Process Design & Development

Understand the Fundamentals of Centrifugal Pumps

Back To Basics
J. Howard Kelly, P.E.
Efficient and reliable pumps can significantly improve a plant’s bottom line. This article reviews important concepts that a chemical engineer must understand and the factors that need to be considered when selecting radial-flow centrifugal pumps.

Shortcut Distillation Calculations via Spreadsheets

Reactions and Separations
Jake Jevric, Muhammad E. Fayed
This method uses a numerical solution to the McCabe-Thiele diagram to find the theoretical number of stages for binary and pseudo-binary systems,then calculates the actual number of stages, reflux ratio and column dimensions.

Prevent Caking During Solids Handling

Fluids and Solids Handling
Brian H. Pittenger, Herman Purutyan, Gabriel I. Tardos
Use these guidelines to avoid potential caking problems. The key steps are to select a material characterization method, identify the factors that can be feasibly controlled and conduct tests to confirm that process/handling changes yield the...

Optimize Mixing by Selecting the Proper Baffles

Fluids and Solids Handling
Julian B. Fasano, Kevin J. Myers, Mark F. Reeder
It is common knowledge that baffles promote better flow in an agitated vessel, but how to apply them and what kind to use take some ingenuity.

Don't Get Burned Picking Dry-Type Flame Arresters

Fluids and Solids Handling
Stanley G. Grossel
These commonly used devices rely on an internal medium to extinguish flame fronts and take the punch out of shock waves, protecting piping, equipment and personnel. Selecting such equipment involves considering the probable type of combustion,...

Streamlining the Validation Process

Tim Flanigan, Robert Mackey
Today, validation is no longer an afterthought for the design and construction of a new or renovated process or facility. It is, in fact, recognized as an integral part of the total project. Fully integrated services are now available to ensure a...

Selecting a Heat Exchanger Shell

Back To Basics
Thomas G. Lestina, P.E.
The first step in specifying a shell-and-tube heat exchanger is choosing the right shell to meet process requirements.

Size Letdown Lines for Pressure Surges

Fluids and Solids Handling
Gianni  Anci
A high-pressure gas flow in a letdown circuit can cause damage to piping and equipment. Here is how to design a system to avoid damage should a pressurized gas flow occur GianniAnci-

Optimize Power Consumption in Aerobic Fermenters

Reactions and Separations
Gregory T. Benz
By performing the necessary pilot work, and rigorously calculating the full-scale performance instead of using simple rules-of-thumb, significant energy savings can be achieved in fermenters.

A Strategy for Excellence in Process Development

Process Development
Vaibhav V. Kelkar, Lionel O'Young
Here is how to integrate overall process development activities and identify practices that facilitate commercial process development.

Squeeze More Out of Complex Columns

Reactions and Separations
Piyush Shah
These distillation setups can cut capital and operating costs by up to 30%, and increase separation efficiency. Here is a straightforward method for evaluation.

Reduce Risk When Sourcing Abroad

Fluids and Solids Handling
Gregory T. Benz, Ling Du
Purchasing lower-cost process equipment from vendors in developing nations can be an attractive proposition in times of economic austerity. When sourcing outside local channels, keep the points discussed here in mind to avoid costly problems that go...

Principles and Case Studies of Simultaneous Design

September, 2011
There are many comprehensive design books, but none of them provide a significant number of detailed economic design examples of typically complex industrial processes. Most of the current design books cover a wide variety of topics associated with process design. In addition to discussing...

Pump Wisdom: Problem Solving for Operators and Specialists

April, 2011
An accessible guide to the main reasons pumps fail—and what can be done about it Workhorses in many different industries, including the oil industry, water industry, chemical industry, food industry, and pharmaceutical industry to name a few, pumps are a vital contributor to maintaining and...

Teach Yourself the Basics of Aspen Plus

January, 2011
Aspen Plus is on of the most popular process simulation software programs used industrially and academically. Though the software is available at many corporations and universities, there are no textbooks which are dedicated to teaching the step-by-step use of the software. This book is designed to...

Reactive Distillation Design and Control

October, 2008
After an overview of the fundamentals, limitations, and scope of reactive distillation, this book uses rigorous models for steady-state design and dynamic analysis of different types of reactive distillation columns and quantitatively compares the economics of reactive distillation columns with...

Chemical Reactor Design, Optimization, and Scaleup, 2nd Edition

August, 2008
Chemical Reactor Design, Optimization, and Scaleup is the authoritative sourcebook on chemical reactors. This new Second Edition consolidates the latest information on current optimization and scaleup methodologies, numerical methods, and biochemical and polymer reactions. It provides the...

Chemical Reactor Design and Control

August, 2007
Chemical Reactor Design and Control uses process simulators like Matlab, Aspen Plus, and Aspen Dynamics to study the design of chemical reactors and their dynamic control. There are numerous books that focus on steady-state reactor design. There are no books that consider practical control systems...

Distillation Design and Control Using Aspen Simulation

April, 2006
As the world continues to seek new sources of energy, the distillation process remains one of the most important separation methods in the chemical, petroleum, and energy industries. And as new renewable sources of energy and chemical feedstocks become more universally utilized, the issues of...


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