CHEN 3102 Lecture Notes - Lecture 43: Molecularity, Batch Reactor, Plug Flow

• School: UMN
• Department: Chemical Engineering
• Course: CHEN 3102
• Professor: Paul Dauenhauer

Document Summary

Question: how can we design a reactor to minimize/maximize yield of an intermediate? ex: we want to maximize the intermediate v how we solved it before: write mass balance of each of the species. Consider incompressible fluids we divided by cross-sectional area (space time) for z = l and. Species v z = 0 cv(z = 0) = 0. Plug flow reactors with space time behave the same way as batch reactors with normal (clock) time. The expressions for ca and cv look very similar to the batch eqns we did. Equivalent question in batch reactor: how long should we run the reactor. The valuable component, v, is at a maximum when. *compare w/ topt you calculated for a --> v --> w with time in a batch reactor. *for constant density systems, a pfr behaves with as a batch reactor does with time. Differentiate cvf with and set it equal to zero.