AIChE | The Global Home of Chemical Engineers

CEP: News Update

May
2013
News Update
Artificial Organs Hot Off the Press; Biofuel Byproducts and Concrete Mix It Up; Squid Inspires Material for Medical Implants; Polymer Chains Line Up to Provide High Performance; Ribbons of VO2 and Graphene Enable Ultrafast Batteries; and more.

CEP: Profile - An Engineer Who Embraces Risk

May
2013
Profile
An entrepreneur is someone with a certain attitude — a mindset — a way of looking at the world,” reflects Loraine Huchler, winner of the 2012 Society of Women Engineers’ (SWE) Entrepreneur Award. Huchler, founder and president of MarTech Systems, Inc...

Selecting Flowmeters to Minimize Energy Costs

May
2013
Instrumentation
Greg Livelli
Choosing a flowmeter with a low permanent pressure loss can reduce pump or compressor work requirements and increase steam boiler capacities — thereby trimming annual energy costs.

Determining Torque Split for Multiple Impellers in Slurry Mixing

February
2012
Fluids and Solids Handling
Gregory T. Benz, P.E.
Yield-stress slurries, such as those used in paper, biofuel, and polymer production, can be difficult to mix. This article explains how to determine torque requirements for multiple-impeller slurry-mixing systems to optimize tank geometry and...

CEP: Patent Update - An Invention's Nonobviousness May Not Be Obvious

April
2013
Patent Update
M. Henry Heines
To qualify for a patent, an invention must be both novel and nonobvious. Novelty requires that the invention differ in some way from the prior art, such as earlier patents and published materials. Nonobviousness requires that there be more than just...

CEP: Update

May
2006
News Update
Bioprocessing Systems Go disposable: Single-use disposable technology is gaining acceptance in the bio-pharmaceutical arena, especially with processors seeking to reduce their operating costs and add flexibility to their manufacturing schemes...

Introduction to Drug Delivery Technology

March
2013
SBE Special Section
John T. Santini, Jr.
Drugs can be administered by many routes, yet all emerging drug delivery technologies aim to improve drug efficacy, minimize side effects, and reduce the burden of care for patients and physicians.

CEP: Institute News

April
2013
Institute News
2013 Election Slate Spring Meeting Keynote Speaker Member News Calendars

Engineering Biodegradable Nanoparticles for Drug and Gene Delivery

March
2013
SBE Special Section
W. Mark Saltzman, Junwei Zhang
Engineered nanoparticles can deliver therapeutic agents to specifically targeted cells and then release those agents in a precisely controlled manner. Improved pharmacokinetic properties, reduced toxicity, and the ability to cross biological barriers are some of the key benefits of this approach.

CEP: News Update

April
2013
News Update
News Feature: Graphene Marches Down a Long Road to Commercialization A Stretchable, Rechargeable Li-Ion Battery Makes its Debut Defects Strengthen Magnesium Alloys Gold Lights the Way to Quantum-Dot Solar Cells Japan Taps into Fire Ice A Phase-...

Selecting Baffles for Shell-and-Tube Heat Exchangers

February
2012
Heat Transfer
Salem Bouhairie
Baffles play a crucial role in regulating shellside fluid flow and improving heat transfer between shellside and tubeside process fluids. Here's how to choose the correct baffle to meet process requirements.

Coriolis: The Direct Approach to Mass Flow Measurement

March
2013
Back To Basics
Tom O’Banion
Coriolis meters eliminate the need to measure and correct for pressure, temperature, and density fluctuations to determine mass flowrate. Although their capital costs may be higher, they typically have a lower overall cost of ownership than other types of meters

Genetically Modified Crops

September
2005
Critical Issues
John Shave
Viewpoint #1 Regulate the Product, Not the Process by Gregory Conko Viewpoint #2 Not All Sugar & Spice

CEP: Update

March
2013
News Update
Color-Shifting Fibers Take their Lead from Nature; Nanocapsules Target Cancer Cells without Harming Healthy Ones ; Graphene Straightens Out with Some Help from Copper; Silicon Made Easy for Batteries; and more.

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.

Troubleshooting Distillation Simulation

June
2006
Reactions and Separations
Stanislaw K. Wasylkiewicz
A tool called azeotrope pressure sensitivity analysis (APSA) can shed light on the dependence of an azeotrope's composition and temperature on changes in pressure.

CEP: Process Safety Beacon - What is Supporting Your Equipment?

February
2013
Process Safety Beacon
Pipes and equipment that are not properly supported will be subject to stress, vibration, or other problems, This can cause leaks, or even a complete collapse of piping or equipment. But, problems with inadequate support of piping and other...

2009 AIChE Salary Survey

August
2009
Career Catalyst
Chemical engineering salaries are up 7% from two years ago, to a median of $110,950. Furthermore, average starting salaries have risen to over $65,000.

2011 AIChE Salary Survey

June
2011
Career Catalyst
Chemical engineering salaries have remained stable over the last two years at a median of $110,000. Average starting salaries are nearly $66,900. This expanded version of the article that appeared in print provides the detailed survey results.

Designing Suspension-Mixing Systems

January
2006
Fluids and Solids Handling
Pavel Ditl, Frantisek Rieger
Impeller and vessel geometries are key factors in selecting mixing equipment to efficiently suspend particulate solids in slurries

Computational Fluid Dynamics - Power to the People

April
2007
Computational Methods
Suzanne Shelley
Today's CFD Programs are more powerful and easier to use than ever, thanks to improved mesh-generation strategies, computational methodologies, user interfaces and enhanced graphics capabilities. Cover photo courtesy of Acusim and Intelligent Light.

CEP: News Update

February
2013
News Update
Now Available: High-Performance Carbon Nanotube Fibers; Nanowire-Based Solar Cell Achieves Record Performance; Fireflies Share Their Light Tricks with LEDs; Tissue Adhesives Are Inspired by the Prickly Porcupine; New Coating Shields Against Nearly All Liquids; and more.

Minimize Wastes from Specialty Chemical Processes

January
2008
Environmental Management
Michael Cipullo, Jeffrey Mueller
Use this holistic approach as the basis for a process development strategy to identify environmentally sound, cost-effective, low-waste-generating processes.

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.

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...

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.

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.

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.

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