Edible Oil Decolorizing Equipment
Pure triglycerides are naturally colorless, but crude oils often exhibit dark hues due to various pigments. In a commercial oil refinery, edible oil decolorizing equipment (also known as the oil bleaching system) is indispensable. It does not just lighten the oil color to meet premium standards—it actively prevents color reversion, removes trace impurities, and substantially extends the oil’s shelf life.
As an industry-leading grain and oil machinery manufacturer, Huatai engineers high-efficiency vacuum decolorization towers and continuous bleaching plants designed to reduce absorbent consumption while preserving maximum oil nutrition.
Why Is the Edible Oil Bleaching Process Essential?
Crude oil contains a complex mix of pigments and degradants that compromise final product quality and human health if left unrefined:
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Organic Pigments: Chlorophyll, carotenoids, and gossypol (highly toxic in cottonseed oil) darkens appearance and accelerates photo-oxidation.
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Organic Degradants: Trace proteins, carbohydrates, and residual phospholipids that cause foaming.
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Catalyst Poisons: Trace metal ions and gums that can poison downstream hydrogenation and deodorization catalysts.
Huatai’s oil bleaching machine utilizes advanced vacuum adsorption technology to trap these harmful compounds completely, giving your edible oil a crystal-clear, premium market appeal.
Adsorption Bleaching: The Industrial Gold Standard
While alternative methods like thermal, air, or reagent bleaching exist, they often trigger thermal oxidation or leave harmful chemical residues. Adsorption decolorization remains the safest and most efficient method adopted worldwide.
The Working Principle
Our system blends crude oil under high vacuum with selective adsorbents, such as bleaching earth, activated clay, or activated carbon:
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Vacuum Mixing: Oil and bleaching clay are precisely dosed and intimately mixed under vacuum, preventing any contact with air to eliminate thermal oxidation risks.
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Selective Adsorption: The porous micro-structures of the clay capture and bind organic pigments, trace gums, and metal ions.
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Filtration: The mixture passes through premium leaf filters where the spent clay is completely separated, discharging highly polished, sparkling clear oil.
Technical Data & Process Comparison
To help you choose the best processing layout for your refinery line, here is the technical breakdown of our continuous versus intermittent edible oil decolorizing equipment:
| Technical Parameters | Intermittent Type (Batch) | Continuous Type (Tube/Tower) |
| Mixing Agitation Method | Mechanical Stirring | Steam Agitation |
| Clay Consumption (%) | 3% – 5% | 1% – 3% (Save up to 40%) |
| Decolorization Temperature | 90℃ – 110℃ | 105℃ – 120℃ |
| Processing Time (min) | 30 – 50 min | 20 – 30 min |
| Vacuum Degree (MPa) | -0.095 MPa | -0.095 MPa |
| Bleached Color (Lovibond) | Y35 R6 | Y35 R4 |
| Steam & Power Consumption | High | Low (Energy Saving) |
Core Equipment: Huatai Vacuum Decolorization Tower Specs
Our vertical decolorization towers feature a unique internal design that ensures uniform clay dispersion and zero settlement.
Engineering Advantages:
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Full GMP Compliance: The entire structure is crafted from heavy-duty SUS304 or acid-and-alkali-resistant SUS316L stainless steel, perfectly suited for global food safety certifications.
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Uniform Multi-Stage Agitation: Prevents clay settling and ensures exhaustive contact between the adsorbent and oil droplets.
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Corrosion-Proof & Fast Heating: Integrated high-efficiency steam heating coils ensure fast temperature adjustment with minimal energy loss.
Model Configurations:
| Model | Specifcatior(mm) | Volume(m³) |
|---|---|---|
| HTTST100 | Ф1000*3000 mm | 2.7 m³ |
| HTTST120 | Ф1200*3000 mm | 4 m³ |
| HTTST140 | Ф1400*3500 mm | 6.2 m³ |
| HTTST160 | Ф1600*3500 mm | 8.2 m³ |
| HTTST180 | Ф1800*4000 mm | 10.8 m³ |
| HTTST260 | Ф2600*5000 mm | 31.5 m³ |
Why Choose Huatai’s Oil Refining Systems?
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38 Years of Global Leadership: Huatai Intelligent Equipment Group is a premium engineering partner for industrial food enterprises worldwide.
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Reduced Operating Costs: Our advanced steam-stirred continuous towers cut clay consumption by up to 40% compared to traditional batch systems.
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Turnkey EPC Project Delivery: From initial 3D factory floor design and tailored budget analysis to custom equipment manufacturing, on-site installation, and global technical support.
Optimize Your Oil Clarity. Request a Free Budget Analysis Today!
Are you designing a new refinery line or looking to reduce bleaching clay costs in your existing facility? Contact Huatai’s engineering experts today for your customized system design and a competitive quote.
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Email: info05@cnoilmachine.com
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Phone / WhatsApp: +86 18337263319
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Address: Xiangjiang Road, Industry Zone, Hua County, Henan Province, China