Unit 15 Chemical Reaction Engineering Fig.3.I shows a typical situation.The raw materials undergo a number of physical treatment steps to put them in the form in which they can be reacted chemically.They then pass through the reactor.The products of the reaction must then undergo further physical treatment-separations,purifications. etc.-for the final desired product to be obtained Physical Chemical Physical Raw treatment Treatment treatment products materials steps steps steps Recycle Fig.3.1 Typical chemical processFig.3.l shows a typical situation. The raw materials undergo a number of physical treatment steps to put them in the form in which they can be reacted chemically. They then pass through the reactor. The products of the reaction must then undergo further physical treatment-separations, purifications, etc. -for the final desired product to be obtained. Physical treatment steps Chemical Treatment steps Physical treatment steps Raw materials products Recycle Fig.3.l Typical chemical process Unit 15 Chemical Reaction Engineering