How to address scaling on the rotor of a circulating hydrogen compressor?
Thread Content
The rotor of the cyclic hydrogen compressor in the diesel hydroprocessing unit is severely fouled, with a layer of black deposits on its surface; analysis shows that gums account for about 50% of these deposits, and they can be removed using high-pressure water. How can this problem be completely resolved from a process perspective?
1. Is this the first time the rotor of the circulating hydrogen compressor has been opened? If it is the first time and this situation occurs, with black sludge and rust deposits also present in the inlet filter, it is possible that thorough purging was not carried out during the initial startup； 2. Check the liquid separation tank at the recycle hydrogen inlet to see if it is very dirty or contains lean amine liquid ； 3. Whether corrosion has occurred in the circulating hydrogen desulfurization tower, and whether the circulating hydrogen is sent to the downstream system ； 4. Check whether the cyclic hydrogen compressor is vibrating; the pipelines are generally made of carbon steel starting from after the high-pressure heat exchanger, and rust on these pipelines can spread along the pipeline as the compressor experiences surging or vibration.