<?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>2224-6185</journal-id>
<journal-title><![CDATA[Tecnología Química]]></journal-title>
<abbrev-journal-title><![CDATA[RTQ]]></abbrev-journal-title>
<issn>2224-6185</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Oriente]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2224-61852021000100075</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Métodos de solución para problemas de optimización multiobjetivo en refinerías de petróleo]]></article-title>
<article-title xml:lang="en"><![CDATA[Solution methods for multi-objective optimization problems in oil refineries]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cortés Martínez]]></surname>
<given-names><![CDATA[Roxana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramos Miranda]]></surname>
<given-names><![CDATA[Fernando E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González Suárez]]></surname>
<given-names><![CDATA[Erenio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Cienfuegos  ]]></institution>
<addr-line><![CDATA[Cienfuegos ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Central &#8220;Marta Abreu&#8221; de La Villas Facultad de Química y Farmacia ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2021</year>
</pub-date>
<volume>41</volume>
<numero>1</numero>
<fpage>75</fpage>
<lpage>91</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2224-61852021000100075&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2224-61852021000100075&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2224-61852021000100075&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN En este trabajo se aplican los métodos de solución para la optimización multiobjetivo para disminuir el consumo de la sosa cáustica en la etapa de tratamiento de la nafta inestable para la obtención de gas licuado del petróleo (GLP). Primeramente se conceptualizó sobre las ventajas y desventajas de los modelos y sobre los métodos de optimización. Con la cinética de las reacciones, datos del control operacional y datos económicos se obtuvieron tres funciones objetivos y sus respectivas restricciones para luego aplicar el método de optimización jerárquica. Se obtuvo que, con una concentración de sosa cáustica de 15 % peso y un tiempo de reacción de 15 min, en la mayoría de los casos se cumple con el parámetro de calidad de 140 ppm de azufre en el GLP y que en los casos donde no se cumple esta condición el producto debe ser recirculado para una nueva etapa de limpieza.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ ABSTRACT In this work, the solution methods for multiobjective optimization are applied to reduce the consumption of caustic soda at the stage of treatment of unstable naphtha to obtain liquefied petroleum gas (LPG). First, the advantages and disadvantages of the models and the optimization methods were conceptualized. With the kinetics of the reactions, operational control data and economic data, three objective functions and their respective restrictions were obtained and then applied the method of hierarchical optimization. It was obtained that, with a caustic soda concentration of 15 % weight and a reaction time of 15 min, in most cases the quality parameter of 140 ppm of sulfur in the LPG is met and that in cases where this condition is not met, the product must be recirculated for a new cleaning stage.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[optimización]]></kwd>
<kwd lng="es"><![CDATA[modelos matemáticos]]></kwd>
<kwd lng="es"><![CDATA[sosa cáustica]]></kwd>
<kwd lng="en"><![CDATA[optimization]]></kwd>
<kwd lng="en"><![CDATA[mathematical models]]></kwd>
<kwd lng="en"><![CDATA[caustic soda]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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