The gas purification column of the vacuum glove box is filled with H2O and oxygen adsorption materials, the adsorption capacity of this new material, the fastest adsorption rate. With the increase in the quality of the adsorption impurity, the adsorption rate of the adsorbent will gradually decrease, thereby gradually increase the H2O and oxygen concentration in the glove box.
In addition, if a small amount of oxygen is introduced during the operation, the H2O, oxygen concentration is increased, it takes a long time to return to the level before the operation. The purification column needs to be regenerated when an oxygen concentration or an oxygen concentration reaches an unacceptable recovery time.
1) The adsorption capacity of the purified column, that is, when the adsorption of the absorbent column reaches a certain amount, its purification capacity can no longer maintain an oxygen concentration within the desired range or the recovery rate of the oxygen concentration cannot meet the requirements. The adsorption capacity of the tank purification column is usually 20 ≤ 60 liters O2.
2) The amount of impurities introduced in the leakage rate and operation of the glove box.
3) Introducing a small amount of oxygen into the glove box, but as long as the operation procedure does not have a serious misoperation, it is very limited, and the amount of H2O and oxygen introduced within one year will not exceed the purified columndsorption capacity.
It can be seen that as long as the operation rules of the glove box are observed, the main channels of impurities into the glove box are leaking through the glove box and gloves. Therefore, the leakage rate of the glove box determines the regenerative interval, usually between one month to one year.
