{"id":2496,"date":"2026-09-11T19:53:22","date_gmt":"2026-09-12T00:53:22","guid":{"rendered":"https:\/\/www.cestoil.com\/?page_id=2496"},"modified":"2026-09-12T14:50:12","modified_gmt":"2026-09-12T19:50:12","slug":"inhibition-synergique-par-le-styrene-de-gcd2673","status":"publish","type":"page","link":"https:\/\/www.cestoil.com\/fr\/case-studies\/gcd2673-styrene-synergistic-inhibition\/","title":{"rendered":"Northshore GCD2673 : Inhibition synergique lors de la distillation du styr\u00e8ne"},"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 pour les proc\u00e9d\u00e9s p\u00e9trochimiques<\/nav><div class=\"ccr-hero\"><div><p class=\"ccr-label\">Vue d'ensemble de l'\u00e9tude de cas<\/p><h1>Northshore GCD2673 : Inhibition synergique lors de la distillation du styr\u00e8ne<\/h1><p class=\"ccr-lead\">Un producteur de styr\u00e8ne souhaitait r\u00e9duire le co\u00fbt de son programme d'utilisation d'inhibiteurs de polym\u00e9risation tout en maintenant l'efficacit\u00e9 de l'inhibition et la qualit\u00e9 du produit. Cestoil a propos\u00e9 d'ajouter le Northshore GCD2673 en compl\u00e9ment de l'inhibiteur existant, puis d'\u00e9valuer une r\u00e9duction contr\u00f4l\u00e9e de la teneur r\u00e9siduelle en inhibiteur. Au cours d'un essai industriel d'un mois, le client a constat\u00e9 une r\u00e9duction d'environ 35 % de la teneur en gommes dans les r\u00e9sidus de fond de la colonne primaire, tout en pr\u00e9servant la qualit\u00e9 du produit. Cet exemple illustre comment la s\u00e9quence de traitement et les contr\u00f4les op\u00e9rationnels quotidiens ont facilit\u00e9 l'\u00e9valuation, par l'usine, d'un programme d'inhibition combin\u00e9.<\/p><a class=\"ccr-button\" href=\"https:\/\/www.cestoil.com\/fr\/demander-une-etude-de-cas\/?case=2496\">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=2496\" aria-label=\"Demandez l&#039;\u00e9tude de cas compl\u00e8te Northshore GCD2673\"><img loading=\"lazy\" src=\"https:\/\/www.cestoil.com\/wp-content\/uploads\/case-2496-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 GCD2673\"><\/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 GCD2673<\/p><strong>R\u00e9duction de 35 % des signalements de gomme au fond<\/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>Le co\u00fbt d'un programme utilisant uniquement des ralentisseurs<\/h2><div><p>Le complexe p\u00e9trochimique exploitait une cha\u00eene de distillation du styr\u00e8ne compos\u00e9e de quatre colonnes. Le programme en vigueur reposait sur l'utilisation d'un inhibiteur de polym\u00e9risation commercial, avec maintien d'une concentration r\u00e9siduelle importante dans les fonds de la colonne primaire. Le service technique de l'usine a identifi\u00e9 la consommation de cet inhibiteur comme un poste de co\u00fbt de production significatif et a souhait\u00e9 \u00e9tudier une solution de traitement plus \u00e9conomique.<\/p><p>La r\u00e9duction des co\u00fbts devait \u00eatre envisag\u00e9e conjointement avec la protection du proc\u00e9d\u00e9. L'usine devait contr\u00f4ler la formation de polym\u00e8res et de gommes ind\u00e9sirables tout en assurant le bon fonctionnement de la colonne, la gestion des goudrons et la qualit\u00e9 du styr\u00e8ne. R\u00e9duire le dosage de l'inhibiteur sans plan de traitement suivi n'aurait pas permis de r\u00e9pondre \u00e0 ces enjeux. L'\u00e9valuation a donc port\u00e9 sur la capacit\u00e9 du programme combin\u00e9 \u00e0 permettre une teneur r\u00e9siduelle plus faible tout en pr\u00e9servant les performances op\u00e9rationnelles requises.<\/p><\/div><\/section><section class=\"ccr-section\" id=\"case-section-2\"><h2>Combinaison Northshore GCD2673 avec le retardateur actuellement utilis\u00e9<\/h2><div><p>Cestoil a propos\u00e9 le GCD2673 comme inhibiteur dans le cadre d'un programme synergique, tout en conservant le retardateur d\u00e9j\u00e0 en usage. Cette approche conf\u00e9rait aux deux produits des r\u00f4les compl\u00e9mentaires dans la ma\u00eetrise de la polym\u00e9risation. Lors de l'essai industriel, le retardateur a \u00e9t\u00e9 maintenu dans le programme d'exploitation tout au long de l'\u00e9valuation.<\/p><p>\u00c0 la suite d'\u00e9valuations techniques impliquant Cestoil et le fournisseur de l'inhibiteur, le service de recherche et l'unit\u00e9 d'exploitation de l'usine ont \u00e9labor\u00e9 le protocole d'essai. Le plan associait les modifications de la consigne de l'inhibiteur aux analyses quotidiennes des r\u00e9sidus de fond et au suivi du proc\u00e9d\u00e9. Cette approche a permis d'\u00e9valuer le programme de traitement dans sa globalit\u00e9, tout en laissant \u00e0 l'usine la ma\u00eetrise des conditions op\u00e9ratoires \u00e0 chaque \u00e9tape.<\/p><\/div><\/section><section class=\"ccr-section\" id=\"case-section-3\"><h2>D\u00e9terminer la r\u00e9ponse avant de r\u00e9duire le retardateur<\/h2><div><p>Le GCD2673 a \u00e9t\u00e9 introduit dans l'alimentation de la colonne primaire via une boucle d'\u00e9chantillonnage ferm\u00e9e existante, tandis que l'injection du retardateur se poursuivait au point \u00e9tabli, pr\u00e8s du sommet de la colonne. L'\u00e9quipe a initialement maintenu le d\u00e9bit de retardateur inchang\u00e9, ce qui a permis d'observer la r\u00e9ponse initiale de la gomme avant d'entamer la r\u00e9duction du retardateur.<\/p><p>La consigne de l'inhibiteur a ensuite \u00e9t\u00e9 abaiss\u00e9e par paliers, chaque palier \u00e9tant maintenu et v\u00e9rifi\u00e9 avant l'ajustement suivant. L'essai s'est d\u00e9roul\u00e9 de fin juin \u00e0 fin juillet 2019. Les analyses quotidiennes et les observations op\u00e9rationnelles ont port\u00e9 sur la teneur r\u00e9siduelle en inhibiteur, les gommes et polym\u00e8res, les temp\u00e9ratures et pressions de la colonne, le comportement des goudrons ainsi que la qualit\u00e9 du produit. Le rapport complet conserve la chronologie n\u00e9cessaire pour comprendre le lien entre ces mesures et les modifications du traitement.<\/p><\/div><\/section><section class=\"ccr-section ccr-result\" id=\"case-section-4\"><h2>R\u00e9sultat signal\u00e9 : gencive inf\u00e9rieure<\/h2><div><p>Quelques jours seulement apr\u00e8s l'introduction du GCD2673, la teneur en gommes mesur\u00e9e dans les r\u00e9sidus de fond de la colonne primaire est pass\u00e9e d'environ 367 \u00e0 240 mg\/100 mL, soit une r\u00e9duction d'environ 35 % . Cette baisse a \u00e9t\u00e9 observ\u00e9e avant la premi\u00e8re r\u00e9duction du dosage de l'inhibiteur de polym\u00e9risation, et les niveaux de gommes sont rest\u00e9s inf\u00e9rieurs \u00e0 la valeur de r\u00e9f\u00e9rence obtenue avec l'inhibiteur seul tout au long de l'essai. Le client a \u00e9galement conclu que le programme combin\u00e9 permettait de maintenir l'efficacit\u00e9 de l'inhibition avec une concentration r\u00e9siduelle d'inhibiteur plus faible.<\/p><p>Ces observations sont utiles lorsqu'elles sont consid\u00e9r\u00e9es conjointement. La r\u00e9ponse initiale porte sur l'ajout du GCD2673, tandis que les \u00e9tapes ult\u00e9rieures montrent le comportement du programme combin\u00e9 \u00e0 mesure que le r\u00e9glage du retardateur \u00e9tait modifi\u00e9. Ce r\u00e9sultat est plus probant en tant que s\u00e9quence d'observations op\u00e9rationnelles qu'en tant qu'affirmation isol\u00e9e concernant la r\u00e9duction de la consommation de produits chimiques. Les d\u00e9tails relatifs aux concentrations, aux param\u00e8tres de traitement et aux graphiques d'\u00e9volution figurent dans le rapport complet pour examen technique.<\/p><\/div><\/section><section class=\"ccr-section\" id=\"case-section-5\"><h2>Qualit\u00e9 du produit et manipulation du goudron<\/h2><div><p>Le client a suivi la puret\u00e9 du styr\u00e8ne et la teneur en polym\u00e8re dans les r\u00e9servoirs de produit tout au long de l'\u00e9valuation et a signal\u00e9 que la qualit\u00e9 du produit s'\u00e9tait maintenue aux niveaux observ\u00e9s avant l'essai. Les relev\u00e9s de temp\u00e9rature et de pression de la colonne sont \u00e9galement rest\u00e9s stables durant la comparaison des traitements. Ces v\u00e9rifications ont permis \u00e0 l'usine d'\u00e9valuer si le programme chimique r\u00e9vis\u00e9 r\u00e9pondait \u00e0 ses exigences op\u00e9rationnelles globales.<\/p><p>Le rapport fait \u00e9galement \u00e9tat d'une production de goudron l\u00e9g\u00e8rement inf\u00e9rieure, d'une teneur en styr\u00e8ne acceptable dans le goudron et de l'absence d'obstruction du circuit de transfert du goudron durant l'essai. Ces observations viennent \u00e9tayer les r\u00e9sultats de cette application. Elles offrent \u00e0 un autre producteur des pistes de r\u00e9flexion utiles \u00e0 int\u00e9grer dans une \u00e9valuation, en particulier lorsque le comportement des r\u00e9sidus de fond et la manipulation du goudron rev\u00eatent une importance comparable \u00e0 celle des principaux indicateurs de contr\u00f4le du polym\u00e8re.<\/p><\/div><\/section><section class=\"ccr-section\" id=\"case-section-6\"><h2>Comment l'usine a \u00e9valu\u00e9 le co\u00fbt des produits chimiques<\/h2><div><p>L'usine a fait \u00e9tat d'une \u00e9conomie nette sur les co\u00fbts des produits chimiques apr\u00e8s prise en compte de l'ajout de GCD2673. Son estimation s'est appuy\u00e9e sur les donn\u00e9es historiques de consommation et de co\u00fbt du retardateur ainsi que sur les param\u00e8tres de traitement appliqu\u00e9s lors de l'essai. Le mois d'essai ayant comport\u00e9 une phase initiale et une r\u00e9duction progressive des dosages, la consommation mensuelle mesur\u00e9e et la consigne op\u00e9rationnelle finale offrent des perspectives diff\u00e9rentes sur le programme.<\/p><p>Le rapport d\u00e9taill\u00e9 explique cette base \u00e9conomique. Pour une autre installation, il faudrait conna\u00eetre les prix d'achat actuels, le taux de production, la consommation de produits chimiques et la p\u00e9riode de comparaison retenue afin de calculer une \u00e9conomie pertinente. Cette estimation historique constitue un exemple utile de la m\u00e9thode d'\u00e9valuation du client, plut\u00f4t qu'un devis actualis\u00e9 ou un rendement garanti pour une autre ligne de distillation.<\/p><\/div><\/section><section class=\"ccr-request\" id=\"case-report\"><h2>Examinez la s\u00e9quence et les tendances sous-jacentes.<\/h2><p>Demandez l'\u00e9tude de cas compl\u00e8te pour examiner la r\u00e9duction progressive de l'agent retardateur, les tendances quotidiennes concernant les r\u00e9sidus et les gommes, les contr\u00f4les de qualit\u00e9 du produit ainsi que l'estimation des co\u00fbts des produits chimiques pour le client. Ces informations permettent \u00e0 une \u00e9quipe technique d'\u00e9valuer comment une d\u00e9marche similaire pourrait s'int\u00e9grer \u00e0 son propre programme d'inhibition. Veuillez inclure dans votre demande la configuration de votre proc\u00e9d\u00e9, le dispositif actuel d'inhibition ou de retardement, ainsi que vos objectifs op\u00e9rationnels. Cestoil examine les informations relatives \u00e0 l'entreprise et \u00e0 l'application envisag\u00e9e avant de communiquer le fichier PDF.<\/p><a class=\"ccr-button\" href=\"https:\/\/www.cestoil.com\/fr\/demander-une-etude-de-cas\/?case=2496\">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, unit\u00e9 de distillation de styr\u00e8ne, complexe p\u00e9trochimique asiatique, juin-juillet 2019.<\/p><nav class=\"ccr-links\" aria-label=\"Pages connexes\"><a href=\"\/fr\/applications-des-produits\/solutions-pour-les-procedes-petrochimiques\/\">D\u00e9couvrez des solutions pour les proc\u00e9d\u00e9s p\u00e9trochimiques<\/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>Un producteur asiatique de styr\u00e8ne a combin\u00e9 Northshore GCD2673 avec son retardateur existant afin d'\u00e9valuer l'inhibition synergique lors de la distillation.<\/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-2496","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=\"An Asian styrene producer combined Northshore GCD2673 with its existing retarder to evaluate synergistic inhibition in distillation. 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