Rapeseed is a crucial oilseed in China, and the extracted rapeseed oil is a common cooking oil in Chinese households, holding a significant position in the industry. The common processing methods for rapeseed oil include the traditional pressing method and the solvent extraction method introduced from abroad. The traditional pressing method produces higher quality rapeseed oil, but the residual oil content in the pressed cake is high. If left unaddressed, it not only wastes oil resources but also affects the quality of the cake.

On the other hand, rapeseed oil produced by the single solvent extraction method is not as good in quality and health aspects as pressed oil. Additionally, due to the high oil content in rapeseed, a single extraction cannot fully extract the oil. Therefore, many oil mills use a combination of pressing and extraction, known as the pre-press solvent extraction process, to produce rapeseed oil.

The pre-press solvent extraction process involves pre-treating and pressing the rapeseed to extract more than 80% of the oil. The pressed rapeseed cake is then crushed and sent to the extraction equipment to extract the remaining oil. No chemicals are added during the pre-pressing process, and physical pressure is used to extract the oil, resulting in high-quality rapeseed oil that is more popular with consumers. The pre-pressed cake is then subjected to solvent extraction to fully extract the remaining oil, creating better economic benefits, improving oil yield and cake quality, and increasing the oil mill's revenue.

The pre-press solvent extraction process is suitable for processing various oilseeds, such as peanut oil, corn oil, tea seed oil, and cottonseed oil. This process not only produces high-quality pressed oil but also fully extracts the oil, resulting in high-quality cake and improved oil yield and oil mill efficiency.

To purchase pre-press solvent extraction equipment, you can visit Huatai Grain and Oil Machinery Manufacturer. Huatai has been engaged in the research and production of oil equipment for many years and has strong comprehensive strength. Their technical team formulates process flows according to the characteristics of different oilseeds, providing users with suitable and reasonable production processes. They offer free design of plant layout diagrams, equipment layout diagrams, and process flow diagrams. The equipment includes installation and commissioning, and they provide free employee process training services.