Compressor replacement
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The compressors in the light hydrocarbon recovery unit fail the replacement tests time and again – what could be the reasons? Let’s discuss it together!
The valve cannot be fully closed; there are dead ends in the replacement process; the replacement time is insufficient; the measures taken are incomplete
The valve has leakage points, the number of replacement cycles is insufficient, and the purity of the replacement gas is not adequate.
There are dead corners; there are leakage points! Fewer replacement times!
Is it the air in the displacement system or the combustible gas within it that is displaced? The ends and low points must be drained completely. Performing pressure-driven replacement yields better results.
Replace with flammable gas. What is pressure-driven replacement? Experts, please advise
There must be dead corners; it took over ten days of replacement work as required before it was handed over. . .
Here, we carry out separate replacement for the first and second stages of the compressor; the first stage passed the test, but the second stage did not. It’s likely not a problem with the purity of the gas used for replacement
Pressurize the system with nitrogen; once the pressure reaches a certain level, shut it off. Then discharge several times from the ends, blind spots, etc., until the pressure drops to the lowest level. Test the combustible gas content again after several replacements.
It’s still because the dead corner hasn’t been fully replaced. It is recommended that the poster use nitrogen under certain pressure to carry out continuous displacement along the process for a period of time first, before increasing the pressure for further displacement.
It is a continuous displacement process~~One can use the method of pressurization – holding – depressurization, repeating this cycle of displacement~~