電化深共晶溶媒ベース抽出蒸留による有機化合物の省エネ・低炭素回収
Energy-Efficient and Low-Carbon Recovery of Organic Compounds via Electrified Deep Eutectic Solvent-Based Extractive Distillation (原題)
Renting Li, Xinyuan Cheng, Sen Li, Yan Cheng, Xiao Wang, Jing Yang, Haigang Liu, Zhanhua Ma, Lanyi Sun, Jun Li
🤖 gxceed AI 要約
日本語
MEK-エタノール共沸混合物の分離にイミダゾール系深共晶溶媒（DES）を夾帯剤として適用し、VLE実験とNRTLモデル、量子化学計算で水素結合相互作用を解明した。DMSOプロセスと比較してDESプロセスは総年間費用・CO2排出・EI-99スコアを低減し、さらにフラッシュ蒸気圧縮ヒートポンプ（FVCHP）電化によりTAC・CO2・EI-99をそれぞれ5.81%、43.64%、50.71%削減できることを示した。
English
Imidazole-based deep eutectic solvents were used as entrainers for extractive distillation of the MEK-EtOH azeotrope, with VLE experiments, NRTL modeling, and quantum chemical analysis of hydrogen bonding. Compared with a DMSO process, the DES process lowered total annual cost, CO2 emissions, and Eco-indicator 99 score. Adding flash vapor compression heat pump electrification further cut TAC, CO2, and EI-99 by 5.81%, 43.64%, and 50.71%.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
化学産業の分離プロセス電化は日本の産業脱炭素（GX推進法・省エネ法）におけるScope1削減の重要レバーであり、電化とLCAを組み合わせた評価手法は国内製造業の脱炭素投資判断に示唆を与える。
In the global GX context
Industrial process electrification with integrated LCA is central to Scope 1 decarbonization pathways under ISSB/CSRD disclosure, offering a quantified template for low-carbon chemical separation that supports transition-plan credibility for hard-to-abate manufacturing.
👥 読者別の含意
🔬研究者:電化とDESを組み合わせた分離プロセスの多目的最適化・LCA統合手法の実証例として参照できる。
🏢実務担当者:化学・溶媒回収プロセスでのヒートポンプ電化によるコスト・CO2同時削減の投資根拠として活用できる。
🏛政策担当者:産業プロセス電化の省エネ・脱炭素効果を定量的に示す政策設計の参考になる。
📄 Abstract（原文）
Abstract Methyl ethyl ketone (MEK) and ethanol (EtOH) form an azeotrope at atmospheric pressure, making their effective separation and recovery by conventional distillation difficult. In this study, two imidazole-based deep eutectic solvents (DESs) were selected as entrainers for extractive distillation of the MEK-EtOH azeotrope. Their separation performance was evaluated by ternary vapor-liquid equilibrium (VLE) experiments, and the data were correlated using the non-random two-liquid (NRTL) model. Quantum chemical calculations revealed that strong hydrogen-bonding interactions between the DESs and azeotropic components are essential for efficient separation. Extractive distillation processes using dimethyl sulfoxide (DMSO) and the best-performing DES as entrainers were designed and optimized via multi-objective optimization coupled with multi-criteria decision-making. Life cycle assessment was performed using Eco-indicator 99 (EI-99). Compared with the DMSO-based process, the DES-based process achieved lower total annual cost (TAC), CO2 emissions (ECO2), and EI-99 score, but exhibited a relatively lower thermodynamic efficiency. Compared with the non-electrified DES-based process, the flash vapor compression heat pump (FVCHP)-electrified DES-based process reduced TAC, ECO2, and EI-99 by 5.81%, 43.64%, and 50.71%, respectively. This study offers a low-carbon and economical strategy for azeotrope separation.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1021/acssuschemeng.6c08298first seen 2026-11-12 04:56:32 · last seen 2026-11-13 05:09:19
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