Application of Microwave Dryer Price Technology in Traditional Chinese Medicine Production

Since the advent of microwave dryer prices , in the 1960s, Zui was used for military and wood drying. In the 1970s, it was applied in the fields of sterilization, diagnosis, tissue fixation, and immunochemistry in the fields of medicine and biology.

The microwave dryer technology belongs to physical catalysis. By controlling the reaction conditions, the reaction rate can be increased, and the high cost of the chemical catalyst and the post-treatment of the complex reaction are avoided. The microwave is an ultra-high frequency oscillating wave between 1 m and 1 mm, and the organic carbon chain structure can penetrate as a whole, and the energy rapidly reaches the functional groups of the reactant. Due to the imbalance of intramolecular charge distribution, polar molecules can quickly absorb electromagnetic energy in the microwave field, and generate thermal effects by high-speed rotation of billions of times per second through molecular dipole action. Microwave dryer heating is caused by the movement of the molecule itself. Therefore, the temperature of the heated system is uniform. The larger the molecular dipole moment, the faster the heating and the faster the reaction. Because it is "internal heating", the microwave dryer acts as the main reactive functional group in the dominant trend of the reaction, and can quickly reach the activation energy to carry out the reaction, reducing the degree of side reaction and increasing the yield. The reaction mechanism and results are quite different from those of conventional heat conduction and heat convection.

Microwave dryer is mainly used for food, medicine, chemical industry, condiments, vegetables, marine organisms, etc. Dry, sterilized bulk, granular and powder materials. Microwave dryer has low energy consumption, continuous, rapid drying and sterilization. Features such as temperature and speed can be set and adjusted according to material requirements. The microwave dryer has rapid heating, strong penetrability and uniform energy distribution, which is completely different from the traditional heating method.

Since the microwave acts directly on the material, the microwave dryer has no additional thermal energy loss and is more than 30% energy efficient compared to the far infrared heating mode. The microwave dryer can generate heat energy on the surface and inside of the material due to the electromagnetic wave penetration, and the part with high water content absorbs the microwave power better, so the heating is uniform. The thermal and biological effects produced by the microwave dryer can degrade the bacterial protein and lose its nutrition, structural dysfunction, and can not normally metabolize, multiply and die. Microwave dryer price can be controlled by human machine interface PLC programming according to user requirements. For non-polar molecules, because of the inability to produce high-speed motion in the microwave field, the reaction is small or even ineffective. For polar molecules in non-polar solvents and non-polar substances in polar media, the heating rate is large. To reduce. At present, the heating rate, solvent properties, microwave output effects, pressure effects, reactant polarity and microwave energy absorption in the microwave dryer reaction are all discussed and studied.

Microwave organic chemistry reactors have also been developed abroad, such as the CSIRO continuous microwave reactor (CMR) and the CSIRO microwave batch reactor (MBR) published in 1995. Most researchers in China use microwave dryers and beakers for experiments. Even some foreign universities have opened organic experiments on the price of microwave dryers in the organic experiment class of students. I hope that the vast number of chemists in China can have enough understanding and attention to the development of microwave organic chemistry.