Design and Control of Glycerol-tert-Butyl Alcohol Etherification Process | Zendy

Elena Vlad | Zendy; Costin Sorin Bîldea | Zendy; Grigore Bozga | Zendy

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Design and Control of Glycerol-tert-Butyl Alcohol Etherification Process

Author(s) -

Elena Vlad,

Costin Sorin Bîldea,

Grigore Bozga

Publication year - 2012

Publication title -

the scientific world journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.453

H-Index - 93

eISSN - 2356-6140

pISSN - 1537-744X

DOI - 10.1100/2012/180617

Subject(s) - azeotrope , extractive distillation , glycerol , solvent , chemistry , distillation , catalysis , process engineering , chromatography , chemical engineering , organic chemistry , engineering

Design, economics, and plantwide control of a glycerol- tert -butyl alcohol (TBA) etherification plant are presented. The reaction takes place in liquid phase, in a plug flow reactor, using Amberlyst 15 as a catalyst. The products' separation is achieved by two distillation columns where high-purity ethers are obtained and a section involving extractive distillation with 1,4-butanediol as solvent, which separates TBA from the TBA/water azeotrope. Details of design performed in AspenPlus and an economic evaluation of the process are given. Three plantwide control structures are examined using a mass balance model of the plant. The preferred control structure fixes the fresh glycerol flow rate and the ratio glycerol + monoether : TBA at reactor-inlet. The stability and robustness in the operation are checked by rigorous dynamic simulation in AspenDynamics.

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