Activated alumina adsorbent is a commonly used adsorbent with a wide range of applications in the industrial field. However, chalking in the dryer is sometimes found, which adversely affects production. This article will explain the reasons for the pulverization of activated alumina adsorbents in the dryer.
First of all, the preparation method of activated alumina adsorbent has an important influence on its pulverization. Generally, activated alumina adsorbents are prepared by using aluminum sulfate and alum as raw materials through precipitation, aging, washing, drying and other processes. Among them, factors such as precipitation temperature, aging time, and washing water consumption will affect the quality and performance of adsorbents. If the preparation process is abnormal, such as the precipitation temperature is too high or too low, the aging time is insufficient or too long, etc., it will lead to the instability of the structure and properties of the adsorbent, which makes it easy to pulverize in the dryer.
Secondly, the design and operating conditions of the dryer will also affect the pulverization of the activated alumina adsorbent. For example, factors such as the hot air temperature of the dryer, the residence time of the material in the dryer, and the feed rate can all affect the performance of the adsorbent. If these factors are not properly controlled, the adsorbent will be subjected to excessive thermal and mechanical forces in the dryer, resulting in structural damage and pulverization. In addition, when the wear-resistant materials inside the dryer are used improperly or are severely worn, the pulverization of the adsorbent will also be exacerbated.
In addition, the quality and performance of the activated alumina adsorbent itself is also an important factor affecting its pulverization. Some low-quality adsorbents may have problems such as undense structure and low mechanical strength, making them easy to pulverize in the dryer. At the same time, different types of activated alumina adsorbents have different performance characteristics and application ranges, and improper selection of adsorbent types may also lead to pulverization in the dryer.
In summary, the reasons for the pulverization of activated alumina adsorbents in dryers mainly include the preparation process, dryer design and operating conditions, as well as the quality and performance of the adsorbent itself. To solve this problem, the following measures can be taken:
1.Optimize the preparation process of adsorbents to improve their quality and performance. By strictly controlling the temperature, time and other factors in the preparation process, adjusting the ratio of raw materials and adding an appropriate amount of modifier, the structural stability and mechanical strength of the adsorbent can be improved, and the risk of pulverization in the dryer can be reduced.
2.Reasonable design of dryer structure and operating parameters. According to the characteristics of the activated alumina adsorbent, the appropriate parameters such as hot air temperature, material residence time and feed speed are selected to avoid the pulverization phenomenon caused by excessive thermal and mechanical forces. At the same time, the wear-resistant materials inside the dryer are maintained and replaced to ensure its normal operation.
3.High-quality activated alumina adsorbents are selected. When purchasing activated alumina adsorbents, you should choose a first-class supplier with brand protection and product quality certification, and use and maintain it in strict accordance with the operation methods on the instruction manual. At the same time, it is necessary to pay attention to observe and record the performance of the adsorbent during use, and take timely measures to solve the problems.
4.Strengthen quality control and management in the production process. Establish a sound production quality control system, and carry out strict supervision and testing of each production link to ensure that the product quality meets the requirements. At the same time, strengthen the management of the production site, improve the quality and skill level of employees, and ensure the smooth progress of the production process.
In short, to solve the problem of pulverization of activated alumina adsorbents in dryers, it is necessary to start from many aspects, including optimizing the preparation process, rationally designing the structure and operating parameters of the dryer, selecting high-quality adsorbents, and strengthening production quality control and management. Only by comprehensively improving product quality and production efficiency can we better meet market demand and improve the competitiveness of enterprises.
The article is on the official website of Shandong Kaiou Chemical Science and Technology.