Pressure fluctuations in the regeneration tower
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Yesterday, too much water was added during regeneration; there were 4 extra liquid levels in the solvent tank. Now, we add water by using underground solvent tanks to feed it into the flash tank. Once water is added, the regeneration process becomes unstable, with very large fluctuations in pressure at both the top and bottom of the tower. I wonder if it’s because the addition of water caused a change in the feed concentration in the regeneration tower, resulting in more steam generation and thus those pressure fluctuations
It must be caused by fluctuations in steam pressure.
It’s probably a problem with the water addition; it’s just fluctuations in the pressure in the flash filling system
I checked the single-point trend of the steam, and nothing seemed wrong there. However, the pressures at the top and bottom of the tower, as well as in the acidic gas separation tank, are fluctuating greatly; it’s becoming difficult to control the liquid level
What is the purpose of adding water to the regeneration tower? Is it to dilute the concentration of ethanolamine?
Yes, we added 10 barrels of solvent
We add water at the outlet of the solvent tank
Won’t this affect the absorption of the amine solution?
Is it because the solvent hasn’t mixed thoroughly with water?
If water is added slowly, there should be no problem. Could it be that the liquid level in the regeneration tower is at its maximum at that moment? If fluctuations persist even after stopping the addition of water, it’s best to reduce the amount of steam supplied, thereby breaking the vapor-liquid equilibrium, and then gradually increase the steam supply again