Unlike traditional extractors, the loop type extractor operates with a percolation-style filtration mechanism, ensuring optimal solvent penetration and maximum oil recovery. The rotating mechanism at the bends of the extractor enhances processing efficiency, while the self-cell solvent spraying system ensures thorough extraction. Additionally, the adjustable-speed discharge system prevents uneven meal distribution, reducing mechanical stress on conveyors and maintaining stable desolventizing performance.

Why Choose a Loop Type Extractor for Solvent Extraction?

In the edible oil industry, solvent extraction is a widely adopted method for maximizing oil yield. While mechanical pressing can recover a portion of oil, solvent extraction plants like the loop type extractor ensure near-complete oil removal using food-grade solvents such as hexane.

Key Features of Loop Type Extractors

1. Optimized Chain Drive System – The extractor operates at low rotational speeds, reducing noise and maintenance costs while ensuring smooth, continuous operation.
2. Material Turning Mechanism – The design allows materials to turn over twice during extraction, ensuring uniform solvent contact and higher extraction efficiency.
3. Shallow Material Layer Processing – Promotes faster solvent drainage, shorter extraction time, and lower residual oil in the meal.
4. Automatic Feed Control – Adjusts the extractor’s speed based on material input, maintaining consistent pressure and minimizing solvent vapor leakage.
5. Advanced Miscella Circulation – Enhances miscella concentration, reduces fresh solvent consumption, and lowers energy costs in evaporation.
6. Modular Construction – Designed in sections for easy transportation and on-site assembly, making it suitable for plants with capacities ranging from 30T/D to 8000T/D.

How Does a Loop Type Solvent Extraction Plant Work?

The solvent extraction process begins when oil-bearing materials enter the extractor. Hexane, a highly effective solvent, dissolves the oil from the meal, forming a mixture called miscella. The oil-free residue, known as meal, is then discharged for further processing.

Key Operational Advantages

• Continuous Processing – The drag-chain conveyor ensures uninterrupted material flow, improving productivity.
• Counter-Current & Co-Current Extraction – Enhances solvent efficiency by maximizing contact between fresh solvent and partially extracted material.
• Complete Material Rotation – Ensures all sides of the material are exposed to solvent, minimizing residual oil content.
• Energy-Efficient Design – A single three-phase motor powers the entire system, reducing operational costs.

Applications of Loop Type Extractors in the Edible Oil Industry

The loop type extractor is widely used in large-scale vegetable oil processing plants for extracting oil from: Soybean, Rapeseed (Canola), Cottonseed, Sunflower Seed, Corn Germ, Peanut, Rice Bran, Flaxseed. Its shallow-layer extraction method makes it particularly effective for materials requiring short extraction times and low residual oil content.

Why KMEC’s Loop Type Extractor Stands Out

KMEC’s loop type extractor is engineered for high efficiency, durability, and cost-effectiveness in solvent extraction plants. Key benefits include:

• Low maintenance requirements due to robust chain-drive mechanics.
• Uniform meal discharge for stable downstream processing.
• Enhanced solvent recovery for economic and environmental benefits.
• Scalable designs to match production demands from small to ultra-large facilities.

For industries seeking high-capacity, reliable, and energy-efficient solvent extraction solutions, the loop type extractor remains a top choice in modern edible oil processing plants.