Micro Heat Adsorption Dryer Introduction

China Drying Network 1 What is adsorption? How does adsorption take place?

Adsorption is the phenomenon that the concentration of a substance changes automatically at the interface between two phases. All solids have varying degrees of ability to adsorb the molecules, atoms, or ions of their surrounding media to their surface. From a thermodynamic point of view, the reason why a solid surface can adsorb other media is because there is excess energy on the surface of the solid—physically known as “surface free helium”. It has the tendency to adsorb other substances and reduce its own surface energy.

2 What is an adsorbent? What is adsorbent?

Substances that have a significant effect on specific media are called "adsorbents". The adsorbed material is called "adsorbent." Under certain conditions, the greater surface area of ​​the adsorbent, the stronger its adsorption capacity. Therefore, in order to increase the adsorption capacity of the adsorbent, it must be possible to increase the adsorption.

3 What is a compressed air micro heat adsorption dryer? What are the characteristics?

The compressed air dryer is a compressed air drying device made of the feature that the adsorbent has a large amount of adsorbed water vapor in the air at room temperature. The feature is that the dew point of the compressed air processed by the micro heat adsorption dryer is lower and the water content is less, but the energy consumption is more.

What are the commonly used adsorbents for 4 micro heat adsorption dryers?

Commonly used adsorbents are: silica gel, activated alumina, molecular sieves.

5 What are the forms of the micro heat adsorption dryer?

According to the adsorbent regeneration method, it can be divided into two types: non-thermal regenerative micro-heat adsorption dryer and thermal regenerative micro-heat adsorption dryer. As the non-heat micro-heat adsorption dryer is based on isothermal adsorption, also known as "pressure swing adsorption" hot micro-heat adsorption dryer is based on equal pressure adsorption, also known as "temperature swing adsorption." In actual use, there is a so-called micro thermal dryer. In terms of form, the micro thermal regeneration dryer also heats the regeneration gas, but because it uses a regeneration gas that is derived from its own very low moisture content. Air, so it is also a "pressure swing adsorption" dryer.

6 What role does the muffler play in the micro heat adsorption dryer?

The function of the muffler is to reduce the noise emitted from the regeneration gas of the micro heat adsorption dryer. Since the regenerative exhaust gas has a certain pressure at the time of discharge, the exhaust gas has a high speed, which can cause gas vibration and generate a strong exhaust noise, and generally can reach 80 to 110 dB. According to relevant regulations, when the exhaust noise is greater than 75dB, noise reduction measures are required. In the micro heat adsorption dryer, since a large amount of dust and water vapor are contained in the regenerated exhaust gas, condensate water accumulates at a suitable temperature, which easily causes plugging of the muffler. Therefore, the working conditions in the muffler micro-thermal adsorption dryer are very harsh, and it is a fragile accessory in the micro heat adsorption dryer.

7 What is the role of the orifice of the regeneration valve in the micro heat adsorption dryer?

The athermal micro-heat adsorption dryer relies on taking its own dry air to desorb the adsorbent. The regeneration gas passes through the regeneration valve and enters the regeneration tower. The orifice plays the following roles: 1 Reduces the pressure of the regeneration gas to near-atmospheric pressure. 2 Make the regeneration pressure at least greater than the adsorption bed resistance to ensure that the desorption of water vapor can be smoothly discharged out of the tower. 3 The regeneration gas flows continuously through the adsorption bed for a specified period of time and may be nearly saturated before leaving the tower.

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