Spray Drying Technology is a technology that converts liquid materials into fog droplets through spray, and then contacts with hot air streams to quickly evaporate water, so as to obtain dry powdered products. It is widely used in many fields such as food, medicine, and chemical industry.

Core Principles

1. Atomization: Liquid materials (such as solutions, suspensions, emulsions, etc.) are dispersed into tiny droplets (usually 10-100 microns in diameter) through an atomizer to increase the surface area of the material and accelerate drying.

2. Drying: The droplets are in contact with the high-temperature hot air flow in the drying tower, the water evaporates instantly, and the droplets quickly solidify into powdery particles.

3. Separation: The dried powder is separated from the exhaust gas through cyclone separators, bag filters and other equipment to obtain finished products.

Key Features

• Fast drying speed: The surface area of the droplets is large, the water evaporates quickly, and the drying is usually completed in a few seconds to tens of seconds.

• Good product quality: It can retain the original composition and activity of the material (such as rapid drying of heat-sensitive substances at low temperature can reduce damage), and the fluidity and solubility of the finished product are good.

• Continuous operation: It can realize continuous production from feed material to finished product, which is suitable for large-scale industrial applications.

Typical Applications

• Food industry: production of milk powder, coffee powder, fruit juice powder, condiment powder, etc.

• Pharmaceutical industry: drying of antibiotics, enzyme preparations, extracts of traditional Chinese medicine, etc.

• Chemical industry: preparation of powder products such as catalysts, dyes, detergents, etc.