Heehyang Kim, JeHyeon Seong, Hosanna Uwitonze, Hankwon Lim
{"title":"Design consideration with dividing wall column for production of renewable olefins with economic, environmental, energy, and exergy (4Es) criteria","authors":"Heehyang Kim, JeHyeon Seong, Hosanna Uwitonze, Hankwon Lim","doi":"10.1016/j.jclepro.2025.145292","DOIUrl":null,"url":null,"abstract":"A clean and sustainable renewable olefins production process from waste CO<sub>2</sub> and green hydrogen (H<sub>2</sub>) was proposed in this research work. The proposed process includes CO<sub>2</sub> to methanol, methanol to olefins, and olefins separation steps. A heat integrated distillation column (i.e., dividing wall column, DWC) was included in olefins separation section to replace conventional distillation columns. A rigorous process model was modeled, and detailed simulation for mass and energy balances was performed on Aspen software, which is commercial software for process simulation. Furthermore, a comprehensive analysis was conducted in terms of economic, environment, energy, and exergy to assess the feasibility of the proposed process.In the scenario analysis for economic feasibility, the price range for the proposed process spanned from a minimum of 1.63 $ kg<sup>-1</sup> to a maximum of 7.78 $ kg<sup>-1</sup>. Additionally, the CO<sub>2</sub> emissions range spanning from 0.462 to 17.3 kgCO<sub>2</sub>eq kg oleinfs<sup>-1</sup> was determined in the environmental analysis. In both economic and environmental analyses, it was evident that the production of raw materials and electricity significantly influenced unit cost and CO<sub>2</sub> emissions. When these factors were altered in the scenario analysis, the aforementioned range could be derived. In terms of energy analysis, the technical results indicated that the energy efficiency of the proposed process was approximately 46.27%.","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"17 1","pages":""},"PeriodicalIF":9.7000,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Cleaner Production","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.1016/j.jclepro.2025.145292","RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, ENVIRONMENTAL","Score":null,"Total":0}
引用次数: 0
Abstract
A clean and sustainable renewable olefins production process from waste CO2 and green hydrogen (H2) was proposed in this research work. The proposed process includes CO2 to methanol, methanol to olefins, and olefins separation steps. A heat integrated distillation column (i.e., dividing wall column, DWC) was included in olefins separation section to replace conventional distillation columns. A rigorous process model was modeled, and detailed simulation for mass and energy balances was performed on Aspen software, which is commercial software for process simulation. Furthermore, a comprehensive analysis was conducted in terms of economic, environment, energy, and exergy to assess the feasibility of the proposed process.In the scenario analysis for economic feasibility, the price range for the proposed process spanned from a minimum of 1.63 $ kg-1 to a maximum of 7.78 $ kg-1. Additionally, the CO2 emissions range spanning from 0.462 to 17.3 kgCO2eq kg oleinfs-1 was determined in the environmental analysis. In both economic and environmental analyses, it was evident that the production of raw materials and electricity significantly influenced unit cost and CO2 emissions. When these factors were altered in the scenario analysis, the aforementioned range could be derived. In terms of energy analysis, the technical results indicated that the energy efficiency of the proposed process was approximately 46.27%.
期刊介绍:
The Journal of Cleaner Production is an international, transdisciplinary journal that addresses and discusses theoretical and practical Cleaner Production, Environmental, and Sustainability issues. It aims to help societies become more sustainable by focusing on the concept of 'Cleaner Production', which aims at preventing waste production and increasing efficiencies in energy, water, resources, and human capital use. The journal serves as a platform for corporations, governments, education institutions, regions, and societies to engage in discussions and research related to Cleaner Production, environmental, and sustainability practices.