{"id":1702,"date":"2026-09-05T17:20:17","date_gmt":"2026-09-05T22:20:17","guid":{"rendered":"https:\/\/cestoil.com\/?page_id=1702"},"modified":"2026-09-12T12:14:43","modified_gmt":"2026-09-12T17:14:43","slug":"entrainement-de-fer-lors-du-pretraitement-du-brut","status":"publish","type":"page","link":"https:\/\/www.cestoil.com\/fr\/case-studies\/crude-pretreatment-iron-carryover\/","title":{"rendered":"Northshore CC827600 : R\u00e9duction de l'entra\u00eenement de fer"},"content":{"rendered":"<div class=\"wpb-content-wrapper\" id=\"wpb-content-root\"><div class=\"vc_row wpb_row vc_row-fluid\"><div class=\"wpb_column vc_column_container vc_col-sm-12\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\">\n\t<div class=\"wpb_raw_code wpb_raw_html wpb_content_element\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<style>\n.ccr-case{max-width:1120px;margin:36px auto 70px;padding:0 24px;color:#414b53;font:18px\/1.75 Lato,Arial,sans-serif}\n.ccr-case *{box-sizing:border-box}.ccr-case 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.ccr-hero{grid-template-columns:1fr;gap:24px}.ccr-case .ccr-report-preview{width:248px;max-width:100%;margin:0 auto}}\n@media(max-width:800px){.ccr-case .ccr-section{grid-template-columns:1fr;gap:4px;padding:26px 0}.ccr-case .ccr-section h2{font-size:25px}.ccr-case .ccr-result{padding:24px;margin:8px -12px}.ccr-case{padding:0 18px}.ccr-case .ccr-lead{font-size:20px}.ccr-case .ccr-request{padding:24px}.ccr-case .ccr-highlight{padding:21px}.ccr-case .ccr-section,.ccr-case .ccr-request{scroll-margin-top:90px}}\n<\/style><article class=\"ccr-case\" data-summary-version=\"expanded-20260912\"><nav class=\"ccr-breadcrumb\" aria-label=\"Fil d&#039;Ariane\"><a href=\"\/fr\/etudes-de-cas\/\">\u00c9tudes de cas<\/a> \/ Solutions de proc\u00e9d\u00e9s de raffinage<\/nav><p class=\"ccr-label\">Vue d'ensemble de l'\u00e9tude de cas<\/p><h1>Northshore CC827600 : R\u00e9duction de l'entra\u00eenement de fer<\/h1><p class=\"ccr-lead\">La contamination en fer atteignant une unit\u00e9 de craquage catalytique fluide (FCC) peut trouver son origine en amont, avec des particules solides traversant l'\u00e9tape de pr\u00e9traitement du brut. Une raffinerie a \u00e9valu\u00e9 le produit Northshore CC827600 afin d'am\u00e9liorer l'\u00e9limination des mati\u00e8res ferrugineuses avant qu'elles ne se retrouvent dans le r\u00e9sidu de distillation sous vide. Le programme associait l'agent d'\u00e9limination du fer de Cestoil \u00e0 des ajustements du fonctionnement du dessaleur ainsi qu'\u00e0 un suivi sur site. La baisse de la teneur en fer dans le r\u00e9sidu sous vide observ\u00e9e durant le traitement continu, suivie d'une remont\u00e9e apr\u00e8s l'arr\u00eat de celui-ci, a fourni un \u00e9l\u00e9ment de comparaison op\u00e9rationnel utile pour l'\u00e9valuation effectu\u00e9e par la raffinerie.<\/p><a class=\"ccr-button\" href=\"https:\/\/www.cestoil.com\/fr\/demander-une-etude-de-cas\/?case=1702\">Demander l'\u00e9tude de cas compl\u00e8te<\/a><aside class=\"ccr-highlight\" aria-label=\"Observation cl\u00e9\"><p class=\"ccr-label\">Northshore CC827600<\/p><strong>R\u00e9duction de l'entra\u00eenement de fer vers l'unit\u00e9 FCC<\/strong><\/aside><nav class=\"ccr-jump\" aria-label=\"Sur cette page\"><a href=\"#case-section-1\">D\u00e9fi op\u00e9rationnel<\/a><a href=\"#case-section-3\">Mise en \u0153uvre sur le terrain<\/a><a href=\"#case-section-4\">R\u00e9sultats communiqu\u00e9s<\/a><a href=\"#case-report\">\u00c9tude de cas compl\u00e8te<\/a><\/nav><section class=\"ccr-section\" id=\"case-section-1\"><h2>Suivi du fer \u00e0 travers l'unit\u00e9 de distillation du brut<\/h2><div><p>La raffinerie cherchait \u00e0 r\u00e9soudre un probl\u00e8me de contamination persistante en fer de la charge alimentant l'unit\u00e9 de craquage catalytique en lit fluidis\u00e9 (FCC) situ\u00e9e en aval. Des solides inorganiques contenant du fer traversaient l'\u00e9tape de dessalage et se retrouvaient dans les flux les plus lourds de l'unit\u00e9 de distillation du brut. L'objectif du traitement \u00e9tait d'am\u00e9liorer la s\u00e9paration en amont afin de r\u00e9duire la quantit\u00e9 de fer transf\u00e9r\u00e9e vers la suite du proc\u00e9d\u00e9, plut\u00f4t que de compter uniquement sur une intervention au sein de l'unit\u00e9 FCC elle-m\u00eame.<\/p><p>Cet objectif impliquait bien plus que la simple mesure d'une teneur en fer. L'\u00e9quipe devait prendre en compte la s\u00e9paration des phases dans le dessaleur, ainsi que le rejet des solides s\u00e9par\u00e9s et des hydrocarbures entra\u00een\u00e9s dans les eaux us\u00e9es. Un programme qui am\u00e9liorerait un indicateur tout en complexifiant l'exploitation du syst\u00e8me de s\u00e9paration n\u00e9cessiterait des ajustements suppl\u00e9mentaires. Le cas a donc trait\u00e9 le choix des produits chimiques et le fonctionnement du dessaleur comme des \u00e9l\u00e9ments interd\u00e9pendants d'un m\u00eame probl\u00e8me.<\/p><\/div><\/section><section class=\"ccr-section\" id=\"case-section-2\"><h2>Pourquoi Northshore CC827600 a \u00e9t\u00e9 s\u00e9lectionn\u00e9<\/h2><div><p>Northshore CC827600 est l'agent de d\u00e9ferrisation du p\u00e9trole brut de Cestoil . Dans cette application, il a \u00e9t\u00e9 inject\u00e9 \u00e0 l'aspiration de la pompe \u00e0 brut, assurant ainsi un m\u00e9lange avant que le brut n'atteigne le dessaleur. L'objectif \u00e9tait d'aider le syst\u00e8me de pr\u00e9traitement existant \u00e0 s\u00e9parer les solides contenant du fer du flux de brut.<\/p><p>Le produit a \u00e9t\u00e9 \u00e9valu\u00e9 dans le contexte du syst\u00e8me d'\u00e9limination des solides r\u00e9ellement en place. Le compte rendu de l'essai fait \u00e9tat de perturbations initiales li\u00e9es \u00e0 l'\u00e9quipement \u00e0 ultrasons, suivies d'une optimisation de la formulation et de la poursuite de l'application sans cet \u00e9quipement. Cet aspect est important pour l'analyse du cas : le r\u00e9sultat final refl\u00e8te un programme \u00e9labor\u00e9 en r\u00e9ponse aux observations faites sur le terrain, prenant en compte tant le traitement que les modalit\u00e9s op\u00e9rationnelles lors de l'\u00e9valuation.<\/p><\/div><\/section><section class=\"ccr-section\" id=\"case-section-3\"><h2>Service technique au dessaleur<\/h2><div><p>Le personnel Cestoil et de la raffinerie a examin\u00e9 le niveau de l'interface, la pression diff\u00e9rentielle de la vanne de m\u00e9lange et le fonctionnement du lavage \u00e0 contre-courant. Chaque ajustement visait l'objectif pratique de s\u00e9parer et d'\u00e9vacuer les solides tout en assurant une s\u00e9paration efficace entre l'huile et l'eau. Le programme de suivi a permis d'observer les r\u00e9sultats \u00e0 mesure que le traitement chimique continu \u00e9tait mis en place.<\/p><p>Ces activit\u00e9s de service sont au c\u0153ur du dossier. L'injection de produits chimiques ne peut \u00eatre \u00e9valu\u00e9e ind\u00e9pendamment de la mani\u00e8re dont le dessaleur m\u00e9lange les flux entrants, maintient son interface et \u00e9vacue les mati\u00e8res accumul\u00e9es. L'\u00e9quipe de terrain a \u00e9tabli un lien entre ces conditions op\u00e9ratoires et l'\u00e9volution observ\u00e9e de la teneur en fer. Pour une autre raffinerie, la m\u00eame d\u00e9marche d\u00e9buterait par la prise en compte des contraintes propres au dessaleur et des caract\u00e9ristiques du brut entrant, puis s'appuierait sur un \u00e9chantillonnage coordonn\u00e9 pour \u00e9valuer la r\u00e9ponse \u00e0 chaque ajustement.<\/p><\/div><\/section><section class=\"ccr-section ccr-result\" id=\"case-section-4\"><h2>R\u00e9sultat rapport\u00e9 : teneur en fer r\u00e9duite dans le r\u00e9sidu de distillation sous vide<\/h2><div><p>Apr\u00e8s environ deux semaines de traitement continu, la teneur en fer relev\u00e9e dans le r\u00e9sidu sous vide est pass\u00e9e d'environ 15 ppm \u00e0 5\u20136 ppm. Apr\u00e8s l'arr\u00eat de l'injection du produit chimique, la concentration mesur\u00e9e est remont\u00e9e \u00e0 15\u201320 ppm. Ce retour \u00e0 la situation initiale apporte un \u00e9clairage utile sur les observations faites durant la p\u00e9riode de traitement et confirme l'efficacit\u00e9 de la combinaison du programme chimique et du programme op\u00e9rationnel.<\/p><p>Le point de pr\u00e9l\u00e8vement est important. Ces mesures caract\u00e9risent la teneur en fer du r\u00e9sidu sous vide, et non celle mesur\u00e9e directement sur le catalyseur FCC \u00e0 l'\u00e9quilibre. Elles mettent en \u00e9vidence une charge en fer plus faible en amont de l'unit\u00e9 situ\u00e9e en aval. Pour d\u00e9terminer l'incidence sur l'\u00e9tat du catalyseur, l'ajout de catalyseur ou les rendements en produits, il faudrait disposer des relev\u00e9s FCC correspondants et d'une p\u00e9riode de comparaison appropri\u00e9e.<\/p><\/div><\/section><section class=\"ccr-section\" id=\"case-section-5\"><h2>Pourquoi la s\u00e9quence d'op\u00e9rations est importante<\/h2><div><p>Il peut \u00eatre difficile d'interpr\u00e9ter une valeur faible isol\u00e9e lorsque la qualit\u00e9 du brut et les conditions de dessalage varient. Ce cas est instructif car il couvre une p\u00e9riode de traitement continu ainsi qu'une observation effectu\u00e9e apr\u00e8s l'arr\u00eat du traitement. L'analyse de cette s\u00e9quence, en tenant compte des ajustements op\u00e9rationnels, offre une base de discussion plus solide que la simple citation de la teneur en fer la plus basse relev\u00e9e.<\/p><p>Cela met \u00e9galement en \u00e9vidence une exigence op\u00e9rationnelle concr\u00e8te. Lorsqu'une raffinerie modifie la composition de ses charges de p\u00e9trole brut, la quantit\u00e9 et la nature des solides entrants peuvent varier en cons\u00e9quence. Les op\u00e9rateurs et le personnel technique doivent r\u00e9\u00e9valuer les performances de s\u00e9paration et d\u00e9terminer si les param\u00e8tres de traitement ou de dessalage n\u00e9cessitent un ajustement. Cette d\u00e9cision doit reposer sur une \u00e9valuation des r\u00e9sultats observ\u00e9s, plut\u00f4t que sur l'hypoth\u00e8se qu'un d\u00e9bit d'alimentation fixe conviendra \u00e0 tous les m\u00e9langes.<\/p><\/div><\/section><section class=\"ccr-section\" id=\"case-section-6\"><h2>Relier la performance du pr\u00e9traitement \u00e0 la valeur<\/h2><div><p>L'avantage op\u00e9rationnel d\u00e9montr\u00e9 a \u00e9t\u00e9 une r\u00e9duction de la teneur en fer v\u00e9hicul\u00e9e par le r\u00e9sidu sous vide au cours du programme de suivi. Une raffinerie \u00e9valuant la valeur commerciale peut utiliser ce r\u00e9sultat comme point de d\u00e9part pour une \u00e9valuation plus large, en mettant en relation les \u00e9chantillons en amont avec le suivi de sa propre charge et de ses catalyseurs en aval.<\/p><p>Les donn\u00e9es utiles comprennent la composition du p\u00e9trole brut, les teneurs en fer et en mati\u00e8res solides aux points d'\u00e9chantillonnage d\u00e9finis, les conditions d'interface et de m\u00e9lange au dessaleur, l'historique des contre-lavages ainsi que la consommation de produits chimiques. L'utilisation du catalyseur FCC et les donn\u00e9es relatives aux rendements en produits peuvent ensuite \u00eatre \u00e9valu\u00e9es ind\u00e9pendamment. Le r\u00e9sum\u00e9 de l'\u00e9tude disponible ne chiffrant pas les \u00e9conomies financi\u00e8res, il convient de comparer les co\u00fbts des produits chimiques et des services aux modifications v\u00e9rifi\u00e9es en aval avant d'attribuer un avantage \u00e9conomique.<\/p><\/div><\/section><section class=\"ccr-request\" id=\"case-report\"><h2>Examinez les \u00e9l\u00e9ments \u00e9tayant votre liste rudimentaire.<\/h2><p>Demandez une analyse technique pour examiner la s\u00e9quence de traitement et de soutirage, les points d'\u00e9chantillonnage, l'\u00e9laboration de la formulation et les r\u00e9glages du dessaleur associ\u00e9s \u00e0 ce cas. Veuillez vous munir de donn\u00e9es repr\u00e9sentatives sur le p\u00e9trole brut entrant ainsi que des relev\u00e9s concernant la teneur en fer qui suscitent des inqui\u00e9tudes ; ces \u00e9l\u00e9ments permettront de d\u00e9terminer si un programme d'\u00e9limination des solides en amont est adapt\u00e9 \u00e0 votre application. La documentation relative \u00e0 ce cas ant\u00e9rieur est soumise \u00e0 v\u00e9rification et disponibilit\u00e9 ; Cestoil pourra confirmer le contenu du dossier de rapport actuel lors de votre demande.<\/p><a class=\"ccr-button\" href=\"https:\/\/www.cestoil.com\/fr\/demander-une-etude-de-cas\/?case=1702\">Demander l'\u00e9tude de cas compl\u00e8te<\/a><p class=\"ccr-small\" style=\"margin-top:16px\">Les demandes sont examin\u00e9es avant la publication des rapports.<\/p><\/section><p class=\"ccr-small\">Source : R\u00e9sum\u00e9 de l'\u00e9tude de cas de la raffinerie Cestoil Northshore (CC827600) ; programme d'exploitation combinant traitement chimique et dessalage.<\/p><nav class=\"ccr-links\" aria-label=\"Pages connexes\"><a href=\"\/fr\/applications-des-produits\/solutions-de-procedes-de-raffinage\/\">D\u00e9couvrez les solutions de proc\u00e9d\u00e9s de raffinage<\/a><a href=\"\/fr\/etudes-de-cas\/\">Toutes les \u00e9tudes de cas<\/a><\/nav><\/article>\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div><\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Northshore CC827600 a \u00e9t\u00e9 utilis\u00e9, en conjonction avec des ajustements du fonctionnement du dessaleur, pour am\u00e9liorer la s\u00e9paration des solides contenant du fer lors du pr\u00e9traitement du p\u00e9trole brut.<\/p>","protected":false},"author":2,"featured_media":0,"parent":669,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_monsterinsights_skip_tracking":false,"footnotes":""},"class_list":["post-1702","page","type-page","status-publish","hentry","description-off"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO Pro 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"Northshore CC827600 was used with desalter operating adjustments to improve separation of iron-bearing solids during crude pretreatment. 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