1) Increase monitoring. In the transformation of the air separation unit, the horizontal spiral centrifuge added a temperature measurement point on the inlet and outlet pipes of each channel of each main heat exchanger plate unit.
2) Cleaning the main heat exchanger. The main heat exchanger is cleaned and the auxiliary heat exchanger unit is added at the same time.
3) Strengthen the management of maintenance site construction. Control the entire process that requires heat exchanger maintenance. Before loading and unloading the molecular sieve, the person in the center of the blind tube flange must be responsible, pay attention to supervision, and strictly implement the inspection and acceptance procedures of the heat exchanger. The quality is very good. To further improve the repair process after the processing steps. The process that may damage the heat exchanger and maintenance problems is fully evaluated, and corresponding emergency plans are developed to reduce the possibility of failure.
