Grape Seed Oil Processing Equipment Subcritical Extraction Equipment and Refining Equipment

The fatty acid composition of grape seed oil is reasonable, and it is an excellent functional edible oil. The extraction methods of grape seed oil include pressing, organic solvent extraction, supercritical extraction and sub-critical low temperature extraction. The oil yield of the pressing method is low, the impurity content is high, and the high temperature is formed in the extrusion process, which destroys the unsaturated fatty acids in the oil. In the process of organic solvent extraction, the unsaturated fatty acids in the oil are destroyed and the nutritional value of the oil is greatly reduced. Supercritical CO2 extraction technology is used to produce grapeseed oil. Although there is no solvent residue, the process has high operating pressure (25 ~ 30 MPa), small equipment scale, large investment, and high production cost, resulting in the cost of grapeseed oil cannot be recognized by the market.

Our company adopts sub-critical low-temperature extraction technology to extract grape seed oil, which makes up for the shortcomings of the above production process. Subcritical (the main solvent is butane, propane) extraction technology, is a new extraction technology in food processing industry, with low boiling point of solvent, gas under normal temperature and pressure, easy to volatilizing characteristics. Subcritical extraction of grape seed oil is to extract and separate grape seed oil from raw materials by using its characteristics.

Advantages of Subcritical Oil Extraction Machine

Subcritical extraction is the drawing out of active substance from natural plants, animals and any other bio material. Pressure of approximately 0.3-0.8 MPa is used in the extraction process using the gaseous agent that turns fluid In such kind of pressure. The state is necessary as it increases permeability, transfer rate and dissolving capability. It has proved effective and efficient in the extraction of oils such as essential and solvent extraction oils; also the plant proteins and natural pigments. 

Low Temperature Solvent Extraction Process

Capacity range: 0.1~200 T/D

 How Subcritical Extraction is Better than Traditional Solvent Extraction?

It ensures the residual solvent is<50ppm with residual oil less than 1% Whatever remains from residual oil meals or cakes still retain their natural active ingredients thus rendering

them of high and better quality than those which traditional oil mill was used on. Solvent needed for processing is less than 8kg way lower than what could have been spent in traditional solvent extraction.

Great deal of energy is saved because steam is not necessary. Subcritical extraction is the best when it comes to extraction of precious oil, vegetable protein or natural pigment. It has high extraction ratio as compared to the traditional method. The environment is well catered for. There is zero pollution due to discharge.

 How Subcritical is Better than Supercritical Extraction?

The word "super" before supercritical does not necessarily make supercritical extraction better than subcritical in any way. On the contrary, it still retains the benefits of supercritical extraction and beats it further on the following:

· You need less capital investment to start it.

· You will incur lower production costs as compared to when you were running supercritical.

· It makes it easier to run it even in a larger industrial scale.

· Less pressure required which translates to lower cost of equipment needed.

· The less pressure also comes in handy in terms of industrialization scale production with which would not be possible in supercritical extraction.