There are two common types of compressed air dryers: refrigerated compressed air dryers and adsorption dryers. Refrigerated dryers offer advantages such as no air loss and low energy consumption, but they have limitations regarding dew point temperature. While adsorption dryers offer the advantage of a low dew point, they also have disadvantages such as high regeneration gas loss and high energy consumption.
01 Applicability
First, the dryer must meet some basic requirements, achieving the desired drying effect, product quality, and drying speed.
02 Operation Method
The operation should be simple and easy to learn, saving labor time and costs.
03 Simple Structure
The dryer structure should be simple, and the parts should be easy to replace and purchase.
04 Drying Temperature
Drying temperature refers to the temperature of the air entering the drying drum. Due to factors such as molecular structure, specific gravity, specific heat, and moisture content, there are limitations to the drying temperature. Too high a temperature can cause some additives in the raw materials to volatilize, deteriorate, or clump together; too low a temperature may prevent some crystalline raw materials from reaching the required drying conditions.
05 Drying Time
Drying time refers to the pre-drying time of the raw materials before molding. If the drying time is too long, the raw materials may deteriorate, clump together, or waste energy. If the drying time is too short, the moisture content will be too high.
06 Airflow
Airflow represents the dehumidification capacity of the dryer. Airflow is the medium that carries away moisture from the raw materials, and the amount of airflow directly affects the dehumidification effect. Too much airflow can lead to overheating and affect the stability of the dew point; too little airflow means that the moisture in the raw materials cannot be completely removed.
07 Dew Point Temperature
Dew point temperature is an indicator of the dryness (or humidity) of a gas. The less moisture in the gas, the lower the dew point temperature. A good dryer should be able to achieve a dew point temperature of -40°C.