Oil that turns cloudy on a cold shelf loses customers. The winterizing tank cools oil slowly under gentle stirring to a target temperature, so fats, gums and waxes crystallize into filterable solids — then paper-fine filtration leaves oil that stays bright and clear even in winter. 400 kg per batch on just 2 kW.
Every pressed oil carries traces of high-melting fats and waxes that stay dissolved at room temperature but crystallize into haze when the weather cools. Buyers read that haze as a quality defect — even though the oil is fine. Winterization removes the cause instead of apologizing for it.
The tank stirs oil slowly while a cooling unit walks the temperature down on a controlled curve. Crystals grow large and firm — the precise opposite of quick chilling — and a fine paper filter then takes them out. Compared with traditional pneumatic filtration alone, the filter-paper finish achieves higher precision, the oil does not re-warm during filtering, and peroxide value stays low with no color darkening.
| Item | Specification |
|---|---|
| Batch capacity | 400 kg |
| Power | 2 kW |
| Tank size | 101×101×240 cm |
| Level gauge | 60 cm sight tube |
| Process | slow stir + controlled cooling + paper filtration |
Slow, even temperature descent grows large filterable crystals — the heart of effective winterization.
Continuous low-speed agitation keeps crystals suspended and uniform without breaking them into unfilterable fines.
Designed to feed filter-paper polishing after crystallization — higher precision than air-pressure filtering alone.
Filtration proceeds without heating the oil back up, so the removed waxes cannot re-dissolve and the work is not undone.
Process keeps peroxide value low and color stable — clearer oil that also ages better in storage.
In practice the terms overlap: dewaxing targets waxes specifically (sunflower, rice bran), while winterization removes all high-melting fractions — waxes, saturated fats and residual gums — by controlled chilling and filtration. This tank performs both.
Sunflower and rice bran oil almost always; peanut, corn and cottonseed oil benefit when sold in cold climates or refrigerated displays. If your oil clouds in winter, winterizing is the fix.
Cooling 400 kg on a controlled curve plus filtering typically spans several hours to overnight depending on starting temperature and target. Most mills run it as an overnight cycle feeding morning filtration.
No — it only removes the high-melting fraction that would crystallize anyway. Flavor, color and nutritional profile of the liquid oil remain; appearance and cold-weather stability improve.
After pressing, filtering and (ideally) degumming, before bottling. Pair it with a hydration centrifuge upstream and fine paper filtration downstream for a retail-grade finish.
Tell us your raw material, daily capacity and budget — our engineers will recommend the right configuration and send a factory-direct quote within 24 hours.
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