A vapor stripping tower, with a sieve plate at the top and a bubble cap at the bottom – what is this situation?
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What is the general principle behind this situation, and is it widely used in factories?
This situation can be considered as a design approach by the creator. There are various options for plate towers, each with its own characteristics. Strainer plate towers are divided into those with overflow and those without overflow. In addition to differences in tray efficiency, there are also variations in the allowable space velocity. Materials containing impurities present a clogging issue as well; some are prone to clogging while others are not... In short, do it depending on the circumstances.
In other words, can a tower contain different types of trays?
It is possible, especially when there are significant differences in the space velocities of the stripping section and the distillation section, the required number of trays, or the properties of the material (such as tendency to clog). In such cases, it is entirely appropriate to make such a choice. But overall, this is possible, though it’s not common, as the structure is different and processing is relatively difficult.
We also have a tower, with a random-packed filler in the upper section and a bubble tray in the lower section.
I’ve seen mixtures of packing and trays, but I’ve never seen mixtures of trays of different types
Yes, there are cases where fillers and trays are used together. All of these are to meet specific requirements. If one comes into contact with the specific designers or designs the towers themselves, gaining a thorough understanding of the characteristics of various types of towers as well as being familiar with the requirements for material separation (including absorption towers), one will be able to apply these knowledge skills more effortlessly and gain a deeper insight as well.