{"id":26046,"date":"2016-06-08T05:21:04","date_gmt":"2016-06-08T05:21:04","guid":{"rendered":"http:\/\/blogs.thesocialmedia.com\/leblogenergie\/?p=26046"},"modified":"2016-06-08T13:19:29","modified_gmt":"2016-06-08T13:19:29","slug":"un-elegant-procede-pour-passer-du-gaz-aux-liquides","status":"publish","type":"post","link":"https:\/\/blogs.thesocialmedia.com\/leblogenergie\/2016\/06\/08\/un-elegant-procede-pour-passer-du-gaz-aux-liquides\/","title":{"rendered":"Un \u00e9l\u00e9gant proc\u00e9d\u00e9 pour passer du gaz aux liquides"},"content":{"rendered":"<p>L&rsquo;abondance des r\u00e9serves de gaz naturel dans le monde laisse \u00e0 penser qu&rsquo;un jour \u00e0 venir, \u00e0 la fin de ce si\u00e8cle\u00a0ou durant le si\u00e8cle prochain, les proc\u00e9d\u00e9s de la famille GTL (gas to liquid) contribueront pour une\u00a0 part significative et rentable \u00e0 l&rsquo;approvisionnement en carburants liquides du monde.<\/p>\n<p>Une large part de ces proc\u00e9d\u00e9s reposent aujourd&rsquo;hui sur la m\u00e9thode Fisher-Tropsch qui consiste \u00e0 d\u00e9grader profond\u00e9ment\u00a0 un gaz naturel, en gaz \u00e0 l&rsquo;eau ou syngas (CO + nH2) pour ensuite construire difficilement une cha\u00eene aliphatique qu&rsquo;il faut, \u00e0 son tour, par hydrocracking et isom\u00e9risation, transformer et valoriser dans une unit\u00e9 p\u00e9trochimique pour atteindre en qualit\u00e9,\u00a0 les m\u00e9langes d&rsquo;hydrocarbures d\u00e9sir\u00e9s. C&rsquo;est un proc\u00e9d\u00e9 global qui par nature est de tr\u00e8s faible efficacit\u00e9 \u00e9nerg\u00e9tique. Certains perfectionnements japonais consistent, \u00e0 ce jour sur pilote, \u00e0 remplacer <a href=\"http:\/\/www.leblogenergie.com\/2009\/04\/19\/du-gaz-au-liquide-par-la-methode-japonaise-un-exemple-de-management-de-projet-sur-une-decennie\/\" target=\"_blank\">une part de l&rsquo;eau par du CO2 <\/a>qui apporte \u00e0 la fois l&rsquo;oxyg\u00e8ne d\u00e9sir\u00e9 et des atomes de carbone suppl\u00e9mentaires.<\/p>\n<p>Il apparait donc aujourd&rsquo;hui un cr\u00e9neau technologique destin\u00e9 \u00e0 d\u00e9velopper des proc\u00e9d\u00e9s, de type GTL, plus subtils et moins \u00e9nergivores que ceux existants, pour passer du gaz naturel abondant aux plus rares et plus on\u00e9reux carburants liquides, largement utilis\u00e9s dans les transports terrestres, a\u00e9riens et maritimes .<\/p>\n<p>La collaboration entre l&rsquo;am\u00e9ricain <strong>Siluria Technologies<\/strong> et le <strong>Groupe Air Liquide<\/strong> illustre parfaitement cette possibilit\u00e9 de passer du m\u00e9thane aux chaines aliphatiques complexes des carburants avec le moins possible de d\u00e9gradations et donc avec le plus d&rsquo;efficacit\u00e9 \u00e9nerg\u00e9tique.<\/p>\n<p>Ce proc\u00e9d\u00e9 repose sur un couplage catalytique oxydatif de la mol\u00e9cule de m\u00e9thane (OCM) en \u00e9thyl\u00e8ne selon la r\u00e9action exothermique globale:<\/p>\n<h2 style=\"text-align: center;\"><span style=\"color: #ff0000;\"><strong>2 CH4 + O2 &#8212;&#8212;&#8212;&gt; CH2=CH2 + 2H2O<\/strong><\/span><\/h2>\n<p>Cette <a href=\"http:\/\/www.leblogenergie.com\/2011\/07\/10\/pour-une-chimie-raisonnee-autour-du-co2\/\" target=\"_blank\">r\u00e9action du m\u00e9thane \u00e0 l&rsquo;\u00e9thyl\u00e8ne est une oxydation limit\u00e9e \u00e0 deux \u00e9lectrons<\/a>\u00a0par atome de m\u00e9thane.<\/p>\n<p>Puis en reprise, l&rsquo;\u00e9thyl\u00e8ne est polym\u00e9ris\u00e9 sur catalyseurs pour atteindre les divers carburants d\u00e9sir\u00e9s (FIG.)<\/p>\n<p>LIRE<a href=\"http:\/\/siluria.com\/Newsroom\/Press_Releases\" target=\"_blank\"> l&rsquo;annonce du 7 Juin 2016 de la collaboration entre SILURIA et AIR LIQUIDE <\/a><\/p>\n<p>VOIR <a href=\"http:\/\/siluria.com\/Technology\/Oxidative_Coupling_of_Methane\" target=\"_blank\">la description du proc\u00e9d\u00e9 OCM de Siluria.<\/a><\/p>\n<p>Le 8 Juin 2016<\/p>\n","protected":false},"excerpt":{"rendered":"<p>L&rsquo;abondance des r\u00e9serves de gaz naturel dans le monde laisse \u00e0 penser qu&rsquo;un jour \u00e0 venir, \u00e0 la fin de ce si\u00e8cle\u00a0ou durant le si\u00e8cle prochain, les proc\u00e9d\u00e9s de la famille GTL (gas to liquid) contribueront pour une\u00a0 part significative et rentable \u00e0 l&rsquo;approvisionnement en carburants liquides du monde. Une large part de ces proc\u00e9d\u00e9s [&hellip;]<\/p>\n","protected":false},"author":341,"featured_media":26047,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[2207],"class_list":["post-26046","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-energie-fossile","tag-slider"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Un \u00e9l\u00e9gant proc\u00e9d\u00e9 pour passer du gaz aux liquides - leblogenergie.com<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blogs.thesocialmedia.com\/leblogenergie\/2016\/06\/08\/un-elegant-procede-pour-passer-du-gaz-aux-liquides\/\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"Un \u00e9l\u00e9gant proc\u00e9d\u00e9 pour passer du gaz aux liquides - leblogenergie.com\" \/>\n<meta name=\"twitter:description\" content=\"L&rsquo;abondance des r\u00e9serves de gaz naturel dans le monde laisse \u00e0 penser qu&rsquo;un jour \u00e0 venir, \u00e0 la fin de ce si\u00e8cle\u00a0ou durant le si\u00e8cle prochain, les proc\u00e9d\u00e9s de la famille GTL (gas to liquid) contribueront pour une\u00a0 part significative et rentable \u00e0 l&rsquo;approvisionnement en carburants liquides du monde. 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