2 replies to this topic

[mubarak56]

guys kindly tell me that how can i find liquid and vapor density in the bottom and top of distilation column for calculation of flow parameter/ liquid vapor flow factor(F_LV). to find diameter of column.

to calculate vapor density i am using d=PM/RT. is it okay????

 

F_LV=(L/V)*(vapor density/liquid density)^0.5

 

its been 3 hours since i am searching on this topic and could not find anything.

 thanx in advance...

 

 

 

waiting for your answer...

 

[Raj Mehta]

Liq. density = (wt fraction of comp 1)*(density) + (wt. fraction of comp 2) * (Density) + .....

 

Gas density 

1. calculate mole fraction.

2. find avg. molecular weight = (mole fraction of comp 1)*(mol. wt.) + .....

3. rho1 = avg. mol wt / 22.4

4. use P1/(rho1 * T1) = P2 / (rho2 * T2) ..... where P1 = 1atm, rho1 calculated in step 3. , T1 = 273 kelvin & P2 = top / bottom column pressure, rho2 = ?, T2 = column top or bottom temperature in kelvin. 

 

Hope it helps.

 

Thanks.

[mubarak56]

thanx a lot man