The purification effect of the molecular sieve purification system affects the operating cycle of the device. Improper operation of the same equipment may also affect the purification effect. The following issues should be noted during operation:
1) Installation requirements for molecular sieve adsorbers: carefully check whether the upper and lower sieve screens are damaged and whether they are firmly fixed; Whether the molecular sieve is fully filled and leveled; Carefully seal the inner and outer cylinder manholes to prevent mutual gas leakage;
2) When the molecular sieve adsorber is running, it is necessary to regularly monitor the temperature curve of the molecular sieve and the carbon dioxide content at the outlet to determine whether the adsorber is working properly;
3) Closely monitor the switching program of the adsorber and whether the switching pressure difference is normal. If there is a malfunction, it should be dealt with promptly;
4) Pay close attention to the normal operation of the refrigerator. If a short-term malfunction causes an increase in air outlet temperature, the switching cycle of the adsorber should be shortened in a timely manner and the malfunction should be eliminated in a timely manner;
5) When starting and boosting the air compressor, it should be done slowly to prevent excessive air velocity. When inflating the low-temperature system or increasing the system load (starting the expander, opening the throttle valve, etc.), it should be done slowly to prevent system pressure fluctuations;
6) When the air separation equipment is stopped, the main air valve behind the adsorber should be immediately closed to prevent excessive airflow velocity from impacting the molecular sieve bed layer during restart.
