Regarding the issue of rich liquid regeneration
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The control of the solvent regeneration tower is normal; there are no issues with the reflux rate and temperature at the top of the tower. As required, the bottom temperature should be around 122°C, while the top temperature should be between 100–110°C. In the past, our operations were fine, but recently, for some reason, once the bottom temperature reaches 118°C, the top temperature rises above 110°C. This results in the acidic gas entering the furnace having a very high temperature and containing a lot of moisture. If the temperature isn’t increased, the hydrogen sulfide levels won’t meet the required standards. Ask which big brother knows the reason, thank you! ! !
Adjust the solution concentration and check whether the trays have collapsed.
The issue is with the concentration of the amine solution; perhaps the amine solution has deteriorated, so it needs to be replaced
There’s no issue with the reflux ratio; it’s possible that the concentration of the amine solution is too low. Thank you all for your advice!
As long as the top temperature of the tower is well controlled, the quality of the lean liquid can basically be ensured. There is also no definite relationship between the bottom temperature of the tower and the bottom pressure.
Can’t the top condenser cool down?