Oilseed pretreatment refers to a series of processing procedures such as cleaning, crushing, dehydration and deacidification of raw materials during oilseed processing, so as to improve the processing utilization rate of oil and product quality. However, there are some difficulties and challenges in the process of oilseed pretreatment, which makes the pretreatment work complicated and difficult.

First of all, there are many kinds of oilseeds, and the problems faced by different kinds of oilseeds in the pretreatment process are also different. For example, the seed coat of soybean, cottonseed, peanut and other oilseeds is hard and needs to be crushed to extract oil effectively; Oilseeds such as rapeseed and sunflower seeds contain more impurities and moisture, and need to be dehydrated and deacidified. Therefore, the pretreatment process needs to be adjusted and optimized for different kinds of oilseeds, which increases the complexity of pretreatment work.
Secondly, the equipment and technology involved in the oilseed pretreatment process are highly required. For example, in the process of cleaning oilseeds, it is necessary to use cleaning screens, cleaning machines and other equipment for physical cleaning, and at the same time, it is necessary to cooperate with the use of adsorbents and dust removal equipment for subtle cleaning. In the process of crushing and pressing oilseeds, it is necessary to use crusher, press and other equipment for mechanical treatment, and at the same time, it is necessary to control the process parameters such as temperature and pressure to ensure the processing effect and product quality of oilseeds. The requirements of these equipment and processes are high, and professional technical team and equipment support are needed, which increases the difficulty of pretreatment.
In addition, there are some environmental and safety hazards in the process of oilseed pretreatment. For example, in the process of oilseed dehydration, it is necessary to use dehydrator, deacidification equipment and other equipment to regulate the moisture and acid value, and these equipment will produce a lot of wastewater and waste gas during operation, which will have a certain impact on the environment; At the same time, in the process of oilseed crushing and pressing, noise and vibration will be generated when the equipment is running, which has certain security risks. Therefore, it is necessary to strengthen environmental protection measures and safety management in the process of oilseed pretreatment, which increases the complexity and difficulty of pretreatment work.
To sum up, the difficulty of oilseed pretreatment is mainly due to the variety of oilseeds, the high requirements of equipment and technology, and the existence of environmental and safety hazards. In view of these problems, it is necessary to strengthen technology research and development and equipment renewal, optimize pretreatment process, strengthen environmental protection and safety management, and improve the efficiency and quality of pretreatment work.