Solvent regeneration tower with bottom sump
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Dear teachers, our ethanolamine solvent regeneration tower adopts a double overflow form. There are two liquid collecting tanks at the bottom of the tower, and the two liquid collecting tanks each have their own reboilers, which are pumped out from the liquid collecting tank and returned to the bottom of the tower. 1. I have never quite understood the structure of the liquid collection tank at the bottom of the tower and the bottom part of the tower. Can any teacher share pictures or describe it? 2. What is the relationship between the liquid level in the liquid collecting tank and the liquid level at the bottom of the tower? 3. What is the principle behind pumping out liquid from the collecting tank and returning it to the bottom of the tower through the reboiler?
It would be best if you can send a schematic diagram.
Send your pictures. If you just say you have a stomachache, can the doctor diagnose you remotely?
This is a previous post with replies: You can search on Soso: The oil collection tank is equivalent to a small function of collecting and redistributing... There are small holes on the first layer of the distribution plate... There are high air rise holes... This is usually located at the position where the side is extracted first... You need to calculate the height of the air rise holes... You need to calculate the size and arrangement of the hole diameters... In order to ensure the residence time... and the production volume... You also need to calculate the production volume based on the diameter of the extraction port... Keep a certain liquid level... The principle is that the liquid from top to bottom stays on this plate...for easy extraction...but the gas phase from bottom to top moves forward through the air riser hole... Generally speaking, the oil collecting tank also indicates that it is fully pumped out...so the distribution plate will not have sieve holes...because I saw that you have a feed pipe under the oil collecting tank...but it does not rule out the phenomenon of pumping out.…
Just because there is no picture, I want to know the structure.
If you have a picture, I'll just look at it. I won't ask you what the structure is.
There should be a schematic diagram, right? Just the one on the flow chart.
Can you see the flow chart? It is very abstract and requires equipment drawings or construction drawings, but these drawings cannot be found.
It can only be expressed from the flow chart. As an operator, you can understand the principle by looking at the process.
1. The liquid level in the liquid collecting tank is the liquid phase of the reboiler, and the liquid level at the bottom of the tower is the shell-side overflow liquid phase of the reboiler and the gas phase of the reboiler. The former also carries most of the hydrogen sulfide, while the content of the latter is relatively low. 2. This is the siphon principle of the reboiler. Personal opinion.