What is the mass transfer formula for a plug flow reactor?

What is the mass transfer formula for a plug flow reactor?

[accumulation] = [in] – [out] + [generation] – [consumption] where: x is the reactor tube axial position, m. dx the differential thickness of fluid plug.

How do you calculate reactors?

1. The basis of calculation is always the limiting reactant.
2. Batch: Moles A remaining = NA = Moles A initially – Moles A reacted.
3. Flow: Rate of Moles of A leaving FA = Rate of Moles of A fed – Rate of Moles of A reacted =
4. *

Why do we use plug flow reactor?

Plug flow reactors have a wide variety of applications in either gas or liquid phase systems. Common industrial uses of tubular reactors are in gasoline production, oil cracking, synthesis of ammonia from its elements, and the oxidation of sulfur dioxide to sulfur trioxide.

Where is plug flow reactor used?

Usage Examples. Plug flow reactors have a wide variety of applications in either gas or liquid phase systems. Common industrial uses of tubular reactors are in gasoline production, oil cracking, synthesis of ammonia from its elements, and the oxidation of sulfur dioxide to sulfur trioxide.

Why conversion is higher in the plug flow reactor?

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.

What is the performance of a Plug Flow Bioreactor with a recycled stream?

Levenspiel [8] described the performance of a plug flow bioreactor with a recycled stream as: where V is the volume of the reactor (m 3 ), FAO is the mass flow rate of the feeding stream (kg/h), R is the recycle ratio, Xf is the conversion of products, and (– rA) is the kinetic expression of the chemical reaction [9].

What is plug flow reactor?

The plug flow reactor is the second-most primary ideal reactor and is similar to the continuous stirred tank bioreactor. Here polymerization and conversion reactions are performed in noncatalytic mode. The polymerization of ethylene and the conversion of naphtha to ethylene are examples.

What is the differential equation for plug flow reactor?

The plug flow reactor is characterized by the differential equation for species balance (3.17) m ˙ ″ ( d σ i /d x ) = ∑ ( v ″ i j − v ′ i j ) r j and for energy conservation

How to express the general mass balance equation?

The general mass balance equation can then be expressed the following way for one of the slices of fluids in the reactor : The units of each component of the expression is a material flowrate : mol/s for instance. 2. Plug Flow reactor in steady state : mass balance The study is done on a small slice of the reactor, of volume dV.