Continuous Stirred Tank Reactors (CSTRs) are agitated, tank-like reactors that are widely used in chemical processes for reactions that require continuous input of reactants and removal of products. The reactor maintains a uniform composition and temperature through constant mixing. Ideal CSTRs operate at steady state with perfect mixing, leading to the same conditions throughout the reactor. These are an excellent choice for large tonnage continuous processes, with medium speed to slow reactions and especially for liquid systems. They can handle solids and viscous fluids without problems and can be easily cascaded to give PFR like behaviour.
