Issues with the commissioning of heat exchangers
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Dear colleagues, we have a nitrogen heat exchanger in our factory that needs to be calibrated. Is it possible to first test it with steam without introducing nitrogen (since nitrogen flows through the shell side)?
If nitrogen is used in the shell side, what medium is used in the tube side? If it is a flammable or explosive gas medium, it is recommended to purge it with nitrogen. If the heat exchanger you purchase is one of those popular models with two and a half ports, it can be very dangerous. Therefore, chemical plants advise against taking chances with people’s lives; equipment should be adjusted in accordance with safety procedures. Safety first, safety first, safety first – an important point worth repeating three times.
Are you referring to the heat exchanger for cooling nitrogen? It’s for a pressure test, right? Why not use compressed air for the testing?
The tube train uses 50-kilogram steam.
What medium flows in the shell side, and what medium flows in the tube side? What’s the temperature?
Yes, the manager can preheat it via a bypass first
As required, nitrogen should be introduced first followed by steam; when shutting down, steam should be stopped first and then nitrogen
According to the regulations, the cold medium should be filled first, followed by the hot medium. Prevent localized heating of the heat exchanger, which could cause stress
It is crucial to consider whether the medium used during equipment pressure testing can cause damage to the equipment; it is best to use a gas medium for heat exchangers.