What Is an Oilseed Pretreatment Line?

The oilseed pretreatment line is the essential first step in any edible oil production process. Designed to prepare raw materials for pressing or solvent extraction, it ensures maximum oil yield, energy efficiency, and protection of downstream equipment. Vos offers customized pretreatment systems for various oil-bearing seeds, with full engineering support for capacities ranging from 10 to 300 tons per day.

It is a complete processing system that removes impurities, adjusts physical properties, and optimizes raw materials for efficient oil extraction. It includes seed cleaning, destoning, crushing, flaking, cooking, and optional extrusion—each step enhancing oil release and production performance.

This line is widely used in small- and large-scale oil production plants for materials like soybeans, peanuts, sunflower seeds, rapeseeds, and cottonseeds.

Get a Free Quote and Details !

Why Oilseed Pretreatment Matters

1、Improved Oil Yield
Pretreatment breaks cell structures and improves oil release during pressing or extraction.

2、Equipment Protection
Cleaning and destoning remove sand, stones, and other hard impurities that could damage downstream machines.

3、Better Oil Quality
Proper moisture and temperature adjustment reduce free fatty acids and undesirable compounds in crude oil.

4、Essential for Extraction Lines
Thin flakes and uniform moisture improve solvent absorption and extraction efficiency.

Get a Free Quote and Details !

Main Equipment in a Vos Pretreatment Line

Vos provides a full set of reliable, industrial-grade machines for each stage of oilseed preparation:

1. Vibrating Cleaning Screen

Removes dust, straw, hulls, and light impurities to protect subsequent machines.

2. Paddy Destoner Machine

Separates heavy stones and metallic particles from seeds using density difference.

3. Double Tooth Roller Crusher

Crushes large seeds into smaller pieces to improve flaking and reduce energy consumption.

4. Hydraulic Flaking Machine

Rolls seeds into thin, uniform flakes to rupture cell walls and prepare for cooking.

5. Vertical Cooker

Steam-based conditioning system that adjusts temperature and moisture for optimal oil release.

6. Oilseed Extruder (Optional)

Applies pressure and heat to improve oil extraction, particularly for soybeans and cottonseeds.

Get a Free Quote and Details !

Pretreatment Process Flow

Raw Seeds → Cleaning → Destoning → Crushing → Flaking → Cooking → Extruding (optional) → Pressing or Solvent Extraction

This flow may be tailored based on raw material type and plant design.

Suitable Raw Materials & Recommended Capacity

Raw Material	Typical Oil Content (%)	Recommended Capacity (TPD)	Notes
Soybeans	16–20%	30–300	Suitable for solvent extraction or pressing
Sunflower Seeds	38–45%	20–150	Requires flaking and careful cooking
Peanuts (Groundnuts)	42–50%	20–200	Needs thorough cleaning and shell removal
Rapeseeds	35–45%	30–200	Can be used for both pressing and extraction
Cottonseeds	16–22%	50–300	Often paired with extrusion to improve oil release
Sesame Seeds	40–50%	10–100	Often used in cold pressing lines but also pretreated
Rice Bran	12–20%	30–150	Requires fast processing due to high FFA

Get a Free Quote and Details !

Integration with Complete Oil Production Systems

The oilseed pretreatment line can be seamlessly connected to:

Screw oil press machines for mechanical extraction

Solvent extraction lines for high-efficiency oil recovery

Edible oil refining lines for high-quality final products

Vos supports complete system planning, installation, and commissioning for full-scale oil factories.