4.1 General Discussion
Broad Classification of Reactor Types
Material Balance
Energy Balance
Symbols and Relationship between C
Aand X
AThe relationship between CA and XA is often not obvious but depends on a number of factors, such as density(), temperature (T) and pressure ().
Case 1) Constant density batch and flow systems
Case 2) Batch and flow systems of gases of changing density but with T and constant Case 3) Batch and flow systems of gases in general (varying , T, )
Case 1) Constant density batch and flow systems
- most liquid reactions
- gas reactions that run at constant temperature and density
Fractional change in volume
Density changes because of the change in number of moles during reaction Since the volume of a fluid element changes linearly with conversion
Case 3) Batch and flow systems of gases in general (varying , T, )
for ideal gas
Example 4.1 ) A Balance from Stoichiometry
Case 2 (volume change) calculate
