Rapeseed Oil Pressing Process Optimization: Screw Oil Presses Enabling Efficient & Green Production

Against the backdrop of increasingly stringent environmental and high-efficiency production requirements in the global vegetable oil market, oil mills are demanding higher performance standards for rapeseed pressing equipment. Traditional pressing processes often face problems such as fluctuating oil yield, high energy consumption, and excessive residual oil in the oil cake, severely impacting oil mill profitability and the achievement of green production goals. To address this, QIE Group's large-scale screw oil presses, through optimized screw design and continuous pressing processes, achieve a 10%-15% increase in oil yield, an 8%-12% reduction in energy consumption, and a residual oil rate controlled at 5%-7%, helping oil mills achieve stable returns on investment and enhanced market competitiveness.

Core challenges in rapeseed oil pressing

In summary, these pain points not only affect the daily production of oil mills, but also directly relate to return on investment and market competitiveness. Therefore, optimizing the pressing process has become a necessary choice.

Analysis of the technological challenges in rapeseed oil pressing

Rapeseed itself has a high hull content and also contains erucic acid and pectin, which places high demands on the design of pressing equipment and process parameters.

• Steaming and frying temperature : usually needs to be controlled between 100℃ and 150℃. Too high a temperature will easily damage the oil quality, while too low a temperature will result in undercooked material and low pressing efficiency.

• Moisture content : Keep it between 7% and 10%. If the material is too dry, it will easily damage the screw. If it is too wet, it will affect the flowability of the material and the stability of the oil output.

• Continuous pressing requirements : Operators must ensure the equipment operates continuously and efficiently, avoiding "bottleneck" and downtime. 👉 ( What factors affect the lifespan and stability of an oil press? )

Example scenario: In actual operation at an oil mill in Indonesia, precise control of steaming and frying temperature and moisture content enabled the screw oil press to run continuously for 8 hours, maintaining a stable oil yield and controlling the residual oil rate at 6%, thus significantly improving production efficiency.

Technical Highlights of QIE Group's Large Screw Oil Press

• Optimized screw structure: The multi-segment screw design establishes a reasonable pressure gradient, achieving more uniform material pressing and increasing oil yield per unit time. 👉 ( How to choose oil pressing equipment? 3 key points )
• Continuous pressing process: Breaking away from traditional intermittent pressing, continuous operation significantly reduces energy consumption by 8%-12%, ensuring stable production capacity and energy conservation and environmental protection.
• Modular design: Simple and quick maintenance, supports rapid disassembly and cleaning, reduces downtime, and improves the overall efficiency of the production line.

Data verification: Operational data from 10+ large overseas and domestic oil plants show that after using QIE equipment, the average oil yield increases by 10%-15%, and the residual oil rate remains stable at 5%-7%, which is significantly better than the industry average.

The important coordination between pretreatment and steaming/frying processes

Proper pretreatment is a prerequisite for efficient pressing:

• Precise moisture content control : ensures material flowability and screw pressure transmission efficiency.

• Steaming and roasting temperature and softening time : soften the kernels, improve crushing efficiency, and achieve the best oil yield.

• In collaboration with QIE equipment : continuous pressing performance and scientific pretreatment form a closed loop, achieving green and efficient production.

Case studies and results verification

Taking a large oil mill in Indonesia as an example, after introducing our screw press, its production capacity increased by about 18% and its unit power consumption decreased by 14%, significantly saving production costs. Frontline operators reported: "The equipment is easy to operate and has a long maintenance cycle, which greatly reduces our daily workload." The equipment engineer added: "The optimized screw structure greatly improves pressing efficiency, ensures stable oil output, shortens the customer's investment return cycle, and significantly enhances competitiveness."

Customer testimonial: "After adopting the QIE large-scale screw oil press, we not only significantly improved the oil yield, but also achieved remarkable results in energy saving, realizing green and efficient production."

Industry Trends and Equipment Upgrade Timing

With the advancement of international green production policies and energy conservation and emission reduction regulations, upgrading equipment in oil plants is imperative.

• It is recommended that after 5-7 years of use, an assessment be made on whether to upgrade to a high-efficiency screw oil press based on production load, energy consumption, and maintenance costs.

• Increased levels of automation and energy efficiency are key factors in maintaining market competitiveness.

FAQ

Q1: Are your large screw oil presses compatible with a variety of oilseeds?

A: Yes. Our equipment is designed to accommodate the characteristics of various oilseeds. In addition to rapeseed, it is also suitable for soybeans, peanuts, sunflower seeds, etc., ensuring the pressing efficiency and oil quality of different raw materials are stable.

Q2: Is equipment maintenance convenient?

A: The equipment adopts a modular design, key components are easy to disassemble and replace, maintenance cycle is long, and the factory provides technical support and spare parts, reducing downtime and ensuring continuous production.

Q3: Is there any real data to support the increase in oil yield and energy consumption?

A: Actual operating data from more than 10 large oil mills overseas and in China show that using QIE large screw oil presses increases the overall oil yield by 10%-15% and reduces unit energy consumption by 8%-12%, achieving the dual goals of green and high efficiency.

Q4: Is operator training complicated?

A: Our equipment has a simple user interface, modular design for easy assembly and disassembly, and the factory provides complete training and technical support, so new employees can master daily operation and maintenance procedures in a short period of time.

Q5: How to handle oilseed cake with high residual oil content?

A: The residual oil rate should be controlled within 5%-7%. If it is still too high, it can be further recovered through solvent extraction or secondary pressing, while ensuring oil quality and optimizing production costs.