Our spray dryer equipment include: small scale spray dryer and large scale spray dryer,the max feed of small scale spray dryer include:2000ml/h and 5000ml/h.

The principle of spray dryer kecil technology:

The basic principle of mesin spray dryer mini is that the material is transported through the filter by the pump to the atomizer at the top of the spray dryer, and the liquid material is dispersed into droplets by the atomizer,because the droplet radius is small, the specific surface area and surface free energy are large, and it is highly dispersed,the vapor pressure on the surface of the mist droplets is greater than that under the same conditions, so the moisture volatilizes very quickly and the product is quickly dried.According to the conservation of mass, conservation of energy and Newton's second law, the spray drying process can be deduced. The thermal drying mechanism of spray drying is theoretically studied, which is of great significance for improving the technical level of spray drying.

Features of mesin spray dryer mini technology:

It dries quickly to ensure product quality.Foods mostly contain protein and sugar, and protein generally produces chemical changes when kept at 60-80°C for several minutes, and it will also produce Maillard reaction when placed at high temperature.Using spray drying, the product can be dried in only 3-10 seconds, which can effectively inhibit the deterioration of food and the loss of aromatic components during the drying process, and ensure the quality of the product.

The dried product has good dispersibility, fluidity and solubility.For dry products, dispersibility, fluidity and solubility are important indicators of product quality.In the spray drying process, the product is dried in hot air, so the product can basically maintain a spherical shape similar to the droplet phase, so that it has good dispersibility, fluidity and solubility.

The production process is simplified, the operation control is convenient, and it is suitable for continuous mass production.Most of the products obtained by spray drying do not need to be crushed and screened, thereby reducing the production process and simplifying the production process.The particle size, bulk density, and moisture of the product can be adjusted by changing the operating conditions within a certain range. The control and management are very convenient, and it can meet the requirements of industrialized large-scale production.

Prevent the occurrence of public hazards and improve the production environment.Because spray drying is carried out in a closed container, it can avoid dust flying during the drying process and avoid environmental pollution.

Problems with spray drying

The advantages of spray drying technology are significant, but its shortcomings cannot be ignored.Its shortcomings are mainly manifested in the large power consumption, low volume heat transfer coefficient and thermal efficiency, large equipment volume, prone to wall sticking, and large investment.

Especially for the problem of wall sticking, if the wall sticking material stays on the hot inner wall for a long time during the spray drying process, it may be scorched or deteriorated, which will affect the product quality.Through the analysis of the types and causes of spray-drying sticky walls, three types of spray-drying sticky walls are found: semi-moist material sticky walls, hot melt sticky walls of low-melting materials and dry powder surface sticking.