How to Build a 50 Tons/Day Rapeseed Oil Processing Plant? QIE Group Full-Step Guide

With the growing popularity of healthy diets, rapeseed oil has become the third largest vegetable oil globally due to its rich unsaturated fatty acids (oleic acid 14-19%, linoleic acid 12-24%) and vitamin E.Building a modern 50 tons/day rapeseed oil processing plant can meet regional market demand while delivering considerable economic benefits.(Read More:What equipment is needed to invest in a small rapeseed oil mill plant?)

Step-by-Step Guide to Building the Plant

Site Selection and Layout Planning

Key Considerations:

• Close to rapeseed production areas to reduce raw material transport costs

• Convenient transportation (rail/road) for logistics

• Adequate utilities (water and electricity) for production needs

Layout Suggestions:

• Reserve 10-15 acres for pretreatment, pressing, refining, and packaging areas

• QIE Group provides 3D layout simulations to optimize workflow and minimize material handling loss

Raw Material Preparation and Pre-treatment

The quality of rapeseed oil begins with the raw material. Fresh, dry, and mold-free rapeseeds are essential for high-quality oil.

Pre-treatment Process:

• Cleaning: Remove stones, metal, and impurities using vibrating screens and magnetic separators

• Crushing & Flaking: Flatten seeds to break cell structure and improve oil extraction

• Conditioning: Adjust moisture and temperature to denature protein and enhance pressing yield

QIE Group offers 100-3000 T/D pretreatment plant solutions with automated control systems to ensure stable process parameters and high oil extraction efficiency.

Pressing and Solvent Extraction

For a 50 tons/day capacity, the pre-pressing + solvent extraction combination is recommended to balance flavor retention and maximize oil yield (residual oil <1%).

Key Steps:

1. Pre-pressing: Use screw presses to extract crude oil and produce pre-pressed cake

2. Solvent Extraction: Treat the pre-pressed cake with n-hexane to extract remaining oil

3. Mixed Oil Treatment & Solvent Recovery: Separate oil and solvent via evaporation and stripping; solvent is recycled

Our 200 TPD pre-pressed cake solvent extraction plant uses a fully enclosed vacuum system for safe operation, low solvent loss, and compliance with international environmental standards. It significantly improves overall oil yield for medium-to-large rapeseed oil plants.

Refining and Quality Upgrade

Crude oil contains gums, free fatty acids, pigments, and odor compounds, which must be refined to produce edible oil.

Four-Stage Refining Process:

1. Degumming: Remove phospholipids and other gum impurities

2. Neutralization: Remove free fatty acids through alkali refining

3. Decolorization: Adsorb pigments using activated clay

4. Deodorization: Remove odors via high-temperature vacuum distillation

Our 50 TPD continuous refining plant is fully automated with thermal oil heating and high-efficiency vacuum systems. Finished oil meets GB 1536-2021 national standards (Grade 1 or 2). For high-end markets, dewaxing can be added to improve low-temperature stability.

Packaging and Finished Product Storage

• Filling Line: Package refined rapeseed oil into 5L, 10L, 20L drums or bottles. We provides 8-head fully automatic filling machines with high precision and efficiency up to 1,200 bottles/hour

• Storage Management:: Keep in a cool, dark warehouse using stainless steel tanks with nitrogen protection to prevent oxidation

Practical Tips for the Industry

Energy Saving & Cost Control

• Use QIE Group’s heat recovery system to reduce steam consumption

• Pre-pressing + solvent extraction process increases overall oil yield to 98%

Factory Layout Optimization

• Arrange equipment in a linear process flow to minimize cross-transport

• Reserve space for maintenance to improve repair efficiency

Why Partner with QIE Group?

• Proven Expertise: With over four decades in oil machinery research, development, and manufacturing, QIE Group delivers reliable and efficient solutions.

• Reliable Production Capacity: Tailored complete 50 tons/day rapeseed oil processing lines designed for maximum yield and consistent performance.

• Global Reach: Successful projects in over 130 countries, covering soybean, sunflower, palm, and rapeseed oil production.

• Comprehensive Solutions: From process design and equipment fabrication to installation, commissioning, and operator training, we provide end-to-end support for every project.

Contact QIE Group now to get your exclusive 50 tons/day rapeseed oil processing plant plan and free project evaluation, and make your oil processing project profitable from day one!