{"id":1706,"date":"2026-09-05T17:20:19","date_gmt":"2026-09-05T22:20:19","guid":{"rendered":"https:\/\/cestoil.com\/?page_id=1706"},"modified":"2026-09-06T08:49:15","modified_gmt":"2026-09-06T13:49:15","slug":"diesel-lubricity-refinery-blending","status":"publish","type":"page","link":"https:\/\/www.cestoil.com\/zh\/case-studies\/diesel-lubricity-refinery-blending\/","title":{"rendered":"Improving Diesel Lubricity in Refinery Blending"},"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.cpr-page{font-family:Lato,Helvetica,Arial,sans-serif;color:#4a4a4a;font-size:17px;line-height:1.75;max-width:1180px;margin:0 auto;padding:34px 0 64px;box-sizing:border-box}\n.cpr-page 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.cs-observations{padding:22px}.cs-filter+label{margin-right:6px;font-size:15px;padding:10px 12px}.cs-page .cpr-hero img{height:220px}}\n<\/style><article class=\"cpr-page cs-page\" id=\"case-1706\"><nav class=\"cpr-breadcrumb\" aria-label=\"Breadcrumb\"><a href=\"\/case-studies\/\">Case Studies<\/a><span aria-hidden=\"true\">\/<\/span><span>Mobility<\/span><\/nav><header class=\"cpr-hero\"><div><p class=\"cpr-kicker\">Mobility \u00b7 Case study<\/p><h1>Improving Diesel Lubricity in Refinery Blending<\/h1><p class=\"cpr-lead\">A refinery evaluated lubricity treatment after untreated diesel samples showed larger wear scars than its project target allowed. The case compares treated and untreated samples using the high-frequency reciprocating rig method, commonly known as HFRR.<\/p><a class=\"cpr-button\" href=\"\/contact\/\">Discuss a similar application<\/a><\/div><figure><img src=\"https:\/\/www.cestoil.com\/wp-content\/uploads\/demulsifiers.jpg\" alt=\"\" decoding=\"async\"><figcaption class=\"cs-note\">Application image; not a photograph of the customer site.<\/figcaption><\/figure><\/header><aside class=\"cs-observations\" aria-label=\"Reported observations\"><h2>Reported observations<\/h2><ul><li>Smaller reported HFRR wear scars after treatment<\/li><li>Comparisons across multiple treated samples<\/li><li>Selection tied to project acceptance criteria<\/li><\/ul><\/aside><section class=\"cpr-section\"><h2>Operating context<\/h2><div class=\"cpr-body\"><p>The refinery needed to address diesel lubricity during changes in production and blending requirements. Sample testing identified a treatment need, and the site evaluated an additive program using its fuel streams and existing injection arrangements.<\/p><\/div><\/section><section class=\"cpr-section\"><h2>Challenge<\/h2><div class=\"cpr-body\"><p>The immediate objective was to improve the measured lubricity response of the refinery\u2019s diesel. The comparison needed to connect treatment addition with a defined laboratory result that could be assessed against the project\u2019s acceptance criteria.<\/p><\/div><\/section><section class=\"cpr-section\"><h2>Evaluation and treatment<\/h2><div class=\"cpr-body\"><p>The refinery introduced lubricity treatment through its additive-injection systems and compared samples at different treatment levels. HFRR wear-scar diameter was the principal reported measure. The results were reviewed against the project\u2019s lubricity objective as part of selecting the blending treatment.<\/p><\/div><\/section><section class=\"cpr-section\"><h2>Observed results<\/h2><div class=\"cpr-body\"><p>The case summary reports smaller wear scars in each of the displayed treated-sample comparisons. This supports the reported lubricity response for those samples and test conditions. The measurements describe fuel-sample performance; engine durability would require a separate evaluation.<\/p><\/div><\/section><section class=\"cpr-section\"><h2>Application considerations<\/h2><div class=\"cpr-body\"><p>A new evaluation should use representative blend samples and the customer\u2019s applicable acceptance criteria. Base-fuel composition and the existing additive package should be recorded with sample preparation and test conditions. Lubricity results should form part of the refinery\u2019s wider finished-fuel assessment before an operating treatment is selected.<\/p><\/div><\/section><aside class=\"cpr-related\"><h2>Related product category<\/h2><p><a href=\"https:\/\/www.cestoil.com\/solutions\/fuel-additives\/lubricity-improvers\/\">Lubricity improvers<\/a><\/p><\/aside><section class=\"cpr-cta\"><h2>Discuss a similar application<\/h2><p>Useful starting points for a technical review:<\/p><ul><li>Representative diesel blends and acceptance criteria<\/li><li>Existing additive package and injection arrangements<\/li><li>HFRR conditions and sample-comparison records<\/li><\/ul><a class=\"cpr-button\" href=\"\/contact\/\">Contact our technical team<\/a><\/section><footer class=\"cs-source\"><p>This overview is based on a Cestoil case summary. Observations relate to the reported application and operating conditions; treatment selection requires a review of the intended application.<\/p><a href=\"\/case-studies\/\">Explore all case studies<\/a><\/footer><\/article>\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div><\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>A refinery evaluated lubricity treatment after untreated diesel samples showed larger wear scars than its project target allowed. 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