<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>1665-2738</journal-id>
<journal-title><![CDATA[Revista mexicana de ingeniería química]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Mex. Ing. Quím]]></abbrev-journal-title>
<issn>1665-2738</issn>
<publisher>
<publisher-name><![CDATA[Universidad Autónoma Metropolitana, División de Ciencias Básicas e Ingeniería]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1665-27382014000200013</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Diseño de un proceso continuo de producción de biodiesel]]></article-title>
<article-title xml:lang="en"><![CDATA[Design of a continuous process of biodiesel production]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Evangelista-Flores]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alcántar-González]]></surname>
<given-names><![CDATA[F. S.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramírez de Arellano Aburto]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cohen Barki]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Robledo-Pérez]]></surname>
<given-names><![CDATA[J. M.]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cruz-Gómez]]></surname>
<given-names><![CDATA[M. J.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universidad Nacional Autónoma de México Facultad de Química Departamento de Ingeniería Química]]></institution>
<addr-line><![CDATA[México Distrito Federal]]></addr-line>
<country>México</country>
</aff>
<aff id="A02">
<institution><![CDATA[,Resinas y Materiales S.A. de C.V.  ]]></institution>
<addr-line><![CDATA[Tlalnepantla Estado de México]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2014</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2014</year>
</pub-date>
<volume>13</volume>
<numero>2</numero>
<fpage>483</fpage>
<lpage>491</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1665-27382014000200013&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1665-27382014000200013&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1665-27382014000200013&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[La mayoría de los procesos industriales de producción de biodiesel utilizados en el mundo se realizan empleando reactores por lotes o semi-continuos acoplados a equipos de separación de los productos, sin embargo; estos procesos tienen como desventaja el tiempo muerto así como el costo de operación de carga y descarga. El objetivo de este trabajo es proponer un proceso continuo de producción de biodiesel utilizando un reactor tubular de flujo continuo (RTFC) usando aceite vegetal, metanol y un catalizador homogéneo básico, cuya aplicación permita reducir costos de operación, mantenimiento y tiempo de producción. Se realizaron pruebas en el serpentín de un reactor industrial para obtener una cinética general de reacción y se estudió la transferencia de energía en el equipo con diferentes fluidos de calentamiento. Se consideró una producción de 500 toneladas mensuales de biodiesel en un reactor tubular de flujo continuo con geometría no lineal; una conversión mayor al 99% en un paso, temperaturas entre 60 y 75 °C, con recuperación del exceso de metanol y obtención de glicerina como subproducto de valor comercial.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Most of the industrial processes used for biodiesel production in the world are performed in batch or semicontinuous reactors coupled to separation equipment to obtain by-products, however, a disadvantage of these processes is the downtime as well as the cost of loading and unloading. The aim of this paper is to propose a continuous process for biodiesel production using a continuous flow tubular reactor (CFTR) using vegetable oil, methanol and a alkaline catalyst, whose application will reduce operating costs, maintenance and production time. Tests were conducted inside an industrial reactor's heating coil to obtain the reaction kinetics and to evaluate the equipment' s energy transfer with different heating fluids. The design parameters were considered to obtain a biodiesel production of 500 tons per month in a continuous flow tubular reactor with nonlinear geometry, a conversion in one step greater than 99%, temperatures between 60 and 75 ° C, with recovery of methanol and obtaining glycerin as a commercial by-product.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[biodiesel]]></kwd>
<kwd lng="es"><![CDATA[reactor continuo]]></kwd>
<kwd lng="es"><![CDATA[catálisis básica]]></kwd>
<kwd lng="es"><![CDATA[proceso industrial y aceite vegetal]]></kwd>
<kwd lng="en"><![CDATA[biodiesel]]></kwd>
<kwd lng="en"><![CDATA[continuous reactor]]></kwd>
<kwd lng="en"><![CDATA[alkaline catalysis]]></kwd>
<kwd lng="en"><![CDATA[industrial process]]></kwd>
<kwd lng="en"><![CDATA[vegetable oil]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p align="justify"><font face="verdana" size="4">Art&iacute;culos regulares/Cat&aacute;lisis, cin&eacute;tica y reactores</font></p>              <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>         <p align="center"><font face="verdana" size="4"><b>Dise&ntilde;o de un proceso continuo de producci&oacute;n de biodiesel</b></font></p>         <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>         <p align="center"><font face="verdana" size="3"><b>Design of a continuous process of biodiesel production</b></font></p>         <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>         <p align="center"><font face="verdana" size="2"><b>A. Evangelista&#45;Flores<sup>1</sup>, F. S. Alc&aacute;ntar&#45;Gonz&aacute;lez<sup>1</sup>, N. Ram&iacute;rez de Arellano Aburto<sup>2</sup>, A. Cohen Barki<sup>2</sup>, J. M. Robledo&#45;P&eacute;rez<sup>2</sup>, M. J. Cruz&#45;G&oacute;mez<sup>1</sup>*</b></font></p>         <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>         <p align="justify"><font face="verdana" size="2"><i><sup>1</sup> Departamento de Ingenier&iacute;a Qu&iacute;mica, Facultad de Qu&iacute;mica, Universidad Nacional Aut&oacute;noma de M&eacute;xico (UNAM) Conjunto E, L&#45;212, Ciudad Universitaria, M&eacute;xico D.F., 04360. *Autor para la correspondencia. E&#45;mail:</i> <a href="mailto:mjcg@servidor.ur">mjcg@servidor.ur</a> <i>Tel. (55) 56225359.</i></font></p>         <p align="justify"><font face="verdana" size="2"><i><sup>2</sup> Resinas y Materiales S.A. DE C. V. Blvd. M. Avila Camacho 1994, 54055. Col. Sam Lucas Tepetlacalco, Tlanepantla, Estado de M&eacute;xico.</i></font></p>         ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">&nbsp;</font></p>         <p align="justify"><font face="verdana" size="2">Recibido 26 de Junio, 2013.     <br>     Aceptado 13 de Marzo, 2014.</font></p>         <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>         <p align="justify"><font face="verdana" size="2"><b>Resumen</b></font></p>         <p align="justify"><font face="verdana" size="2">La mayor&iacute;a de los procesos industriales de producci&oacute;n de biodiesel utilizados en el mundo se realizan empleando reactores por lotes o semi&#45;continuos acoplados a equipos de separaci&oacute;n de los productos, sin embargo; estos procesos tienen como desventaja el tiempo muerto as&iacute; como el costo de operaci&oacute;n de carga y descarga. El objetivo de este trabajo es proponer un proceso continuo de producci&oacute;n de biodiesel utilizando un reactor tubular de flujo continuo (RTFC) usando aceite vegetal, metanol y un catalizador homog&eacute;neo b&aacute;sico, cuya aplicaci&oacute;n permita reducir costos de operaci&oacute;n, mantenimiento y tiempo de producci&oacute;n. Se realizaron pruebas en el serpent&iacute;n de un reactor industrial para obtener una cin&eacute;tica general de reacci&oacute;n y se estudi&oacute; la transferencia de energ&iacute;a en el equipo con diferentes fluidos de calentamiento. Se consider&oacute; una producci&oacute;n de 500 toneladas mensuales de biodiesel en un reactor tubular de flujo continuo con geometr&iacute;a no lineal; una conversi&oacute;n mayor al 99% en un paso, temperaturas entre 60 y 75 &deg;C, con recuperaci&oacute;n del exceso de metanol y obtenci&oacute;n de glicerina como subproducto de valor comercial.</font></p>              <p align="justify"><font face="verdana" size="2"><b>Palabras clave:</b> biodiesel, reactor continuo, cat&aacute;lisis b&aacute;sica, proceso industrial y aceite vegetal. </font></p>         <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>         <p align="justify"><font face="verdana" size="2"><b>Abstract</b></font></p>         <p align="justify"><font face="verdana" size="2">Most of the industrial processes used for biodiesel production in the world are performed in batch or semicontinuous reactors coupled to separation equipment to obtain by&#45;products, however, a disadvantage of these processes is the downtime as well as the cost of loading and unloading. The aim of this paper is to propose a continuous process for biodiesel production using a continuous flow tubular reactor (CFTR) using vegetable oil, methanol and a alkaline catalyst, whose application will reduce operating costs, maintenance and production time. Tests were conducted inside an industrial reactor's heating coil to obtain the reaction kinetics and to evaluate the equipment' s energy transfer with different heating fluids. The design parameters were considered to obtain a biodiesel production of 500 tons per month in a continuous flow tubular reactor with nonlinear geometry, a conversion in one step greater than 99%, temperatures between 60 and 75 &deg; C, with recovery of methanol and obtaining glycerin as a commercial by&#45;product.</font></p>              ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2"><b>Keywords:</b> biodiesel, continuous reactor, alkaline catalysis, industrial process, vegetable oil.</font></p>              <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>              <p align="justify"><font face="verdana" size="2"><a href="/pdf/rmiq/v13n2/v13n2a13.pdf" target="_blank">DESCARGAR ART&Iacute;CULO EN FORMATO PDF</a></font></p>         <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>         <p align="justify"><font face="verdana" size="2"><b>Referencias</b></font></p>              <!-- ref --><p align="justify"><font face="verdana" size="2">Cruz H.E. 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