What is the benefit of using a PFR over a batch reactor?

Advantages compared to the PFR are the improved controllability and mixing. It is much easier to adjust e.g., an optimal temperature or concentration profile in such a multistage CSTR than in a PFR. The reactor analysis for each reactor is identical to a single CSTR.

What is the difference between plug and mixed flow reactor?

In plug flow, the concentration of reactant decreases progressively through the system; in mixed flow, the concentration drops immediately to a low value.

Is heat balance and energy balance same?

Then, only the enthalpy of the materials (at constant pressure), the standard chemical-reaction energy (ΔH0) at 25°C, and the heat added or removed must be taken into account in the energy balance. This is generally called a heat balance.

Where is batch reactor used?

Batch reactors are used to study the behavior of fluids with materials under various conditions of temperature and pressure. In a chemical process, horizontal or vertical vessels are also used to store fluids or to provide a volume so that a mixture of liquid and vapor can separate into two distinct phases.

What is the mass balance of a plug flow reactor?

Since tracer concentrations in the reactor are uniform and all equal to the tracer concentration in the effluent, the accumulation of tracer in the reactor within a unit of time is Vtdc / dt. Taking the mass balance of the tracer in the reactor gives:

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

Can a plug flow reactor compensate for the loss of conversion?

On the other hand conversion of the other 36.8% of fluid whose residence time is greater than the mean residence time is greater than that in a plug flow reactor, which, however, cannot compensate for the loss of conversion due to the short residence time.

What are the characteristics of an ideal plug flow reactor?

IDEAL PLUG FLOW REACTOR Characteristics of ideal plug flow PERFECT MIXING IN THE RADIAL DIMENSION (UNIFORM CROSS SECTION CONCENTRATION) NO MIXING IN THE AXIAL DIRECTION, OR NO AXIAL DISPERSION (SEGREGATED FLOW)

What is the benefit of using a PFR over a batch reactor? Advantages compared to the PFR are the improved controllability and mixing. It is much easier to adjust e.g., an optimal temperature or concentration profile in such a multistage CSTR than in a PFR. The reactor analysis for each reactor is identical to a…