1. Whether there is air leakage in the system, including internal leakage and external leakage.
2. Whether molecular sieves are suitable to ensure good separation of oxygen and nitrogen.
3. Whether the time control of each link in the PSA process is reasonable to avoid mutual mixing.
4. In order to obtain high purity nitrogen, appropriate amount of hydrogen and trace oxygen in nitrogen should be added for catalytic reaction deoxidization, and then cooled by water condenser, dehydrated by steam water separator, and then deeply dried by dryer. Two adsorption drying towers are used alternately, one for adsorption drying and the other for heating, desorption and drainage, so as to obtain high purity nitrogen.
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