Airflow spray drying processes required process can be divided into two types, one is the jet, which nozzle is provided at the top of the drying tower and hot air atomized liquid material from the stream down and complete the drying process, for and it has a viscosity greater drying certain sensitive materials; the second nozzle is provided in the bottom of the drying tower and hot air atomized liquid material together with the completion of the drying process from the bottom up, good heat resistance suitable for the material dry, traditional small-scale dry water reducer original have adopted this approach.
Airflow atomizer spray dryer, also called air-nozzles, nozzle structure is generally simple, low viscosity and high viscosity of the material can be atomized liquid material, the use of a wider scope, the resulting smaller particles, typically about 5 -30 microns, operating flexibility. But its disadvantages are also obvious, that is, the power consumption of compressed air for atomization of a larger, mainly for high viscosity fluid or material larger molecular weight organic material liquid spray dried.
Airflow nozzle according to the structure can be divided into three two-fluid and fluid, wherein the second fluid can be divided into an outer recirculation and mixing within two.
Clean air into the heated drying tower, the tower using hot air in the second fluid (or three-fluid) liquid feed nozzle variety of material into tiny droplets, and hot air for fast heat exchange fluid evaporated feed water (or solvent), and with the hot air is discharged to obtain a powdery product.
1, especially for viscous, pasty, pasty material and good effect, other devices can not be replaced.
2, experimental variety, wide application of low-temperature drying.
3, the nozzle structure, easy maintenance, low operating costs.
4, good operating environment, dust emissions to meet national standards.
5, drying superior product quality, uniform size, mobility, and final moisture evenly.
Food: amino acids, spices, protein, milk powder, blood meal, soy sauce powder, tea powder, glucose, potassium sorbate, flavors and spices.
Medicine: vitamins, medicine and antibiotics.
Chemical products: disperse dyes, reactive dyes, organic catalysts, white carbon black, washing powder, potassium carbonate, potassium phosphate, all kinds of waste and so on.
Evaporation Kg / h
Compressed air (m3 / min)
Compressed air source (Mpa)
Electric, electric + steam, coal-fired (oil) stove
For heat (Kcal / h)
Fan power (kw)
1, the device according to the actual needs of more than 200 took the design and manufacture;
2, fan power is standard, as Gabe bag dust and solvent recovery means will have to change accordingly.
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