CHEN3010 Lecture Notes - Lecture 12: Jmol, International Hockey Federation, Nominal Pipe Size
2 Jul 2018
School
Department
Course
Professor
Chemical Reaction Engineering
CHEN3010/5040
Semester 1 / 2018
Steady-State
Non-isothermal Reactor Design
(Fogler Chapter 11 & 12)
Gia Hung Pham
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Introduction
- Reaction rate of a chemical reaction is a function of
reaction temperature and concentration of the reactants
For the first order reaction A B
-We assume the reaction temperature doesn’t change
during the reaction dT=0 and design an isothermal
reactor (Chapter 4).
-Unfortunately, most of the chemical reactions occur in the
reactor non-isothermally.
A
RT
E
A
ACeA
dt
dC
r
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Factors influenced by T
- Maximum conversion
- Reaction Rate
- Product distribution (selectivity, yield)
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Document Summary
Non-isothermal reactor design (fogler chapter 11 & 12) Reaction rate of a chemical reaction is a function of reaction temperature and concentration of the reactants. We assume the reaction temperature doesn"t change during the reaction dt=0 and design an isothermal reactor (chapter 4). Unfortunately, most of the chemical reactions occur in the reactor non-isothermally. Design a reactor with heat effect (dt 0). We design a pfr with the effect of reaction temperature t. Calculation of the reactor volume necessary to achieve a conversion x. In order to solve this equation for x we need to know the relationship between x and t. We use the energy balance to find the relationship between. The flow system is operated at steady state: desys dt. The heat of reaction at any temperature t in term of the heat of reaction at a reference temperature tr (298k) and the cp term.
