Is the increased pressure drop in the catalytic fractionation tower due to salt deposition?
Thread Content
The pressure drop in the catalytic fractionation tower increased from 40 kPa to 50 kPa; operation remained relatively stable, the processing volume stayed unchanged, the temperatures at various stages were basically normal. The temperature at which diesel was extracted decreased slightly, and the yield of crude gasoline at the top of the tower was low. The quality of the product was not affected. Is there a high possibility of salt formation?
If salt formation occurs, it is difficult to control the dry point of crude gasoline even when the temperature is normal. Your \"product quality has not been affected\" – at least not significantly
Is there any issue with the extraction by the top circulation pump? Salt accumulation at the top of the tower can also cause fluctuations in the operation of the top circulation pump.
Could it be that the high pressure drop is caused by the pulverization of the catalyst?
With the decrease in crude steam production, how has your diesel production changed? What changes have occurred in diesel quality?
Check if the liquid level at the bottom fluctuates significantly, and also see if there is a problem with your top pump and if the flow rate has changed. The main issue is likely the pulverization of the catalyst, along with poor gas flow that results in a high pressure difference.