Airtightness issues in the hydrogen-related systems of hydrogenation units
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I would like to ask whether it is feasible to use low-pressure nitrogen instead of high-pressure nitrogen for checking the gas tightness of the hydrogen-handling systems in hydrogenation units
It depends on the operating pressure of your unit; if it is for high-pressure hydrogenation, low-nitrogen alternatives cannot be used
A low nitrogen level can be used; compressing it with a press to the specified pressure will ensure airtightness
Based on the pressure level you are aiming for, if low-pressure nitrogen is suitable, you can directly use nitrogen for sealing; when a higher pressure level is required, then a booster pump needs to be considered. However, you need to check whether such operating conditions are suitable for the compressor, in order to avoid compressor failure due to excessively low inlet pressure
Use a booster pump to compress the gas to the specified pressure in order to ensure airtightness, but be sure to consider that the booster pump is capable of pushing nitrogen to that specified pressure, so as to prevent damage to the pump!