Applications of low-pressure, high-volume compressed air dryers
Release time:
2021-08-09
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Abstract
Many bulk carriers ply the waters between the ports of various countries. The same cargo holds transport different raw materials between different countries. In this case, cleaning the cargo holds becomes the most important step in ensuring that the cargo is not contaminated. Before using compressed air purification equipment, users typically used the following method: using a low-pressure (0.1 MPa), high-volume blower to purge the cargo hold. However, the moisture, oil, and other particulate impurities in the gas caused new contamination of the cargo hold during the purging process. Using dry and purified low-pressure compressed air can effectively solve this problem. The question is what drying method to use. If a freeze-drying method is used, the low-pressure compressed gas will have poor heat exchange efficiency, making it necessary to increase the heat exchange area of the heat exchanger. In this case, the drying process of the freeze dryer is similar to the operation of a normal pressure air conditioner. Under high-volume operation, the heat exchange area is large, the freeze dryer is bulky, and the purification effect is not ideal due to uneven air distribution. However, using an adsorption drying and filtration drying and purification method successfully solved this problem.
Pressure swing adsorption requires adsorption under high pressure and desorption under low pressure. Desorption under low pressure is possible, but adsorption under high pressure cannot be solved. Temperature swing adsorption, on the other hand, adsorbs at low temperatures and desorbs at high temperatures. Desorption at low pressure and high temperature is not a problem; the problem is how to improve the adsorption performance of the adsorbent at low pressure. The key to solving this problem is: 1. Using adsorbents of special diameter and size to improve the adsorption capacity of the adsorbent at low pressure; 2. Using a special tank structure to extend the contact time between the adsorbent and the gas, and accordingly improve the design of the filter element.
In summary, a blower heating regeneration adsorption dryer is selected.
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Contact Information
200 meters east of Zhangjiawan Lishan Temple Village Committee, Tongzhou District, Beijing
