LrgpV1, Main, Exploration, bibRecord, 000753

Simulation and kinetic study of transesterification of triolein to biodiesel using modular reactors

Identifieur interne : 000753 ( Main/Exploration ); précédent : 000752; suivant : 000754

Simulation and kinetic study of transesterification of triolein to biodiesel using modular reactors

Auteurs : Jean-François Portha [France] ; Florent Allain [France] ; Vincent Coupard [France] ; Aurélie Dandeu [France] ; Emilien Girot [France] ; Eric Schaer [France] ; Laurent Falk [France]

Source :

Chemical Engineering Journal [ 1385-8947 ] ; 2012-10-01.

RBID : Hal:hal-00777187

English descriptors

mix :
- Finite volume method, Heterogeneous catalytic reactors, Intensification, Series and parallel reversible reactions, Transesterification of biodiesel.

Abstract

A laboratory pilot unit has been developed to solve the issues of thermodynamic equilibrium shift for the transesterification of vegetable oil into biodiesel. It consists in a two stages continuous heterogeneous catalytic reactor operating at 50 bar and 175 degrees C. Under the working conditions, only one homogeneous phase can be assumed. The reactions of transesterification need a large excess of methanol implying an additional energy consumption and higher capital expenditure because of larger size of equipments, and operating pressure. In this work, a numerical model has been developed in order to better understand the different coupled phenomena (thermodynamic equilibrium, kinetics, mass transfer limitations, etc.) governing biodiesel production. The model is based on a heterogeneous plug flow reactor with axial dispersion taking into account mass transfer in the catalyst and dynamic aspects. The reactor is supposed isothermal since transesterification reactions are almost athermic. Kinetic parameters have been optimized by comparison with experimental results previously obtained by IFPEn. Simulation results are used to establish the future experimental conditions that will be used on the pilot unit. Mass transfer limitations are characterized by changing the diameter of catalyst particle. Concentration and reaction rate profiles are depicted in the fluid phase and in the catalyst. The simulations indicate that a conversion of triolein of 87% can be reached with a methanol to triolein molar ratio of 36 at reactor inlet and with a mean residence time of 1 h.

Url:

https://hal.archives-ouvertes.fr/hal-00777187

DOI: 10.1016/j.cej.2012.06.106

Affiliations:

Links toward previous steps (curation, corpus...)

to stream Hal, to step Corpus: 000A34
to stream Hal, to step Curation: 000A34
to stream Hal, to step Checkpoint: 000697
to stream Main, to step Merge: 000810
to stream Main, to step Curation: 000753

Le document en format XML

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<desc><address><country key="FR"></country>
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<country>France</country>
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<author><name sortKey="Dandeu, Aurelie" sort="Dandeu, Aurelie" uniqKey="Dandeu A" first="Aurélie" last="Dandeu">Aurélie Dandeu</name>
<affiliation wicri:level="1"><hal:affiliation type="laboratory" xml:id="struct-147985" status="VALID"><orgName>IFP Energies Nouvelles</orgName>
<orgName type="acronym">IFPEN</orgName>
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</hal:affiliation>
<country>France</country>
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</author>
<author><name sortKey="Girot, Emilien" sort="Girot, Emilien" uniqKey="Girot E" first="Emilien" last="Girot">Emilien Girot</name>
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<desc><address><addrLine>Université de Lorraine - ENSIC, 1 rue de Grandville BP 20451, 54001 Nancy Cedex</addrLine>
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<orgName>Université de Lorraine</orgName>
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<country>France</country>
<placeName><settlement type="city">Nancy</settlement>
<settlement type="city">Metz</settlement>
<region type="region" nuts="2">Grand Est</region>
<region type="old region" nuts="2">Lorraine (région)</region>
</placeName>
<orgName type="university">Université de Lorraine</orgName>
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<author><name sortKey="Schaer, Eric" sort="Schaer, Eric" uniqKey="Schaer E" first="Eric" last="Schaer">Eric Schaer</name>
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<country>France</country>
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<settlement type="city">Metz</settlement>
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<author><name sortKey="Falk, Laurent" sort="Falk, Laurent" uniqKey="Falk L" first="Laurent" last="Falk">Laurent Falk</name>
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<orgName>Laboratoire Réactions et Génie des Procédés</orgName>
<orgName type="acronym">LRGP</orgName>
<date type="start">2013-01-01</date>
<desc><address><addrLine>Université de Lorraine - ENSIC, 1 rue de Grandville BP 20451, 54001 Nancy Cedex</addrLine>
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<orgName>Université de Lorraine</orgName>
<orgName type="acronym">UL</orgName>
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<desc><address><addrLine>34 cours Léopold - CS 25233 - 54052 Nancy cedex</addrLine>
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</address>
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</hal:affiliation>
<country>France</country>
<placeName><settlement type="city">Nancy</settlement>
<settlement type="city">Metz</settlement>
<region type="region" nuts="2">Grand Est</region>
<region type="old region" nuts="2">Lorraine (région)</region>
</placeName>
<orgName type="university">Université de Lorraine</orgName>
<placeName><settlement type="city">Nancy</settlement>
<region type="region" nuts="2">Grand Est</region>
<region type="region" nuts="2">Lorraine (région)</region>
</placeName>
<orgName type="laboratoire" n="5">Laboratoire réactions et génie des procédés</orgName>
<orgName type="university">Université de Lorraine</orgName>
<orgName type="institution">Centre national de la recherche scientifique</orgName>
</affiliation>
</author>
</analytic>
<idno type="DOI">10.1016/j.cej.2012.06.106</idno>
<series><title level="j">Chemical Engineering Journal</title>
<idno type="ISSN">1385-8947</idno>
<imprint><date type="datePub">2012-10-01</date>
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<profileDesc><textClass><keywords scheme="mix" xml:lang="en"><term>Finite volume method</term>
<term>Heterogeneous catalytic reactors</term>
<term>Intensification</term>
<term>Series and parallel reversible reactions</term>
<term>Transesterification of biodiesel</term>
</keywords>
</textClass>
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<front><div type="abstract" xml:lang="en">A laboratory pilot unit has been developed to solve the issues of thermodynamic equilibrium shift for the transesterification of vegetable oil into biodiesel. It consists in a two stages continuous heterogeneous catalytic reactor operating at 50 bar and 175 degrees C. Under the working conditions, only one homogeneous phase can be assumed. The reactions of transesterification need a large excess of methanol implying an additional energy consumption and higher capital expenditure because of larger size of equipments, and operating pressure. In this work, a numerical model has been developed in order to better understand the different coupled phenomena (thermodynamic equilibrium, kinetics, mass transfer limitations, etc.) governing biodiesel production. The model is based on a heterogeneous plug flow reactor with axial dispersion taking into account mass transfer in the catalyst and dynamic aspects. The reactor is supposed isothermal since transesterification reactions are almost athermic. Kinetic parameters have been optimized by comparison with experimental results previously obtained by IFPEn. Simulation results are used to establish the future experimental conditions that will be used on the pilot unit. Mass transfer limitations are characterized by changing the diameter of catalyst particle. Concentration and reaction rate profiles are depicted in the fluid phase and in the catalyst. The simulations indicate that a conversion of triolein of 87% can be reached with a methanol to triolein molar ratio of 36 at reactor inlet and with a mean residence time of 1 h.</div>
</front>
</TEI>
<affiliations><list><country><li>France</li>
</country>
<region><li>Grand Est</li>
<li>Lorraine (région)</li>
</region>
<settlement><li>Metz</li>
<li>Nancy</li>
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<orgName><li>Centre national de la recherche scientifique</li>
<li>Laboratoire réactions et génie des procédés</li>
<li>Université de Lorraine</li>
</orgName>
</list>
<tree><country name="France"><region name="Grand Est"><name sortKey="Portha, Jean Francois" sort="Portha, Jean Francois" uniqKey="Portha J" first="Jean-François" last="Portha">Jean-François Portha</name>
</region>
<name sortKey="Allain, Florent" sort="Allain, Florent" uniqKey="Allain F" first="Florent" last="Allain">Florent Allain</name>
<name sortKey="Coupard, Vincent" sort="Coupard, Vincent" uniqKey="Coupard V" first="Vincent" last="Coupard">Vincent Coupard</name>
<name sortKey="Dandeu, Aurelie" sort="Dandeu, Aurelie" uniqKey="Dandeu A" first="Aurélie" last="Dandeu">Aurélie Dandeu</name>
<name sortKey="Falk, Laurent" sort="Falk, Laurent" uniqKey="Falk L" first="Laurent" last="Falk">Laurent Falk</name>
<name sortKey="Girot, Emilien" sort="Girot, Emilien" uniqKey="Girot E" first="Emilien" last="Girot">Emilien Girot</name>
<name sortKey="Schaer, Eric" sort="Schaer, Eric" uniqKey="Schaer E" first="Eric" last="Schaer">Eric Schaer</name>
</country>
</tree>
</affiliations>
</record>

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Simulation and kinetic study of transesterification of triolein to biodiesel using modular reactors

Simulation and kinetic study of transesterification of triolein to biodiesel using modular reactors

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