Structural problems of the tower
Thread Content
Why are some towers thinner at the top and thicker at the bottom, and why does the space at the top of some towers suddenly become larger? For example, in a coking stabilizer, the distillation section is finer than the stripping section!
This post was last edited by ylb913 on 2016-6-18 06:08. The tower is narrower at the top and wider at the bottom, usually because there is a significant difference in the gas-liquid load; the load is higher at the bottom and lower at the top. In the thicker upper section of the tower, the gas-liquid load is generally the same throughout the entire tower. This thicker upper part contains no trays or packing (bubble breakers are not considered), and it serves as a settling zone for the gas phase at the top of the tower.
Is his goal to ensure material balance? Does it have some other meaning? Does entering the upper part of a narrower tower increase the upward speed of the weather phenomenon? Is the reflux at the top of the tower beneficial for meteoric distillation?
You have absolutely no knowledge of things like tower leakage, foam entrainment, and the liquid level line.
It’s mainly about controlling the gas-liquid phase equilibrium; go back and review the principles of chemical engineering.
These are the basic principles; in simple terms, the tower is meant to carry out the separation of components, and for this process to be successful, the gas and liquid phases must have a certain velocity and level of contact The gas phase generally enters in the middle to lower part of the tower, in relatively large quantities; as one moves upward, the concentration of gas-phase components gradually decreases. Therefore, to ensure a certain flow rate, reducing the diameter of the tower is a relatively economical approach! In some places, the equipment is designed with a narrower section at the bottom and a wider one at the top; this is because rapid reaction is required at the lower part, while a certain residence time is needed at the upper part for separation! Keep it up; by building a solid foundation, you’ll be able to learn anything faster in the future! The same principle applies to everything; it depends on how flexibly you use it!
It mainly depends on the gas-liquid phase load, so diameter changes usually occur near the feed or extraction port. But for simplicity, as long as the changes are minor, the same tower diameter is usually used for sampling.
Distillation may seem simple, but it’s not actually that way; I can only say that it depends on the specific circumstances!