World’s Third-Largest Vegetable Oil
Rapeseed oil (including canola) is the world's third-largest vegetable oil by production, valued for its low saturated fat content, high oleic acid, and favorable omega-3 profile. Global annual production exceeds 28 million metric tons, with major producers in the EU, Canada, China, and India.
Huatai's rapeseed oil production lines deliver complete EPC solutions covering every stage — from seed cleaning and conditioning, through flaking, pre-pressing, and solvent extraction, to fully refined rapeseed oil. Rapeseed contains 40-45% oil, requiring pre-pressing before extraction for optimal efficiency.
We offer flexible capacities from 30 TPD to 1,500 TPD. Each line is custom-engineered based on your rapeseed variety (canola or high-erucic), target oil grade, and meal quality requirements. Our engineering team provides complete support from feasibility study to plant commissioning.
Rapeseed Oil Production Steps
From raw rapeseed oil to refined oil — a fully integrated process.
1. Cleaning
Raw rapeseed passes through magnetic separators, vibrating screens, and destoners to remove foreign materials — stems, dust, stones, and metal fragments.
2. Conditioning
Rapeseed is conditioned with steam to 60-70°C and adjusted to 7-9% moisture in a vertical conditioner or heating cooker, improving plasticity for flaking.
3. Flaking
Conditioned rapeseed is flaked to 0.25-0.30 mm thickness using smooth-roll flaking mills. Thin flakes are critical for rapeseed due to small seed size.
4. Cooking
Flakes are cooked in a multi-stage vertical cooker to 105-115°C, adjusting moisture to 4-5% for optimal pressing performance and protein protection.
5. Pre-Pressing
Cooked flakes are pre-pressed in a continuous screw press to remove 60-70% of the oil, producing press cake with 12-18% residual oil for solvent extraction.
6. 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%.
7. Miscella Evaporation
Miscella is evaporated in two stages and stripped under negative pressure to recover solvent and produce crude rapeseed oil.
8. Refining
Crude rapeseed oil is refined through degumming (water or acid), neutralization, bleaching, and deodorization to produce fully refined rapeseed oil with FFA below 0.1%.
9. Optional: Winterization
For premium cold-chain applications, rapeseed oil can be winterized to remove waxes and high-melting triglycerides for clarity at low temperatures.
Key Equipment Systems
Each system is designed and manufactured in-house under ISO 9001 quality management.
Pretreatment System
Magnetic separator, vibrating screen, destoner, vertical conditioner, flaking mill, and multi-stage vertical cooker for continuous operation with automatic temperature and moisture control.
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 for rapeseed meal processing, producing high-protein meal (35-40% protein) valued as premium animal feed ingredient.
Refining System
Complete continuous refining line with degumming, neutralization, vacuum bleaching, and deodorization for fully refined rapeseed (canola) oil.
Optional Winterization
Crystallization and filtration for premium cold-stable rapeseed oil, removing waxes and high-melting triglycerides for retail clarity.
Technical Highlights
Engineering innovations that deliver superior performance and lower operating costs.
High-Protein Meal Production
Our DTDC system preserves rapeseed meal protein content at 35-40%, producing premium animal feed ingredient valued by livestock and poultry feed manufacturers.
Energy-Efficient Extraction
Negative pressure miscella evaporation saves up to 30% steam versus conventional single-effect designs, while counter-current extraction achieves residual oil below 1.0% in meal.
Flexible Variety Processing
Our plants handle both canola (low-erucic, food-grade) and traditional rapeseed (high-erucic, industrial) varieties, with adjustable parameters for different glucosinolate and erucic acid levels.
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 Rapeseed Oil Plant Solution
Tell us your rapeseed variety (canola or high-erucic) and target capacity. Our engineers will prepare a tailored proposal within 48 hours.