3 replies to this topic

[saleda]

in our solvent recovery process, intailly we have only one vacuum tray drier for what condenser was designed , now second smaller dryer is installed. which resulted in more vapor flow and loss of acetone that jumped condenser. now rather that manufacturing and designing new condenser, we have found one spare condenser of same size in our facility. should new condenser be in parrallel or in series of existing?. Or can we somehow control that initial high flow of acetone vapors, if flow can be conntrolled intially then 2nd condenser installation could be avoided. and in current setting what other factors can reduce acetone recovery. our current recovery is mere 45%.

 condenser.xlsx   12.33KB   18 downloads

Thanx
Saleda

[breizh]

Hi ,
Take a look at the data sheet issued for the exixting condenser , this will help you to answer the questions and find the limiting factor to install the condenser in serie or parallel .


Hope this helps
Breizh

[S.AHMAD]

Saleda
1. This is just my general opinion without looking at the detailed design.
2. Since pressure drop is critical for vacuum system, I think arrangement in parallel would be better (less pressure drop).

[Padmakar Katre]

Hi,
Need to evaluate the the integrated system i.e. including the vacuum pump. If the same quality of vapors(composition, pressure and temperature, flow) comes from the new drier, then you need ascertain the available margins with existing condenser and vacuum pump. Putting new condenser in series will add more pressure drop within system, but may help for acetone recovery by further condensation and less vapors to vacuum pump. Putting it parallel is a straight answer as capacity control, but again the acetone loss and adequacy of vacuum pump for extra vapors needs to be studied. Unless you come with those numbers, it is not possible for us to comment specifically.