A practical guide to improving oil yield and reducing impurity residue in sunflower seed oil press processes.

Key points of sunflower seed oil press process: key technologies to improve oil yield and reduce impurity residue

As one of the world's most important vegetable edible oils, the optimization of sunflower seed oil press technology directly impacts yield and oil quality. This article focuses on the complete process of sunflower seed oil production, from raw material preparation to finished product pressing, highlighting three core aspects: shelling and separation efficiency , temperature control during pressing and steaming , and crude oil filtration technology. It provides an in-depth analysis of how to improve oil yield and reduce oil impurities, supporting precise strategies for factory technicians and management decision-makers.

Sunflower seed oil processing flow and key process nodes

Sunflower seed oil press mainly involves the following steps:

1. Metering and cleaning: Remove non-seed impurities, prevent equipment blockage, and ensure smooth subsequent processes.
2. Shelling and separation: Improving the efficiency of kernel and shell separation directly determines the oil yield and impurity content.
3. Pressing and steaming: Temperature and time control affect the structure and fluidity of the oil, and most importantly, the oil yield.
4. Pre-pressure and main pressure: Uniform pressure ensures maximum oil output.
5. Crude oil filtration: Removes particulate impurities, reducing the burden on subsequent purification.
6. Leaching treatment: maximizes the recovery of residual oils and effectively reduces sludge content.

Typical process bottleneck analysis and its impact

Common challenges in sunflower seed oil press include:

Practical solutions: Precise optimization of equipment and process parameters

The selection and regular cleaning of the spray-type magnetic separator are the first line of defense against iron impurities; it is recommended to clean it at least three times a day. The shelling machine should be monitored in real time for shelling rate and whole kernel rate, and the machine speed and shelling roller gap should be adjusted to achieve a sunflower seed kernel separation rate of over 95% .

For the steaming and frying process, a multi-stage temperature control system is recommended. The first stage maintains a temperature of 85-90℃ for initial drying, while the second stage raises the temperature to 110-115℃ to enhance protein denaturation, ensuring uniform embryo texture and increasing oil yield by 3%-6%. The steaming and frying process is equipped with an infrared thermometer and an automatic temperature control feedback device to keep temperature fluctuations within ±3℃.

For crude oil filtration, a multi-stage filtration system is recommended, proceeding through multiple steps from coarse filtration (approximately 100 microns) to fine filtration (20-30 microns), effectively reducing suspended solids content by 30%-40%. Filtration equipment requires monthly backwashing maintenance to ensure the filtration area remains at over 90% efficiency.

Pay attention to these 3 easily overlooked details to easily increase oil production.

• Selected Seed Pre-treatment : Precisely removes seeds with excessive moisture content or damaged seeds to ensure stable pressing quality.
• Layered filtration equipment application: Enables effective step-by-step cleaning, avoiding overload and clogging of the filtration system.
• Intelligent temperature control feedback: Automatically adjusts steaming and frying temperature to cope with batch differences in raw materials, ensuring oil quality and yield.

Successful cases from Tencent show that production lines that pay attention to these details can increase overall oil yield by an average of 6%, reduce impurities by about 20%, and significantly reduce production costs.

Leading technology, choosing the optimal production line. With 30 years of industry experience, QIE GROUP integrates intelligent manufacturing and data-driven approaches to inject efficiency and stability into your sunflower seed oil production. Want to learn more?