Assignment 2 Flashcards
What is an ideal solution?
Homogeneous mixture of substances that has physical properties linearly related to the properties of the pure components.
How to convert the mass flowrate to mole flowrate?
m/M=n
Which of the following equations are the correct Antoine’s equation?
(1) T_i^sat=B_i/(A_i·lnP )·C_i,
(2) T_i^sat=C_i/(A_i·lnP )·B_i,
(3) T_i^sat=C_i/(P·lnA_i )·B_i
(1) T_i^sat=B_i/(A_i·lnP )·C_i
For given P and x_i, how do you calculate bubble point temperature and y_i
By using Antoine’s equation and an iteration.
Define the different stages of an distillation collumn
Feed stage, rectifying section and stripping section
McCabe Thiele method?
Construct the following:
1) x,y-diagram
2) Feed line
3) Rectifiying line
4) Stripping line
5) determine equilibrium line and numbers of stages
What is the D stream?
The overhead product
What is the B stream?
The bottom product
What is the ̅L stream?
The stream going to the reboiler
What is the ̅V stream?
The vapor coming back from the reboiler
What is the V stream?
The vapor leaving the column
What is the L stream?
The liquid going back into the column from the condenser
How do you construct the feed line?
Feed line equation (remember the thermal condition of the feed entering)
What is the mass balance for the rectifying section?
V=L+D
Why do toluene and benzene create a nearly ideal solution?
The are chemically equivalent
Why do toluene and benzene create a nearly ideal solution?
The are chemically equivalent
Formular used to calculate the heat duty of the reboiler?
'’Reboiler equation’’, the calculated steam flow rate and the total latent heat.
Method used for the condenser heat duty calculations?
Same unit operations as the method used in reboiler operations with the exception of the use of waters flow rate, specific capacity of water and the change in temperature
Which stage should be the feed stage?
The feed stage is determined where the stage goes from the rectifying line past the feed line and reaches the stripping line.
