Principle of preheating and drying recycled plastic particles
Time:2021-11-19 14:25:30 Click 5The principle of preheating and drying recycled plastic particles is as follows: firstly, the heater heats the matrix, then the matrix transmits the heat energy to the coating that radiates far infrared, and then the coating converts the heat energy into radiant energy to radiate far infrared.
Because the preheated and dried materials have the characteristics of high absorption rate of far-infrared rays, the recycled plastic particles can absorb the far-infrared rays of specific wavelengths generated by the far-infrared preheating and drying device, so that their molecules have intense resonance, so as to rapidly increase the temperature inside the materials and achieve the purpose of preheating and drying. Due to radiation heat transfer, far-infrared preheating and drying can heat the materials at the same time on the internal and external surfaces at a certain depth, which not only shortens the preheating and drying time and saves energy, but also avoids the qualitative change of materials caused by uneven heating, improves the quality of preheating and drying, and its preheating and drying temperature can reach about 130 ℃.
On the other hand, because the heat source does not directly contact the material, it is easy to realize continuous preheating and drying, which is mainly suitable for preheating and drying of large quantities of recycled plastic particles. The far-infrared preheating and drying equipment has the advantages of small scale, simplicity, simple manufacture of door dust collector and low cost.
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