The difference between cold pressing and hot pressing methods

Cooking oil pressing methods has two kinds: cold pressing and hot pressing methods. Henan Doing Company can provide cold pressing and hot pressing equipment according to your basic requirement. Next, I will tell the difference between cold pressing and hot pressing methods. Keep on reading!

Cold pressing method:

There is one special screw oil presser called cold presser which the oilseed feeding temperature is under 80℃, and without the cooking step before pressing.

The features of cold pressing method:

1. Final oil color is best after cold pressing. If your final oil requirement on color has strict standard, we suggest you consider using cold pressing method.

2. The quality of oilseeds cake is best. Due to no high temperature process involved by cold pressing method, the protein in cakes keep original quality and can not be changed even if after pressing. So the oilseed cakes still have high nutritional value.

Hot pressing method:

When the oil seed feeding temperature into oil press machine is above 80℃, it is called hot pressing method.

Generally, there is one cooking machine before pressing, whose function is mainly to adjust the temperature and water content in oil seeds, increase oilseeds temperature, to meet the requirement by oil presser, and increase final oil yield.

The features of hot pressing method:

1. High oil yield: After cooking then pressing, nearly all the oil in oil seeds will be extracted.

2. Smell best: Due to the cooking machine working with high temperature, the final oil smells and tastes best.

3. Low oil residual: After hot pressing, the residual oil in cakes is smallest.

Welcome to contact us! Any questions, our Henan Glory Company(with branch and overseas warehouse in Nigeria)engineers will answer you.

Contact information：
💪My Whatsapp/Wechat: +86 13526627860
🔗Website1: http://www.edibleoilextractionmachine.com

🔗Website2:http://www.cookingoilmillmachine.com

🔗Website3: http://www.cookingoilmillmachinery.com/cooking_oil_press/
📥Email: market@doinggroup.com

What is the difference between hydraulic oil press and screw oil press?

Hydraulic oil press and screw oil press are the main kinds of oil press used in cooking oil production industry, and they have their own advantages and disadvantages. If you don't know how to choose them, Henan Glory Company will introduce you the difference of hydraulic oil press and screw oil press, through the advantages and disadvantages. You can choose suitable oil press to use based on your needs.

1. The introduction of hydraulic oil press

Hydraulic oil press uses physical way to extract oil, and the oil quality is better. Hydraulic oil press is easy to operate and cost less, usually used in family or small scale oil extraction production line. The hydraulic oil press is suitable for cold pressing, especially for sesame, peanut, walnut and so on.

(1) Advantages of hydraulic oil press
Compared with ordinary screw oil press, hydraulic oil press is environmental protection and energy saving. There is less noise during operating. It is physical pressing without heating, no addition of any chemical substances. The major advantages of the hydraulic oil press is that the pressure of the equipment is hydrostatic, and the mechanical friction of the oil is very small, so the oil is very clean and can be consumed directly without any treatment.

(2) Disadvantages of hydraulic oil press
Different from screw oil press, the hydraulic oil press is a closed hydraulic system, if only part of the leakage of oil will make the whole machine useless. Oil yield rate is relatively low, with a single function and low automation.

2. The introduction of screw oil press

Different from hydraulic oil press, the screw oil press presses the oil by continuously pushing the screw shaft forward and squeezing the material. Henan Glory Company provide three types of screw oil press: single screw oil press, screw oil press with automatic temperature control system and screw oil press equipped with vacuum filtration system and automatic temperature control system. Specially, screw oil press equipped with vacuum filtration system and automatic temperature control system is very popular among the small investors. The oil quality is clear and pure with less foam and impurities after pressing.

(1) Advantages of screw oil press
As the screw oil press goes through 3-4 times of squeezing, the oil yield is higher than that of a hydraulic oil press with a single squeeze. And because of the simple mechanical structure of the left and right screw presses, it’s more durable and stable. It also has different model for different processing capacity. Screw oil press is reasonably designed with advanced performance and is suitable for various oil seeds pressing, such as soybean, peanut, cottonseed, sunflower seeds and so on. It can be pressed directly, saving time and costs. The invest cost for the screw oil press is less and the processing capacity is high.

(2) Disadvantages of screw oil press
While screw oil press produces high temperature during work, it will It destroys the nutrients in the oil. The oil has a black appearance and high phospholipid contact. It is necessary to equip a centrifugal filter for fine filtration.

The above is Henan Glory company's introduction of the advantages and disadvantages of hydraulic oil press and screw oil press to make you more aware of their differences and make better choices. We hope that it can be helpful for you. Please feel free to leave a message on our website if you still have any questions.

Contact information：

My Whatsapp/Wechat: +86 13526627860
https://www.cookingoilmillmachinery.com
https://www.doingoilmachine.com
https://www.cookingoilmillmachinery.com/cooking_oil_press/
Email: market@doinggroup.com

Process flowchart for soybean oil production

Soybean oil production machine designed by our factory is the advanced oil processing machinery, characterized by the high oil output rate with good quality, simple design, easy to use and continuous operation. They can use for various raw materials, such as peanut, beans, rape and cottonseeds, sesame, olive, sunflower, coconut, grass seed etc.Next we will mainly introduce process flowchart for soybean oil production.

1,Soybean oil pretreatment & pre-pressing workshop;
A——Flow chart
Soybean →Cleaning →Crushing →Softening → Flaking → Cooking →pre-pressing→crude soybean oil +soybean cake
B——Main equipments in soybean oil pretreatment & pre-pressing workshop

2,Soybean oil extraction palnt workshop;
A——Flow chart
Solvent extraction system→D.T.D.C system→Condenser system→Recovery system
B——Main equipments in soybean oil extraction workshop;

3,Soybean oil refining workshop;
A——Flow chart
Crude soybean oil→Degumming → Deacidification → Decolorization → Deodorization → Refined edible oil
B——Main equipments in soybean oil refining workshop;

Contact information：
My Whatsapp/Wechat: +86 13526627860
https://www.doingoilmachine.com

https://french.cookingoilmillmachinery.com
Email: market@doinggroup.com

How do you manufacture soybean oil?

The methods to manufacture soybean oil are pressing and solvent extraction. Different production volumes and customer needs require different production lines and manufacturing machines. If you want to start a soybean oil production business, how to choose soybean oil manufacturing machines? Next, Henan Glory will give you a detailed introduction to the method to manufacture soybean oil by pressing and solvent extraction method.

For the method to manufacture soybean oil, whether it is the pressing method or solvent extraction method, the oil must be pretreated. The machines used to clean impurities mainly includes vibrating screen, destoner and magnetic separator. The raw materials that have not been cleaned contain impurities such as silt, metal, and pebbles, which will affect the subsequent processes. On the one hand, hard metals and stones will affect the normal operation of the machine, and even cause machine failure in serious cases; on the other hand, silt impurities will absorb part of the oil and reduce the oil yield. And because the particle size of soybeans is large, a crusher is needed to reduce the particle size of soybeans. The purpose of this is to increase the surface area, making it easier to extract the soybean oil. Because the oil content of soybeans is low, a softening pot is needed to soften them and increase the moisture content. After that, an flaking roll is used to press the embryos, turning the oil into thin flakes and shortening the oil path.

The price of soybean pressing production line is relatively low, the oil yield is low, and the residual oil rate is 6%-7%. In addition to vibrating screen, destoner, magnetic separator, crusher, softening pot, and flaking roll, a cooker is also needed to manufacture soybean oil. The function of the cooker is to adjust the temperature and moisture of soybeans. After that, it enters the oil press for direct pressing. After pressing, soybean crude oil and cake are obtained. The crude oil will contain fine impurities, so a filter will be used to remove impurities in the crude oil. Finally, we will get a relatively clean soybean crude oil.

The price of soybean extraction production line is relatively high, the oil yield is high, and the residual oil rate is less than 1%. After pretreatment, The method refers to the use of the miscibility of organic solvents (n-hexane) and oils to extract soybean oil based on the different boiling points of organic solvents and soybean oil. Before extraction, the structure of the oil can be changed with puffing machine, the structural gap can be increased, and the yield can be increased, and then soybean extraction can be carried out. The main machines used in this part include extractor, stripping tower, evaporator, oil-water separator, condenser, stripping tower, etc. Soybean extraction oil contains impurities and substances harmful to the human body. It needs to be refined to remove impurities and harmful substances. Henan Glory Company can provide intermittent, semi-continuous and fully continuous soybean oil refining machine. Besides, we can also match the appropriate soybean oil refining machine for the customer according to the processing capacity of the soybean oil manufacture plant. Moreover, only refined soybean oils can meet the national stability standards and can be sold on the market.

Henan Glory is engaged in the design and manufacturing of soybean oil machines, selling directly at factory prices. It can provide soybean oil manufacturing machines with different processing capacities and can customize machines of different models and processing capacities for customers. If you want to learn more about our machines or the method to manufacture soybean oil, please feel free to contact us, and we will be happy to serve you!

My Whatsapp/Wechat: +86 13526627860 

(https://api.whatsapp.com/send?phone=8613526627860)
https://www.cookingoilmillmachinery.com

https://french.cookingoilmillmachinery.com
Email: market@doinggroup.com

Soya Bean Oil Extraction Machines

Supply soya bean oil extraction machines and equipment of different specifications. If you are interested in soya bean oil extraction machines or have any questions, please feel free to contact me!
Email: lisa@doinggroup.com
Whatsapp: +86 13526627860
Website: www.cookingoilmillmachinery.com
#soyabeanoilpress #soyabeanoil #soyabeanpress #oilextraction #oilplant #oilseedprepress

How to make soybean oil from soybean seeds? How many types of extraction method can be used in soybean oil processing process?

In general, there are two methods for extracting soybean oil: one is mechanical extraction method, also called traditional soybean oil extraction method; the other is solvent extraction method, also known as chemical extraction method. Both mechanical extraction method and solvent extraction method all can achieve the goal of effective extraction of soybean oil.

Soybean oil extraction machine

The difference between mechanical way of soybean oil extraction and chemical way of soybean oil extraction is that: the mechanical extraction method is simple in operation, small in area, but the residual oil rate is high, and the residual oil rate is about 7% to 8%. Soybean oil solvent extraction methods are relatively complex, but the residual oil rate is low , the residual oil rate is less than 1%. You can choose one depending on your capacity and your fuel needs, or you can use two together.

Mechanical extraction method:
The mechanical extraction method refers to a machine that extrudes soybean oil from soybean by increasing the temperature and activating the oil molecules by means of the action of mechanical external force. The mechanical extraction method is suitable for family workshop or small soybean oil mill (1-30 tons). The most commonly used soybean oil press machine are: single screw soybean oil press machine, intergrated soybean oil press machine with filter.

Single screw soybean oil press machine

Integrated soybean oil press machine with filter

Solvent extraction method:
Soybean oil solvent extraction, also known as "extraction", is a process in which oil is extracted from an oil with an organic solvent. Soybean oil solvent extraction method is suitable for large edible oil processing plants (over 30 tons). Soybean oil solvent extraction plant is as follows:

Soybean oil solvent extraction plant

Soybean oil extraction method has been introduce. If you have any questions about the soybean oil extraction process, please call +86 13526627860, the engineer of Henan Doing Company will reply you as soon as possible.


Contact information: 
http://www.edibleoilextractionmachine.com 
whatsapp/wechat/mobile: +86 13526627860
Email: oilmachine@doinggroup.com