Continuous Pre-Drying System for Oil By-Products Before Solvent Extraction
With decades of industrial application, it is recognized for its stable operation, high safety margin, and strong adaptability, making it a preferred choice for medium to large-scale continuous oil processing plants.
Typical Applications
Palm Fruit Residue / Palm Fiber Cake
High fiber, moderate oil content, excellent structural stability
Olive Pomace
High oil content and stickiness, requiring gentle and uniform drying
Coconut Cake
High fiber and hardness, suitable for drying with upstream size control
How Rotary Drum Dryer Works
Continuous rotating drum with internal lifting flights
Hot air generated by steam, gas, oil, coal, or biomass heating systems
Gentle material tumbling ensures stable heat transfer and moisture removal
Continuous discharge suitable for direct integration with extraction lines
Core purpose:
To reduce high-moisture by-products to a moisture level suitable for solvent extraction (typically 6–10%), while maintaining particle structure and permeability.
Key Technical Parameters (Typical Range)
Feed moisture: 25% – 60%
Final moisture: 6% – 10%
Hot air temperature: 120 – 280°C (adjustable by material)
Residence time: 5 – 30 min
Drum speed: 1 – 5 rpm
Capacity: 1 – 100 t/h (customized by project scale)
Key Advantages for Extraction Plants
Stable moisture control
Prevents solvent emulsification and mass-transfer limitations
Preserved material structure
Gentle drying without excessive fines, improving solvent penetration
High operational safety
Low air velocity and low dust, suitable for oil-bearing fibrous materials
Easy system integration
Can utilize boiler waste heat or extractor exhaust gas
Simple operation & low maintenance
Mature structure, long service life, and low failure rate
Environmentally compliant
Equipped with exhaust gas treatment systems to meet emission standards
Positioning in QIE Drying Solutions
At QIE GROUP, we provide multiple drying technologies to match different project requirements:
New-Type Dryer – higher efficiency, lower energy consumption, compact footprint
Rotary Drum Dryer – mature, robust, and conservative solution for continuous production
👉 Final equipment selection is based on material characteristics, capacity targets, energy structure, and investment strategy.
Get the Right Drying Solution
If your project involves olive pomace, palm oil by-products, or coconut residues,
contact QIE GROUP with your material type, moisture content, and target capacity.
Our engineering team will recommend the most suitable drying system for your solvent extraction process.
