Are you curious about the key differences between cold pressing and hot pressing in the oil extraction process? And why is the hydraulic oil press becoming the top choice for high - end edible oil processing? Let's delve into these questions.
The essence of cold pressing and hot pressing lies in their different approaches to extracting oil from soybeans. Cold pressing is carried out at a low temperature, usually below 60°C. This method preserves the natural nutrients and flavors of the oil. For example, cold - pressed soybean oil has a lighter color, with a color score of around 2 on the Lovibond scale, and retains more vitamin E and unsaturated fatty acids. On the other hand, hot pressing involves heating the soybeans to a higher temperature, often above 100°C. While it can achieve a higher oil yield, it may also result in some nutrient loss and a stronger, sometimes less desirable flavor. The color of hot - pressed oil can reach a score of 4 - 5 on the Lovibond scale.
Hydraulic oil presses are well - known for their ability to perform low - temperature pressing. The working principle of a hydraulic oil press is based on the application of hydraulic pressure. It slowly squeezes the soybeans, similar to the concept of “slow and steady wins the race”. This slow process is gentle on the raw materials, ensuring that the nutrients and flavors are well - preserved.
An expert in the oil industry once said in a quote: “Hydraulic oil presses are like the artisans of the oil - making world. They create high - quality oil with meticulous care.” This view highlights the unique advantage of hydraulic oil presses in producing high - end edible oils.
Let's look at a real - life example. An organic oil factory switched to using a hydraulic oil press. After the change, they were able to achieve a 30% premium on their oil products. This is because the high - quality oil produced by the hydraulic press met the growing demand for premium and healthy edible oils in the market.
When it comes to choosing between a hydraulic oil press and a screw oil press, several factors need to be considered. Let's compare them in terms of production capacity, energy consumption, and maintenance costs.
| Factor | Hydraulic Oil Press | Screw Oil Press |
|---|---|---|
| Production Capacity | Relatively lower, suitable for small - to - medium - scale production, with an average daily output of 1 - 5 tons | Higher, more suitable for large - scale industrial production, with a daily output of 5 - 20 tons |
| Energy Consumption | Lower, about 20 - 30 kWh per ton of oil produced | Higher, around 40 - 60 kWh per ton of oil produced |
| Maintenance Cost | Lower, with fewer moving parts and less wear and tear | Higher, due to more complex mechanical structures and more frequent part replacements |
Many modern hydraulic oil presses are equipped with integrated oil filtering systems. These systems can effectively remove impurities from the oil, improving the purity of the oil. With an integrated filtering system, the oil can reach a purity level of over 99%. This not only meets the high - quality requirements of the market but also promotes the overall upgrade of the edible oil industry.
Are you still unsure which oil press is the best fit for your production needs? Click here to learn which oil press is suitable for your production scale and make an informed decision for your business!
