Is it necessary to close the inlet and outlet valves of the compressor to relieve pressure in the event of an emergency shutdown?
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The first-stage seal of the compressor is equipped with a booster pump; is it necessary to switch the process gas to nitrogen in the event of an emergency shutdown? Is it necessary to release the gas from the compressor?
Your question is too general; there are many different types of compressors, with the common ones being centrifugal and positive-displacement types. Positive-displacement types: split-piston, gear, screw, etc. I’m not sure what your device looks like, or what the requirements are regarding the connection between the process and the device. It’s best to describe it clearly for easy discussion.
This is required provided that the nitrogen pressure and the sealing gas pressure are similar
It’s necessary; where did the air from the booster pump go? It can’t be started like this again – when the pressure levels out, the seals get damaged
Is the medium pressure higher than the sealing gas pressure?