Products Description
Advantages of Egg powder spray dryer
High product quality
As the process of Egg powder spray dryer is instantaneous drying, the nutrients (e.g. proteins, etc.) in the egg liquid can be well preserved. Moreover, the formed egg powder particles are uniform in size and have good fluidity and solubility, which makes the egg powder mix well with other raw materials when it is subsequently used in food processing and other fields.
High production efficiency
Continuous production is possible, capable of processing large quantities of egg liquid in a short period of time. This is effective for large-scale egg powder producers to increase production and meet market demand.
Convenient preservation
Compared with egg liquid, egg powder is smaller in size and most of the water is removed, so it is not easy to deteriorate. It can be kept for a long time at room temperature, which reduces storage and transportation costs.
Products details
working principle
I. Working Principle of Egg Powder Spray Dryer
Atomization process
the liquid egg liquid (usually after pre-treatment, such as filtration, homogenization and other steps) passes through a special atomizer. The atomizer will disperse the egg liquid into very fine droplets. Common types of atomization are centrifugal atomization and pressure atomization. Centrifugal atomization uses a disc that rotates at high speed, and the egg liquid is thrown out at the edge of the disc to form droplets; pressure atomization uses a high-pressure pump to pass the egg liquid through a nozzle under a certain amount of pressure, causing the egg liquid to form a mist.
Drying process
These droplets enter the drying tower. Hot air enters at the same time from the bottom or the side of the drying tower, the temperature of the hot air is generally high, usually around 150 - 200 ℃. The droplets are in full contact with the hot air and the water in the egg liquid evaporates rapidly. Due to the small particle size and large surface area of the droplets, the water evaporates very quickly. During this process, the solid components in the egg liquid (mainly proteins, fats, minerals, etc.) gradually form solid egg powder particles.
Separation and collection process
The mixture of dried egg powder particles and hot air is discharged at the air outlet at the top or side of the drying tower. The egg powder particles are separated from the air by means of equipment such as a cyclone or bag filter. The cyclone separator utilizes the principle of centrifugal force to cause the heavier egg powder particles to fall along the walls of the apparatus and be collected, while the baghouse separates the egg powder particles by allowing the air to pass through the bag and the egg powder particles to be blocked by the bag. The collected egg powder can be packaged after cooling.
Application
Application areas
Food Industry
Egg powder is an important raw material for many food products such as baked goods (e.g. cake, bread, etc.), dairy products (e.g. ice cream), meat products (e.g. sausage) and so on. In bakery products, egg powder can provide protein and foaminess to give bakery products a better texture and taste; in ice cream, it can increase the emulsion stability and flavor of the product.
Feed Industry
It can be used as an additive in animal feed to provide high quality protein and other nutrients for animals. For example, adding egg powder to poultry feed can improve the growth rate and egg production rate of poultry.
Pharmaceutical and cosmetic industries
In the pharmaceutical industry, certain ingredients in egg powder may be used to make drug carriers, etc. In the cosmetic industry, protein and other ingredients in egg powder may be used to make facial masks, skin care products, etc., to provide nutrients for the skin.
fAQ
Q:1.How to set the inlet air temperature of Egg powder spray dryer?
A:This is a key parameter. Generally speaking, the inlet air temperature is usually around 150 - 200°C. Higher inlet air temperature can speed up the drying speed of egg droplets and improve the production efficiency. However, if the temperature is too high, it may lead to coking on the surface of the egg powder, affecting the product quality, darkening the color of the egg powder and destroying the nutrients. For example, when the temperature exceeds 220°C, the proteins in the egg powder may be denatured excessively, resulting in an undesirable odor, as well as the loss of some amino acids and other nutrients.
Q:2.How to set the outlet air temperature of Egg powder spray dryer?
A:The temperature of the air outlet is generally 70 - 90°C. The temperature of the air outlet can reflect the completion of the drying process. The outlet temperature can reflect the completion of the drying process. If the air temperature is too low, it may mean that the water in the egg liquid has not evaporated sufficiently, and the moisture content of the egg powder will be too high, which is unfavorable for preservation; if the temperature of the air is too high, it may waste energy, and may also affect the quality of the egg powder.
Q:3.How to set the Centrifugal nebulizer speed of Egg powder spray dryer?
A:The rotational speed is typically in the range of 10,000 - 20,000 rpm. The speed determines the size and distribution of the droplets. Higher speed will produce finer droplets, which is conducive to the rapid evaporation of water, but too high a speed may cause the droplets to be too dispersed, increasing the chance of contact with the wall of the drying tower, leading to the phenomenon of egg powder sticking to the wall.
Q:4.How to set the feeding speed of Egg powder spray dryer?
A:The feed rate is adjusted according to the capacity of the dryer and the drying effect. It is usually measured in kg/hour, e.g. 10 - 50 kg/hour. If the feeding speed is too fast, the number of droplets is too large, and the hot air may not be able to evaporate the water in time, resulting in high moisture content of the egg powder; if the feeding speed is too slow, the production efficiency will be reduced.
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