Sage-Tips

What is the use of stripping column?

Stripping columns are used to remove volatiles from water such as volatile hydrocarbons (e.g., benzene, toluene and xylene), volatile chlorinated hydrocarbons (e.g., per and tri) from water. The Logisticon stripping columns are made of the so-called countercurrent principle.

Why steam is used in distillation column?

Steam injection allows hydrocarbons to evaporate at temperatures lower than their boiling points5. Using of superheated steam or neutral gas prevents decomposition of insufficient heat-resistant compounds because of reducing separation temperature of hydrocarbon mixtures6,7.

How does steam stripping work?

Understanding Steam Stripping The steam rises in the column and flows upward, countercurrent to the water. Often packing, trays or other materials are placed in the column to increase the surface contact between the steam and water, resulting in greater contaminant removal.

What is striping section?

The section in a distillation column located below the feed point, in which the less volatile component or components in the mixture undergoing separation increase in concentration towards the bottom of the column as the more volatile component or components are stripped out.

What is stripping and why done it?

Stripping is a technique for removing volatile components in a mixture by bubbling a stream of a chemically unreactive gas through the sample.

What is steam distillation how is it done?

Steam distillation is carried out by passing dry steam through the plant material whereby the steam volatile compounds are volatilized, condensed and collected in receivers. Distillation is carried out with low pressure steam which replaces the volatile compounds from the intact plant material.

What is the advantage of steam distillation?

The advantage of steam distillation over simple distillation is that the lower boiling point reduces decomposition of temperature-sensitive compounds. Steam distillation is useful for the purification of organic compounds, although vacuum distillation is more common. When organics are distilled, the vapor is condensed.

What is rectification and stripping in distillation?

At the rectifying section, the more volatile component is removed through contacting the rising vapour with the down-flowing liquid. At the stripping section, the down-flowing liquid is stripped of the more volatile component by the rising vapour. The distillation can be equipped with trays or packings or both.

How does stripping steam reduce partial pressure?

The steam dilutes the hydrocarbons in the vapor phase of each stripper stage, reducing thus their partial pressure. The reduction of the partial pressure causes more hydrocar- bons to evaporate. The light tails evaporate selectively, because of their lower boiling points.

What mean by stripping?

verb (used with object), stripped or (Archaic) stript, strip·ping. to deprive of covering: to strip a fruit of its rind. to deprive of clothing; make bare or naked. to take away or remove: to strip sheets from the bed.

What is a strip column used for?

Stripping columns are used to remove unwanted materials from process streams. The air stripping column shown below is used to remove ammonia from water and wastewater feedstreams. In a typical steam stripping column, the liquid feed is introduced at the top of the column and the steam input is located at the bottom.

What is steam distillation and how does it work?

Steam Distillation is a separation process for temperature sensitive substances. It is a particular type of distillation. Another way round it is a method for separating miscible liquid base depending upon their volatilities. For instance aromatic compounds.

What happens to the liquid when it enters the steam column?

When the liquid enters the column, it flows down the column and through the packing countercurrent to the steam. The packing enhances the stripping by increasing the amount of contact between the two streams. After leaving the column, the vapor is either distributed into the atmosphere or is collected for purification.

How does a steam strip machine work?

• As you clearly imagine from figure, you introduces fluid to the stripper, it moves downside and within the packing counterflowing to the steam means opposite to its flow. • The packing inside the column, which is the heart of it, advances the stripping process by extending contact period and the quantity of both streams.