Chemical Engineering Practice

Modeling Chemical Reactors

February
2015
Reactions and Separations
Ed Fontes
Models can be used to describe chemical reactors to help solve problems and optimize processes, while saving time, money, and resources.

Understand Flow Patterns in Glass-Lined Reactors

November
2004
Reactions and Separations
Kevin J. Bittorf, David S. Dickey, Keith E. Johnson , Christopher J. Ramsey
Physical modeling and computer simulation provide insights into the performance of a glass-lined reactor.

Safely Handle Powdered Solids

December
2005
Fluids and Solids Handling
Stanley S. Grossel, Russell Kahn, Daniel E. Silva, Robert Zalosh
Understand some of the accident scenarios that result in dust explosions, and follow these suggestions for preventing them.

Determining Manufacturing Costs

January
2009
Back To Basics
John Anderson
Making early estimates of a product's cost components enables developers to manage resources wisely and evaluate the product's economic viability.

Evaluating Distillation Column Performance

June
2013
Reactions and Separations
AIChE’s Equipment Testing Procedures Committee, Tray and Packed Columns Procedure Revision Subcommittee
Follow these guidelines to assess the capacity and efficiency of distillation columns containing trays or packing.

Real World Modeling of Distillation

July
2003
Reactions and Separations
Harry Kooijman, Rajamani Krishna , Ross Taylor
Previously, simulations based on nonequilibrium, or rate-based, models were considered impractical due to their complexity. However, with ever-increasing computing power, these simulations are not only feasible, but in some circumstances they should...

Understand Advanced Process Control

June
2016
Back To Basics
Perry Nordh, P.Eng.
Multivariable processes are controlled by a hierarchical structure of control layers. Field devices and regulatory controls manage individual variables, while advanced process control and production control systems coordinate multiple variables to optimize operation.

Applications in Drug Delivery and Tissue Engineering

February
2006
SBE Special Section
Ali Khademosseini, Robert Langer
Nanotechnology is an emerging field that could potentially make a major impact on human health. Nanomaterials promise to revolutionize medicine and are increasingly used in drug delivery or tissue engineering applications.

Apply Six Sigma for Process Improvement and Problem-Solving

March
2011
Back To Basics
George Liebermann
Many manufacturing processes are not run as efficiently as they could be. The Six Sigma methodology provides a foundation for continuous improvement and for solving quality, operational, and other problems.

CEP: Editorial - More Than a Spoonful of Sugar

March
2013
Editorial
Cynthia Mascone
Many of us remember receiving our polio vaccine on a sugar cube. Indeed, that was the motivation behind A Spoonful of Sugar, a song from the classic Disney movie Mary Poppins. Walt Disney had instructed the Sherman brothers, Robert and Richard, to come up with a catchy song for the film. When Robert arrived at home, after working all day trying to come up with an idea, his wife told him that the children had gotten their polio vaccine that day. Thinking they had gotten a shot, he asked them if it hurt. His son answered that the medicine was put on a cube of sugar and he swallowed it. And so “a spoonful of sugar helps the medicine go down was born.

Designing Polymerization Reaction Systems

February
2016
Reactions and Separations
Shrikant Dhodapkar, Pradeep Jain, Carlos Villa
Important considerations in polymerization reactor design include heat removal, kinetics, and process dynamics, as well as polymer properties and product quality.

Design Reactors via CFD

December
2001
Reactions and Separations
Ahmad H. Haidari, Andre Bakker, Elizabeth M. Marshall
Using computational fluid dynamics to design commercial-size batch and continuous reactors can eliminate subjective experience and empiricism, leading to better-designed, more-efficient units.

Nuclear Renaissance: A Flawed Proposition

July
2010
Special Section
Anthony D'Agostino, Benjamin K. Sovacool
Nuclear power has never been safe and it never will be. Efficiency gains and investment in renewable sources of energy will be sufficient to power the planet without resorting to nuclear reactors.

Improve Solids Handling During Thermal Drying

November
2004
Fluids and Solids Handling
John W. Carson, Herman Purutyan, Thomas G. Troxel
Follow these guidelines for ensuring the proper flow of slurries, pastes and wet powders to achieve a dried product with the desired characteristics.

Green Reactors

August
2008
Reactions and Separations
Mukesh Doble
Compare these microreactor technologies, along with the intrinsic advantages and disadvantages of miniaturization, to achieve process intensification.

Big Data Analytics: Meet the Authors

March
2016
Special Section
Richard D. Braatz / Leo H. Chiang / Lloyd F. Colegrove / Salvador GarcÍa Muñoz / Chaitanya Khare / John F. MacGregor / Marco S. Reis / Mary Beth Seasholtz / David White

Patent Update: Can a Patent Be Infringed Before It Issues?

June
2016
Patent Update
Henry Heines
How long does a U.S. utility patent remain in force? If asked this question, many might say 20 years. This is not correct, however. The term of a patent is the period of time extending from the issue date of the patent to 20 years from the date on...

Prevent Caking of Bulk Solids

April
2016
Fluids and Solids Handling
Greg Mehos, P.E.
Understanding the mechanisms behind caking, identifying key process variables and product specifications, and testing samples to predict the increase in cohesive strength of a powder over time are key to preventing and solving caking problems.

2019 AIChE Annual Meeting

November 10-15, 2019
The AIChE Annual Meeting is the premier educational forum for chemical engineers interested in innovation and professional growth. Academic and industry experts will cover wide range of topics relevant to cutting-edge research, new technologies, and emerging growth areas in chemical engineering.

Hybrid Cell Culture Models for Efficient Process Development

Conference Presentation
AIChE Annual Meeting
Thursday, November 12, 2015 - 3:15pm-5:45pm
Cell culture processes are dynamic systems governed by a large number of influential and highly interacting process variables. Despite the stringent...

Dynamic Modeling and Advanced Control of Tablet Press

Conference Presentation
AIChE Annual Meeting
Thursday, November 12, 2015 - 12:30pm-3:00pm
The tablet press is one of the most critical but least understood unit operation involved in both batch and continuous tablet manufacturing process...

Hydrolysis of Ddg

Conference Presentation
AIChE Annual Meeting
Wednesday, November 11, 2015 - 12:30pm-3:00pm
Liquid hot water (LHW) extraction was used as a pretreatment method to separate the hemicellulose fraction from dried distiller’s grain with solubles...

Optimizing LNG Production Via Boil Off Gas System Design

Conference Presentation
AIChE Annual Meeting
Wednesday, November 11, 2015 - 12:30pm-3:00pm
Optimizing LNG Production via Boil Off Gas System Design John Ergina – Technical Professional – Process, KBR Sumit Sharma – Senior Technical...

Hydrolysis Kinetics of Woody Biomass: Surface Renewal

Conference Presentation
AIChE Annual Meeting
Wednesday, November 11, 2015 - 8:30am-11:00am
Woody biomass is known to be composed of three major components: cellulose, lignin and hemicellulose. Cellulose is the most stable natural polymer in...

Democratizing Fossil Fuel Conversion

Conference Presentation
AIChE Annual Meeting
Tuesday, November 10, 2015 - 12:30pm-3:00pm
Do you have a billion dollars? Neither do most of the 6 million companies in the Unites States. In fact, less than 10 companies in the U.S. can...

The Travelling Fluidized Bed Project: Working Together

Conference Presentation
AIChE Annual Meeting
Tuesday, November 10, 2015 - 8:30am-11:00am
John Chen had a strong attachment to “challenge problems” to evaluate the ability of models and CFD codes to accurately predict complex fluidization...

Alternative Sampling Densities in Non-Uniform Sampling

Conference Presentation
AIChE Annual Meeting
Monday, November 9, 2015 - 3:15pm-5:45pm
Non-uniform sampling (NUS) is more widely practiced, but many implementations either do not weight the distribution of samples, or follow exponential...

Water Desalination By Shock Electrodialysis

Conference Presentation
AIChE Annual Meeting
Monday, November 9, 2015 - 8:30am-11:00am
The development of cost and energy efficient water purification systems, specifically desalination systems, is one of the most critical engineering...

Room Temperature Shape Memory Polymers

Conference Presentation
AIChE Annual Meeting
Monday, November 9, 2015 - 8:30am-11:00am
Temperature controlled shape memory polymers can be synthesized via a facile method using long chain fatty acid and cross-linked natural rubber. For...

Flare Regulatory Trends and Impact on Ethylene Manufacture

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
Thursday, April 30, 2015 - 8:30am-9:00am
Global attention on improving oil and gas, refinery, petrochemical, and related industrial flaring practices continues its forward advance intimately...

Impact of Control Valve Performance on Control Performance

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
Wednesday, April 29, 2015 - 2:45pm-3:00pm
A significant amount of time is often spent specifying and selecting the proper control valve for the application. However, this effort is generally...

Regulators Versus Control Valves: What's the Best Fit?

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
Wednesday, April 29, 2015 - 1:30pm-2:15pm
This session will review the selection criteria for consideration of pressure regulators vs. control valves for uses on various applications to...

Mitigating Variable TDS Levels in Wastewater Biotreatment

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
Wednesday, April 29, 2015 - 10:45am-11:15am
Wastewaters characterized by elevated Total Dissolved Solids (TDS) levels and high organic content are produced by food, petroleum, and petrochemical...

Recent Trends in the Removal of Sulfate through Precipitation

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
Wednesday, April 29, 2015 - 10:15am-10:45am
Removal of Sulfate through Precipitation Many mines have very high sulfate concentrations in their waste water due to the sulfides in the ore...

Analysis of the Capabilities of Cybersecurity Defenses

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
Wednesday, April 29, 2015 - 9:30am-10:00am
The threats to our critical infrastructure continue to evolve. As new cyberattacks are created and discovered, it is incumbent upon us to evaluate...

Robotic Convection Bank Cleaning

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
Tuesday, April 28, 2015 - 2:45pm-3:15pm
Ethylene cracking heaters like other box fired heaters in the refining and petrochemical industry represent a significant investment in a plant...

Refiners Meet the Challenges in a Changing Environment

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
Tuesday, April 28, 2015 - 2:30pm-3:00pm
Tom Hogan, Senior Vice President of Turner, Mason & Co., will discuss the refinery responses to a rapidly changing environment. Expanding...

Tier 3 Vehicle Emissions and Fuel Standards Compliance

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
Tuesday, April 28, 2015 - 1:30pm-2:00pm
Tier 3 Vehicle Emissions and Fuel Standards Compliance - A Sustainability Perspective Jacqueline Sibblies, PE Environmental Compliance Consulting P.O...

Alarm Management Gap Analysis and Improvement at NOVA Chemicals

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
Tuesday, April 28, 2015 - 8:00am-8:30am
Alarm Management Gap Analysis and Improvement at NOVA Chemicals Doug Lutz , Principal Process Automation Engineer, NOVA Chemicals Corp., Joffre,...

Creating Maximizing Value with FCC Feeds from Opportunity Crudes

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
Tuesday, April 28, 2015 - 8:00am-8:30am
In today’s competitive refining landscape, refiners can take advantage of processing lower cost opportunity crudes to improve margins. Two very...

Fischer-Tropsch Synthesis: Where We Are and Where We May GO

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
Monday, April 27, 2015 - 4:00pm-4:30pm
The Germans followed a simple plan when they scaled up the Fischer-Tropsch (FT) synthesis to the commercial level. For the reactor, they set a simple...

Demonstrating Separation and Independence of Automated Systems

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
Monday, April 27, 2015 - 4:00pm-4:30pm
Layers of Protection Analysis (LOPA) exposes the role that automation plays in causing initiating events and in responding to the resulting abnormal...

A Tutorial on Model Based Loop Tuning

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
Monday, April 27, 2015 - 3:30pm-4:00pm
This presentation provides a tutorial on tuning PID process controllers using the Lambda process model based tuning methodology. This tuning...

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