The waste heat regenerative dryer utilizes the air compressor 2 The high-temperature heat energy of the exhaust gas or the high-temperature compressed air that has not been cooled is used for deep desorption and regeneration of the adsorbent. It is a device that does not require an external heat source. To help everyone understand it, let's introduce some of the working principles of the waste heat regenerative dryer?

Simply put, a waste heat regenerative dryer is a mechanical device that uses thermal energy to reduce the moisture content of materials and is used for drying objects. The waste heat regenerative dryer evaporates and releases the moisture (generally referring to water or other easily volatile liquid components) in the material through heating, thereby obtaining solid materials with a specified moisture content. The purpose of drying is for material use or further processing needs. In fact, during operation, for example, drying wood before making wood models and wood products can prevent product deformation, and drying ceramic blanks before firing can prevent finished product cracking. In addition, dried materials are also easier to transport and store, such as drying harvested grains to a certain moisture content to prevent mildew. Because natural drying is far from meeting the needs of production development, the application of various mechanized dryers is becoming more and more widespread. In addition, you also need to know that the amount of water vapor in the compressed air is determined by the temperature of the compressed air. When the compressed air pressure remains basically unchanged, reducing the temperature of the compressed air can reduce the pressure of the compressed air. The water vapor content, excess water vapor condenses into liquid. In this case, the waste heat regenerative dryer uses this principle to dry the compressed air using refrigeration technology. Therefore, the refrigeration dryer has a refrigeration system.

In addition, what needs to be known when operating a waste heat regenerative dryer is that they are connected in sequence by pipes to form a closed system. The refrigerant continuously circulates in the system, changing its state and exchanging heat with the compressed air and the cooling medium. Of course, there are also adsorption types. Of course, the waste heat regenerative dryer sucks the low-pressure (low-temperature) refrigerant in the evaporator into the compressor cylinder, the refrigerant vapor is compressed, and the pressure and temperature increase simultaneously; the high-pressure and high-temperature refrigerant vapor is pressed towards the condenser, so everyone needs to know that in the condenser, the higher-temperature refrigerant vapor exchanges heat with the lower-temperature cooling water or air, and the heat of the refrigerant is taken away by the water or air and condensed, and the refrigerant vapor turns into liquid. Then you need to know that this part of the liquid is sent to the expansion valve, throttled into low-temperature and low-pressure liquid through the expansion valve and enters the evaporator; so the low-temperature and low-pressure refrigerant liquid in the evaporator absorbs the compressed air, and the heat of the evaporator is evaporated (commonly known as “Evaporation”), and the compressed air is cooled and condensed into a large amount of liquid water; the refrigerant vapor in the evaporator is drawn away by the compressor, and the waste heat regenerative dryer causes the refrigerant to be compressed, condensed, throttled, and evaporated in the system to complete a cycle.

The above article content is an introduction by the editor to some of the working principles of the waste heat regenerative dryer. If you didn't understand it before, you can take a look now. Next issue, we will continue to update relevant information for you. I believe it will be helpful to you.