Are the absorption tower and desorption tower in a catalytic cracking unit distillation towers?
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Are the absorption tower and desorption tower in a catalytic cracking unit distillation towers?
None of them are distillation columns; a stabilizer column, on the other hand, is a typical distillation column. The characteristic of a distillation column is that it must have a distillation section and a stripping section, and the reboiler at the bottom of the column as well as the reflux at the top represent two theoretical plates.
No! If we really have to calculate it, it can only be counted as half
No, a stabilization tower is a standard distillation tower with feed at the middle, cold reflux at the top, a reboiler at the bottom, an upper distillation section, and a lower retention section
I think so; there are a feed section, a retention section, and a distillation section
Neither. A distillation column is a device in which vaporization and condensation occur on each tray; the heavier components in the gas phase are condensed, while the lighter components in the liquid phase are vaporized. Each tray represents one instance of flashing. The absorption tower is used only to absorb the heavier components in the gas phase; the trays inside it are simply there to distribute the liquid phase and provide a surface for gas-liquid contact. The stripping tower is responsible for the light components in the evaporated liquid phase, thereby controlling the initial boiling point of the oil product.
Agree with the opinion on floor 6. Take a look at the textbook on principles of chemical engineering – the elements of distillation.
The 6# Bwin stable tower has a feed section, a stripping section, and a distillation section. It is a typical distillation tower.
Yes, once you look at the necessary conditions for distillation, it becomes clear at a glance
The catalytic cracking stripping column, also known as the deethanizer, mostly uses double-floating valve trays, and a reboiler is installed at the bottom of the column. In terms of its operational characteristics, it functions essentially as the stripping section of a distillation column.
For absorption towers and desorption towers, the basic principle is that at any tray within the tower, material balance, heat balance, and phase balance hold true for each component. Therefore, from the perspective of vapor-liquid equilibrium, there is no difference between absorption/desorption towers and distillation towers.