As a widely used experimental equipment in many fields, the control of water and oxygen content inside the glove box is crucial. When the water and oxygen content in the glove box remains high after regeneration, it not only affects the accuracy and success rate of the experiment, but may also cause damage to the experimental materials and products. Let's take a look at how to deal with the high water and oxygen content in the glove box after regeneration.
Analysis of the reasons for the high water and oxygen content in the glove box after regeneration：
Incomplete regeneration:
Despite the regeneration operation, the adsorbent may not have been fully regenerated due to equipment failure, program errors, or human negligence. For example, if the heating element is not working properly, causing the adsorbent to fail to reach the temperature required for regeneration locally; Or due to program errors or improper operation, the regeneration time may be unexpectedly shortened, resulting in incomplete removal of water and oxygen molecules deeply adsorbed by the adsorbent.
If there is no regeneration for too long, a large amount of impurities may accumulate in the glove box purification system. These impurities have not been completely eliminated after one regeneration and will continue to affect the adsorption performance of the adsorbent. Even after one regeneration of the adsorbent material, it is difficult to effectively remove water and oxygen molecules, resulting in a high water and oxygen content.
External factors influence
The environment where the glove box is located has a high humidity, and the moisture in the surrounding air will continuously penetrate into the glove box through the small gaps in the box. Similarly, high temperature environments can cause changes in the pressure difference between the gas inside and outside the glove box, making it easier for external gases to enter the glove box, thereby increasing the water and oxygen content. Moreover, high temperatures may also affect the performance of adsorbents, leading to a decrease in their adsorption capacity.
Equipment components damaged
If the sensor used to detect water and oxygen content in the glove box malfunctions, it may give incorrect readings. Even though the actual water oxygen content has decreased, the displayed value is still high due to sensor misjudgment.
The gas circulation system is responsible for continuously circulating the gas inside the glove box through the purification system for processing. If the components such as fans and valves in the circulation system malfunction, it will lead to poor gas circulation and reduced purification efficiency.
Solution to high water and oxygen content after glove box regeneration：
Check and repair sealing issues
An oxygen-containing method can be used to perform a sealing test on the box to check if there is any damage to the sealing of the glove box. Check the sealing gaskets between the various components of the box, and replace any damaged or aged gaskets. At the same time, check whether the sealing surface of the glove box is flat. If there are scratches or deformations, they should be repaired or polished to ensure the sealing performance of the glove box.
Secondary regeneration
If the water oxygen value is high but lower than the value before regeneration after a glove box regeneration, there may be incomplete regeneration, and it is recommended to perform a second regeneration.
Optimize gas purification system
If the adsorbent has been used for a long time and has undergone multiple regenerations, it should be replaced with a new adsorbent in a timely manner. The regeneration process can be monitored, such as by detecting the water and oxygen content at the outlet of the regeneration gas to determine the regeneration effect.
Regularly inspect the purification column and purification materials to see if there are any lumps in the purification materials, if there are any dents, deformations, rust, or damage in the purification column, and replace the adsorption materials and purification column in a timely manner.
Eliminate external interference factors
Place the glove box in an environment with relatively stable humidity and temperature, and use equipment such as air conditioning and dehumidifiers to adjust the humidity and temperature of the glove box usage environment.
Inspect and repair equipment components
Regularly inspect and calibrate the water and oxygen sensors inside the glove box to ensure their measurement accuracy. If the sensor is damaged, it should be replaced with a new one in a timely manner and installed and debugged according to the equipment manual.
Regularly maintain and inspect components such as fans and valves in the gas circulation system. Check whether the pipeline connections of the gas circulation system are firm, loose or leaking.
The high water and oxygen content in glove boxes can cause inaccurate experimental data and affect the performance of experimental materials. Therefore, it is important to pay attention to the high water and oxygen content after glove box regeneration. If the above methods cannot solve the problem of high water and oxygen content after regeneration, it is recommended to directly contact the glove box supplier for technical guidance or on-site maintenance.
