Single Unit Material Balances Chemical Reactions Worksheet printable pdf download

Single Unit Material Balances Chemical Reactions Worksheet

Procedure for Single Unit Material Balances

1. Choose a basis for the Calculation

Mass, Mole, Mass/time, Mole/time

2. Draw a flow Chart and fill in all the known values on the chart!

Label all unknown streams use n

for molar and m

for mass. y

for

mole and mass fractions.

3. Convert all to a consistent basis (mass or moles).

4. Express the problem requested answers in terms of the labeled variables.

5. Do the degree of freedom analysis!

6. Write down in an efficient order and circle the variables for which you will

solve. Start from lowest number of unknown variables, then higher….

7. Solve the Equations

8. Calculate the quantities requested in the problem (4) if not already calculated.

9. Scale the answer to that required.

Material Balance in General:

accumulation = input + generation - output - consumption

Material Balances for each species + overall mass balances.

Recall that N-1 mole or mass fractions are needed !!!

How to handle Batch Processes?

number of degrees of freedom?

Single Unit Material Balances Chemical Reactions Worksheet