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

New Blog Entry

Low Flow in Pipes- posted in Ankur's blog

Co2 Structured Packing Absorber

This topic has been archived. This means that you cannot reply to this topic.
1 reply to this topic
Share this topic:
| More

#1 cheowei


    Brand New Member

  • Members
  • 3 posts

Posted 22 February 2007 - 08:02 AM

Currently, i m doing my final year project on desiging an absorber for CO2 absorption ( inside a ethylene plant). I have done some reading and specially interested in structured packed column. However, the information available for structured packed column is very little. Since i will be using blends of MDEA-DEA, i want to design it by involve chemical reaction. I have refer to several books like Coulson & Richarson, but no example with structured or chemical reaction is mentioned.

I have some question on my mind:
1) is that structured packed column is not common or flavor at all in industry? because available correlation is very few.

2) i have found some correlation for structured packed column like for effective interfacial area, and mass transfer coefficient ( such as Fair & Bravo correlation?), can i cooperate these correlation into the method i found in C&Richarson, that in the example is applied to randon packing?

3)First, i have to get equilibrium data for calculating NOG (number of stage). I can only obtain the co2 partial pressure data VS Co2 Loading. I don't see any point i can use the method in C&Richarson Volume 6. Should i use the intergration of partial pressure from p1 to p2 (C&R, volume 6,pg 595, equation 11.104 if u have it). Do you have any recommended book for multi component absorption?

4) I have found some theory on absorption with chemical reaction, but it's all the diffusion concept. I didnt manage to find out a way to incorporate the theory inside to the freely -dissolved gas example ( the only example i got) i found. So what should i do? However the equilibrium data i hv is with chemical reaction for the co2 loading data.

5)I dont have the experiment specification (gas& liquid flow rate...) for the Partial Pressure VS CO2 loading data i get,so is it possible to convert it to equilibrium data?
Thanks for your kindness on viewing my problem statement. Your reply will be very much appreciate (since i am bottle-necked now...)


  • guestGuests
  • 0 posts

Posted 08 October 2009 - 07:50 AM

Hi I am doing my final project now on a similar topic however I am absorbing H2S and CO2 and have to design the packed column. I have equilibrium data for both chemicals being absorbed. I have found a method for calculating number of theoretical stages using the slope of the vle data but since I have 2 absorbates I am not sure how to modify this. How did your project end up and can you provide any tips?
Thanks, Jimmy

Similar Topics