Design and control of the glycerol tertiary butyl ethers process for the utilization of a renewable resource / Jian Kai Cheng in Industrial & engineering chemistry research, Vol. 50 N° 22 (Novembre 2011)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 50 N° 22 (Novembre 2011) . - pp. 12706-12716 Titre : Design and control of the glycerol tertiary butyl ethers process for the utilization of a renewable resource Type de document : texte imprimé Auteurs : Jian Kai Cheng, Auteur ; Cheng-Lin Lee, Auteur ; Yong-Tang Jhuang, Auteur Année de publication : 2012 Article en page(s) : pp. 12706-12716 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Design Résumé : In this paper, the design and control of an improved process for the manufacture of a fuel additive (glycerol tertiary butyl ethers, GTBE) from glycerol and isobutylene is developed. The improved process redirects one recycle stream, uses a stripping column instead of a flash tank to recover isobutylene, and uses a rectifying column instead of a distillation column to purify the product. Economic analysis shows that the improved process has a 22% lower total annual cost (TAC) than the best known process published in the literature. Significant increases in the selectivity of the overall process from 84.7% to 99.3% can also be realized by comparing the optimized improved design versus the original design. Dynamic simulations were also conducted and indicated that stringent product specification can be met with a simple decentralized feedback control structure despite impurities in the feed streams and also changes in the throughput. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie2010516 [article] Design and control of the glycerol tertiary butyl ethers process for the utilization of a renewable resource [texte imprimé] / Jian Kai Cheng, Auteur ; Cheng-Lin Lee, Auteur ; Yong-Tang Jhuang, Auteur . - 2012 . - pp. 12706-12716. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 22 (Novembre 2011) . - pp. 12706-12716 Mots-clés : Design Résumé : In this paper, the design and control of an improved process for the manufacture of a fuel additive (glycerol tertiary butyl ethers, GTBE) from glycerol and isobutylene is developed. The improved process redirects one recycle stream, uses a stripping column instead of a flash tank to recover isobutylene, and uses a rectifying column instead of a distillation column to purify the product. Economic analysis shows that the improved process has a 22% lower total annual cost (TAC) than the best known process published in the literature. Significant increases in the selectivity of the overall process from 84.7% to 99.3% can also be realized by comparing the optimized improved design versus the original design. Dynamic simulations were also conducted and indicated that stringent product specification can be met with a simple decentralized feedback control structure despite impurities in the feed streams and also changes in the throughput. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie2010516

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