What is the function of trays in a distillation column?

What is the function of trays in a distillation column?

Column trays The trays have openings to allow vapor to flow upward through the column, as well as conduits (downcomers) to allow condensed liquid to flow downward (Figure). The tray is designed to promote intimate contact between the upward-moving vapor and downward-moving liquid.

How do we use tray?

There are different uses for serving trays including carrying food and beverages from one place to another as well as enabling those in the industry to serve specific sized portions of food. Some serving trays are used to hold plates and drinks, while other restaurants choose the tray to serve food on.

What is tray in distillation column?

Trays are separation devices used in process plants, most often in distillation towers. The tray column is one the most widely used types of distillation columns. The number of trays and stages in the column is designed for the desired purity and difficulty of the separation process.

What is baffle tray?

Baffle, disc-and-donut and showerdeck trays Ascending vapour contacts the liquid by passing through the liquid curtains. These trays are used in washing sections where fouling resistance has priority over high efficiency.

What is Valve tray?

A valve tray is a flat perforated plate, with each perforation fitted with a movable disk (the “valve”). The valves will move up or down in response to changing vapour flow rates.

Why tray is important?

Makes serving easier- One of the most basic reasons for tray being so important is the serving reasons. A tray makes serving food and drinks easier. Without a tray, it will cost you immense physical effort to serve anything to your guests in a family gathering.

What are the types of tray?

• Fast Food Serving Trays.
• Serving Trays with Compartments.
• Appetizer Serving Trays.
• Tea Serving Trays.
• Plastic Serving Trays.
• Wooden Serving Trays.
• Metal Serving Trays.
• Fiberglass Serving Trays.

How does a distillation tray work?

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. In essence, the hot mixture is pumped into the bottom.

What is valve tray?

How many types of trays are there?

The liquid overflows the weir into the tray below, its flow path being guided by the downcomer. Click here for more information on tray components. We will discuss the operating principles of 3 common types of trays: sieve, valve and bubble-cap. Other Tray Types Many other types of trays are available.

What is chimney tray?

The chimney tray, or collector tray as it is often called, is designed to collect liquid for one of two reasons: 1. to draw-off a product or pumparound stream or; 2. At the same time that a chimney tray is collecting liquid, it must be designed to provide good vapor distribution to trayed and packed sections above it.

What is tray service?

TRAY SERVICE It is a style of service that does not make use of the usual dining table but instead dishes and table appointments are arranged in trays, which are brought to the diner. This is the style used in serving patients in hospitals or sending meals for room service.

What are the functions of a tray column?

Tray columns are widely used in various types of mass transfer operations. All the simulation results, which predict a certain number of theoretical stages, can be converted to actual trays depending upon tray efficiency for a particular service. Basic functioning of a tray/plate is mass transfer.

What is the purpose of a cafeteria tray?

A cafeteria tray is used for carrying items in a cafeteria. It is typically made of plastic or fiberglass. A compartment tray or mess tray is a cafeteria tray designed to be used directly, without dishes – it incorporates shallow compartments in which different types of food are placed. A cargo tray, the rear of a ute, used to hold goods.

What kind of materials are used to make a tray?

A tray is a shallow platform designed for the carrying of items. It can be fashioned from numerous materials, including silver, brass, sheet iron, paperboard, wood, melamine, and molded pulp.

What kind of trays are used in a hotel?

Trays range in cost from inexpensive molded pulp trays which are disposable and inexpensive melamine trays used in cafeterias, to mid-priced wooden trays used in a home, to expensive silver trays used in luxury hotels. Some examples have raised galleries, handles, and short feet for support.