Chemical reaction engineering is a subset of chemical engineering, and it is often simply called reaction engineering. Its content can be roughly divided into reaction kinetics and reactor design and analysis. Reaction kinetics is mainly concerned with the mechanism and the rate of chemical reactions. The three classical generic chemical reactors are the batch reactor, the continuous stirred-tank reactor (CSTR), and the plug flow tubular reactor (PFR). Each of these reactor types has its own unique characteristics, advantages, and disadvantages. Bed reactor is used to contact fluids with solids. It is one of the most widely used industrial reactors and may or may not be catalytic. The bed is usually a column with the actual dimensions influenced by temperature and pressure drop in addition to the reaction kinetics. Catalytic reactions and reactors have widespread applications in producing chemicals in bulk, petroleum, petrochemicals, pharmaceuticals, specialty chemicals, etc. These rigorous design efforts, firmly based on sound mathematical principles, triggered the development of several profitable catalytic processes. types of catalyst Fixed bed reactors. Trickle-bed reactors. Moving bed reactors. Rotating bed reactors. Fluidized bed reactors. Slurry reactors. Using catalysts leads to faster, more energy-efficient chemical reactions. Catalysts also have a key property called selectivity, by which they can direct a reaction to increase the amount of desired product and reduce the amount of unwanted byproducts.

1. Chemical Reaction Engineering
Catalysts in Chemical Reactor Designs
PREPARED BY
DIMA JAWHAR
ARA FAKHER
RAYAN HAWEZ
SUPERVISED BY
MR. TWANA NAJIH
HASSAN
Koya University
Faculty of Engineering
Chemical Engineering
2023 - 2024

2. Outline
 What is chemical reaction engineering? (CRE)
 Catalyst reactor
 Packed Bed Reactor
Advantage and disadvantages of PBR
 Types of catalysts
Why use catalyst reactors?
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3. Chemical Reaction Engineering
• Chemical reaction engineering is a subset of chemical engineering,
and it is often simply called reaction engineering. Its content can be
roughly divided into reaction kinetics and reactor design and
analysis.
• Reaction kinetics is mainly concerned with the mechanism and the
rate of chemical reactions.
• The three classical generic chemical reactors are the batch reactor,
the continuous stirred-tank reactor (CSTR), and the plug flow tubular
reactor (PFR). Each of these reactor types has its own unique
characteristics, advantages, and disadvantages.
3

4. Packed Bed Reactors
Bed reactor is used to contact fluids with solids. It is one of the most
widely used industrial reactors and may or may not be catalytic. The bed
is usually a column with the actual dimensions influenced by temperature
and pressure drop in addition to the reaction kinetics.
4

5. Packed Bed Reactors
• Packed bed reactors are tubular and are filled with solid catalyst
particles, most often used to catalyze gas reactions. The chemical
reaction takes place on the surface of the catalyst.
• PBR consists of a cylindrical shell with convex heads. Most are
vertical and allow reactants to flow by gravity. Inside the reactor
is an immobilized, or fixed, bed of catalyst. Packed bed reactors
are heterogeneous reaction systems.
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6. 6

7. Packed Bed Reactors
These rigorous design efforts, firmly based on sound mathematical principles,
triggered the development of several profitable catalytic processes
The differential form of the PBR design equation is
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8. Advantages and disadvantages of packed bed
reactor:
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9. Catalyst Reactors
 Catalytic reactions and reactors have widespread applications in
producing chemicals in bulk, petroleum, petrochemicals,
pharmaceuticals, specialty chemicals, etc.
 These rigorous design efforts, firmly based on sound mathematical
principles, triggered the development of several profitable catalytic
processes.
9

10. Types of Reactor Catalysis
 Fixed bed reactors.
 Trickle-bed reactors.
 Moving bed reactors.
 Rotating bed reactors.
 Fluidized bed reactors.
 Slurry reactors.
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11. Why use a catalyst reactor?
Using catalysts leads to faster, more energy-efficient chemical reactions.
Catalysts also have a key property called selectivity, by which they can
direct a reaction to increase the amount of desired product and reduce
the amount of unwanted byproducts.
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12. References
1. Energy.Gov(2020), doe explains catalysts office of science.[Online] available:
https://www.Energy.Gov/science/doe -
explainscatalysts#:~:text=using%20catalysts%20leads%20to%20faster,the%20amount%20of%20unw
anted%20byproducts. [Accessed: oct./17/2023]
2. Zeynep ilsen onsan, ahmet kerim avci (2016), catalytic reactor types and their industrial
significance. .[Online] available:
https://www.Researchgate.Net/publication/304479696_catalytic_reactor_types_and_their_industrial
_significance#:~:text=three%20broad%20categories%20of%20catalyst,reactor%2c%20and%20slurry
%20phase%20reactor. [Accessed: oct./17/2023]
3. Alexandra foley(2014), what is a packed bed reactor?[Online]. Available:
https://www.Comsol.Com/blogs/packed -bed-reactor/ [accessed: oct./17/2023]
4. Sara kisty(2017), catalytic reactors.[Online] available:
https://www.Slideshare.Net/sarahchristy3/catalytic -reactors [accessed: oct./17/2023]
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