Versatile Frying & Shortening Oil
Cottonseed oil is a versatile vegetable oil valued for its high smoke point, neutral flavor, and ideal beta-prime crystal structure for shortenings and margarines. Global annual production exceeds 5 million metric tons, primarily as a by-product of cotton fiber production.
Huatai's cottonseed oil production lines deliver complete EPC solutions covering every stage — from delinting (removing residual linters) and dehulling, through pre-pressing and solvent extraction, to refining with specific gossypol removal. Cottonseed contains gossypol, a toxic pigment that must be removed during processing.
We offer flexible capacities from 30 TPD to 800 TPD. Each line is custom-engineered based on your cottonseed variety (upland or Pima), lint content, and target oil grade. Mixed refining of cottonseed oil with other oils requires special consideration for gossypol removal.
Cottonseed Oil Production Steps
From raw cottonseed oil to refined oil — a fully integrated process.
1. Cleaning
Raw cottonseed passes through magnetic separators and vibrating screens to remove foreign materials — stems, leaves, stones, and metal fragments.
2. Delinting
Residual linters (short fibers) are removed from cottonseed using acid delinting (sulfuric acid) or mechanical delinting (saw gin), exposing the seed hull for dehulling.
3. Dehulling
De-linted cottonseed is dehulled using bar hullers and separated by aspirators and shaker tables. Hull removal (35-40% of seed weight) improves oil content and reduces fiber in meal.
4. Flaking
Dehulled cottonseed meats are flaked to 0.30-0.40 mm thickness using smooth-roll flaking mills to rupture oil cells.
5. Conditioning & Cooking
Flakes are conditioned with steam to 90-110°C. Critical high-temperature cooking (110-120°C) denatures gossypol, binding it to protein and preventing it from entering the oil during extraction.
6. Pre-pressing
Conditioned flakes are pre-pressed in a continuous screw press to remove 55-65% of the oil, producing press cake for solvent extraction.
7. Solvent Extraction
Pre-pressed cake is extracted with hexane in a continuous chain or loop extractor using counter-current percolation, reducing residual oil in meal below 1.0%.
8. Refining
Crude cottonseed oil is refined through alkali refining (neutralization removes free fatty acids and gossypol), bleaching (removes gossypol pigments), and deodorization to produce fully refined cottonseed oil.
9. Winterization (Optional)
Refined cottonseed oil can be winterized to remove high-melting fractions, producing clear salad oil. Non-winterized oil is used for frying and shortening applications.
Key Equipment Systems
Each system is designed and manufactured in-house under ISO 9001 quality management.
Delinting & Dehulling
Acid delinting system or mechanical saw delinter, followed by bar huller, aspirator, and shaker table for hull-kernel separation. Achieves 90%+ dehulling efficiency.
Pre-pressing & Extraction
Continuous screw pre-press followed by chain-type or loop-type extractor with counter-current hexane percolation, DTDC, and miscella evaporation system.
D.T.D.C. System
Multi-stage desolventizer-toaster-dryer-cooler with controlled high-temperature toasting to denature gossypol, producing safe cottonseed meal for ruminant feed.
Refining System
Alkali refining with disc centrifuge for gossypol removal, followed by vacuum bleaching with activated earth and continuous deodorization. Critical for food-grade cottonseed oil.
Winterization (Optional)
Crystallization and filtration for clear salad oil production. Non-winterized cottonseed oil is used for frying oils, shortenings, and margarines.
Technical Highlights
Engineering innovations that deliver superior performance and lower operating costs.
Gossypol Management System
Our integrated process combines high-temperature cooking, alkali refining, and bleaching to reduce gossypol to below 50 ppm in refined oil, meeting food safety standards globally.
Efficient Delinting Technology
Mechanical saw delinting removes 8-12% of linters without acid, producing food-grade linters for cellulose processing while reducing environmental impact versus acid delinting.
Ruminant-Safe Meal Production
Controlled DTDC toasting denatures gossypol to bound form, producing cottonseed meal with 40-45% protein safe for ruminant feed, maximizing by-product value.
China's Leading Grain & Oil Machinery Manufacturer
Henan Huatai Intelligent Equipment Group was founded in 1988 and has grown into one of China's major grain and oil machinery manufacturing enterprises. We integrate research and development, engineering design, equipment manufacturing, on-site installation and commissioning under one roof.
Our 100,000㎡ manufacturing campus in Hua County, Henan Province houses modern production lines with CNC machining centers, automated welding systems and comprehensive quality testing laboratories. As an ISO 9001 certified manufacturer, every piece of equipment undergoes rigorous inspection and factory acceptance testing before shipment.
We specialize in complete EPC turn-key projects covering the full spectrum of edible oil processing — from oilseed pretreatment and solvent extraction through to refining, fractionation and by-product utilization.
38+
Years of Experience
100,000 m²
Modern Factory
70+
Countries Served
22
Global Offices
Get Your Customized Cottonseed Oil Plant Solution
Tell us your cottonseed variety and target capacity. Our engineers will prepare a tailored proposal within 48 hours.