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The plug flow reactor model (PFR, sometimes called continuous tubular reactor, CTR, or piston flow reactors) is a model used to describe chemical reactions in continuous, flowing systems of cylindrical geometry.
The plug flow reactor or piston flow reactor is a rectangular-type idealized flow reactor that uses a continuous fluid flow for processing materials throughout a tube.
A plug flow reactor is a cylindrical shaped tank where chemical reactions occur between a catalyst coated in the sides of the wall of the reactor and an inlet reactant ( Fig. 10.2A ). Plug flow reactors are mostly used for their unique property of not requiring any mixing.
Sep 24, 2022 · Another type of reactor used in industrial processes is the plug flow reactor (PFR). Like the CSTRs, a constant flow of reactants and products and exit the reactor. In PFRs, however, the reactor contents are not continuously stirred.
Diagram of a plug flow reactor showing flow in the z-direction. dV =⋅area dz Mass flow rate is constant (vAρ)=const. ρ=∑CWii For a liquid, dρ =0 dz dv()ρA dv dA dρ =+ρρAv+Av=0 dz dz dz dz Rearrange: dv ⎛⎞11dA dρ =−v⎜⎟+ dz ⎝⎠A dz ρdz For a normal pipe dA =0 and for a liquid dz dρ =0 dz Therefore: dv =⇒0 vv= dz 0
Plug flow is an important characteristic of flow reactors, whereby any two molecules entering the reactor at time zero, exit at a similar time. The PFR reactor model provides an effective means of controlling reaction time while optimising the separation of reactants and products.
Plug flow reactors, also known as tubular reactors, consist of a cylindrical pipe with openings on each end for reactants and products to flow through. (Copyright High Pressure Equipment Co., Erie, PA)
Plug Flow Reactors (PFRs) Type of Reactor. Characteristics. Continuously Stirred Tank Reactor (CSTR) Arranged as one long reactor or many short reactors in a tube bank ; no radial variation in reaction rate (concentration); concentration changes with length down the reactor. Kinds of Phases Present.
Jun 22, 2021 · 44 Citations. 23 Altmetric. Metrics. Abstract. In the past decade, the field of organic synthesis has witnessed tremendous advancements in the areas of photoredox catalysis, electrochemistry, C–H...
Any reactor that can be described by the plug flow model, no matter what its structure, is called a plug flow reactor. Similarly, any reactor that follows the complete mixed assumption is a complete mixed reactor.
