How does a PFR reactor work?

Fluid going through a plug flow reactor is modeled as flowing through the reactor as a series of infinitely thin coherent “plugs”, each having a uniform composition. The plugs travel in the axial direction of the reactor, with each plug having a different composition from the ones before and after it.

Is PFR better than CSTR?

A PFR has a higher theoretical efficiency than a CSTR of the same volume. That is, given the same space-time (or residence time), a reaction will proceed to a higher percentage completion in a PFR than in a CSTR.

What type of reactor is a PFR?

A plug flow reactor (PFR) is a type of continuous reactor in which material inside the reactor is assumed to flow in a “plug-like” manner. The underlying assumption of PFR behavior is that no axial mixing occurs between different “plugs” of material in the PFR. Physically, a PFR is often constructed out of a tube.

Why PFR is steady state?

At steady-state, the concentration of a reactant at any single point along the PFR is constant at Cx. Overall a stable concentration profile is obtained at steady state, with the concentration varying in space as the reaction occurs along the flow path.

Why is PFR more efficient than CSTR?

CSTR reduces concentration of reactant to minimum in less time than what PFR does. Rate of reaction is directly proportional to reactant concentration for positive order reactions. More the concentration more will be the rate. Hence PFR gives higher conversion than CSTR for positive order reactions.

Why plug flow reactor is used?

Plug Flow Reactor are used to carry out the reactions like suzuki reaction, hoffmann reaction, grignard reaction, oxidation reaction, biocatalysis and many more.

Why does PFR have better conversion than CSTR?

At high fractional conversion values, the volume required for a CSTR increases rapidly compared the the volume of a PFR. If reactor volume is the only criterion for deciding the type of reactor to use, clearly PFRs are the optimal choice.

Is PFR continuous or batch?

Answered by Bhagwat devtulya more than 6 months ago. PFR is the continuous type reactor and their is no axial mixing and it is segment of many batch reactor. MFR it is the reactor which has agitator feted and it also a continuous type. Batch reactor has input fed then the reaction occur and after o/p.

Why PFR require less volume than CSTR?

Since the rate of reaction is kC, the average rate of reaction in the PFR reactor is higher than the average rate of reaction in the CSTR. So the volume of the PFR can be less.

Why plug flow reactor is more efficient?

progressively through the system; in mixed flow, the concentration drops immediately to a low value. Because of this fact, a plug flow reactor is more efficient than a mixed flow reactor for reactions whose rates increase with reactant concentration, such as nth-order irreversible reactions, n > 0.

Is PFR a batch reactor?

PFR is the continuous type reactor and their is no axial mixing and it is segment of many batch reactor. MFR it is the reactor which has agitator feted and it also a continuous type. Batch reactor has input fed then the reaction occur and after o/p.