{"id":117451,"date":"2015-08-05T00:00:00","date_gmt":"2015-08-05T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/valorization-of-scrap-tires-pyrolysis-oil-stpo-through-a-2-stage-hydrotreating-hydrocracking-strategy-process-variables-and-kinetic-modeling\/"},"modified":"2015-08-05T00:00:00","modified_gmt":"2015-08-05T00:00:00","slug":"valorization-of-scrap-tires-pyrolysis-oil-stpo-through-a-2-stage-hydrotreating-hydrocracking-strategy-process-variables-and-kinetic-modeling","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/procesos-quimicos\/valorization-of-scrap-tires-pyrolysis-oil-stpo-through-a-2-stage-hydrotreating-hydrocracking-strategy-process-variables-and-kinetic-modeling\/","title":{"rendered":"Valorization of scrap tires pyrolysis oil (stpo) through a 2-stage hydrotreating-hydrocracking strategy. process variables and kinetic modeling"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Idoia Hita Del Olmo <\/strong><\/h2>\n<p>Con objeto de contribuir a la gesti\u00c2\u00bfn sostenible de los neum\u00c2\u00bfticos usados y a la producci\u00c2\u00bfn de combustibles de alta calidad, se ha desarrollado una estrategia de hidroprocesado en dos etapas de un l\u00c2\u00bfquido de pirolisis de neum\u00c2\u00bfticos usados (scrap tires pyrolysis oil, stpo). En la primera etapa de hidrotratamiento se ha procesado el stpo, mientras que en la segunda etapa de hidrocraqueo se han tratado los productos de la primera etapa, con objeto de valorizar el stpo en cuanto a su contenido en (i) azufre (mediante hidrodesulfuraci\u00c2\u00bfn, hds), (ii) gasoil (mediante hidrocraqueo, hc), y (iii) arom\u00c2\u00bfticos (mediante hidrodesaromatizaci\u00c2\u00bfn, hda).Las etapas de hidroprocesado se han llevado a cabo en un reactor de lecho fijo bajo distintas condiciones de: temperatura, 300-500 \u00c2\u00bfc; presi\u00c2\u00bfn, 25-65 bar; y tiempo espacial 0-0.5 gcat h gstpo-1. En la primera etapa de hidrotratamiento se han empleado distintos catalizadores nimo sobre soportes micro- y mesopororos, correlacionando las distintas propiedades catal\u00c2\u00bfticas con las variables de proceso, mientras que en la segunda etapa se ha utilizado un \u00c2\u00bfnico catalizador de ptpd soportado sobre silico-al\u00c2\u00bfmina para profundizar en el efecto de las variables de proceso y la desactivaci\u00c2\u00bfn catal\u00c2\u00bftica. Como \u00c2\u00bfndices de reacci\u00c2\u00bfn se han definido conversiones de hds, hc y hda, basadas en el contenido de azufre, gasoil y arom\u00c2\u00bfticos, respectivamente. Mediante distintos esquemas cin\u00c2\u00bfticos se han calculado los correspondientes par\u00c2\u00bfmetros cin\u00c2\u00bfticos considerando la desactivaci\u00c2\u00bfn, para llevar a cabo una simulaci\u00c2\u00bfn en un amplio intervalo de condiciones de operaci\u00c2\u00bfn, determinando as\u00c2\u00bf las condiciones \u00c2\u00bfptimas.Los resultados obtenidos han permitido obtener una amplia perspectiva de las dos etapas de hidroprocesado para la valorizaci\u00c2\u00bfn del stpo, as\u00c2\u00bf como del efecto de las distintas propiedades catal\u00c2\u00bfticas de varios soportes, la naturaleza de la desactivaci\u00c2\u00bfn por deposici\u00c2\u00bfn de coque y los mecanismos cin\u00c2\u00bfticos que rigen cada proceso. Cabe rese\u00c2\u00bfar que, a trav\u00c2\u00bfs de este proceso, se ha conseguido eliminar pr\u00c2\u00bfcticamente por completo la fracci\u00c2\u00bfn gasoil del stpo, as\u00c2\u00bf como reducir su contenido de azufre a niveles por debajo de 15 ppm (cumpliendo as\u00c2\u00bf con los requerimientos legales medioambientales) y eliminar m\u00c2\u00bfs del 50 % de su contenido en arom\u00c2\u00bfticos. La eliminaci\u00c2\u00bfn casi total del azufre ha conseguido evitar la desactivaci\u00c2\u00bfn por envenenamiento. As\u00c2\u00bf, el catalizador se desactiva por deposici\u00c2\u00bfn de coque, fen\u00c2\u00bfmeno que se ha estudiado tanto cuantitativa como cualitativamente empleando diferentes t\u00c2\u00bfcnicas de caracterizaci\u00c2\u00bfn.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Valorization of scrap tires pyrolysis oil (stpo) through a 2-stage hydrotreating-hydrocracking strategy. process variables and kinetic modeling<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Valorization of scrap tires pyrolysis oil (stpo) through a 2-stage hydrotreating-hydrocracking strategy. process variables and kinetic modeling <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Idoia Hita Del Olmo <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Pa\u00eds vasco\/euskal herriko unibertsitatea<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 08\/05\/2015<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Pedro Casta\u00f1o Sanchez<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Juan  Antonio Melero hern\u00e1ndez <\/li>\n<li>martin Olazar aurrecoechea (vocal)<\/li>\n<li>gonzalo Prieto gonz\u00e1lez (vocal)<\/li>\n<li>raquel Iba\u00f1ez mendizabal (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Idoia Hita Del Olmo Con objeto de contribuir a la gesti\u00c2\u00bfn sostenible de los neum\u00c2\u00bfticos usados y [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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