2 replies to this topic

Hello Everyone,

I have a mixture of biodiesel, THF, Methanol, glycerol and hydrated Na2SO4. The densities of the components are as follows:

Biodiesel: 0.868
Methanol: 0.783
THF: 0.876

Glycerol:1.286
Na2SO4 (around): 1.464

I wanted to simulate the separation using the liquid-liquid hydrocyclone in HYSYS but it requires me to specify the oil droplet diameter. Does anyone have an idea on how I can simulate the separation?

I also need some information on how to design such a hydrocyclone, and if there is any excel sheets that are prepared to do so.

Best regards

[ankur2061]

CHE-ENG,

Excellent guidelines on hydrocyclone sizing are provided in section 10.4.4 "Hydrocylones (liquid-cyclones)" in the book "Chemical Engineering - Volume 6" by Coulson & Richardson.

Also refer a previous post on hydrocyclones on "Chereosurces" at the following link:

http://www.cheresour...h__1#entry43078

Regards,
Ankur.

Edited by ankur2061, 20 August 2011 - 03:41 AM.

[kkala]

Data on hydrocyclones can be also traced in the thread http://www.cheresour...h__1#entry49721.
In the past I had estimated hydrocyclone diameter and pressure drop for solid-liquid separation. My impression is that solid-liquid separation was the "mission" of hydrocyclones in the past, while liquid-liquid separation due to difference in specific gravity has been recently applied with rather satisfactory results; see thread http://www.cheresour...h__1#entry46706, or http://www.cheresour...h__1#entry50493.
The data you require may be (still) proprietary, yet any clarification on this point by members would be welcomed.

Edited by kkala, 20 August 2011 - 03:53 AM.