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Design of a batch solvolytic liquefaction reactor for the valorization of residues from the agricultural foodstuff

Tejeda-Ricardez, Jesús Alberto and Vaca-Garcia, Carlos and Borredon, Marie-Elisabeth Design of a batch solvolytic liquefaction reactor for the valorization of residues from the agricultural foodstuff. (2003) Chemical Engineering Research and Design, 81 (9). 1066-1070. ISSN 0263-8762

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Official URL: https://doi.org/10.1205/026387603770866191

Abstract

Olive stone residues (23%wt) were liquefied in phenol (71%wt) in the presence of sulfuric acid (6%wt) as catalyst at 170°C during 2h. A 500 ml classic reactor under atmospheric conditions was used to establish the characteristics of the new 2001 liquefaction reactor. The liquefied products can be used as raw material for phenol-formaldehyde resins. The batch feeding procedure, the average temperature and the configuration of the reactor largely determined the viscosity and the molecular weight of the liquefied products. These parameters were positively modified by the constantly presence of olive stone moisture and water from depolymerization in the reaction medium. A jacketed cooling wall in the upper half of the 2001 reactor and a heat exchanger were necessary to accelerate vapour condensation, and to improve the contact in the reaction mixture. The recovery of liquefied products was also improved by using a closed container with a pressure-equalizing system that avoids the release of phenol vapour to the atmosphere.

Item Type:Article
HAL Id:hal-02080334
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
French research institutions > Institut National de la Recherche Agronomique - INRA (FRANCE)
Laboratory name:
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Deposited By: Yves MOMBOISSE
Deposited On:26 Mar 2019 15:23

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