A Real Time, Dynamic Binary, Distillation Simulation For Web Based Instruction

Simulation of complex processes in real time is essential for web-based instruction. Dynamic distillation has unique problems because of the large number of differential equations that must be solved simultaneously. This paper describes a simplified model that simulates the dynamic operation of the distillation of isopropanol/water. The model simulates all aspects of batch operation; beginning from cold startup, through the startup, total reflux operation, production of product, through shutdown. The control scheme is included so that users can operate and tune controllers. In spite of numerous simplifications, the model preserves the essential features for a real time simulation. The entire applet is only approximately 70K and is used for Internet based laboratory instruction. This paper focuses on the derivation of the model. A more complete discussion of the results will be presented at some other time.