本研究聚焦於高純度異丙醇（IPA）回收製程中電氣化減碳技術與經濟效益之系統性分析，選取二異丙醚共沸蒸餾、環己烷共沸蒸餾、二甲基亞碸萃取蒸餾、及其熱整合製程等四種具代表性流程。技術評估採用Aspen Plus 進行穩態模擬，經濟分析則基於2023 至2024 年間臺灣能源價格與電網碳排放因子，並參考國際能源總署及其他權威機構提供的低碳電力成本與碳排放數據。
研究結果顯示，熱泵輔助蒸餾結合電鍋爐系統（HPAD+EB）於環己烷共沸蒸餾、二異丙醚共沸蒸餾及二甲基亞碸萃取蒸餾三項製程中，在低成本風力電力支援下，不僅能顯著降低能源成本與碳排放，且碳減排成本（CAC）呈現負值，展現出優異的經濟與環境效益；而二甲基亞碸萃取蒸餾及其熱整合製程則主要表現於碳排放減量。相較之下，蒸汽熱泵系統（SGHP）於所有製程結合低碳電力時，均展現能源成本與碳排放的雙重下降優勢，整體能效及環境績效均優於HPAD+EB 系統。
綜合而言，本研究確認電氣化與熱泵技術在高純度IPA 回收製程中具顯著節能減碳成效，尤其在低碳電力的支持下，能有效降低生產成本與碳足跡。建議未來深化動態模擬與系統控制優化研究，以促進相關技術的商業化與產業應用，推動化工製程產業的綠色轉型與永續發展。

This study focuses on a systematic analysis of electrification-based carbon reduction technologies and economic benefits in the recovery process of high-purity isopropanol (IPA). Four representative processes are selected: diisopropyl ether(DIPE) azeotropic distillation, cyclohexane(CYH) azeotropic
distillation, dimethyl sulfoxide (DMSO) extractive distillation, and their heat-integrated configurations.
Technical evaluation is conducted through steady-state simulations using Aspen Plus, while the economic analysis is based on Taiwan＇s energy prices and grid carbon emission factors from 2023 to 2024. Additionally, data on low-carbon electricity costs and carbon emission metrics are referenced
from the International Energy Agency and other authoritative sources. The results indicate that the heat pump-assisted distillation combined with an electric boiler system (HPAD+EB) demonstrates outstanding economic and environmental performance in the processes of CYH azeotropic distillation,
DIPE azeotropic distillation, and DMSO extractive distillation. Under the support of low-cost wind power, this configuration significantly reduces both energy costs and carbon emissions, with a negative carbon abatement cost (CAC) observed. Meanwhile, the DMSO extractive distillation and its heat-integrated process mainly show notable improvements in carbon emission reduction. In comparison, the steam generation heat pump system (SGHP), when coupled with low-carbon electricity, consistently
achieves dual benefits of reduced energy costs and lower carbon emissions across all processes, with overall energy efficiency and environmental performance surpassing that of the HPAD+EB system.
In summary, this study confirms that electrification and heat pump technologies offer significant energy-saving and carbon-reducing potential in high-purity IPA recovery processes. With the support of low-carbon electricity, these technologies can effectively reduce both production costs and carbon
footprints. Future work is recommended to further explore dynamic simulations and system control optimization, in order to facilitate the commercialization and industrial adoption of these technologies, thereby promoting the green transformation and sustainable development of the chemical processing industry.