How much oil does soybean oil press machine produce per hundred pounds?

Soybean as one of the world’s highest yield of vegetable oilseeds, its oil extraction efficiency directly affects the economic benefits of the oil processing industry. According to the industry data and equipment testing results, soybean oil extraction machine per 100 pounds of soybean oil is usually between 15-20 pounds, but the actual output by the quality of raw materials, process parameters and equipment performance and other factors. The following analysis from the principle of technology, factors and optimization of the three dimensions of the program.

First, the principle of soybean oil extraction technology and oil yield range
Soybean oil extraction is mainly through mechanical pressing or solvent leaching two ways to achieve, of which the screw oil press because of easy operation, low cost has become the mainstream equipment. The core principle is to destroy the cell walls of soybeans and squeeze out the oil through the pressure generated by the rotating screw shaft. According to the difference in equipment type and process, there are significant fluctuations in the amount of oil produced per hundred pounds of soybeans:
Conventional oil yield: between 15-17 pounds for ordinary screw oil presses, and up to 18-20 pounds for some high-end equipment.
Extreme cases: laboratory conditions, through the optimization of pretreatment process, the oil yield can exceed 22 pounds, but need to strictly control the temperature, moisture and pressure parameters.
Second, the core factors affecting the oil yield
Raw material quality
Difference in oil content: soybean varieties determine the oil content, such as genetically modified soybean oil content is generally higher than traditional varieties.
Impurity content: dirt, gravel and other impurities will reduce the oil yield, need to be cleaned through the sieve, stone machine and other equipment pretreatment.
Moisture control: the moisture content of soybeans should be strictly controlled at 8%-12%, too high will easily lead to clogging of the press chamber, too low will affect the fluidity of the oil.
Process parameters
Steaming and frying temperature: soybeans need to be steamed and fried to denature the protein, the optimal temperature is 120-130 ℃, too high is easy to scorch, too low is a decline in oil yield.
Pressing pressure: Screw oil press controls the pressure by adjusting the gap between the screws, usually 15-20 MPa.
Hot material pressing: pressing while it is hot can improve the fluidity of oil, some equipment requires that the pressing be completed within 10 minutes after the soybeans come out of the pot.
Equipment Performance
Pressing chamber design: The new equipment adopts multi-stage propulsion and directional pressure technology, which increases the oil yield by 10%-30% compared with the traditional model.
Degree of automation: Equipped with infrared temperature control and vacuum filtration system, the equipment can reduce manual intervention and improve the stability of oil production.
Maintenance: Wear and tear of screws and clogging of filters will lead to a decrease in oil yield, and regular maintenance is required.
Optimization strategy to improve oil yield
Enhancement of raw material pretreatment
Adopt color sorter to eliminate moldy beans, and reduce fiber content through peeling process.
Introduce puffing machine to destroy the cell structure of soybeans, so that the oil is easier to release.
Dynamic adjustment of process parameters
Establish a database of oil content of raw materials, and automatically adjust the steaming and frying temperature and pressing pressure according to the real-time detection results.
Adopting cold and hot double pressing process: first cold press to extract easy separated oil, then hot press for cake meal, the comprehensive oil yield can be increased by 3%-5%.
Equipment Upgrade and Maintenance
High-carbon steel screws are used to prolong the service life and reduce energy consumption.
Installation of online monitoring system, real-time feedback of pressure, temperature and oil output speed of the press chamber to realize intelligent production.
Industry Cases and Economic Benefit Analysis
Take a medium-sized oil processing plant as an example, after adopting the new screw oil press:
Increase in oil yield: from 16.5 kg/100 kg to 19.2 kg/100 kg, with an annual increase of about 120 tons of soybean oil.
Cost saving: electricity consumption is reduced by 30%, labor cost is reduced by 40%, and the comprehensive profit margin is increased by 15%.
Quality Improvement: Vacuum filtration technology reduces the acid value of gross oil to below 1.5mgKOH/g, which is in line with the standard of first-grade soybean oil.
The oil output efficiency of soybean oil press is the result of the synergistic effect of raw materials, process and equipment. Through refined pretreatment, dynamic process control and intelligent upgrading of equipment, the oil yield can be significantly improved and production costs reduced. In the future, with the application of supercritical extraction, molecular distillation and other new technologies, the soybean oil extraction industry is expected to achieve a breakthrough in resource utilization and product value added.