Kinetics and Reactor Design Simulations

Batch Reactor with Multiple Reactions

Concentrations versus time for three reactions in an isothermal batch reactor

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Diffusion and Reaction in a Catalyst Pellet

Overall reaction rate in an isothermal, porous spherical catalyst pellet for diffusion-limited reaction

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Enzyme Inhibition Kinetics

Reaction rates for Michaelis-Menten enzyme kinetics with inhibition

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Inhibition of Enzyme Reactions in CSTR and Batch Reactors

Substrate concentration versus time for enzyme reactions with inhibition in CSTR and batch reactor

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Isothermal PFR

Molar flow rate in a PFR versus cumulative reactor volume

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Isothermal PFR with Recycle

Reaction in an isothermal PFR with recycle

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Langmuir-Hinshelwood Reaction in a PFR

Partial pressures and fractional surface coverages versus reactor length for catalytic reaction in PFR

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Langmuir Isotherms for a Binary Mixture

Langmuir isotherms for both components in binary mixture

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Material Balances on a CSTR Digital Experiment

In this experiment, two liquid reactants in aqueous solutions flow into a steady-state, continuous stirred tank reactor (CSTR). The objective is to determine the rate constant and the reaction order with respect to one of the reactants.

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Membrane Reactor for an Equilibrium-Limited Reaction

A membrane that only permeates one reaction product is used to increase conversion for a reversible reaction

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Multiple Steady States in a CSTR

Multiple steady states for a reversible exothermic reaction in a CSTR with heat transfer

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Multiple Steady States in an Isothermal CSTR

Multiple steady states for nonlinear reaction rate in isothermal CSTR

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Multiple Steady States in CSTR with Heat Exchange

Multiple steady states (stable, unstable, or limit cycles) for exothermic reaction in a CSTR

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Operating a Chemostat

Concentrations versus feed rate for cell growth in a steady-state CSTR

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Residence Time Distribution of CSTRs in Series

This plots the residence time distribution of a series of continuous stirred-tank reactors.

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Reversible Reaction in an Adiabatic PFR

Conversion vs. temperature plot for reversible reaction in adiabatic PFR

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Scale-Up of a Batch Reactor

Problem scaling up a batch reactor with a cooling jacket

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Selectivity in a Semibatch Reactor

Moles of product and selectivity versus reaction time in a semi-batch reactor

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Series Reactions in a Batch Reactor

Concentrations versus time for series reaction in a batch reactor

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Transient Material Balances

This simulates a reactor in real-time, with an inlet stream, outlet stream, and a chemical reaction in the tank. The conditions in the reactor are plotted in real-time.

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Virtual Catalytic Reactor Laboratory

N/A

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Adiabatic PFR with Recycle

Temperature versus distance down an adiabatic PFR with recycle

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Autothermal Reactor

Temperature versus reactor length for exothermic reaction in packed bed with feed preheat.

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Batch Reactors at Constant V or P

Conversion versus time in isothermal batch reactors at constant pressure or volume.

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Concentration and Temperature vs Residence Time in Adiabatic Reactors

Concentration and temperature versus the residence time for both types of adiabatic reactors.

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Concurrent and Cocurrent Cooling in Tubular Reactors

Thermal runaway for an exothermic reaction in a PFR with cooling

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Construct an x-T Diagram for a Reversible Reaction

Construct conversion versus temperature plot in an adiabatic PFR

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CSTR That Loses Cooling

Cooling failure in a CSTR with cooling jacket

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Density Change Cannot be Ignored in a PFR

Effect of ignoring density change in an isothermal PFR

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Effect of Tube Diameter PFR

Exothermic reaction in PFR with pressure drop and heat transfer through walls

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Equally-Sized Mixed Flow Reactors in Series vs. PFR

Compare concentration profiles for a PFR and CSTRs in series

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Estimating Kinetic Parameters from a Batch Reactor

Experimental data in a batch reactor are used to estimate reaction order and rate constant

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Ethane Pyrolysis in a Tubular Reactor

Isothermal pyrolysis of ethane to ethylene in a tubular reactor

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Fed-Batch Fermentation

Concentrations in a fed-batch reactor used for fermentation

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Michaelis-Menten Enzyme Kinetics and the Steady-State Approximation

Michaelis–Menten enzyme kinetics is a model for rate equations that has a closed-form solution for the concentrations of reactants and products in an enzymatic reaction.

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Minimized Volume for Reactors in Series

Reactor volumes for two isothermal reactors (CSTRs, PFRs) in series

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Numerical Methods for Differential Equations

This Demonstration shows the exact and the numerical solutions using a variety of simple numerical methods for ordinary differential equations.

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Parametric Sensitivity of PFR with Heat Exchange

Sensitivity of PFR conditions to feed temperature, activation energy, and feed rate

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Performance of a PFR with Recycle

Reaction rate in isothermal PFR with recycle as function of recycle ratio

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PFR with Heat Transfer Jacket

Temperature in PFR and in the heat transfer fluid in annular region as function of reactor volume

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Pharmacokinetic Modeling

Concentration of a drug in the body as a function of time for given dosing scheme

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Polymerization in a Batch Reactor

Number and weight fraction of polymer versus number of monomer units for batch reactor

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Pressure Drop in a PBR

Two isothermal PFRs with same pressure drop but different lengths

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Reaction in an Adiabatic CSTR

Conversion and temperature for a liquid phase reaction in an adiabatic CSTR

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Reaction in an Isothermal CSTR

Outlet concentrations from an isothermal CSTR as a function of residence time

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Reactor Design Economics

Monetary profit as function of CSTR or PFR volume

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Reactor Rate and Conversion vs. Space Velocity

Rate of reaction and conversion versus space velocity for isothermal PFR

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Reactor with Recycle Stream

Mass balances on a reactor with separation and recycle

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Sensitivity of PFR to Model Parameters

Sensitivity of temperature and flow rates in a non-isothermal PFR to changes in feed conditions and parameter values.

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Temperature-Programmed Desorption

Rates vs temperature or time for temperature-programmed desorption

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Two-Dimensional Model of Adiabatic Fixed-Bed Membrane Reactor

Dehydrogenation reaction in a two-dimensional tubular adiabatic fixed bed catalytic membrane reactor

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Volumetric Flow Rates in a PFR

Animation of control volume moving through an isothermal PFR

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