Page 60 - Separation process engineering

C1. Write the mass and energy balances (in general form) for the separator shown in Figure 1-1. If
you have difficulty with this, review a book on mass and energy balances.

D. Problems

D1. One of the prerequisites for study of separations is the ability to convert from weight to mole
fractions and vice versa. As a refresher in this conversion, solve the following problem: We have
a flow rate of 1500 kmol/h of a feed that is 40 mol% ethanol and 60 mol% water. What is the
weight fraction of ethanol, and what is the total flow rate in pounds per hour?

E. Complex Problems

There are no complex problems for this chapter.

F. Problems Using Other Resources

F1. Look through several recent issues of Chemical Engineering magazine or similar technical
magazines and find an article that contains a process flow chart. Read the article and write a short
(less than one page) critique. Explicitly comment on whether the flow sheet for the process fits (at
least approximately) the general flow sheet shown in Figure 1-1.

F2. Arrange a tour of the unit operations laboratory in your institution to observe the different types of
separation equipment. Note that although this equipment is often much larger than the separation
equipment that you used in chemistry laboratory, it is much smaller than industrial-scale
equipment.

G. Simulator Problems

There are no simulator problems for this chapter.

H. Computer Spreadsheet Problems

There are no computer spreadsheet problems for this chapter.