To determine whether the heating regeneration of molecular sieves in air separation equipment is thorough, comprehensive consideration can be made from the following aspects:
Firstly, it is necessary to ensure that the gas pressure, flow rate, and other conditions required for heating the molecular sieve meet the requirements of the process design. This is the foundation for the smooth progress of the heating regeneration process. If the heating conditions are insufficient, such as insufficient gas pressure or insufficient flow rate, it will directly affect the regeneration effect of the molecular sieve.
The peak temperature of cold blowing is an important indicator for determining whether the regeneration of molecular sieves is complete. Usually, the peak temperature of cold blowing needs to reach a certain standard in order to consider regeneration thorough. This standard can be determined based on actual operational experience and process design requirements. In the cold blowing stage, the main focus is on monitoring the peak temperature at the outlet. If the temperature at that location meets the requirements, it indicates that the internal regeneration has been completed.
During the heating process, it is necessary to ensure that the flow rate and time of regenerated gas meet the process requirements. Sufficient regeneration gas flow rate and time can ensure that the molecular sieve can be fully decomposed, desorbed, and regenerated. If the gas flow rate is insufficient or the time is not enough, it will affect the regeneration effect of the molecular sieve.
In addition to directly observing the peak temperature of cold blowing, it is also possible to indirectly determine whether the regeneration of the molecular sieve is complete by observing its performance during the working cycle.
