Project Description

Pressure Nozzle Spray Dryer

Pressure Nozzle Spray Dryer Application

The pressure nozzle spray dryer is widely used for food and beverage products drying such as fatty milk powder, protein, cocoa milk powder, substitute milk powder, egg white (yolk), food and plant juice powder, oats, banana powder, coconut milk powder, ginger powder, chicken juice, coffee extract, starch, instant dissoluble tea, soybean, peanut protein, hydrolysate, sugar, corn syrup, corn starch, glucose, pectin, malt sugar, sorbic acid potassium, and etc. It can also be used for drying Chinese traditional medicines, pesticides, antibiotics, medical drinking agents, and etc.

pressure spray dryer for fruit juice powder

Pressure Nozzle Spray Dryer Working Principle

The pressure nozzle spray dryer uses a high-pressure diaphragm pump to spray the material liquid from a nozzle hole with a diameter of 0.5-1.5mm under a pressure of 7-20Mpa. Due to the high pressure and small nozzle hole, the material liquid is quickly atomized to a diameter of 10 -20μm mist droplets through amply heat exchange (5-30 seconds) after being in contact with the hot air, so that the solid matter in the material is dried into powder granules, most of the powder granules are collected from the outlet of discharge at the bottom of the dryer. The wasted air and fine powder are separated by the cyclone, the wasted air is exhaust from the draft fan, and fine powder is collected at the bottom of the cyclone. There is a second-grade duster equipped at the outlet; therefore, the recovery rate of the finished powder granule can be 96% to 98%.

Pressure spray dryer machine

Pressure Nozzle Spray Dryer Feature

  1. Rapid drying speed. The surface area of the material will be enlarged greatly when the liquid raw material is atomized and 95% – 98% of water can be evaporated instantly in the hot airflow. The drying time only need to take several seconds. This dryer is especially suitable for heating-sensitive materials.
  2. The finished product is ball granule with a uniform size. Its fluidity and solubility are good. The quality and purity of the product are very high.
  3. Depend on the characteristics of raw material, the dryer can use hot air to dry or use cool air to granulate.
  4. Simple and stable operation. The control system is convenient which is easy to realize automatic operation.
Pressure spray dryer structure drawing

Technical Parameter

Water evaporation capacity50KG/H100KG/H150KG/H200KG/H300KG/H500KG/H1000KG/H
Diaphragm pump pressure2-10MPA
Inlet air temperature140-350℃
Product moisture content<5%, can reach to 0.5%
Material recovery rate>97%

Video Performance