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Factors Affecting Dehumidification Performance of Honeycomb Rotary Dehumidifying Dryer

2018-05-07
1, the impact of the rotating speed

Increasing the rotating speed of the honeycomb rotary dehumidifying dryer can enhance the heat transfer effect. However, because the rotational speed is too high, the time for the moisture absorbing agent to stay in the regeneration zone becomes short, and sufficient regeneration cannot be achieved, resulting in a decrease in the dehumidification effect.

Decreasing the rotating speed of the honeycomb rotary dehumidifying dryer will cause the moisture absorbing agent to stay in the dehumidification zone for a long time, which will cause the adsorbent in a part of the regeneration zone near the regeneration zone to lose the ability to continue dehumidification and reduce the dehumidification effect. Therefore, according to the actual situation, choosing the right rotation speed is the key step. The general rotation speed is 8-22r/h.

2. Effect of sector angle in the regeneration zone

The regenerative fan angle mainly reflects the proportion of the moisture absorbent in the dehumidification zone and the regeneration zone. In the condition of certain air flow rate, too small fan angle in the regeneration zone will not allow the adsorbent to fully regenerate and reduce the dehumidification effect; the regeneration zone will be too large, the dehumidification zone and the cooling zone will be reduced, and the adsorbent will not be sufficiently cooled. It also reduces dehumidification performance, so there is an optimal ratio.

In practical applications, the requirements for the sector angle of the regeneration zone should be taken into consideration in the following respects: the regeneration of the adsorbent is easy and can be fully regenerated; the humidity of the processing air at the outlet can also be lowered very low; the dehumidifier has a higher performance coefficient. Only by satisfying the above comprehensive requirements can the fan angle of the regeneration zone be better determined.

3, the influence of runner body parameters and moisture absorber mass fraction

The dehumidifying rotor is composed of a non-hygroscopic supporting material and a hygroscopic agent. The percentage of the total mass of the hygroscopic agent is called the hygroscopic agent mass fraction f. Studies have shown that under the same mass, the value of f increases, the mass of moisture absorber increases, and the moisture adsorbent mass fraction has the greatest influence on the dehumidification performance.

1) Effect of moisture absorber temperature

In the process of the dehumidification zone, the temperature of the moisture-absorbing agent needs to be relatively low, and the lower the same moisture-absorbing agent is, the stronger the moisture-absorbing ability, and the higher the temperature of the moisture-absorbing agent in the regeneration process is, the more favorable it is to increase the pressure of the water vapor on the surface of the moisture-absorbing agent. Accelerate the vaporization of the moisture absorbent.

2) Effect of surface area of moisture absorber

Moisture absorbent surface area is the area in contact with the gas: the more pores, the smaller the pore size, the greater the contact area is more conducive to moisture absorption, and reduce the diffusion distance within the moisture absorbent, shorten the regeneration period, but will make the airflow penetration resistance increase.

The factors affecting the dehumidification performance of honeycomb rotary dehumidifying dryers are introduced here today. There are many factors that affect the dehumidification performance of the honeycomb rotary dehumidifying dryer. In actual work, it is necessary to reasonably set the relevant parameters according to the actual situation, so as to ensure that the honeycomb rotary dehumidifying dryer achieves a good dehumidification effect.
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