Centrifugal atomizer; characteristic
The characteristics of a centrifugal atomizer and dryer are basically determined by the characteristics of the atomizer.
(1) Centrifugal spray drying does not require strict filtering equipment. If there is no fibrous liquid in the feed liquid, the liquid channel is basically not blocked;
(2) It can adapt to liquids with higher viscosity (compared with pressure spray drying);
(3) Due to the easy adjustment of the atomizer speed, it is easier to clear the product particle size. Narrow particle size distribution;
(4) When adjusting the processing capacity, there is no need to change the working state of the atomizer. When the feed rate varies within 25%. Can obtain the same product.
The fog caused by kloc-0 is basically of the same level. Droplets move in a combination of radial and tangential directions with almost no initial axial velocity, so the diameter of the dryer is relatively large. Can utilize the space inside the drying room;
Advantages of centrifugal atomizer equipment:
The drying speed is fast, and the surface area of the atomized liquid is greatly increased. In the hot air flow. 95% -98% of water can evaporate instantly. The drying time is only 10 to 10 seconds, which is particularly suitable for drying thermosensitive materials. All products are spherical particles. Uniform particle size, good fluidity, good solubility, high purity, and good quality; Widely applicable; According to the characteristics of the material. Hot air drying or cold air granulation can be used, with strong adaptability to materials; Simple and stable operation. Easy to control. Easy to implement automated operations.
The high-pressure pump generates a pressure spray to spray wet materials from the nozzle. The inner surface of the nozzle is made into spiral grooves. The outlet has a cone angle of approximately 700 °. Wet material will rotate along small grooves, forming a spiral circular motion. Spray at high speed from the conical nozzle. The wet droplets of the material are stretched and thinned, forming fine threads and breaking into droplets. The higher the spray pressure, the smaller the nozzle diameter, the smaller the droplets, and the larger the droplets, the worse the situation will be. In this case, it is necessary to set up a nozzle. And constantly monitor its working status to ensure that there are no droplets during the spraying process.
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