Chemical Reaction Engineering

The Eight Steps to Specify a Catalyst Bed

AIChE Webinar
Live Wednesday, November 12, 2014, 2:00pm-3:00pm EST
This webinar outlines the eight basic steps in specifying a hydro-genation catalyst: performance specification, process configuration, catalyst...

Assessing Thermal Stability - the Challenge of Powders

AIChE Spring Meeting and Global Congress on Process Safety
Mar 31, 2014
Assessing the thermal stability of process materials and mixtures is an essential step in understanding the process safety profile of a process. Many...

Detail Analysis of Caustic Tower Fouling Mechanism

AIChE Spring Meeting and Global Congress on Process Safety
Mar 31, 2014
To ensure the successful chemical treatment of a caustic system, fouling mechanisms must be identified and their respective contributions to the...

Introduction to Fluidized Bed Technology

AIChE Webinar
Apr 13, 2011
This webinar explores the fundamentals of fluidization: how materials fluidize; differences in fluidization characteristics based on size and density...

Liquid Product of Liquid Phase Pyrolysis

Forest Bioproducts Division Webinar
Feb 10, 2010
Ligno-cellulosic feed is expected to contribute significantly to production of liquefied combustibles in the future, because of the quantity and the...

Shortcut Methodology in Pilot Plants

AIChE Spring Meeting and Global Congress on Process Safety
Apr 29, 2009
This session is devoted to short cut methods in pilot plants, including enhanced experimentation, multi-throughput methods, and use of modeling to...

CEP: Journal Highlight - A Path Toward the Perfect Chemical Reactor

October
2014
Journal Highlight
The ability to control chemical reactions to efficiently and selectively produce the desired products has vastly improved over the past decades, with increasingly sophisticated techniques now available to dictate the outcome of these reactions. While much progress has been made, much more is needed to realize a perfect reactor, which would allow for full control of chemical transformations at the molecular level. In the October AIChE Journal Perspective article, “Practical Challenges in Energy-Based Control of Molecular Transformations in Chemical Reactors,” Andrzej Stankiewicz, Izabela Szydłowska Franssen, Daniel Irimia, and Georgios Stefanidis of Delft Univ. of Technology expand on this topic of molecular control in chemical reactors.

Green Reactors

August
2008
Reactions and Separations
Mukesh Doble
Compare these microreactor technologies, along with the intrinsic advantages and disadvantages of miniaturization, to achieve process intensification.

Developing Crystallization Processes

March
2011
Reactions and Separations
Christianto Wibowo
With solid-liquid equilibrium as its foundation, this systematic approach makes it easy to identify operating regions and theoretical yield to maximize the desired product.

Chemical Reactivity Hazard Training CD-ROM

May, 2006
The Chemical Reactivity Hazards CD is a self-paced teaching tool intended to teach people how to recognize and manage reactive chemical hazards. It provides an introduction to the topic and many online links to additional resources. The CD has three main objectives: Introduce reactive chemical...

Apply an Integrated Approach to Catalytic Process Design

February
2007
Reactions and Separations
James Nehlsen, Mitrajit Mukherjee, Richard V. Porcelli
To ensure a practical, efficient and economically viable process, first consider how a successful catalytic reaction system would work, then focus on making a catalyst with the desired characteristics.

A Hybrid Route to Chirally Pure Products

November
2005
Reactions and Separations
Christianto Wibowo , Lionel O'Young
Chromatographic resolution coupled with crystallization can be your best option for manufacturing chirally pure products.

Graphically Assess a Reactor's Characteristics

March
2006
Reactions and Separations
David Glasser, David Milne, David Glasser, Diane Hildebrandt and Brendon Hausberger
Use this technique to analyze reactor/reaction systems for which dependable kinetic data are available, or to quickly find the operating characterisitics needed for the maximum selectivity of a reactant.

Fundamentals of Industrial Catalytic Processes, 2nd Edition

October, 2005
Catalysis is central to the chemical industry, as it is directly or involved in the production of almost all useful chemical products. In this book the authors, present the definitive account of industrial catalytic processes. Throughout Fundamentals of Industrial Catalytic Processes the...

Predictive Modeling in Catalysis - From Dream to Reality

June
2009
On The Horizon
Ana G. Maldonado
In silicocatalyst optimization is the ultimate application of computers in catalysis. This article provides an overview of the basic concepts of predictive modeling and describes how this technique can be used in catalyst and reaction design.

Simulating Aqueous Processes

September
2003
Reactions and Separations
Joel B. Christian
Simulation that includes aqueous modeling can also account for full vapor/liquid/solid equilibria modeling, including redox chemistry.

Estimate the Capacity of Simple Batch Processes

August
2002
Reactions and Separations
James L. Manganaro
Finding the throughput of a multiple-unit, multiple-step operation, even when it is relatively uncomplicated, is not always an easy matter. Several equations and graphical aids are provided to help determine yearly capacity.

Form Nanoparticles via Controlled Crystallization

October
2008
Reactions and Separations
Robert J. Fisher, Thomai Panagiotou
This continuous bottom-up approach allows precise control of the crystallization process to achieve size, distribution and quality goals, as well as realize the benefits of process intensification.

Computationally Evaluate Self-Reactivity Hazards

February
2003
Reactions and Separations
Edward S. Shanley, Michelle R. Murphy, Surendra K. Singh
Here is a method that rates the tendency of new compounds to self-explode without the need to perform extensive laboratory tests.

Bioreactor Design for Chemical Engineers

August
2011
Back To Basics
Gregory T. Benz
Fermentation processes are based on chemical engineering principles. Understand these concepts to achieve optimal bioreactor design.

Guidelines for Crystallizer Selection and Operation

October
2004
Reactions and Separations
Wayne Genck
Continuous crystallizers serve a wide range of applications in the chemical process industries. Optimize system performance by heeding these practical design and operating principles, which apply to the forced circulation (FC), draft-tube-baffle (...

Modeling Reactive Absorption

January
2009
Reactions and Separations
Eugeny Kenig, Panos Seferlis
Effective modeling of reactive absorption enhances system design, improves experiment planning for parameter-estimation, and facilitates process operation and control decisions.

Put More Punch Into Catalytic Reactors

March
2003
Reactions and Separations
Ed Fontes, Olof Hernell, Phil Byrne
Using equation-based modeling to design these reactors can optimize their efficiency and throughput.

Understand Flow Patterns in Glass-Lined Reactors

November
2004
Reactions and Separations
Christopher J. Ramsey, David S. Dickey, Keith E. Johnson , Kevin J. Bittorf
Physical modeling and computer simulation provide insights into the performance of a glass-lined reactor.

Optimize Power Consumption in Aerobic Fermenters

May
2003
Reactions and Separations
Gregory T. Benz
By performing the necessary pilot work, and rigorously calculating the full-scale performance instead of using simple rules-of-thumb, significant energy savings can be achieved in fermenters.

Scaling Fixed-Bed Catalyzed Processes

March
2007
Reactions and Separations
Jonathan H. Worstell
The new parameter introduced here will yield more meaningful results when a fixed-bed reactor is scaled up for process development or scaled down for plant support.

Select the Right Spray Nozzle

June
2001
Reactions and Separations
Peter  Welander, Terra L. Vincent
Finding the proper nozzle for specific applications doesn't have to be difficult. By applying basic concepts of nozzle technology, you can create a droplet profile that best suits your needs.

Reshaping the Structure of Fluidized Beds

July
2009
Fluids and Solids Handling
J. Ruud van Ommen, John Nijenhuis, Marc-Olivier Coppens
Adding structure to a gas-solid fluidized-bed reactor changes the system’s hydrodynamics and can improve performance.

Optimizing Crystallizer Scaleup

June
2003
Fluids and Solids Handling
Wayne Genck
Explore how mixing parameters impact the crystallization process and recommend ways to improve the likelihood of successful scaleup. The concepts of nucleation and growth, types of mixing, design considerations, agitator parameters and scaleup...

Selecting Laboratory Reactors

August
2007
Reactions and Separations
Francesco Picciotti, Marcello Picciotti
This article outlines some of the considerations involved in selecting and specifying a reactor system for research and development applications.

Understand the Real World of Mixing

March
2010
Back To Basics
Thomas Post
Most chemical engineering curricula do not adequately address mixing as it is commonly practiced in the chemical process industries. This article attempts to fill in the gaps by explaining flow patterns, mixing techniques, and the turbulent,...
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