Category: Gas Processing

Bubble Cap and Packing Distillation Tower

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In trays and bubble cap distillation tower the holes in each tray are covered with caps called bubble caps. The slots in these bubble caps disperse the raising vapor through the liquid on the tray. Each bubble cap has many slots and each tray has many bubble caps to spread up the vapor. This ensures …

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Reboiler in Distillation Column

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Reboiler in Distillation Column

Another method uses to increase the purity of the product is called re-boiling. The bottom liquid that is drawn off of the tower is sent to a heater called re-boiler. The rest of bottom liquid is sent to storage or other unit in the plant as the tower bottom products. The re-boiler heats the liquid …

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Reflux in Distillation

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Reflux in Distillation

If the distillation tower works perfectly, it would produce a pure product but unfortunately the lighter products usually contain some heavier fraction while the heavier products contain some lighter fraction, this chase is sometimes referred to as overlap. Distillation system uses several methods to maximize the purity of the products and one of these methods …

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Distillation Tower Sections

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Distillation Tower Sections

Every distillation tower can be divided into three different sections. The middle section is where the feed enters the tower and part of the feed vaporized. This vaporization is commonly known as flashing, so this section of this tower is often called the flash zone. The section above the flash zone is the rectification section. …

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Fractional Distillation Tower

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Fractional Distillation Tower

One of the key elements of many process plants is a distillation system. It’s important for operator to understand how distillation system works because its parts of their job to make sure the system is run properly. The purpose of any distillation system is to separate a liquid mixture into two or more components. The …

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Reflux System in the Amine Plant

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Reflux is a process where a fluid is removed from a vessel, condensed and returned to the vessel to enhance the process. The reflux system consists of reflux condenser, accumulator and pump. Overhead vapor from the stripper mainly consisting of water vapor and acid gases passed through the reflux condenser which condenses most of the …

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Carryover in the Amine Plant

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There is usually space in overhead system for separation, where most of the entrained amine solution particle in the vapor stream will settle out. Amine solution not settling out will be removed by mist eliminator. This prevents liquid amine from being carried out of the stripper and in to the overhead vapor line. Carryover in …

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Gas Dehydration Methods

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Before gas can be sold the gas need to be dehydrated from its water content. This efforts need to be done to prevents hydrates and water vapor. The water vapor in gas line could create corrosion problems. There are many methods to dry the gas: 1. Cool the gas until it forms the hydrate formation …

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Moody Friction Factor

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Moody Friction Factor

The factor of proportionality in the previous equations is called the  Moody friction factor and is determined from the Moody resistance diagram shown in Figure 8-1. The friction factor is sometimes expressed in terms of the Fanning friction factor, which is one-fourth of the Moody friction factor. In some references the Moody friction factor is …

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