AIChE

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.

Beware of Errors in Numerical Problem-Solving

November
2009
Computational Methods
Michael Elly, Michael B. Cutlip, Mordechai Shacham
Understand how to detect and prevent common errors when using mathematical software tools.

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...

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...

Piloting Bioreactors for Agitation Scale-Up

February
2008
Reactions and Separations
Gregory T. Benz
This article offers guidance on how to design appropriate experiments to measure scalable data for agitation in both aerobic and anaerobic bioreactors.

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: What's New

February
2013
What's New
Read about new products and services in the areas of instrumentation; fluids and solids handling; operations and maintenance; and environmental, health, and safety.

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.

Avoid Problems with Units of Measurement

February
2013
Back To Basics
Faruk Civan
Engineers need to clearly understand units, and be able to convert, express, document, and communicate them in correspondence, operating instructions, and publications.

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
Frantisek Rieger, Pavel Ditl
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.

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.

Easy Ways to Improve Energy Efficiency

December
2012
Operations & Maintenance
Alan Rossiter, Veerasamy Venkatesan
Managing the energy consumption of a process does not need to be complicated. This article presents some examples of less-complicated strategies.

Successfully Scale Up Solids Handling

April
2008
Fluids and Solids Handling
K. Eric Bengtson, Thomas G. Troxel, John W. Carson
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...

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.

Prevent Pulsation Problems in Piping Systems

March
2006
Fluids and Solids Handling
Mark Corbo
Eliminate unnecessary damage in piping systems by following these guidelines to avoid pulsations from pumps and compressors.

Realistically Predict Capacity and Pressure Drop for Packed Columns

July
2007
Reactions and Separations
Emil Abkar, Khashayar Afshar, Jeffrey Scherffius, Henry Z. Kister
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
Richard V. Porcelli, Mitrajit Mukherjee, James Nehlsen
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: Editorial - Plunging into a Time Warp

January
2013
Editorial
Cynthia Mascone
When reporting on events, writers and editors always need to be mindful of when the reader will receive the publication. This is especially critical for a monthly magazine like CEP. An event that is considered breaking news when we experience it or...

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...

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.

Designing Pneumatic Conveying Systems

May
2006
Fluids and Solids Handling
Eric Maynard
Use this 9-step methodology to design and operate a reliable and cost-effective system to efficiently transport materials.

Denmark’s Chemicals Industry: Progress and Challenges

February
2013
Global Outlook
Rafiqul Gani, Gurkan Sin, Kim Dam-Johansen
Denmark’s chemicals industry is characterized by a variety of innovative companies, especially in the life sciences. To remain competitive, these companies must continue to invest in innovation, and the country’s universities must fill a growing need for highly educated engineering professionals.

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.

Optimal Automated Process Fault Analysis

January, 2013
With this book as their guide, readers have a powerful new tool for ensuring the safety and reliability of any chemical processing system. It details a tested and proven strategy to develop optimal automated process fault analyzers.

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

CEP: What's New

January
2013
What's New
Read about new products and services in the areas of instrumentation; heat tranfser; and fluids and solids handling.

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...

Streamline Your Process Hazard Analysis

January
2013
Safety
Molly Myers, Judy Perry
A little creativity during preparation — developing checklists, grouping similar processes, pre-populating worksheets, and considering possible deviations and safeguards before meeting face to face — goes a long way toward improving the efficiency and effectiveness of your PHA efforts.

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
Alan Winstead, Ali Bourji, P.E.
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.

CEP: Career Corner - Managing Your Career Transition

February
2013
Career Corner
Loraine Kasprzak
Sooner or later during our professional careers, most of us will change jobs, get promoted, move into a different line of work, or even get laid off. My experience is a good example. I moved from an entry-level R&D engineer to a commercial...

Implement an Effective Loop Tuning Strategy

January
2013
Back To Basics
Timothy Olsen, Norman Ito
Use these loop tuning guidelines to improve process control and enhance product uniformity Many undergraduate chemical engineering programs teach the Ziegler-Nichols tuning methods, developed by John G. Ziegler and Nathaniel B. Nichols in the 1940s...

CEP: Institute News

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

CEP: What's New

December
2012
What's New
Read about new products and services in the areas of instrumentation; heat transer; and fluids and solids handling.

SBE Update: The Merging of Bio and Nano

December
2012
SBE Special Section
June Wispelwey
Earlier this year, the Society for Biological Engineering (SBE) organized its Sixth International Conference on Bioengineering and Nanotechnology (ICBN), which focused on bio-nanoscience and bioengineering for translational medicine. The conference...

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.

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.
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