{"id":2515,"date":"2026-09-11T20:58:53","date_gmt":"2026-09-12T01:58:53","guid":{"rendered":"https:\/\/www.cestoil.com\/?page_id=2515"},"modified":"2026-09-14T17:12:48","modified_gmt":"2026-09-14T22:12:48","slug":"cc827494-decalcification-sommaire","status":"publish","type":"page","link":"https:\/\/www.cestoil.com\/fr\/case-studies\/cc827494-crude-decalcification\/","title":{"rendered":"Northshore CC827494 : D\u00e9calcification sommaire"},"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 h1,.ccr-case h2{color:#253d4c;font-family:inherit;font-weight:700;text-transform:none;letter-spacing:normal}\n.ccr-case h1{font-size:clamp(32px,4vw,46px);line-height:1.18;max-width:980px;margin:16px 0 24px}\n.ccr-case h2{font-size:27px;line-height:1.3;margin:0 0 18px}.ccr-case p{margin:0 0 18px}.ccr-case p:last-child{margin-bottom:0}\n.ccr-case a{color:#755c23;text-underline-offset:3px}.ccr-case .ccr-breadcrumb{font-size:14px;color:#59676e;margin-bottom:28px}\n.ccr-case .ccr-label{font-size:13px;line-height:1.5;letter-spacing:.12em;text-transform:uppercase;font-weight:700;color:#755c23;margin-bottom:10px}\n.ccr-case .ccr-lead{font-size:21px;line-height:1.65;max-width:940px;margin-bottom:24px}\n.ccr-case .ccr-button{display:inline-block;background:#293f4e;color:#fff;padding:13px 24px;text-decoration:none;border-radius:3px;font-size:16px;line-height:1.5;font-weight:700}\n.ccr-case .ccr-button:hover{background:#385667}.ccr-case a:focus-visible{outline:3px solid #196aa3;outline-offset:4px}\n.ccr-case .ccr-highlight{margin:32px 0 24px;background:#f4f5f7;border-left:4px solid #c5a356;padding:24px 28px}\n.ccr-case .ccr-highlight strong{font-size:25px;line-height:1.35;color:#253d4c;display:block}.ccr-case .ccr-jump{display:flex;flex-wrap:wrap;gap:12px 24px;font-size:15px;border-bottom:1px solid #d8dde0;padding:0 0 24px}\n.ccr-case .ccr-section{display:grid;grid-template-columns:235px minmax(0,1fr);gap:42px;padding:34px 0;border-bottom:1px solid #e0e4e7;scroll-margin-top:130px}\n.ccr-case .ccr-section h2{font-size:24px}.ccr-case .ccr-result{border-top:3px solid #c5a356;border-bottom:1px solid #d8dde0;background:#fafaf8;padding:28px;margin:10px -28px}\n.ccr-case .ccr-request{padding:32px;background:#f4f5f7;margin:34px 0 24px;scroll-margin-top:130px}.ccr-case .ccr-request>p{max-width:860px;margin-bottom:22px}\n.ccr-case .ccr-small{font-size:14px;line-height:1.65;color:#59676e}.ccr-case .ccr-links{display:flex;flex-wrap:wrap;gap:12px 24px;font-size:16px}\n.ccr-case .ccr-hero{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:48px;align-items:start}\n.ccr-case .ccr-report-preview{padding:14px 6px 0;text-align:center}.ccr-case .ccr-preview-card{width:178px;max-width:100%;margin:0 auto;display:block;position:relative;background:#fff;padding:8px;border:1px solid #d8dde0;box-shadow:0 10px 28px rgba(37,61,76,.13);text-decoration:none}\n.ccr-case .ccr-preview-card img{display:block;width:100%;height:auto}.ccr-case .ccr-preview-card:hover{outline:2px solid #c5a356;outline-offset:3px}\n.ccr-case .ccr-preview-caption{font-size:14px;line-height:1.6;margin:16px 0 0;color:#59676e}.ccr-case .ccr-preview-caption strong{display:block;color:#253d4c;font-weight:700}\n@media(max-width:850px){.ccr-case .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\" data-preview-version=\"compact-v2\"><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><div class=\"ccr-hero\"><div><p class=\"ccr-label\">Vue d'ensemble de l'\u00e9tude de cas<\/p><h1>Northshore CC827494 : D\u00e9calcification sommaire<\/h1><p class=\"ccr-lead\">Une raffinerie traitant du brut \u00e0 forte teneur en calcium a \u00e9valu\u00e9 le produit Northshore CC827494 afin d'\u00e9liminer le calcium au niveau du train de dessalage et d'all\u00e9ger la charge en aval. Le programme suivi a permis d'\u00e9liminer en moyenne 83 % du calcium au cours des journ\u00e9es d'essai analys\u00e9es. Le client a \u00e9galement signal\u00e9 une teneur en calcium plus faible dans le catalyseur FCC \u00e0 l'\u00e9quilibre ainsi qu'une r\u00e9duction de la consommation de catalyseur frais. Au-del\u00e0 de ce r\u00e9sultat principal, cet exemple illustre comment des \u00e9quipements de dosage adapt\u00e9s, des donn\u00e9es sur la qualit\u00e9 de la charge et le suivi des effluents ont aid\u00e9 l'\u00e9quipe \u00e0 \u00e9laborer le programme de traitement.<\/p><a class=\"ccr-button\" href=\"https:\/\/www.cestoil.com\/fr\/demander-une-etude-de-cas\/?case=2515\">Demander l'\u00e9tude de cas compl\u00e8te<\/a><\/div><aside class=\"ccr-report-preview\" aria-label=\"Aper\u00e7u du rapport\"><a class=\"ccr-preview-card\" href=\"https:\/\/www.cestoil.com\/fr\/demander-une-etude-de-cas\/?case=2515\" aria-label=\"Demandez l&#039;\u00e9tude de cas compl\u00e8te Northshore CC827494\"><img loading=\"lazy\" src=\"https:\/\/www.cestoil.com\/wp-content\/uploads\/case-2515-compact-preview-v2.webp\" width=\"160\" height=\"208\" decoding=\"async\" alt=\"Aper\u00e7u r\u00e9duit d&#039;une page du rapport d&#039;\u00e9tude de cas Northshore CC827494\"><\/a><p class=\"ccr-preview-caption\"><strong>PDF illustr\u00e9 de 2 pages<\/strong>Rapport complet disponible sur approbation.<\/p><\/aside><\/div><aside class=\"ccr-highlight\" aria-label=\"Observation cl\u00e9\"><p class=\"ccr-label\">Northshore CC827494<\/p><strong>\u00c9limination moyenne du calcium signal\u00e9e de 83 %<\/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>Un contaminant en amont aux cons\u00e9quences en aval<\/h2><div><p>La raffinerie traitait une gamme de p\u00e9troles bruts offshore \u00e0 forte teneur en calcium, dont la concentration variait selon les m\u00e9langes. Son rapport attribuait les probl\u00e8mes li\u00e9s au calcium entrant \u00e0 une augmentation de la charge \u00e9lectrique et \u00e0 des d\u00e9clenchements du dessaleur, ainsi qu'au transfert de calcium vers les flux plus lourds alimentant l'unit\u00e9 de craquage catalytique en lit fluidis\u00e9 (FCC) en aval. L'usine recherchait une solution d'\u00e9limination du calcium compatible avec les \u00e9quipements de dessalage existants.<\/p><p>Les pr\u00e9occupations en aval englobaient \u00e9galement l'\u00e9tat du catalyseur. La raffinerie signalait une teneur \u00e9lev\u00e9e en calcium dans le catalyseur \u00e0 l'\u00e9quilibre, une consommation accrue de catalyseur frais et des difficult\u00e9s d'exploitation de l'unit\u00e9 FCC. Le projet a donc assur\u00e9 le suivi tant des performances du dessaleur que d'indicateurs sp\u00e9cifiques en aval. Cette approche \u00e9largie a permis au client de d\u00e9terminer si l'am\u00e9lioration de l'\u00e9limination des impuret\u00e9s en amont s'accompagnait de changements significatifs pour le reste de la raffinerie.<\/p><\/div><\/section><section class=\"ccr-section\" id=\"case-section-2\"><h2>Le r\u00f4le de Northshore CC827494<\/h2><div><p>Northshore CC827494 est un agent hydrosoluble d'\u00e9limination du calcium propos\u00e9 par Cestoil . Ce traitement a \u00e9t\u00e9 con\u00e7u pour transf\u00e9rer le calcium li\u00e9 aux compos\u00e9s liposolubles vers la phase aqueuse du dessaleur, permettant ainsi son \u00e9vacuation avec la saumure. Dans cette application, l'\u00e9limination chimique est venue compl\u00e9ter le proc\u00e9d\u00e9 de dessalage existant, plut\u00f4t que de reposer uniquement sur l'eau de lavage pour traiter la charge en calcium.<\/p><p>Le programme a mis en \u0153uvre une injection en amont des m\u00e9langeurs d'eau de lavage au sein d'une cha\u00eene de dessalage \u00e0 trois \u00e9tages, compl\u00e9t\u00e9e par l'ajout d'un adjuvant de pr\u00e9traitement au niveau de la pompe de charge de p\u00e9trole brut. Le dispositif de traitement dans son ensemble est d\u00e9terminant pour l'\u00e9valuation des r\u00e9sultats : les performances rapport\u00e9es sont propres \u00e0 cette application coordonn\u00e9e, incluant les \u00e9tapes de m\u00e9lange, la r\u00e9partition entre les \u00e9tages et le suivi op\u00e9rationnel.<\/p><\/div><\/section><section class=\"ccr-section\" id=\"case-section-3\"><h2>Le contr\u00f4le du comptage relevait de la maintenance sur site.<\/h2><div><p>Le traitement a d\u00e9but\u00e9 apr\u00e8s la remise en service de l'unit\u00e9 de distillation du brut \u00e0 l'issue de l'arr\u00eat technique. Au d\u00e9but du programme, les pompes doseuses dont disposait la raffinerie ne permettaient pas d'assurer la pr\u00e9cision de dosage requise. La source mentionne des difficult\u00e9s li\u00e9es au mat\u00e9riel ainsi qu'une injection excessive de produits chimiques comme des probl\u00e8mes devant \u00eatre corrig\u00e9s, alors que l'\u00e9quipe surveillait les r\u00e9sultats de s\u00e9paration et la qualit\u00e9 des effluents.<\/p><p>Cestoil a install\u00e9 des pompes doseuses d\u00e9di\u00e9es et l'\u00e9quipe a revu le mode d'application \u00e9tape par \u00e9tape. Le traitement a ensuite \u00e9t\u00e9 ajust\u00e9 tout en assurant le suivi des taux de calcium et de fer, des courants du dessaleur, du pH des effluents et de la demande chimique en oxyg\u00e8ne. Ce cas illustre pourquoi les \u00e9quipements d'injection et le suivi technique font partie int\u00e9grante de l'\u00e9valuation de la performance chimique : un dosage fiable a permis d'\u00e9valuer et d'optimiser le programme de mani\u00e8re plus pertinente.<\/p><\/div><\/section><section class=\"ccr-section ccr-result\" id=\"case-section-4\"><h2>R\u00e9sultat rapport\u00e9 : \u00e9limination moyenne du calcium de 83 %<\/h2><div><p>Sur les sept jours d'essai analys\u00e9s, le taux d'\u00e9limination du calcium a atteint une moyenne d'environ 83 % . Chacun de ces r\u00e9sultats journaliers a d\u00e9pass\u00e9 l'objectif d'\u00e9limination fix\u00e9 pour le projet. Les valeurs rapport\u00e9es ont vari\u00e9 en fonction des conditions d'essai, et le rapport d\u00e9taill\u00e9 inclut les mesures de calcium en entr\u00e9e et en sortie n\u00e9cessaires pour examiner ces \u00e9carts.<\/p><p>Le client a \u00e9galement signal\u00e9 une r\u00e9duction de l'intensit\u00e9 \u00e9lectrique au troisi\u00e8me \u00e9tage et une plus grande stabilit\u00e9 du fonctionnement du dessaleur apr\u00e8s le traitement. L'ajustement du dosage a permis d'am\u00e9liorer le pH et la demande chimique en oxyg\u00e8ne (DCO) des effluents, tout en maintenant une \u00e9limination efficace du calcium. Ces observations illustrent la raison pour laquelle l'\u00e9quipe a pris en compte simultan\u00e9ment l'\u00e9limination c\u00f4t\u00e9 hydrocarbures et les conditions c\u00f4t\u00e9 eau. L'objectif \u00e9tait de mettre en place un programme d'\u00e9limination efficace que la raffinerie pourrait exploiter tout en respectant les exigences globales de son proc\u00e9d\u00e9.<\/p><\/div><\/section><section class=\"ccr-section\" id=\"case-section-5\"><h2>En suivant l'effet vers l'unit\u00e9 FCC<\/h2><div><p>La raffinerie a fait \u00e9tat d'une teneur en calcium environ 80 % plus faible dans le catalyseur \u00e0 l'\u00e9quilibre ainsi que d'une consommation r\u00e9duite de catalyseur frais lors de la comparaison des performances en aval. Les indicateurs d'activit\u00e9 du catalyseur et de rendement en produits se sont \u00e9galement am\u00e9lior\u00e9s. Ces r\u00e9sultats conf\u00e8rent au cas une pertinence commerciale d\u00e9passant le cadre du dessalage, dans la mesure o\u00f9 le client cherchait \u00e0 r\u00e9soudre un probl\u00e8me de contamination affectant les \u00e9tapes de traitement ult\u00e9rieures.<\/p><p>Cette comparaison a \u00e9galement co\u00efncid\u00e9 avec des modernisations des \u00e9quipements de l'unit\u00e9 FCC et des modifications du d\u00e9bit de traitement. La raffinerie a attribu\u00e9 une grande partie de l'am\u00e9lioration \u00e0 l'\u00e9limination du calcium, tout en reconnaissant la contribution des modernisations. Les \u00e9volutions observ\u00e9es au niveau du catalyseur et des rendements doivent donc \u00eatre analys\u00e9es en tenant compte de ce contexte. Elles ne constituent pas une mesure isol\u00e9e de la contribution du produit chimique \u00e0 chacun des indicateurs de performance en aval.<\/p><\/div><\/section><section class=\"ccr-section\" id=\"case-section-6\"><h2>\u00c9laborer une comparaison \u00e9conomique utile<\/h2><div><p>Le rapport complet inclut l'estimation historique de la raffinerie concernant les \u00e9conomies sur les co\u00fbts de catalyseur ainsi que son estimation du co\u00fbt du programme de d\u00e9calcification. Ces chiffres reposent sur des bases de d\u00e9bit diff\u00e9rentes : la charge de l'unit\u00e9 FCC pour le calcul relatif au catalyseur et le d\u00e9bit de p\u00e9trole brut pour celui relatif au traitement. Il est n\u00e9cessaire d'examiner ces hypoth\u00e8ses avant de tirer une conclusion quant \u00e0 la valeur nette.<\/p><p>Pour une autre raffinerie, disposer en temps utile de donn\u00e9es sur la teneur en calcium du p\u00e9trole brut entrant constitue un point de d\u00e9part pratique. L'installation initiale avait identifi\u00e9 le retard dans la connaissance de la teneur en calcium de la charge comme un obstacle \u00e0 l'adaptation du traitement. Une nouvelle \u00e9valuation devrait \u00e9galement mettre en relation les changements de composition du brut, les relev\u00e9s de comptage et les \u00e9chantillons du dessaleur avec les m\u00e9taux pr\u00e9sents dans le catalyseur \u00e0 l'\u00e9quilibre, les ajouts de catalyseur et les rendements. Le suivi de ces indicateurs sur une p\u00e9riode d'exploitation appropri\u00e9e permet de distinguer une am\u00e9lioration durable d'un changement de proc\u00e9d\u00e9 ponctuel ou concomitant.<\/p><\/div><\/section><section class=\"ccr-request\" id=\"case-report\"><h2>Examinez les donn\u00e9es d'\u00e9limination et la comparaison en aval.<\/h2><p>Demandez l'\u00e9tude de cas compl\u00e8te pour examiner les r\u00e9sultats quotidiens d'\u00e9limination du calcium, les modifications apport\u00e9es \u00e0 l'injection et au dosage, les observations sur la qualit\u00e9 des effluents ainsi que les comparaisons \u00e9conomiques et relatives aux catalyseurs effectu\u00e9es par la raffinerie. Veuillez pr\u00e9ciser la plage de teneur en calcium de votre p\u00e9trole brut, la configuration de votre dessaleur et vos pr\u00e9occupations concernant les \u00e9tapes en aval, afin que Cestoil puisse \u00e9valuer la pertinence de ces donn\u00e9es pour votre application. Les informations relatives \u00e0 l'entreprise et \u00e0 l'utilisation pr\u00e9vue sont examin\u00e9es avant la communication du document PDF d\u00e9taill\u00e9.<\/p><a class=\"ccr-button\" href=\"https:\/\/www.cestoil.com\/fr\/demander-une-etude-de-cas\/?case=2515\">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 : Rapport d'essai client, division Raffinage, septembre-octobre 2008.<\/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 CC827494 a \u00e9t\u00e9 utilis\u00e9 dans le cadre d'un programme de dessalage surveill\u00e9 visant \u00e0 r\u00e9duire la quantit\u00e9 de calcium p\u00e9n\u00e9trant dans les \u00e9tapes de traitement en aval de la raffinerie.<\/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-2515","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 CC827494 was used in a monitored desalter program to reduce calcium entering downstream refinery processing. 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