Improvement of 1,3-butadiene separation in 2,3-butanediol dehydration using extractive distillation
- Authors
- Song, Daesung; Yoon, Young-Gak; Seo, Seung-Kwon; Lee, Chul-Jin
- Issue Date
- Jul-2019
- Publisher
- MDPI AG
- Keywords
- 1,3-butadiene; 1-butene; 2,3-butanediol dehydration; Distillation; Economic feasibility; Extractive distillation
- Citation
- Processes, v.7, no.7
- Journal Title
- Processes
- Volume
- 7
- Number
- 7
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/33124
- DOI
- 10.3390/pr7070410
- ISSN
- 2227-9717
2227-9717
- Abstract
- This study was performed to investigate the extractive distillation for 1,3-butadiene (1,3-BD) purification as a part of the 2,3-butanediol (2,3-BDO) dehydration process. The separation of 1,3-BD from 1-butene produced as a 2,3-BDO dehydration by-product while using distillation is complicated due to the similar volatilities of the two compounds. Thus, an extractive distillation system is proposed for the effective recovery of 1,3-BD, and is compared with a conventional distillation system in terms of its performance and economic feasibility. A higher 1,3-BD recovery rate was achieved while using the proposed system and the relative profitabilities of both separation systems were analyzed according to the market price of 1,3-BD, which is a decisive variable for economic feasibility. © 2019 by the authors.
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