Sandeep, I am not sure what your question is - I suspect there is a language barrier to overcome. Does EO mean "Enhanced Oil"? If so that usually means steam injection and likely other surfactants (a fancy word for soap). Crudes are typically settled to remove water and filtered to remove particles before atmospheric distillation with atmospheric bottoms going to vacuum distillation nonvolatile components will end up in the Vacuum Residual Oil (vacuum column bottoms).

Does that answer your question?

Respected Sir,

EO refers here for Essential Oil. My question is related to the rectification of crude essential oil which is obtained after steam distillation process. we receive crude oil after steam distillation process contains moisture, dust and rust. Is there any particular method to rectify it without losing its chemical constitution and property except high speed centrifugation method?

Thankd and regards.

Please describe what you mean by "essential" oil and how you produce it. I suspect the words "crude" and "essential" have different meaning to you than they do to me.

If I understand correctly, "essential oil" is a term referring to a fragrance oil obtained from a plant source. They typically have a 10 carbon structure.

Your raw material is from a steam distillation of a plant source and contains undesirable water, dirt, dust, and rust.

In my experience with essential oils, our raw material was terpene based and usually our goal was purification. Vacuum batch distillation was the typical technique. Some distillations were run continuously.

Essential oils experience chemical breakdown at their atmospheric boiling temperature, so vacuum distillation is required to keep the temperature down and preserve the product molecule. The vacuum source can impact the effectiveness of the distillation. Steam jets can easily handle water vapor, but are not energy efficient. Blowers in combination with liquid ring pumps are another option that can handle water fairly easily.

If centrifugation can get your product with appropriate purity, then that will be lower cost than a vacuum distillation. Other industrial scale options include:

1. Filtration - a good filter should get most of your particulate impurities. Then you would only have water remaining.

2. Here's an article overview about removing water from oil and its limitations (can't remove dissolved water):

https://www.machinerylubrication.com/Read/177/removing-water-oil-contamination

Steam Distillation is the most popular method used to extract and isolate essential oils from plants for use in natural products. This happens when the steam vaporizes the plant material's volatile compounds, which eventually go through a condensation and collection process

For more information ,we have :

https://www.aromaworld4u.com/ExtractionMethods/Rectification.html

http://www.epharmacognosy.com/2014/11/rectification-and-fractionation-of.html

Rectification can be use by dry-vacuum-distillation of EOs. Please see this handbook (Vol. 1):

The Essential Oils. Author: Ernest Guenther