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AIChE | The Global Home of Chemical Engineers

Successfully Scale Up Solids Handling

April
2008
Fluids and Solids Handling
K. Eric Bengtson, John W. Carson, Thomas G. Troxel
A sound theoretical model of the process to be scaled is the best approach; if one is not available, bench-scale testing, physical scale modeling or full-scale modeling is required. Here are guidelines as to which method is appropriate for various...

Realistically Predict Capacity and Pressure Drop for Packed Columns

July
2007
Reactions and Separations
Emil Abkar, Khashayar Afshar, Henry Z. Kister, Jeffrey Scherffius
Generalized pressure-drop correlation (GPDC) charts have been the standard for predicting packing flood points and pressure drops. This article guides engineers on the correct and incorrect uses of the GPDC interpolation procedure, and updates the...

The Hydrogen Economy Is Coming - The Question is Where?

December
2005
On The Horizon
Charles W. Forsberg
The end of the oil age is coming. While the replacements for oil are uncertain, the leading candidates have one thing in common — the need for massive quantities of hydrogen in the production process.

Apply an Integrated Approach to Catalytic Process Design

February
2007
Reactions and Separations
Mitrajit Mukherjee, James Nehlsen, 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.

Applying the Paradigm Case Method for Flowmeter Selection

September
2006
Fluids and Solids Handling
Jesse Yoder
This effective approach to flowmeter selection involves a step-by-step method that begins by matching the application with the flowmeter(s). Then, a series of criteria are applied to narrow the selection.

CEP: Profile - A Chemical Engineering Powerhouse

February
2013
Profile
I like to think of myself as an engineer with an ability to bring various disciplines together to tackle tough challenges,” says Narayan Ramesh, Associate R&D Director at Dow Solar, and recipient of AIChE’s inaugural Industrial Progress Award...

Improve Safety by Improving Human Performance

August
2006
Safety
Donald K. Lorenzo
Follow these guidelines to identify situations in which human errors are likely to occur and to correct potential problems early enough to avoid adverse consequences.

Fuel Cells, the Hydrogen Economy and You

November
2007
On The Horizon
Herbert W. Cooper
Chemical engineers will play an important role in the development and deployment of fuel cells. This primer summarizes some of the key technical and economic issues that must be overcome.

A Hybrid Route to Chirally Pure Products

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

ChemShow Experts Look to the Future

November
2009
News Feature
Matthew McKeon-Slattery
Industry experts share their opinions on what they consider to be important recent breakthroughs and what they predict will be next for the CPI.

CEP: Process Safety Beacon - Mechanical Integrity of Tubing

May
2012
Process Safety Beacon
Proper installation, maintenance, and inspection of metal tubing is important in preventing fires and toxic material releases in process plants. Do not forget about tubing just because it is usually small. Even a small leak can cause a fire that can...

Selecting Elbows for Pneumatic Conveying Systems

September
2007
Fluids and Solids Handling
Paul Wagner
The right elbow can keep your system operating at peak performance, reduce maintenance costs, and minimize material attrition and elbow wear. This article describes common elbows and outlines factors to consider when selecting one.

Cost Management in Heat-Transfer-Fluid Systems

July
2006
Heat Transfer
Conrad E. Gamble, P.E.
By taking ownership of fluid-related decisions for the entire life of the project, from design through dismantling, users can secure the best and lowest-cost approach in process heating and cooling.

Diagnosing Maldistribution in Towers

May
2007
Reactions and Separations
Simon X. Xu
Gamma CAT-scan technology makes possible the collection of much more vital online process information than conventional diagnostic techniques.

Assess the Performance of Positive-Displacement Pumps

December
2007
Fluids and Solids Handling
AIChE's Equipment Testing Procedures Committee
Here's how to evaluate rotary pumps— gear, lobe, vane and multiple-screw designs— regardless of whether the material being handled is a Newtonian or non-Newtonian fluid.

Addressing Energy Supply Vulnerabilities

April
2006
Critical Issues
Herbert W. Cooper
Can a mega-worldwide energy interruption occur? The perfect storm may be brewing with such events as natural disasters, acts of terrorism and international disputes. This article explains how your company can prepare to effectively handle an energy...

Beware of the Dangers of Cold Traps

February
2013
Safety
James R. Risko
Cold traps — steam traps that no longer drain condensate — are often ignored in lieu of less-critical leaking traps, until a catastrophic event, such as a plant shutdown or personal injury, occurs. Use historical data to accurately estimate the annual cost of these cold traps to justify their swift repair.

Product Digest - Safety Equipment

May
2012
Product Digest
Check out warning devices for hazardous areas and high-visibility work vests that reduce static electricity.

CEP: News Update

January
2013
News Update
Global Relationships Take Center Stage at the 2012 Annual Meeting; No Boiling Needed: Nanoparticles Convert Sunlight into Steam; Hydrogen Power Goes Mobile; Carbon Nanotubes Team Up with Graphene; New Process Brings Bendable Electronics Closer to Reality; and more.

CEP: Institute News

January
2013
Institute News
President’s Corner New Fellows Member News Calendar

Global Relationships Take Center Stage at the 2012 Annual Meeting

January
2013
News Feature
In support of its strategic mission to become a global organization of chemical engineering practitioners, AIChE hosted three joint international symposia at the 2012 AIChE Annual Meeting held in Pittsburgh, PA, Oct. 28 to Nov. 2. AIChE joined with...

AIChE Journal Highlight: An Engineering Roadmap for Biorefining

January
2013
Journal Highlight
In the January AIChE Journal Perspective article, “Engineering Biomass Conversion Processes: A Systems Perspective,” Univ. of Minnesota researchers Prodromos Daoutidis, W. Alex Marvin, Srinivas Rangarajan, and Ana Torres discuss the challenges,...

CEP: Material Matters - A Better, Faster Way to Test FRP

January
2013
Material Matters
Kirk Richardson
Users of fiber-reinforced plastic (FRP) in the chemical process industries (CPI) have long recognized the limitations of the test protocol currently used to determine material compatibility, ASTM C581, Standard Practice for Determining Chemical...

Shale Gas Brightens Outlook for U.S. Chemicals

January
2013
Chem Economics
Martha Gilchrist Moore, T. Kevin Swift
The chemical industry will experience moderate annual growth over the next few years — ranging between 2.2% and 4.6% through 2017. The higher growth rate accounts for new investments announced in response to the abundant supply of shale-based...

CEP: YPOV - “A journey of 26.2 miles begins…”

January
2013
YPOV
May Shek
The new year brings the excitement of setting new goals. I have learned my best lessons on goal setting from one of my hobbies, running — and what I’ve learned can be applied to professional goals as well.

Optimizing an Organic Rankine Cycle

January
2013
Heat Transfer
Ali Bourji, P.E., Alan Winstead
An organic Rankine cycle (ORC) system can be a cost-effective way to convert waste heat to electricity. The key is finding the best ratio of net power recovery to capital cost.

Six Steps to Effectively Update and Revalidate PHAs

January
2001
Safety
David K. Whittle, Kevin  Smith
Process hazard analyses must be revamped — or redone from scratch — every five years by law. Following the guidance given here will facilitate this effort.

Before OSHA Comes Knocking ...

March
2009
Safety
Daniel Steinway
The OSHA Process Safety Management National Emphasis Program will soon apply to the chemical industry, targeting compliance with safety standards associated with chemical hazards.

Use Guided-Wave Radar to Measure Water Level in Steam Loops

December
2012
Back To Basics
Ravi Jethra, Keith Riley
Guided-wave radar (GWR) is a useful tool for measuring water level in steam loops. This article describes GWR design and operation, and how this technology differs from more traditional forms of level indication.

Reshaping Process Safety Regulations

March
2002
Safety
Walter L. Frank
Changes to OSHA's PSM rule and EPA's RMP programs are underway, due to pressures from various groups and the need for greater security.

CEP: Institute News

December
2012
Institute News
2012 Annual Meeting; President’s Corner; Divisions and Forums Present Honors; Election Results; Member News; Calendar

CEP: Editorial - The Invention that Wasn't

November
2012
Editorial
Cynthia F. Mascone
On the first day of our visit to Walt Disney World, my then-seven-year-old son got lost in the Magic Kingdom. Luckily, he was somewhere on Tom Sawyer Island, so our search area was limited. On the second day, he wandered off in the Honey, I Shrunk the Kids attraction (also an enclosed space, thankfully). Those experiences gave me an idea for what I called Kid LoJack — a biocompatible microchip that parents could inject under a baby’s skin, and later activate to locate the child if he or she got lost or kidnapped (or stayed out past curfew). I’ve often wondered — civil liberties issues aside — whether I could have patented such a device.

CEP: Update

December
2012
News Update
Oxide Catalysts Get Selective; New Catalyst Challenges Platinum; Quick-Release Tape Peels with Ease; Electronic Skin Mimics the Human Epidermis

CEP: Process Safety Beacon - Good Housekeeping for Safety

December
2012
Process Safety Beacon
A fire started in a fiber trash drum in a process building. The drum contained solder flux and paste, welding debris, general trash, and oil-soaked rags. It had not been emptied for a long time. The ignition source may have been hot welding debris...

Developing Safety Standard for Pilot Plants

October
2006
Safety
Richard P. Palluzi
Safety standards can significantly improve pilot plant safety and increase efficiency. This article addresses many of the issues involved in developing, deploying and using such standards.

Engineering Complex Phenotypes in Industrial Strains

November, 2012
This book explains current trends and developments in engineering biocatalysts for the production of bulk chemical and biofuels from renewable biomass. The authors guide readers through the engineering of the complex traits and phenotypes needed for particular biocatalysts and bioprocesses.

ONE-STEP FERMENTATIVE PRODUCTION OF POLYLACTIC ACID

May
2012
SBE Special Section
Min Kyung Kim , Sang Yup Lee, Si Jae Park
The use of PLA has been hindered by its complex and expensive synthesis process. A new technology promises to change this — giving PLA a chance to compete with fossil-based plastics.

Cut Agitator Power Costs

November
2012
Back To Basics
Gregory T. Benz, P.E.
Agitator power consumption can be minimized by judicious equipment selection and careful operating procedures. Follow these guidelines to reduce your plant’s energy costs. In some cases, it may be as simple as flipping a switch.

CEP: Institute News

November
2012
Institute News
WISE Interns Annual Meeting "Best Papers" Connie Carroll Memorial Award Calendar

CEP: Spotlight on Safety - LOPA — A Valuable Risk-Reduction Tool

November
2012
Spotlight on Safety
John F. Murphy, P.E.
Layer of protection analysis (LOPA) is a simplified process risk-assessment technique that uses order-of-magnitude estimates for initiating events, consequence severity, and likelihood of failure of independent protection layers (IPLs) to approximate the risk of a scenario. It is generally used after a process hazard analysis (PHA) team has identified a hazard scenario that requires further analysis to ensure the adequacy of the safeguards that exist or are being proposed.

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