Elements of
Chemical Reaction Engineering
6th Edition



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Essentials of
Chemical Reaction Engineering
Second Edition

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Chapter 6: Isothermal Reactor Design: Molar Flow Rates

Additional Homework Problems

CDP6-EB

A liquid organic substance, A, contains 0.1 mol % of an impurity, B, which can be hydrogenated to A:

B+H2 → A

The material is purified by hydrogenation as a liquid in a continuous well-mixed reactor at 100°C. The feed rate of the liquid is constant at 730 lb/h. The reactor holds 50 gal of liquid, at 500 psig, and the amount of B in the product levels out at 0.001 mol %. What will be the concentration of B in the product if the hydrogen pressure is held at 300 psig? Assume that the reaction behaves as though it were first order with respect to both B and H 2 , that is, in batch,

IMAGE 04eq10.gif

IMAGE 04eq11.gif

Assume perfect gas laws and Henry's law. Also assume the following properties:

IMAGE 04eq12.gif

[2nd Ed. P4-15]