PRESSING LINE

The press area is designed to squeeze the oil and prepare the cake for extraction.
The technology uses highly efficient equipment that meets modern requirements, both in terms of material performance, operating conditions, and manufacturing technology.

The raw materials for the pressing area are oilseeds. The quantity and quality of the obtained oil depends on the quality of the input raw material. Given the different properties of oilseeds, the specialists of D.ENERGY optimize the work of the technological line taking into account the specific type of raw materials.

Technological processes are divided into:
  • disposable and double, depending on the number of stages of pressing
  • cold or hot pressing, depending on the temperature at which the process takes place.

In the case of double pressing, the first press is called a "pre-press" or "forpress" press, and the second is called a "final press". Double-extraction technologies are used to obtain the maximum amount of oil and are used for raw materials with high oil content, when the oil content exceeds 30% (oilseed rape, sunflower, etc.).

When pressing the seeds in a cold way, the temperature of the seeds entering the press corresponds to the ambient temperature, and the temperature of the oil usually does not exceed 50 ° C. When hot pressing the seeds are preheated to a temperature of about 100 ° C in roasters. Heating the seeds simplifies the extraction of oil, so in the technology of hot pressing oil yield is greater.
EXAMPLE OF THE LAYOUT SOLUTION OF THE PRESSING SHOP
DESCRIPTION OF THE TECHNOLOGICAL SCHEME OF THE PRESSING SHOP
1
Peeling and winnowing shop of seeds
Before transporting the seeds to production, enters the cleaning system. The seed cleaning system consists of a magnetic separator, which is designed for cleaning from metal impurities and a separator with a set of grates, to obtain the required degree of purification.

Before production, the raw material is collected in a buffer hopper, which provides a continuous flow of seeds for production. The level in the buffer hopper is controlled by devices with the warning alarm system of the maximum and minimum values. The level is adjusted by changing the speed of the conveyor.

After the buffer hopper, the seeds are weighed, then the conveyors are sent to the propulsion equipment. The seeds are divided into seed pods, under which are the seed coils, which divide the rhubarb into 5 fractions: nedorush, nucleus, perev, husk, oil dust.

After seed seed 5 fractions are distributed by conveyors for further processing. The kernel after the seeds is sent to a roller machine after which, together with oil dust conveyors enters the press shop for moisture-heat treatment in braziers.
2
Press shop
The roaster provides a continuous process of moisture and heat treatment. The temperature in each vat is controlled by devices. The product obtained by wet heat treatment is called pulp. Removal of moisture evaporating from the roaster is performed by a fan through an aspiration tube. After frying, the pulp enters the press, at the outlet of which two fractions are formed: cake and oil. The cake after the initial pressing is sent for re-pressing. After double pressing by means of conveyors it is sent through through weights of a cake to a warehouse.
3
Filtration shop
The resulting oil after primary and secondary extraction is collected by an oil auger and sent to the filtration site.

The primary filtration takes place on a vibrating screen, where it is cleaned of large impurities. The purified oil is collected in an oil tank and pumped into the oil tank with a stirrer, where the pumps are fed to the second stage of purification in the filter.

In the filter, the oil is divided into two fractions: purified oil from non-fatty impurities and the solid fraction, which is sent together with large impurities after the vibrating screen to the conveyor of the mark and transported to the roaster for heat treatment.

The filtration process is cyclical and occurs in several stages. The purified oil is sent for storage in oil storage facilities.