• Mass must be conserved
• Atomic species of a reacting systems cannot
be created or destroyed.
• Balance of momentum must be satisfied
• Balance of thermal energy must be satisfied
• Thermodynamic relations must be satisfied
// Example of Reacting System
Incomplete combustion of ethane
How is the reactor performance dictated by:
- reactor temperature? (how does T varying within reactor)
- residence time of reactor?
- inlet/exit compositions? (how does Ci varying within reactor)
- laminar vs turbulent flow?
- use of catalysts? (homogeneous vs hetrogeneous reactions)
// Analysis of Chemical Reactors and the Connecting Disciplines
// Mathematical Models of Chemical Reactors
- Batch reactor – no mass in or out
- Continuous stirred tank reactor (CSTR) – completely mixed
- Plug flow tubular reactor (PFTR)- completely unmixed
- Batch reactors operate in transient (unsteady) mode
- CSTR and PFTR may be operated in steady state or transient modes
- Industrial reactors are combinations of the above