The molecular sieve purification system of the air separation equipment needs to pay attention to multiple aspects during operation to ensure the stable operation and efficient purification effect of the system.
Carefully inspect the upper and lower sieves for any damage and ensure they are securely fixed to prevent molecular sieve leakage or bed disorder. Ensure that the molecular sieve is filled and flattened to provide a uniform adsorption surface. Seal the inner and outer manholes to prevent mutual gas leakage and affect the adsorption effect.
Regularly monitor the temperature curve of the molecular sieve and the content of carbon dioxide at the outlet to determine the working status of the adsorber. Abnormal fluctuations in the temperature curve or an increase in carbon dioxide content may indicate saturation or failure of the adsorbent.
Closely monitor the switching program of the adsorber and whether the switching pressure difference is normal. The malfunction of program switching may cause the adsorber to malfunction, while abnormal switching pressure difference may indicate system leakage or blockage.
Pay close attention to the operating status of the freezer. 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 as soon as possible to prevent the molecular sieve from overheating and the adsorption efficiency from decreasing.
When starting the air compressor, the pressure should be slowly increased to prevent excessive air flow from impacting the molecular sieve bed. Similarly, when inflating the low-temperature system or increasing the system load, it should be done slowly to avoid excessive pressure fluctuations in the system. Temperature control to prevent water from entering the molecular sieve.
