Fractional distillation

Fractional distillation

Fractional distillation

05/28/17

“How can we have distillation for materials with more than two substances?”

 

Distillation is the process of separating two substances using the science of evaporation and condensation in regard to different boiling points. However, how can we make this process happen for materials such as crude oil which are composed of many different substances? Well, let’s use our engineering mindset to find out. Let’s start out with a simple test tube. In this test tube, let’s also have another smaller tube at the midsection leading to a stationary beaker. Now let have the bottom portion of the main tube be immersed in a hot fluid. When we dispose a material into the tube, the hot fluid will heat the material until one of the substances evaporates. The gas from the evaporated substance will rise and move through the tube, eventually reaching the midsection tube, cooling and condensing into a liquid form in the beaker. Once all of this substance has been removed, we can swap out the old stationary beaker for a new one, replace the hot liquid with a bunsen burner, and repeat the process. This procedure is known as fractional distillation and is commonly employed for separating substances with numerous hydrocarbons.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s