Question

# Is a packed bed reactor and a fixed bed reactor the same thing? What's the difference?

Is a packed bed reactor and a fixed bed reactor the same thing? What's the difference?

Both are same.

The reactor is said "fixed" because the pellet present in it is not movable unlike Fluidised bed.

And it is said to be "packed" because the pellets are loaded in packed way.

The Fixed/packed bed reactor is filled with pallet which can be catalys or normal fillers between distributor and diffuser.

If it is used for Absorption or stripping, or mass trasfer operation ,the pellets should have specific design characteristics such that it increase the residence time of reaction as well as the interfacial area.

If it is used in Chemical reaction then the pallet can be Catalyst, which promotes the reaction.

General design of Fixed/packed bed:

Hope this will be useful

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