Rapeseed is one of the main oil crops, and rapeseed oil is one of the components of common oils in daily diet. At present, the main processes for industrial production of rapeseed oil are pressing, extraction and pre-pressing-extraction. The equipment and processing flow used in each process are different. The specific selection needs to be determined according to the actual situation and needs of the rapeseed oil mill.
The rapeseed oil pressing process is the oil pressing process we are familiar with. The rapeseed oil extraction process is common in oil mills with large output. It uses organic solvents to dissolve the oil in the oilseed to form a mixed oil, and then separates and recovers the solvent through evaporation, stripping and other processes to obtain the crude oil. Compared with the pressing process, the rapeseed oil extraction process can fully extract the oil and obtain high-quality cakes and dregs. It has a large processing capacity, high efficiency and high degree of automation, but the quality of the finished oil is not as good as that of the pressed oil. Solvent residues in the oil affect consumers' choices. In order to solve the problem of high residual oil in pressing and the problem of oil quality and nutrition retention, the manufacturer recommends the use of pre-pressing-extraction process for rapeseed oil extraction and processing.
The pre-pressing-extraction process is a combination of the above two processes. First, the oil is physically pressed to extract the oil, and then the residual oil of the pre-pressed cake is extracted by the rapeseed oil extraction equipment. It can not only improve the oil yield and increase the output, but also obtain high-quality, flavorful and nutritious pressed crude oil for subsequent processing of various products.
Rapeseed itself is an oil with a high oil content. After the oil is pre-pressed, the oil can be fully extracted by a single extraction process of the rapeseed oil extraction equipment. The rapeseed oil extraction equipment produced by Huatai Oil Machinery can control the extraction residual oil rate within 1%, improve the oil yield, and make full use of oil resources. The quality of the extracted rapeseed cake is high and can be used for animal feed processing or vegetable protein extraction, which increases the benefits of the rapeseed oil mill.
When choosing the pre-pressing-extraction production line, the technical process, equipment quality and after-sales service of the oil equipment manufacturer are the aspects that need to be considered. The solvents used in the edible oil production line are flammable and explosive items. Therefore, when designing and building the cooking oil production line, we must choose manufacturers with good technology, rich project case experience, and reliable after-sales service. Here we recommend Henan Huatai Cereals and Oils Machinery Co., Ltd., which has been engaged in oil equipment processing for 37+ years and provides equipment and process services to many oil mills. The manufacturer has rich experience and cases in edible oil projects. The stable operation of the cooperative oil mills is guaranteed. The equipment is sold all over the world, free on-site installation and commissioning, employee training, and good customer reputation. Interested customers can go to our factory and cooking oil projects for inspection.
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