The development of spray drying should follow the path of environmental protection. In the development of the equipment, attention should be paid to the comprehensive use of talent and energy saving, and the automatic control skills and operating conditions of the spray dryer should be guaranteed. Because environmental protection is getting more and more attention, it is inevitable to improve the boring equipment in environmental protection.

Its management in the industry is mainly based on the different needs of different industries, so it is difficult to complete the results of joint development in the development. Under the condition that the boring skills are improving, they continue to develop the boring skills. As for the boring equipment, it can be better used by people in the whole development.

The hot air temperature should not be too high, because if it is too high, it will bring bad effects, such as making the quality of the finished product worse after drying. Therefore, if you want to add the temperature, you should first ensure that the product quality can be guaranteed, and then add it appropriately.

The hot air temperature mainly affects the bulk density of the dry products and the transpiration intensity of the dry room. If the food is dry, the temperature should not be higher than 177 ℃ to avoid hollow particles. However, if the heat sensitive materials are right or wrong, high-temperature hot air should be selected as far as possible so that the transpiration intensity can be strengthened.

Drip atomization:

1. Pressure atomizer: the solution flows out of the nozzle and drops are distributed in drops. The reason for this phenomenon is the formation of surface tension, which constitutes unstable cylindrical droplets. Because the diameter of liquid activity is smaller than the average value, a liquid film is formed in this direction. Because the surface tension of the film is greater than the thickness of the film, the liquid will be transferred to a thin place, become a long line, and then distribute droplets.

2. Rotary atomizer: the viscosity and surface tension of the solution affect the atomization process. After forming water drops, they are thrown from the edge of the disc.

3. Pneumatic atomizer: low gas-liquid velocity.

Filiform atomization:

1. Pressure atomizer: when the solution is gradually added, the liquid column will oscillate along the horizontal, slow and straight direction. A solution to the spiral oscillation of filaments. Many small droplets will be distributed quickly at the end of filaments.

2. Rotary atomizer: the wheel speed and feeding solution speed are high, and the materials are pulled into many liquid filaments in a hemispherical shape. Add liquid volume and liquid line volume. When it is saturated, the liquid filaments become thicker, but the number is stable. Liquid lines tend to break into small droplets.

3. Pneumatic atomizer: when the wind speed is high, the friction of the liquid saw is very large. One end of the liquid column is fixed, and the other end is pulled into a slender line. Small water drops are formed after cracking.