3 replies to this topic

[peruanolimense]

Hi, I've been searching the web in order to find the HEPT of glass Raschig rings, however I've found nothing. 

Could someone help me please?

[breizh]

Hi

A good resource is Perry's handbook .

Another one using my favorite search engine !!

 https://cdn.intechop...tion_column.pdf

 

one more resource , estimation supplied in the scrubber sizing document (Norton"s correlation) 

 

Good luck

Breizh 

[PingPong]

Hi, I've been searching the web in order to find the HEPT of glass Raschig rings

Why would you want to use Raschig rings? They are not very efficient.

 

What is the kind of vapor and liquid in the column?

 

HETP depends on type of packing, size of packing, properties of liquid and vapor, .........

[breizh]

Hi,

Another correlation for Rashig rings from  Hands & Whitt  from my old notes ( 1983) 

HETP = 2.1*10^2* ( eta liquid * d /Uml) ^0.5   in C.G.S  system    , HETP expressed in centimeter 

with eta liquid in Poise , d packing in centimeter and Uml in gram/cm2 (second)

 

Good to check on Internet or any text book  like https://books.google...t whitt&f=false

be extremely cautious about the unit system used .

another paper :

http://www.grandjean...33 2003 145.pdf

 

As you can see a lot of documents are available on internet .

 

Good luck

Breizh