Dirt problems in hydrogen-nitrogen compressors
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Dear experts, the hydrogen-nitrogen compressor has been in use for only 2 days, but there is dirt in the form of sand particles on its third and fourth stages. What could be the cause, and how can this be resolved?
Where was it found at level 3 or 4? Was it discovered after parking? Was the grinding sand not cleaned properly during installation?
Check whether the oil injection volume in sections 3 and 4 is too high, and whether the temperatures in those sections are too high.
This post was last edited by ZZJJAA70 on 2010-1-27 at 07:41. For compression ratios of three to four, piston rings made of PTFE material are generally used; when such piston rings break, they turn into black granular substances that resemble synthetic catalysts. A closer inspection should reveal this
It is likely debris resulting from severe wear of the piston rings or piston against the cylinder.
The poster should check whether the previous crankcase wasn’t cleaned properly, as there may be residues from casting in the corners, which can lead to the presence of sand and similar substances
If it is a newly installed hydrogen-nitrogen compressor, there is a high possibility that the pipelines were not thoroughly purged； The dirt resulting from high oil injection volumes and high oil temperatures is dark black in color and appears as solid particles that mostly adhere to valves and similar components; it is not in granular form ；
Was purging done before putting it into use? The sand may have been brought into the pipes during piping.