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Ocean’s engineered Dewaxing and Winterization (Fractionation) solutions are designed to master oil clarity, stability, and functional versatility. Utilizing controlled crystallization and separation technology, we efficiently remove solid impurities—including natural waxes and high-melting-point triglycerides—that compromise product quality. The result is visually brilliant oils with enhanced cold stability, extended shelf life, and tailored physicochemical properties. Ideal for premium edible oils, specialty fats, and high-value industrial applications, our solutions transform raw oils into consistent, market-ready products that meet stringent standards and command higher margins.
Dewaxing
Targets natural waxes (fatty acid esters) in oils like rice bran, sunflower, and corn oil. Prevents unsightly cloudiness and sedimentation at cool temperatures, ensuring brilliant visual appeal and smooth texture.
Winterization / Fractionation
Separates high-melting triglycerides ("hard fats") from the oil matrix. This crucial step guarantees excellent cold-weather performance (preventing solidification) and enables the production of specialized fractions like liquid olein and solid stearin for tailored end-uses.
1.Controlled Cooling Crystallization
Pre-treated oil (typically degummed and neutralized) is fed into crystallization tanks. Under continuous, gentle agitation, it undergoes a programmed cooling process along a precisely controlled temperature curve. The oil is gradually cooled to a target temperature, usually within the range of 10–20°C (and for some oils, as low as 5°C). The slow cooling rate and sufficient residence time are critical, allowing waxes to form stable, uniformly-sized crystals that are ideal for efficient separation.
2.Crystal Maturation / Aging
Upon reaching the target temperature, the oil is held under agitation for a defined period (the “aging” time). This crucial step allows for Ostwald ripening, where smaller crystals dissolve and reprecipitate onto larger ones, further strengthening the crystal lattice and increasing particle size for maximum filtration efficiency.
3.Efficient Separation
Advanced filtration systems (e.g., filter presses, aided by filter media) or centrifuges cleanly separate the firm wax paste from the clear dewaxed oil.
4.Output
Brilliantly clear oil proceeds to final refining, while wax by-products are handled for maximum yield.
1.Conditioning & Melting
Ensures a uniform, crystal-free feed.
2.Programmed Crystallization
The heart of the process. Oil follows a precise multi-stage cooling curve in crystallizers to form solid stearin crystals of the desired morphology.
3.Crystal Stabilization
Allows complete crystal growth and firming at the target temperature.
4.High-Pressure Filtration
Membrane filter presses apply significant pressure to effectively separate the liquid olein from the solid stearin cake, maximizing yield and purity.
5.Dual-Product Output
High-quality liquid Olein and solid Stearin, each with distinct market applications.
Proprietary One-Step dewaxing and winterization Technology
Ocean's patented technology uniquely integrates dewaxing and winterization/
fractionation into a single, efficient process for rice bran oil. This innovation eliminates the need for filter aids, simplifying operations, reducing consumable costs, and enhancing overall yield without compromising separation clarity.
Guaranteed Exceptional Cold Stability
Our production line ensures superior product performance, with refined rice bran oil consistently passing rigorous cold test standards. The final product maintains perfect clarity for over 48 hours at 0°C, guaranteeing reliable quality for end-users and premium market positioning.
Energy-Efficient & Sustainable Operation
Designed with integrated heat recovery systems and optimized process cycles, our line significantly reduces thermal energy consumption and operational costs. This focus on efficiency supports both economic and environmental sustainability goals.
After-Sales Support
Ocean provides comprehensive after-sales support for its oil dewaxing and winterization turnkey solution, including maintenance, troubleshooting, spare parts, and remote technical assistance.
Our dewaxing and winterization production line is engineered for exceptional versatility, capable of processing a wide range of vegetable oils to achieve premium clarity and cold stability. It is optimally compatible with common edible oils such as sunflower, corn, rice bran and rapeseed oils. For clients with specific requirements or novel oil types, Ocean provides dedicated pilot-scale testing using our advanced refining units. In collaboration with professional research teams, we also support the development of specialty oil products and assist in the valorization of processing by-products—such as recovering high-purity wax fractions for industrial applications—ensuring not only superior dewaxed oil quality but also enhanced overall resource efficiency and economic return.
Crystallizer, is a core piece of equipment in modern oil and fat processing. It is specifically designed for the controlled crystallization of fats and oils, a critical step in processes such as fractionation, winterization, and margarine/shortening production. Ocean specializes in the engineering and manufacturing of high-performance tanks that ensure optimal crystal formation, stability, and final product quality.
The Plate and Frame Filter Press is a cornerstone of solid-liquid separation in the modern oil and fat industry. Renowned for its reliability, high filtration efficiency, and exceptional cake dryness, it is the preferred equipment for processes such as bleached earth removal, dewaxing, and catalyst recovery. Ocean specializes in manufacturing heavy-duty filter presses engineered to meet the rigorous demands of the fractionation process.
The dewaxing and winterization production line incorporates a high-precision chiller system to deliver accurate and stable cooling during the critical crystallization phase. This controlled low-temperature environment ensures the formation of uniform, filterable wax and triglyceride crystals, enabling efficient solid-liquid separation and guaranteeing consistent oil clarity and cold stability.
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Newshine 450 TPD Refining & Dewaxing Line
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Xinshi 400 TPD Refining & Dewaxing Line
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Pingpinghao 400 TPD Refining/Dewaxing & 600 TPD Fractionation Line
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Ethiopia Phibela 600 TPD Dewaxing & 800 TPD Fractionation Line
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Lianglong 400 TPD Refining, Dewaxing & Fractionation Line
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Golden Sun 400 TPD Refining & Dewaxing Line
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Liangyou 400 TPD Corn Germ Oil Refining & Dewaxing Line
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Wilmar Taizhou 250 TPD Rice Bran Oil (500 TPD Soybean Oil) Refining Line
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Wilmar Wuhan 250 TPD Rice Bran Oil (500 TPD Soybean Oil) Refining Line
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Jiangsu Yangtze 400 TPD Refining/Dewaxing & 600 TPD Fractionation Line
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COFCO Donghai 100 TPD Refining & Dewaxing Line
Q.What is the main function of a dewaxing and winterization production line?
A: The Ocean Dewaxing and Winterization Production Line is designed to physically remove high-melting-point components—primarily natural waxes and certain triglycerides—from vegetable oils. This process is essential for achieving excellent oil clarity, long-term stability, and reliable performance in cold conditions, meeting premium standards for both food and industrial applications.
Q.Can you guarantee the cold stability performance of the final oil?
A: Yes. Oils processed through our line, particularly rice bran oil, consistently exceed industry cold test standards. We guarantee the refined oil maintains perfect clarity for over 48 hours at 0°C, ensuring it meets the most stringent market requirements for premium quality.
Q. Does Ocean's line require filter aids, and is it suitable for rice bran oil?
A: Our system features proprietary technology optimized for challenging oils like rice bran oil. A key advantage is the efficient one-step dewaxing and winterization process, which achieves high clarity without the need for filter aids, reducing consumable costs and operational complexity.
Q. Does Ocean provide after-sales support and technical services?
A: Absolutely. Our comprehensive after-sales package includes preventive maintenance plans, 24/7 remote troubleshooting, guaranteed supply of genuine spare parts, and on-site technical support. We also offer performance audits and optimization services to ensure your line operates at peak efficiency throughout its lifecycle.
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