The device has a stainless steel design, is compact and does not require any accessories, as well as a nozzle cleaner. It will be automatically cleared when it is blocked. Of course, there will be some factors that affect the bulk density, which need to be paid attention to because it affects the final quality.
Factors affecting the bulk density of spray dryers:
1. Equipment type: products with low loose density can be obtained by using the co-current type, and products with high loose density can be obtained by using the counter-current type, which should be selected according to actual needs.
2. Hot air and exhaust temperature: If the temperature difference between hot air and exhaust temperature is large, the bulk density of the product is lower; the temperature difference is small, the bulk density is high. However, the temperature difference should not be too small, because the temperature difference is small and the required air volume is large, thereby increasing the required power and heat energy, which will bring adverse effects, so it should not be too small.
3. Feed concentration: The feed concentration is proportional to the bulk density. The feed concentration is small, the bulk density is small, and the production capacity is small.
4. The influence of additives: If you want to obtain products with low bulk density, such as instant coffee, instant tea, some paint powder, etc. Nitrogen or carbon dioxide can be added to the dry material. However, if inorganic salts, such as sodium chloride, are added, the loose density will increase, so it should be added carefully and not by mistake, as it may have adverse effects.
The supply of spray dryer can be solution, floating liquid, paste, atomization can be realized by rotary atomizer, pressure atomizing nozzle and air-flow atomizing nozzle, operating conditions and design of drying equipment can be based on the product. The desired drying characteristics and particle size are selected.
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