<?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>0123-921X</journal-id>
<journal-title><![CDATA[Tecnura]]></journal-title>
<abbrev-journal-title><![CDATA[Tecnura]]></abbrev-journal-title>
<issn>0123-921X</issn>
<publisher>
<publisher-name><![CDATA[Universidad Distrital Francisco José de Caldas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0123-921X2017000300015</article-id>
<article-id pub-id-type="doi">10.14483/udistrital.jour.tecnura.2017.3.a01</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Simulation of the styrene production process via catalytic dehydrogenation of ethylbenzene using CHEMCAD® process simulator]]></article-title>
<article-title xml:lang="es"><![CDATA[Simulación del proceso de producción del estireno mediante la deshidrogenación catalítica del etilbenceno utilizando el simulador CHEMCAD®]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez-Sánchez]]></surname>
<given-names><![CDATA[Amaury]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sánchez]]></surname>
<given-names><![CDATA[Eddy Javier Pérez]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Segura Silva]]></surname>
<given-names><![CDATA[Rutdali María]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Camagüey Facultad de Ciencias Aplicadas a la Industria ]]></institution>
<addr-line><![CDATA[Camagüey ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Empresa Industrial Ceballos  ]]></institution>
<addr-line><![CDATA[Ciego de Ávila ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Centro de Ingeniería Genética y Biotecnología  ]]></institution>
<addr-line><![CDATA[Camagüey ]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2017</year>
</pub-date>
<volume>21</volume>
<numero>53</numero>
<fpage>15</fpage>
<lpage>31</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0123-921X2017000300015&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0123-921X2017000300015&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0123-921X2017000300015&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background:  Process simulation has been extensively used in recent years to design, evaluate or optimize processes, systems and specific operations of the chemical industry and its related disciplines. Currently, CHEMCAD® constitute one of the most used process simulators because of the great number of chemical and petrochemical processes that can be simulated.  Method:  The simulation of the production process of styrene via catalytic dehydrogenation of ethyl-benzene is carried out by using the process simulator CHEMCAD® version 5.2.0, in order to determine the composition and mass flow-rate of each process involved in the production, as well as the main operating parameters of the equipment used. Two sensitivity studies were carried out: firstly, the influence of the temperature and pressure values applied at the LLV Separator on the amounts of ethyl-benzene and styrene to be obtained by the intermediate and top currents of this equipment; secondly, the influence of the operating pressure of the Distillation Column No. 1 (benzene-toluene column) on the quantity of ethyl-benzene and styrene obtained at the bottom stream. The simulating software MATLAB ® version 7.8.0 was used to process the results obtained.  Results:  Around 9234.436 kg/h of styrene is obtained in the last distillation column with 99.6% purity. Additionally, it was found that the water is the main impurity found on this stream, which represents 0.35% of the weight.  Conclusions:  The LLV Separator must operate at a low temperature (5 - 10 ºC) and at a relatively high pressure (10 bar), whereas the Distillation Column No. 1 must work at a pressure near atmospheric (1.0 bar), or preferably under vacuum conditions in order to obtain the highest yields of styrene and ethyl-benzene.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Contexto:  La simulación de procesos se ha venido utilizando extensivamente en los últimos años con el propósito de diseñar, evaluar u optimizar procesos, sistemas u operaciones específicos de la industria química y sus ramas afines. Uno de los simuladores de procesos más empleados en la actualidad es el CHEMCAD®, mediante el cual se pueden simular un gran número de procesos químicos y petroquímicos.  Método:  Se lleva a cabo la simulación del proceso de producción del estireno a partir de la deshidrogenación catalítica del etilbenceno, utilizando el simulador de procesos CHEMCAD® versión 5.2.0., con el fin de conocer la composición y el flujo másico de cada una de las corrientes de proceso, así como también los principales parámetros de operación de los equipos utilizados. Se efectuaron dos estudios de sensibilidad: 1) influencia de los valores de temperatura y presión aplicados en el Separador LLV sobre las cantidades de etilbenceno y estireno a obtener por la corriente intermedia y del tope de este equipo; y 2) influencia de la presión de operación de la Columna de Destilación No. 1 sobre la cantidad de estireno y etilbenceno que sale por el fondo de ésta. Se empleó además el simulador MATLAB®, versión 7.8.0, para procesar los resultados obtenidos  Resultados:  En la última columna de destilación se obtienen 9234.436 kg/h de estireno con un 99.6 % de pureza, siendo la principal impureza encontrada en esta corriente el agua, con 0.35% en masa.  Conclusiones:  El Separador LLV deberá operarse a una temperatura baja (5 - 10 ºC) y a una presión relativamente alta (10 bar), mientras que la Columna de Destilación No. 1 deberá operar a una presión cercana a la atmosférica (1.0 bar) o, preferiblemente, bajo condiciones de vacío, para obtener los mejores rendimientos de estireno y etilbenceno.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[CHEMCAD®]]></kwd>
<kwd lng="en"><![CDATA[sensitivity analysis]]></kwd>
<kwd lng="en"><![CDATA[simulation]]></kwd>
<kwd lng="en"><![CDATA[styrene]]></kwd>
<kwd lng="en"><![CDATA[yield]]></kwd>
<kwd lng="es"><![CDATA[análisis de sensibilidad]]></kwd>
<kwd lng="es"><![CDATA[CHEMCAD®]]></kwd>
<kwd lng="es"><![CDATA[estireno]]></kwd>
<kwd lng="es"><![CDATA[rendimiento]]></kwd>
<kwd lng="es"><![CDATA[simulación]]></kwd>
</kwd-group>
</article-meta>
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