Chemical Engineering Practice

Improve Energy Efficiency via Heat Integration

December
2010
Heat Transfer
Alan Rossiter
Process heat integration using pinch analysis is a respected tool for achieving energy efficiency. This article explains what pinch analysis is and how to use it in process design and operation to attain real-world energy efficiency gains.

Rapid Process Design

September
2006
Reactions and Separations
Professor Michael F. Doherty, Sagar B. Gadewar
Use this structured approach, which combines preliminary experimental data with predictive methods and heuristics, to quickly generate and screen process alternatives at the early stages of a new venture.

Designing Multistage Agitated Reactors

January
2014
Reactions and Separations
Gregory Benz
This article bridges the gap between theory and practice for the design of continuous-flow mechanically agitated reactors, with a focus on mechanical and hydraulic issues.

Patent Update: Patent Validity Could Come Down to Clarity

December
2015
Patent Update
Henry Heines
A patent is intended to expand the public’s knowledge in a particular area of technology, and it must clearly convey exactly what the patent covers and what it does not. An individual learns that information by reading the patent’s claims, a...

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.

Cool Down with Liquid Nitrogen

September
2015
Heat Transfer
Oscar Beteta, Svetlana Ivanova
Many low-temperature processes leverage nitrogen’s cooling and freezing capabilities. Find out what methods are used in what applications and why.

Particle Technology

eLearning (online) Course
Difficulties in handling or processing powders are often overlooked and can result in production stoppages. Gain a practical introduction to particle...

Implement an Effective Loop Tuning Strategy

January
2013
Back To Basics
Norman Ito, Timothy Olsen
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...

Distillation Technology for Operators

eLearning (online) Course
Gain an understanding of the theory of successful distillation practices. In addition, learn about what actually happens in a column with this online...

Chemical Looping Rises to the Challenge

May
2015
On The Horizon
Liang-Shih Fan, Liang Zeng, Siwei Luo
By separating a reaction into several subreactions, chemical looping minimizes exergy loss, facilitates product separation, and provides flexibility in process design.

New Products: December 2015

December
2015
New Products
Instrumentation Temperature Transmitters Feature Dual Sensor Inputs The THZ 3 and TDZ 3 two-wire (loop-powered) temperature transmitters provide an isolated and linear 4–20-mA output proportional to input. They can be configured quickly and easily...

Introduction to Fluidization

November
2014
Back To Basics
Raymond Cocco, S. B. Reddy Karri, Ted Knowlton
Fluidized beds offer excellent heat transfer, and have the unique ability to move a wide range of solid particles in a fluid-like fashion. This article explains the basics of fluidization theory and outlines how to design a typical fluidized bed.

Patent Update: Process Claims: Know Your Infringer

September
2015
Patent Update
Henry Heines
Process patents are an important class of patents, as many inventions are best-defined, or most clearly patentable, as processes. In many cases, a well-crafted process claim can keep the most threatening competitors at bay and be highly lucrative...

Consider Recycled Water for Your Cooling Tower Makeup

February
2013
Heat Transfer
Paul Puckorius
Many types of “used” water may be appropriate as cooling tower makeup. Here’s how to determine which waters are suitable and cost-effective for the equipment in your cooling system.

Incorporate Rigorous Heat Exchanger Models in Simulation

July
2014
Back To Basics
Ron Beck, Shelby Hegy, Tom Ralston
Embedding a rigorous heat exchanger model within an established simulation environment can help engineers increase process yields, while minimizing heat exchanger energy consumption and capital expenditures.

Fluid Mixing Technology for Operators

eLearning (online) Course
Are you ready to expand your knowledge of mixing theories and improve your performance and results? This course is for you.

Crystallization Process Development

eLearning (online) Course
An in-depth overview of what theories, methods and techniques should be on the radar of every engineer involved in crystallization processes and...

SAChE证书课程–氮在过程安全的作用

eLearning (online) Course
这门SAChE安全证书课程重点讲化学工业中的基本物质-氮气。因为是惰性气体,氮气在化工生产、加工、处理和运输等各个方面有着广泛的应用。氮封使可燃物的安全储存和使用成为可能,还有助于防止可燃粉尘爆炸。但是,它也是一个明显的窒息性气体,在其处理和使用中必须应用安全原则。

Control Boiler Emissions through Work Practices and Energy Management

February
2014
Environmental Management
James Robinson
The Boiler MACT regulation provides compliance options that include pollution-abatement equipment, work practices, and energy efficiency improvements. An energy management and reporting system (EMRS) can be a part of a plant’s compliance strategy.

Heat Exchanger Design and Operations

Public (classroom) Course
This course is ideal for chemical and mechanical engineers who are engaged in plant operations, technical services, and project design; or with...

Make Your Plant More Energy-Efficient

December
2005
Heat Transfer
Alan Rossiter
Improve energy management by optimizing current equipment and operations, implementing economic investments, and engaging in sustaining activities.

Troubleshoot and Solve Pneumatic Conveying Problems

June
2010
Fluids and Solids Handling
Eric Maynard, Eric Maynard
Use this scientific approach instead of a costly trial-and-error method to diagnose problems and implement solutions for conveying systems.

Follow this Process Development Path

December
2013
Reactions and Separations
Paul Szabo
Bench-scale engineering (BSE) and the interdisciplinary no-transfer team (INTT) are valuable complements to the scale-down-before-scale-up method of process development.

Handle Bulk Solids Safely and Effectively

September
2009
Fluids and Solids Handling
Eric Maynard, Greg Mehos and Eric Maynard
Follow these guidelines for proper design of bins, hoppers, and feeders to avoid operational and safety problems.

Use Quantitative Gamma Scans to Troubleshoot Maldistribution on Trays

February
2013
Reactions and Separations
Henry Z. Kister
Quantitative, multichordal gamma-scan analysis is invaluable for diagnosing maldistribution and channeling in distillation columns. The graphical tool introduced here is a convenient way to visually represent the data.

Crystallization Operations

Public (classroom) Course
A practical overview of the basics of crystallization and precipitation and how to apply the fundamentals of crystal growth and nucleation to...

Submitting Your First GHG Report

March
2010
Environmental Management
Kristine Baranski, Mary Ellen Ternes
This overview of EPA’s greenhouse gas reporting rule explains the regulation’s requirements and suggests strategies for compliance. It also provides insights regarding enforcement and confidential business information.

Select the Right Impeller

June
2015
Back To Basics
Julian Fasano
The key to effective, efficient mixing is selecting the appropriate impeller.

Distillation in Practice

eLearning (online) Course
Learn essential distillation concepts including vapor liquid equilibrium, start-up and troubleshooting, and other best practices with this online...

Select the Best Model for Two-Phase Relief Sizing

May
2001
Safety
Ronald Darby, Ron Darby, Paul R. Meiller, & Jarad R. Stockton
A variety of methods exist for sizing valves, but not all give the best predictions for certain conditions. RonDarby-PaulR.Meiller-JaradR.Stockton-

Easy Ways to Improve Energy Efficiency

December
2012
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.

Excel VBA Programming for Chemical Engineers

Public (classroom) Course
Get up-to-date on proven design and troubleshooting principles for handling bulk solids in bins, hoppers, chutes and feeders for safe and trouble-...

Distillation in Practice

Public (classroom) Course
Learn essential distillation techniques and developments and how to apply them to solve difficult distillation problems.

Avoid Bulk Solids Segregation Problems

April
2012
Fluids and Solids Handling
Eric Maynard, Eric Maynard
Powder blend consistency can be difficult to maintain during processing. This article provides an overview of common segregation mechanisms, highlights key sampling techniques, and offers practical guidance on preventing and solving segregation...

Spray Nozzles 101: Spray Nozzle Selection

August
2014
Back To Basics
Charles Lipp
Understand the two most common spray nozzle designs, as well as their basic characteristics, in order to choose the best nozzle for your application.

Pneumatic Conveying of Bulk Solids

eLearning (online) Course
Learn design and troubleshooting strategies that result in trouble-free flow. This online course addresses challenges like wear, attrition, rate...

Graphically Assess a Reactor's Characteristics

March
2006
Reactions and Separations
Professor David Glasser, David Milne, David Glasser, Diane Hildebrandt and Brendon Hausberger
Use this technique to analyze reactor/reaction systems for which dependable kinetic data are available, or to quickly find the operating characterisitics needed for the maximum selectivity of a reactant.

Ten Steps to an Effective Bin Design

November
2013
Back To Basics
Eric Maynard
Before choosing a bin and hopper for your bulk solids application, the flow properties and characteristics of the powder or bulk material must be known. Use this ten-step approach to determine the optimal bin design for your process.

SBE Update

July
2009
SBE Special Section
June Wispelwey
Improving Biopharmaceutical Development

Minimize Degradation of Heat-Transfer Fluids

January
2015
Back To Basics
Christopher Armstrong, Gaston Arseneault
The key to maximizing the useful life of heat-transfer fluids in liquid-phase systems is proper fluid selection. This article discusses the most common methods of deterioration and suggests potential solutions.

Patents: Crossing the Novelty Threshold

November
2015
Career Catalyst
Henry Heines
Only inventions that are novel qualify for patent protection. Sometimes the novelty of an idea is not readily apparent. Understand where novelty lies so you can identify patentable ideas in your routine engineering work.

Integrated Process Synthesis

Public (classroom) Course
As a chemical engineer, before you can make proposed process alterations you must consider the potential investment return. Yet, typically this...

Reactor Selection: Plug Flow or Continuously Stirred Tank?

April
2006
Reactions and Separations
Professor David Glasser, David Milne, David Glasser, Diane Hildebrandt and Brendon Hausberger
Use this graphical technique to choose a reactor configuration based on optimizing residence time.

CEP: Patent Update - What Constitutes Inducement to Infringe a Patent?

July
2015
Patent Update
Henry Heines
Can you be held liable for patent infringement even if you do not practice the patented invention? Can a company that sells a material to the manufacturer of a patented product be held liable? Can a vendor that supplies a component to a service provider that assembles or uses a patented system be held liable? Can a supplier of raw materials to a production plant that runs a patented process be held liable?

Process Burners 101

August
2013
Back To Basics
Charles Baukal, Erwin Platvoet
Process burners may be classified based on flame shape, emissions, fuel type, and other characteristics. Here’s what you need to know to work effectively with a burner manufacturer when selecting a burner for your application.

Revive Your Columns with Cyclic Distillation

December
2015
Reactions and Separations
Costin Sorin Bîldea, Anton A. Kiss
This process intensification technique involves changing a tower’s internals and operating mode and the separate movement of the liquid and vapor phases. This can significantly increase column throughput and reduce energy requirements, while improving separation performance.

Pneumatic Conveying of Bulk Solids

Public (classroom) Course
Gain a better understanding of pneumatic conveying problems and principles, allowing you to evaluate and troubleshoot your in-plant systems to...

Succeed at Process Integration

January
2004
Career Catalyst
Alan Rossiter
In the application of pinch analysis for energy efficiency improvement and process optimization, technical excellence is necessary and human interactions are important for project success.

Tackling Difficult Mixing Problems

August
2015
Fluids and Solids Handling
Dr. David S. Dickey
Some difficult mixing problems cannot be solved, but their impacts can be lessened. Here’s how you can deal with difficult processes or products, misunderstandings about good mixing, and obstacles to improvements.

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...

Hybrid Models of Distillation Towers for Plant Optimization

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
Wednesday, April 29, 2015 - 10:45am-11:15am
Real time optimization of plant operations started in 1980s and expanded rapidly during 1990s and early 2000s. Such applications have brought...

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...

Optimization Methodology of Bog Rate for the LNG Carriers

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
Wednesday, April 29, 2015 - 8:30am-9:00am
A new propulsion system, such as Dual Fuel Diesel Engine (DFDE), has replaced the conventional steam propulsion system. Even though Main Engine Gas...
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