3 replies to this topic

[mixednuts]

Hi,

 

my teacher tasked me with this problem and I have cracked my brains but to no avail. lets say u are given a spray absorption column. The aim of this absorption tower is to scrub SO2 from the exhaust gas by using washwater of 20% Na2SO4 in a counter current fashion. The exhaust gas will be flowing upwards while the washwater is being sprayed downwards in a conical fashion. How do I do the mass transfer/balance for this?

 

The information I have:

for the exhaust gas: Temperature, volumetric flow rate, mole% composition, density, mass flow rate.

for the washwater: the volumetric flow rate, density, mass flow rate, temperature and 20% Na2SO4.

 

I have searched the net for spray absorption column but all the calculations and methods are based on packed or tray columns. Can the kind souls in here guide me to a direction so that i can read up or at least have an understanding of the situation and the equations applicable to this situation

 

Thanks,

Regards,

Mixednuts

[mixednuts]

anyone able to help?

 

appreciate it

[thorium90]

You can read Coulson and Richardson Vol 6, Chapter 11.14.2 onwards.

You can also read Mass Transfer Operations by Robert Treybal

 

This spreadsheet will be helpful

http://www.cheresour...crubber-design/

 

Just because its a solution doesnt mean the equations used will be completely different.

Edited by thorium90, 14 May 2013 - 08:44 AM.

[breizh]

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