Control properties of hybrid distillation processes for the separation of biobutanol

Abstract

BACKGROUND: Butanol produced from fermentation has attracted the interest of research groups because its physicochemical properties show several enhancements over bioethanol. Recent studies have proposed alternative methods to separate and purify biobutanol from a fermentation broth. These alternatives offer energy and economic savings; in addition, a reduction in environmental impact is observed. However few studies have analyzed the control properties of the process which involves separation of an acetone-butanol-ethanol (ABE) mixture.

Effects of intensification on process features and control properties of lignocellulosic bioethanol separation and dehydration systems

“…CS, DC, EDC, F, AC, SC, SR, rv, LF and BioEtOH stand for column section, distillation column, extractive distillation column, flash, absorption column, stripping column, side rectifier, ratio of vapor split, liquid flowrate split and bioethanol, respectively. [53] in comparison with results at high frequencies (high disturbances). However, even under these conditions, the systems are still feasible to be controlled but with a greater control effort.…”

“…The SVD technique is used in order to estimate the natural dynamic properties of a system. Numerous works show this technique as a good way to define the dynamics of a system, even with this kind of DWCs with single and double diving wall [37][38][39]. Foremost, the steady-state simulations of the distillation sequences are exported to Aspen Dynamics as flow-driven simulations.…”

5. Process synthesis and intensification of hybrid separations

“…Recently, the study of alternative configurations was completed by including the possibility of waste heat recovery [91] and proving their controllability [92].…”

Economic optimization of in situ extraction of inhibitors in acetone-ethanol-butanol (ABE) fermentation from lignocellulose

“…At the best of our knowledge, a scheme of production of ABE, butyric acid (BA), furans and phenolic compounds by liquid-liquid extraction has been not studied in the literature. Process modeling is an important tool to determinate the viability of new processes [25][26][27][28]. For these reasons, in this work, a detoxification system with simultaneous saccharification, fermentation, and extraction (SSF-E) ( Fig.…”