{"id":2565,"date":"2021-08-16T17:40:02","date_gmt":"2021-08-16T09:40:02","guid":{"rendered":"https:\/\/www.htoilmachine.com\/blog\/?p=2565"},"modified":"2021-08-16T17:40:02","modified_gmt":"2021-08-16T09:40:02","slug":"edible-oil-refining-bleaching","status":"publish","type":"post","link":"https:\/\/www.htoilmachine.com\/blog\/oil-pressing\/edible-oil-refining-bleaching\/","title":{"rendered":"Edible oil Refining – Bleaching"},"content":{"rendered":"
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Bleaching Technology<\/h2>\n<\/div>\n<\/div>\n
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In addition to color pigments, Bleaching also removes residual phosphatides, metal contaminants, soaps and oxidation products.<\/p>\n

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Oil<\/strong>\u00a0undergoes Pre-treatment with Phosphoric acid\/citric acid and the pre-treated oil is given a pre-determined retention before going to the\u00a0Bleacher<\/strong>. This step splits soap and traps metal contaminants.<\/p>\n

The pre-treated oil is mixed with bleaching earth in inline static mixer.<\/p>\n

Bleacher<\/strong>\u00a0is equipped with mechanical agitation and steam sparging for better contact between oil and bleaching earth. Bleacher is kept under vacuum of 710 mm Hg. A retention time of 40 \u2013 60 minutes is given to slurry for efficient contact and adsorption of color pigments and other impurities on to the Bleaching earth.<\/p>\n

The slurry is then sent to Pressure Leaf Filters for filtration of bleaching earth from oil, followed by polish filtration. The spent cake is then dried by steam blowing to remove oil from it.<\/p>\n<\/div>\n<\/div>\n

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\"Edible<\/div>\n<\/figure>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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\"Edible<\/div>\n<\/figure>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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Salient Features<\/h2>\n<\/div>\n<\/div>\n
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<\/i>\u00a0Pretreatment of\u00a0Oil\u00a0to eliminate metal contaminants and residual P-contents<\/p>\n

<\/i>\u00a0Slurry preparation & Bleaching in single reactor \u2013 Compact system<\/p>\n

<\/i>\u00a0No carryover of bleaching chemical to Vacuum system<\/p>\n

<\/i>\u00a0Wet Bleaching with effective mechanical agitation<\/p>\n

<\/i>\u00a0Enhanced adsorption of coloring matters by bleaching earth<\/p>\n

<\/i>\u00a0Lower consumption of Bleaching earth<\/p>\n

<\/i>\u00a0Ensure accurate (Automated) dosing system of Bleaching earth<\/p>\n

<\/i>\u00a0Lower consumption of utilities<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Bleaching Technology In addition to color pigments, Bleaching also removes residual phosphatides, metal contaminants, soaps and oxidation products. Oil\u00a0undergoes Pre-treatment with Phosphoric acid\/citric acid and the pre-treated oil is given a pre-determined retention before going to the\u00a0Bleacher. This step splits soap and traps metal contaminants. The pre-treated oil is mixed with bleaching earth in inline […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[2],"tags":[134],"yoast_head":"\nEdible oil Refining - Bleaching - Edible Oil Expeller Machinery<\/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:\/\/www.htoilmachine.com\/blog\/oil-pressing\/edible-oil-refining-bleaching\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Edible oil Refining - Bleaching - Edible Oil Expeller Machinery\" \/>\n<meta property=\"og:description\" content=\"Bleaching Technology In addition to color pigments, Bleaching also removes residual phosphatides, metal contaminants, soaps and oxidation products. 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