2007

A Simple Approach to Vapor Pressure Prediction

January
2007
Reactions and Separations
Andrew J. DeDoes, Matthew D. Goetz, Michael J. Misovich
This method reproduces the vapor pressure predictions of the Soave-Redlich-Kwong and Peng-Robinson equation of state with a simple Antoine equation that uses constants derived from critical properties and the acentric factor.

The Rise of China - Progress at What Price?

June
2007
News Feature
Boonsri Dickinson
As China undergoes an industrial revolution, its once pristine lands are being choked by pollution from coal-fired plants. Spurred by the upcoming 2008 Olympics in Beijing, China is quickly cleaning the air. And, it has long-term plans to invest...

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.

Improve Catalytic Oxidizer Operation

January
2007
Environmental Management
John C. Bonacci
A catalyst guard bed is a simple, low-cost modification that reduces catalyst-replacement costs, saves natural gas and cuts energy expenses.

Tools to Model Multiphase Separation

June
2007
Fluids and Solids Handling
David Connolly, Saeid Mokhatab, Timothy Newton
The flow fields in multiphase separators are often extremely complicated, making it difficult to model such systems. Computational fluid dynamics (CFD) and visual dynamic modeling (VDM) can be used together to overcome some of the challenges.

Avoid Common Pitfalls When Using Henry's Law

September
2007
Environmental Management
Allan H. Harvey, Francis L. Smith
Here is practical guidance on the use of Henry's law in engineering calculations and how to account for the temperature dependence of the Henry's constant— which is often ignored but which can be crucial for accurate process design.

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