Complete soybean oil production line | Turnkey oil mill manufacturer

QIE Group has focused on oleochemical engineering for over 20 years, providing small-scale automated soybean oil production lines (10–50 tons/day) and industrial-scale turnkey soybean Oil Extraction and refining plant solutions (50–500 tons/day). Our core competitiveness lies in high oil yield, low energy consumption, and long-life equipment. We take full responsibility for the entire process, from consulting, engineering design, equipment manufacturing, installation and commissioning to training and maintenance, helping customers achieve stable production of food-grade and industrial-grade soybean oil and defatted soybean meal at lower unit costs.

1. What is a complete soybean oil production line?

A complete soybean oil production line covers the entire process from raw material receiving to oil packaging: raw material pretreatment (cleaning, destoning, magnetic separation, crushing, conditioning, and flaking), oil pressing or leaching (pre-pressing + leaching or full leaching), solvent recovery and desolventizing (DTDC), crude oil desolventizing and pretreatment, refining (degumming, deacidification, decolorization, deodorization, and winterization/dewaxing as needed), oil filtration and polishing, oil tanks and finished product loading, and utilities (steam, hot water, cooling, compressed air, nitrogen sealing, and exhaust gas and wastewater treatment).

A complete soybean oil production line is an integrated, end-to-end industrial system designed to transform raw soybeans into high-quality, edible-grade refined oil. From an engineering perspective, it is not merely a collection of machines, but a meticulously designed, turnkey solution. At the QIE Group , our solutions cover the entire production lifecycle: from initial pretreatment (cleaning and conditioning), extraction (mechanical pressing or solvent extraction), to the final refining stage.

The "turnkey" concept means we take responsibility for everything—factory layout design, equipment manufacturing, on-site installation, and technical commissioning. By integrating a PLC intelligent control system and online sensors, we ensure precise management of parameters such as temperature and moisture, guaranteeing the stability and repeatability of the production process for our global customers.

2: Advanced extraction and refining technologies enable high oil yields.

Maximizing return on investment (ROI) begins with achieving the highest possible oil yield. Our advanced solvent extraction technology is designed for deep oil extraction, reducing residual oil in soybean meal to ≤ 0.5% . This is achieved through countercurrent extraction of the solvent (n-hexane) with soybean flakes in equipment such as a ring extractor or cable chain extractor , ensuring maximum contact between the solvent and the material.

During the refining stage, we employ physical or chemical refining processes to remove impurities such as phospholipids, free fatty acids (FFA), and pigments. Our high-vacuum deodorization system operates at 220-260°C and 1-2 mmHg pressure, ensuring the finished oil is stable, odorless, and has a high smoke point. This synergistic effect of technology results in extremely low loss rates and superior oil clarity.

3: Small-scale production and industrial-scale production: Customized solutions (10-500 tons/day)

At QIE Group , we understand that "one solution cannot work for everyone." We provide customized solutions based on your specific market needs:

• Small-scale (10-50 tons/day): Ideal for local entrepreneurs or farm processing. These production lines typically focus on mechanical pressing (cold or hot pressing) to produce natural, flavorful oils with lower capital investment.

• Industrial scale (50-500+ tons/day): Designed for large-scale export or nationwide distribution. These plants utilize **High Temperature Drain Process (DTDC)** to increase throughput and produce standardized animal feed or high-protein soybean meal.

Regardless of size, our designs prioritize energy optimization , and our heat recovery systems can improve thermal efficiency by 10-15% .

4: Key components of automated soybean oil production solutions

High-performance factories rely on the durability and precision of their core machinery. Our automated production lines have the following characteristics:

5: Global Success Stories: Turnkey Oil Press Projects Around the World

With over two decades of outstanding engineering experience, the QIE Group has successfully delivered numerous turnkey soybean oil projects in Africa, Southeast Asia, and Central Asia . Our projects are not just about equipment installation; they are industrial landmarks.

• Case Study: We recently completed an automated leaching plant in Central Asia with a daily capacity of 200 tons, equipped with a fully PLC integrated system and a low-temperature desolventizing system specifically designed for the production of high-protein soybean flakes.

• On-site view: Our project sites typically use heavy-duty carbon steel or stainless steel structures, equipped with high-efficiency boiler systems, and the layout is optimized for logistics efficiency and personnel safety.

6: Estimate the costs and return on investment for your Soybean oil production plant.

Investment in soybean oil plants depends on three main variables: capacity (tons/day) , level of automation , and grade of finished oil (crude oil vs. refined oil).

• Operational efficiency: Our system has extremely low solvent consumption (approximately 1.5 kg/ton of material ) and a recovery rate of ≥ 99.5% , significantly reducing your operating costs (Opex).

• Sustainability: Our equipment is manufactured using durable materials and high-efficiency motors, minimizing downtime and maintenance costs and ensuring a faster return on investment.

Frequently Asked Questions about Soybean Oil Production