Essential Equipment for Distillation: A Complete Guide

Essential Equipment for Distillation: A Complete Guide

Distillation is the process of separating chemical components in a boiling liquid mixture based on changes in volatility of the components. Distillation is often referred to as a unit operation because it is typically performed as part of a larger chemical process. ACE is a supplier of distillation equipment and other processing equipment that can meet various industrial machinery requirements.

Distillation has numerous commercial applications. It is used to separate crude oil into different fractions for various purposes, including transportation, electricity production, and heating. Distillation is also employed to remove impurities such as salt from seawater. In industrial applications, air is distilled to separate its components, particularly oxygen, nitrogen, and argon.

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Distillation process

Distillation is a method of separating components or compounds from a liquid through boiling and condensation processes. Successful separation requires each element to have a different boiling point. The more complex the distillation process, the closer the boiling points of the components in the liquid.

Batch distillation is the most common type of distillation in laboratories. Three distillation equipment pieces are required to complete the process:

The source liquid is heated in a reboiler or pot.

The heated vapor is cooled back into a liquid state in the condenser.

The concentrate/distillate is collected in a receiving bottle.

Distillation types

Distillation can take various forms depending on the substance being processed. Here are the three most popular methods:

Fractional distillation: This method involves distilling the same liquid multiple times at higher temperatures to remove different compounds from the mixture.

Steam distillation: This method is used to extract temperature-sensitive chemicals that may decompose if extracted using a higher boiling point technique.

Vacuum distillation: Certain substances have abnormally high boiling points. In such cases, it may be more advantageous to reduce the pressure in the column above the material, allowing the lower vapor pressure components to evaporate.

Specially designed scrapers can mix waste solvents during distillation, causing powder or flakes to be discharged from the distillation system. Without using a scraper, the waste will become a thick syrup or paste. Distilling waste into powder or flakes usually produces harmless substances that can be disposed of. However, if the distillation waste becomes a thick syrup, it will likely need to be treated as hazardous material.

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Multi-effect distillation

The purpose of multi-effect distillation is to improve the energy efficiency of the process and can be used for desalination or as a stage in ultrapure water production. The number of effects is inversely proportional to the kWh/m3 of recovered water and relates to the amount of water recovered per unit of energy. A value of approximately 636 kWh/m3 is achieved.

By inputting heat energy, multi-stage flash evaporation can achieve more than 20 effects.

Vapor compression evaporation: Commercial large machines can achieve approximately 72 effects through electrical energy input.

There are many alternative multi-effect distillation techniques, including a technique called simple multi-effect distillation, which uses multiple chambers with intermediate heat exchangers.

We provide distillation equipment made in China for all industries that require such equipment. Contact us today for more information!

Contact Kate at info@ace-chn.com.

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