AIChE | The Global Home of Chemical Engineers

Spray Dryers: A Guide to Performance Evaluation, 2nd Edition

August, 2004
Spray Dryers: A Guide to Performance Evaluation, Second Edition discusses the reasons for spray drying. These reasons are usually to produce a product with certain desired properties or with better efficiency than other methods. The book discusses how to plan in light of these objectives and gives...

Dow's Fire & Explosion Index Hazard Classification Guide, 7th Edition

June, 1994
This popular safety best-seller is designed to help the user quantify the expected damage of potential fire and explosion incidents in realistic terms, identify the equipment likely to contribute to the creation or escalation of an incident, and communicate the fire and explosion risk potential to...

AIChE Equipment Testing Procedure - Particle Size Classifiers, 2nd Edition

June, 1993
This procedure offers complete methodologies for sampling and measuring particle streams and summarizes methods of particle size analysis. It also lists operating variables to be considered and measured. Although the procedure is intended specifically for particle classification equipment, many of...

The Case for Double Mechanical Seals

June
2009
Back To Basics
Jack Berg
Using double mechanical seals as part of thermoplastic pumps can prevent costly downtime and environmental damage.

What Will Happen to the Balloons?

June
2012
Editorial
Cynthia F. Mascone
They might be more expensive, but there’s probably no need to cancel your party plans just yet. “There’s lots of helium out there” says John Van Sloun, general manager — worldwide helium at Air Products, “but very little of it is being captured because the economics of doing so are not favorable.”

The Chemical Industry Phoenix

June
2012
Process Automation Corner
Terry McMahon
Seven years ago, I wrote a column for another publica­ tion entitled “The U.S. Chemical Industry: R.I.P.” This pillar of American economic strength, which a few years earlier was the leading exporter among U.S. manufac­turing sectors (with net exports of $15–20 billion annually), was shriveling due in large part to policy blunders and regula­tory mistakes.

Nitrogen — Hazard and Safeguard

June
2012
Process Safety Beacon
This Beacon is not focused on a single incident, but on incidents that continue to occur across industry — nitrogen asphyxiation.

Minimize the Risks of Flammable Materials

April
2012
Back To Basics
Daniel A. Crowl
Flammable materials can cause fires and explosions if they are not handled properly. Understanding these materials and the risks they pose is the first step to mitigating fire hazards.

Harness Electricity to Operate Valves

June
2012
Back To Basics
Justin Ledger
Actuators automate valves by converting an input signal into motion. This article explains the basics of electric actuator design and explores the different types of electric actuators.

Mohsen Almajnouni: Progress is a Process

June
2012
Profile
For Almajnouni, Process Domain Manager at Saudi Basic Industries Corp. (SABIC) and long-time chair of AIChE’s Saudi Arabia Local Section, progress is a byword in a life shaped by the will to embrace change.

Advance Your Career in 8 Words or Less

August
2002
Special Section
Kate Wendleton
A short, simple and concise message can be an effective way to let others know about your accomplishments and your worth.

Optimize Energy Use in Distillation

March
2012
Reactions and Separations
Douglas C. White
Nonlinearities in the response of a column to changes in operating conditions and in common economic valuation functions can have significant impacts on the economic optimum energy consumption for the column. Here’s a way to account for such...

Decoding Safety Data Sheets

June
2012
Safety
Ronald J. Willey
A safety data sheet holds a wealth of information that can help you safely and effectively handle chemicals in the lab, at the pilot scale, and on the production floor.

Reduce Unplanned Shutdowns

September
2003
Instrumentation
Cindy Scott
Today's intelligent devices are equipped with modern alarm technology that enables speedy delivery of critical information to key personnel, thus enhancing efficiency and minimizing downtime.

Physical and Chemical Equilibrium for Chemical Engineers

April, 2012
This book concentrates on the topic of physical and chemical equilibrium. Using the simplest mathematics along with numerous numerical examples it accurately and rigorously covers physical and chemical equilibrium in depth and detail. It continues to cover the topics found in the first edition...

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.

Capturing Carbon from Existing Coal-Fired Power Plants

April
2009
Special Section
Jared P. Ciferno, Timothy E. Fout, Andrew P. Jones, James T. Murphy
DOE's National Energy Technology Laboratory is spearheading R&D on a variety of post-combustion and oxy-combustion technologies to cost-effectively achieve 90% CO2 capture.

Ionic Liquid Pretreatment

March
2010
SBE Special Section
Harvey W. Blanch, Bradley M. Holmes, Blake A. Simmons, Seema Singh
Ionic liquids show promise as lignocellulosic biomass solvents. But is this approach a scientific curiosity or a commercially viable biofuel pretreatment technology?

Engineering a Healthy Body

September
2010
Career Catalyst
Nick Hallale
These basic chemical engineering principles expose common weight loss myths and show you how to get into better shape efficiently and sustainably.

Chemical Engineering Perspectives on Vaccine Production

November
2011
SBE Special Section
John G. Aunins, Michael E. Laska, Jose M. Otero, Bret R. Phillips
Fundamental chemical and bioprocess engineering principles and tools will be key to developing and manufacturing vaccines and expanding their availability around the world.

Keeping Global Teams Going

February
2002
Career Catalyst
Lionel F. Laroche
Global teams can maintain their effectiveness by using the right communication tools, following good communication practices, working at building and maintaining trust, and taking cultural differences into account.

Use Sustainability Metrics to Guide Decision-Making

July
2002
Environmental Management
Beth R. Beloff, Earl  Beaver, Jeanette M. Schwarz
Sustainability provides a framework for integrating environmental, social and economic interests into effective business strategies.

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.

Conduct Successful Team Meetings

November
2003
Career Catalyst
Barry M. Weinstein
Prepare effective agendas, minutes, status updates, and corrective action reports to make your meetings, as well as your projects, run more smoothly.

Getting Your Message Across

May
2004
Career Catalyst
Margaret Clarke Hunt, Denise Price Hosier
Engineers play an important role in the marketing of products, processes and services. Here's a short course on the basics of marketing communications to help you be effective in that role.

Consider Using Fluoropolymers in Biological Applications

December
2004
Materials
Lauri Jenkins, Sharon Libert, Victor Lusvardi
Even with the use of costly corrosion-resistant alloys, metal contamination continues to occur in the biologics industry, thus reducing product yield and activity. Fluoropolymers are emerging as a viable solution to this problem.

Right-Sizing Environmental Controls

June
2006
Environmental Management
E. Joseph Duckett
Size does matter - and bigger is not necessarily better when it comes to pollution control. It is more important to be the right size than the largest size.

Selecting Agitator Seals for Bioprocessing Applications

January
2008
Fluids and Solids Handling
Gregory T. Benz, William Ho Liam Teng
Issues such as sterility, isolation and contamination must be considered when choosing seals for use in biotech and pharmaceutical processes. This overview describes common types of seals and offers guidance on selecting the appropriate seal for...

Principles of Bioprocess Control

November
2009
SBE Special Section
Joseph S. Alford
The use of complex living organisms, process variation, and lack of real-time measurements of key parameters are some of the challenges involved in automating a bioprocess. This article explains an indirect approach to monitoring and controlling a...

Gazing into an Energy Crystal Ball

June
2010
On The Horizon
Vern W. Weekman Jr.
By mid-century, new energy sources could be integrated into the existing chemical-conversion infrastructure, but additional research is needed to fine-tune the technologies and improve efficiencies and economics.

Use Nitrogen Safely

March
2012
Safety
Dennis Croll, Paul Yanisko
Understanding the potential hazards and taking the proper precautions will allow you to reap such benefits as improved product quality and enhanced process safety.

Controlling Emissions During Cold Furnace Startup

February
2007
Environmental Management
Wes Bussman, Jianhui Hong, Charles E. Baukal Jr., Richard T. Waibel
High carbon monoxide emissions from a furnace while its temperature is being ramped up can exceed permit limits if appropriate measures are not taken. Here are a few suggestions.

Propel Your Pneumatic Conveying System to Higher Efficiency

April
2001
Fluids and Solids Handling
Francisco  Cabrejos, Herman  Purutyan, Thomas G. Troxel
For new and existing installations, there are many system and component choices available. Here’s how to narrow down the options to make the appropriate selection for optimal performance.
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