Modeling isobutene extraction from mixed C4-streams

Warnecke, Hans‐Joachim; Prüß, Jan; Bienek, B.; Presenti, R.G.

doi:10.1016/0009-2509(92)80003-u

Cited by 3 publications

(1 citation statement)

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“…The dehydration process has been investigated in several papers. Warnecke et al 1 examined the hydration of isobutene in sulfuric acid, focusing on equilibrium measurements under room-temperature conditions, without accounting for the activity of protons. Furthermore, a single chemical reaction path is assumed.…”

Section: Introductionmentioning

confidence: 99%

Modeling the Dehydration of tert-Butyl Alcohol and Avoidance of the Formation of Oligomers

Bothe¹,

Steinkemper²,

Warnecke³

2006

Ind. Eng. Chem. Res.

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To model the industrial relevant dehydration process of tert-butyl alcohol in sulfuric acid, a new mechanistic reaction scheme is applied that accounts for a parallel reaction path via di-tert-butyl ether (DTBE). Based on the quasi-steady-state approximation concerning intermediates, a mathematical model is developed that incorporates the acidity of the solvent. Model validation is performed by means of experimental data obtained from stationary continuously stirred tank reactor (CSTR) measurements at different temperatures under reaction conditions that exclude the formation of oligomers. It is shown how numerical simulations, combining this mathematical model with experimental correlations, allow for maximization of isobutene yield in a batch reactor in the regime where the formation of oligomers is avoided.

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Section: Introductionmentioning

confidence: 99%