Jump to content

Featured Articles

Check out the latest featured articles.

File Library

Check out the latest downloads available in the File Library.

New Article

Product Viscosity vs. Shear

Featured File

Vertical Tank Selection

Vle In Hysys

This topic has been archived. This means that you cannot reply to this topic.
No replies to this topic
Share this topic:
| More

#1 Guest_RCW_*

  • guestGuests

Posted 11 February 2010 - 02:35 PM

Hello, I've simulated a process in HYSYS, with several columns, one of which is a deethanizer modelled as a reboiled absorber. I'm trying to perform hand calculations to see whether I obtain the same number of trays as HYSYS. I need to absorb propene and heavier from the gas stream.

1. However, it is a multicomponent system, so I am having dificulty obtaining the equilibrium data from HYSYS (my teacher said that I can obtain the equilibrium curve from HYSYS). How do I do this please? (It contains methane all the way to decane). I don't mind whether it is the Temperature/compostion equilibrium graph as I can then obtain x & y myself and plot it, however, I am completely lost as to how to do this with a multicomponent system on HYSYS. I really need the equilibrium curve graph so that I can then plot the operating line and obtain the equilibrium number of trays requird.

2. Also, my gas stream is concentrated, so how do I calulate the value of A (absorption factor) and K, as my liquid and gas flowrates are not constant? I tried obtaining K values myseld from the DePriester charts, and they were very similar to the values produced by HYSYS, and the temperature varies significantly down the column.

Thankyou in advance.

Similar Topics