Distillation process optimization for styrene production from a styrene-benzene-toluene system in a Petlyuk column

Parra-Santiago, Jonathan and Guerrero-Fajardo, Carlos Alberto and Sodre, Jose Ricardo (2015) Distillation process optimization for styrene production from a styrene-benzene-toluene system in a Petlyuk column. Chemical Engineering & Processing: Process Intensification, 98. pp. 106-111. ISSN 0255-2701

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Abstract

The conventional way to produce styrene is ethyl-benzene dehydrogenation, which generates benzene and toluene as byproducts. In general, the separation of these three components is made through successive reactor product distillation, first removing benzene and, then, separating toluene from benzene. The main problem with the use of conventional distillation columns is excessive energy
consumption in comparison with modern separation methods. This work simulates the conventional distillation system and the coupled column system (Petlyuk), in order to compare the benefits obtained on energy economy. The results show that, while the energy consumption to feed the boilers in the conventional distillation system is 2295 kW, for the Petlyuk system the energy consumption was
1554 kW, representing energy economy of 32.3%. Moreover, with application of this method higher purity
was obtained for toluene, from 76.19% to 99.67%, and for styrene, from 99.71% to 99.98%.

Item Type: Article
Uncontrolled Keywords: Styrene Petlyuk column Distillation Energy saving
Subjects: H100 General Engineering
H800 Chemical, Process and Energy Engineering
Divisions: Faculty of Computing, Engineering and the Built Environment
Faculty of Computing, Engineering and the Built Environment > School of Engineering and the Built Environment
Faculty of Computing, Engineering and the Built Environment > School of Engineering and the Built Environment > Advanced Systems Engineering
Depositing User: $ Ian McDonald
Date Deposited: 16 Dec 2016 15:01
Last Modified: 16 Dec 2016 15:10
URI: http://www.open-access.bcu.ac.uk/id/eprint/3731

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