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Microwave technology and oil related research, mainly focused on microwave treatment of oils assisted extraction of oils and fats. The influence of microwave pretreatment on oil is mainly reflected in the following aspects.
Animal fat oil extraction microwave drying machine is a kind of microwave drying machine, which is obtained by the special movement of electrons in the magnetic field through DC or 50Hz alternating current on the electro-vacuum device or semiconductor device. This motion can be explained simply as follows: from the point of view of dielectric structure, one kind of molecule is called non-molecule dielectric, and the other kind is called molecule dielectric. Microwave drying equipment in general, they are arranged irregularly, if they are placed in an alternating electric field, the orientation of the neutral molecules of these media also changes with the electric field.
Change by change, which is called change. The stronger the applied electric field is, the stronger the microwave drying equipment will be. The faster the applied electric field changes, the faster the microwave drying equipment will change. The more intense the thermal movement of molecules and the friction between adjacent molecules will be. In this process, the conversion of electromagnetic energy to thermal energy is completed. When the heated material is placed in the microwave field, the molecule of microwave drying equipment swings and rubs back and forth with the microwave frequency of billions of times per second. The heat generated by microwave drying equipment is enough to make the material hot-dry in a very short time.
Microwave drying machine is completely different from traditional drying methods. It is a process in which the dried material itself becomes a heater without heat conduction. Therefore, although it is a material with poor heat conductivity, drying temperature can also be achieved in a short time.Regardless of the shape of each part of the object, the microwave drying equipment can make the surface of the object penetrate electromagnetic wave uniformly at the same time and generate heat energy. Therefore, the microwave drying equipment has good drying uniformity and will not produce endogenous phenomenon of coke.Microwave drying equipment has thermal and biological effects. Microwave drying equipment can sterilize and prevent mildew at lower temperature. Because of its fast drying speed and short drying time, it can preserve the activity of materials and vitamins, original color and nutritional ingredients in food to a great extent.
Because microwave energy of microwave drying equipment is controlled to work in metal drying chamber and waveguide, microwave leakage is less, radiation hazards and harmful gas emissions are not produced, waste heat and dust pollution are not produced, food is not polluted, microwave drying equipment is not polluted the environment.
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