRSES) (PIRSES-GA-2013-612230)
- Topics
- Physical Sciences › Engineering › Mechanical Engineering › Carbon Dioxide Capture Technologies
- Physical Sciences › Chemical Engineering › Catalysis › Ionic liquids properties and applications
- Physical Sciences › Engineering › Mechanical Engineering › Extraction and Separation Processes
- Keywords
- CO2 capture, ionic liquids, monoethanolamine, mixed solvents, coke oven plant, solvent regeneration, energy regeneration, process modeling, economic evaluation
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