What is plate distillation column?
What is plate distillation column?
The distillation column is made up of a series of stacked plates. A liquid feed containing the mixture of two or more liquids enters the column at one or more points. The liquid flows over the plates, and vapor bubbles up through the liquid via holes in the plates.
What are the different types of plates used in distillation column?
There are five major types of tray column; bubble cap tray, sieve deck tray, dual flow tray, valve tray and baffle tray.
What is use of plate columns?
A plate column (or tray column) is a chemical equipment used to carry out unit operations where it is necessary to transfer mass between a liquid phase and a gas phase. In other words, it is a particular gas-liquid contactor. In general, plate columns are suitable for both continuous and batch operations.
How does a plate extraction column operate?
Inside of the column are trays or plates. These trays force the liquid to flow back and forth horizontally while the vapor bubbles up through holes in the trays. The purpose of these trays is to increase the amount of contact area between the liquid and vapor phases.
How is a distillation column heated?
Many distillation columns are heated by steam reboilers. Typically the process materials are on the tube side of the exchanger with the steam being on the shell side, as shown in Fig. 19.3.
Why do we use packed column?
In industry, a packed column is a type of packed bed used to perform separation processes, such as absorption, stripping, and distillation. A packed column is a pressure vessel that has a packed section.
What is extraction column?
Mass transfer apparatus in which the dispersion of immiscible liquids occurs during mechanical mixing or by passing through perforated plates under applied pulsation. Columns can be used to work with liquids containing insoluble residue.
What material are distillation columns made of?
Distillation Column Materials include: Titanium. Titanium clad Steel. Zirconium.
What are the different parts of a distillation column?
A typical distillation column consists of several major parts: A vertical shell where separation of the components is carried out. Column internals such as trays, or plates, or packings that are used to enhance component separation.
What type of plate contactor is used in distillation columns?
The most popular type of plate contactor in distillation (and absorption) columns are cross-flow plates as depicted in the image below where the liquid flows in downcomers in the intervals between plates. Figure 1: Example of a cross-section of a distillation column that depicts cross-flow (Hebert & Sandford, 2016)
What are distillations plates and how do they work?
Distillations plates, also called trays, allow for an amount of liquid holdup. This is to allow the vapour flow to encounter the liquid and allows for vapour-liquid mass transfer which is necessary for separation to occur.
What is a feed tray in a distillation column?
In a crude oil distillation unit the feedstock liquid mixture is introduced usually near the middle of the column to a tray known as the feed tray. The feed tray divides the column into a top (enriching, rectification) section and a bottom (stripping) section.
