AIChE | The Global Home of Chemical Engineers

Reduce Costs with Dividing-Wall Columns

May
2002
Reactions and Separations
Dennis O'Brien, Douglas A. Stewart, James W. Harris, Michael A. Schultz, Mohamed S.M. Shakur, Steven P. Rosenblum
These distillation columns can significantly reduce capital and energy expenses vs. conventional multicolumn arrangements.

Can We Believe the Simulation Results?

October
2002
Reactions and Separations
Henry Z. Kister
Be careful of these key issues that may generate differences between a distillation-tower simulation and its actual performance. Simulations do not always square with nuts-and-bolts reality.

Working with Non-Ideal Gases

March
2003
Fluids and Solids Handling
Jimmy Peress
Here are two proven methods for predicting gas compressibility factors.

Apply Solubility Theory for Process Improvements

March
2004
Reactions and Separations
Michael J. Gentilcore
For solid compounds that dissolve in solvents but do not ionize, the thermodynamics of solubility can provide valuable predictions and insights.

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.

Apply Process Integration to Environmental Impact Assessment

February
2009
Environmental Management
Ahmed Abdel-Wahab, Hassan E. Alfadala, Mahmoud M. El-Halwagi, Patrick Linke, Eva M. Lovelady
This approach provides valuable insights early in the design process and systematizes the design effort, while reconciling process objectives with environmental constraints.

Reshaping the Structure of Fluidized Beds

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

The Reference Process Demystified

January
2010
Career Catalyst
Lisa L. Walker
The people you identify as references in your job search act as your ambassadors to a potential employer. Choosing references who can paint a clear picture of your strengths and potential can be a decisive advantage in your employment campaign.

Minimize Mechanical Integrity Budget Battles

February
2011
Safety
Jack McCavit, Daniel A. Long, P.E.
Chemical processing and manufacturing plants must ensure the mechanical integrity of their equipment. These strategies and tactics can make doing so easier when budget issues arise.

Understand Thermodynamics to Improve Process Simulations

December
2011
Computational Methods
David Hill, Fred C. Justice, P.E.
Selecting a thermodynamic model is an important step in process simulation — one that many engineers overlook. This overview of applied thermodynamics can help you choose the right model for your process.

Size Letdown Lines for Pressure Surges

November
2001
Fluids and Solids Handling
Gianni  Anci
A high-pressure gas flow in a letdown circuit can cause damage to piping and equipment. Here is how to design a system to avoid damage should a pressurized gas flow occur GianniAnci-

How to Scale-Up Mixing Processes in Non-Newtonian Fluids

May
2003
Fluids and Solids Handling
Christopher Henry , Robert J. Wilkens,  Lew E. Gates
This article will describe the relationships that must be understood to scale-up fluid mixing processes in non-Newtonian, power-law fluids. The principles described apply to both close-clearance impellers, such as anchors and helixes, and to open...

The G-Value for Agitator Design: Time to Retire It?

March
2007
Fluids and Solids Handling
Gregory T. Benz
This commonly used number does not correctly address the influence of viscosity, and has no relationship to performance parameters such as fluid velocity and blend time. This article recommends actual measures of agitator performance that should be...

Deciphering the Mechanisms of Therapeutic Protein Production

October
2007
SBE Special Section
Daniel W. Allison, Christoph L. Bausch, Trissa Borgschulte, Matthew V. Caple, Kevin J. Kayser
Demand for therapeutic recombinant proteins will eventually exceed current production capabilities. This is a major driver in further understanding Chinese Hamster Ovary (CHO) cell biology, which is the cell line of choice for producing these...

Choose the Right Elastomer

June
2008
Materials
William M. Stahl
Match a material's performance to process conditions to reduce leaks, improve safety and extend the mean time between failures (MTBF).

Overcoming Obstacles to Innovation

September
2010
Management
Mukund Karanjikar, Jeff Lindsay, Cheryl Perkins
Despite high levels of spending and lofty innovation goals, companies often experience declining productivity. An understanding of the causes and remedies for innovation fatigue can free engineers and their organizations to achieve greater success.

Use LinkedIn to Advance Your Career

March
2012
Career Catalyst
Loraine Kasprzak
LinkedIn - the social media tool most often used by professionals - allows you to establish an online presence, connect with others, and find business and job opportunities.

Checking Out the Competition

August
2001
Management
Gary  Street
Develop a winning game plan by following these logical steps to competitive assessment.

Achieving Success

December
2001
Career Catalyst
Slava Thaler
Put these seven principles to work to spell success for your professional and personal life.

Track Condenser Performance

February
2003
Heat Transfer
Brad Buecker
An effective monitoring program can extend equipment life, improve operations, and yield substantial energy savings.

Get Your Investment Decisions Right

February
2006
Management
Gerald Bode, Konrad Hungerbuhler, Gregory J. McRae, Reinhard Schomacker
This article describes state-of-the-art investment analysis techniques, shows how and why even reasonably good analyses can lead to bad decisions, and gives guidance on how to avoid mistakes when making investment decisions regarding chemical...

Incorporating Sustainability into Chemical Engineering Education

January
2009
Special Section
David T. Allen, Braden R. Allenby, Cliff I. Davidson, Cynthia F. Murphy
This benchmarking study of the types of courses offered and the material being taught sheds light on what the engineering profession regards as sustainability.

Disarming the Firing Squad

July
2009
Career Catalyst
Kate Wendleton
If thoughts of a layoff keep you up at night, stop wringing your hands and start taking action. Follow this 11-step plan to position yourself for success in these uncertain economic times.

Assessing Competency During the Hiring Process

December
2009
Career Catalyst
Lisa L. Walker
Interviews and references provide insight into what a job candidate has accomplished. Competency assessment helps the employer ascertain how an individual will actually think and behave on the job. <br> <br>

It’s a Gift: Make the Most of Holiday Job-Searching

December
2010
Career Catalyst
David Madison
It is a common misconception that the November–December holiday season is an unproductive time for job-hunting. Smart job seekers take advantage of the unusual opportunities that the season brings — to position themselves for holiday job-search...

Choose the Right Electric Motors for Hazardous Locations

November
2011
Back To Basics
Uriah Van Amerom
Risks associated with operating an electric motor in hazardous areas range from production downtime to injury and death. Learn how to assess the operating environment and select the appropriate motor.

Inhibiting and Monitoring Corrosion

March
2012
Heat Transfer
Gary Geiger, Mel J. Esmacher, P.E.
Understand corrosion and ways to control it, and implement these monitoring techniques to improve cooling water system efficiency and reliability and reduce energy consumption.

Succeed in Business in the Far East

January
2001
Career Catalyst
Lionel F. Laroche, Susan Morey
Understand what is expected of you when traveling to this burgeioning part of the world.

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.

Get More Out of Single-Stage Distillation

February
2002
Reactions and Separations
Ernest A. Perkins , Ryan C. Schad 
Try these practical ways to boost capacity, increase product quality or reduce cycle time in batch and continuous systems.

Ease Control Valve Selection

November
2002
Fluids and Solids Handling
Kiran Nair, Liyakat Jaffer, Meredith Chapeaux, Sheetal Patel, Trevor Bishop
With so many types and options available, choosing the right control valve can seem daunting. Selection can be simplified by considering the process fluid, the service requirements, how the various valves function, and seeing how each valve will...

Stay Ahead of Time

October
2003
Career Catalyst
Judi  Hampton
These tips will help you develop time management and delegation skills to make you more efficient and more effective in your job.

Collect and Destroy Emissions Safely

May
2004
Environmental Management
Tony Ennis
Vent collection and destruction systems are complex, and their safety depends on the proper integration of the discrete elements. This article provides guidance on how to achieve that.

Launching a Website for Your Small Business

November
2004
Career Catalyst
Cynthia F. Mascone, Joseph A. Roseti
Here’s how to develop a successful Internet presence without the dedicated web staff and financial resources of a large corporation.

Modeling Accidental Releases

November
2005
Environmental Management
Weiping Dai
This article compares several common dispersion models available in the public domain and offers guidance on selecting the appropriate one for a particular release.

Optimizing the Asset Management of Pumps

May
2006
Asset Management
Mark Granger, Deane Horn
Integrating new advances in smart online pump monitoring and flexible communication technologies can improve pump reliability and performance while reducingcosts.

Improve Catalytic Oxidizer Operation

January
2007
Environmental Management
John C. Bonacci
A catalyst guard bed is a simple, low-cost modification that reduces catalyst-replacement costs, saves natural gas and cuts energy expenses.

Avoid Common Pitfalls When Using Henry's Law

September
2007
Environmental Management
Allan H. Harvey, Francis L. Smith
Here is practical guidance on the use of Henry's law in engineering calculations and how to account for the temperature dependence of the Henry's constant— which is often ignored but which can be crucial for accurate process design.

Evaluating the Risks and Rewards of an Expatriate Assignment

March
2010
Career Catalyst
Lisa L. Walker
The global chemical industry is showing particularly strong growth outside North America. Understanding where opportunities exist — and which are worth taking — can help you decide whether it is time to take your career, and your life, on the road.

Getting Started in Social Media

January
2012
Career Catalyst
Loraine Kasprzak
Engineers can derive professional benefits from Facebook, LinkedIn, Google+, Twitter, and other social media. Here is some practical advice on using these tools effectively, whether you are a veteran or a relative novice.

Analyzing APC Performance

August
2002
Instrumentation
To reap the most benefit from an advanced process control (APC) system, users need to know how to analyze and monitor the APC's performance.

Integrating Single-Use Filtration Systems

January
2003
Special Section
Holly Haughney
Disposable filtration systems are gaiing popularity in the pharmaceutical arena. This article defines the equipment, specifications, applications and potential advantages of single-use filters and ancillary equipment.

Achieve Best-in-Class Reliability

June
2003
Asset Management
Richard  Beck
An integrated enterprise asset performance management system can help companies to eliminate failures, optimize strategies, and meet intended production targets.

Dynamic Capacity Modeling of Product Development

July
2004
Information Technology
Prashant B. Kokitkar, Brian E. Hartman, Jospeh S. Alford Jr.
Avoid large work queues by proactively anticipating the resource needs of your company using dynamic capacity models.

Adopt Integrated Product Teams for Process Development

July
2005
Management
Jeffrey Mueller, Larry Scotchie, Kelly Seheult
The cross-functional IPT approach can be combined with a stage-gate framework and six sigma techniques to improve the effectiveness of process development efforts.

Team Up with a Consultant for Process Equipment Selection

August
2006
Career Catalyst
Gregory T. Benz
Engineers who specify, scale up or purchase process equipment typically have fewer internal or vendor resources available than in the past. This article explores the problem and offers a solution.

Taming Intrapersonal Pirates of Performance

December
2008
Career Catalyst
Saidas M. Ranade
Don’t let preconceived notions, preoccupation, and poor perception plunder your progress. These exercises will show you how to scuttle these scallywags, and make teamwork smooth sailing.

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