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Targeting Material Reuse via Property Integration

August
2005
Environmental Management
Mahmoud M. El-Halwagi, Vasiliki Kazantzi
Material reuse is often governed by the functionalities of the process streams. This new property-based technique creates a pinch diagram that identifies targets for the minimum use of fresh resources and waste discharge, and the maximum integration...

Prepare a Top-Notch Scope of Work

November
2005
Management
Stephen W. Maas
This comprehensive overview of what needs to go into a well-defined scope of work will be useful to chemical engineers who are new to project engineering and project management.

Screening Reactive Chemical Hazards

May
2006
Safety
Yen-Shan Liu
Use these tools to identify potentially reactive chemical hazards and avoid the expense of conducting numerous detailed hazard assessments.

Understand Temperature Change in Process Stream Mixing

September
2006
Heat Transfer
Anil K. Mehrotra, Dharmendra Tiwary
The isobaric and adiabatic mixing of process streams can yield an outlet stream temperature that is either in between, higher than, or lower than the inlet stream temperatures. This article uses simulation to explore temperature-change scenarios in...

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.

Minimize Wastes from Specialty Chemical Processes

January
2008
Environmental Management
Jeffrey Mueller, Michael Cipullo
Use this holistic approach as the basis for a process development strategy to identify environmentally sound, cost-effective, low-waste-generating processes.

Plant Security Remains a Moving Target

May
2008
News Feature
Cynthia F. Mascone
While chemical companies work toward complying with existing standards, legislators are poised to revise those very rules — with changes ranging from minor tweaking to major overhaul on the table.

Chemistry Simulation Drives Clean Technology Progress

August
2008
Fluids and Solids Handling
Scott A. Drennan
Here's how to determine when to use computational fluid dynamics (CFD) to simulate the detailed chemistry of reacting flows for combustion and chemical processes.

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.

Selecting Entrainers for Azeotropic Distillation

March
2009
Reactions and Separations
Lionel O’Young, Madhura Chiplunkar, Vivek Julka
This systematic methodology uses residue curve maps to identify and evaluate substances that can facilitate distillation by breaking an azeotrope.

Driving Profitability with Swaps and Exchanges

June
2009
Management
Frank Erzinger
Swap and exchange programs can significantly reduce logistics costs, as well as an organization’s carbon footprint. Despite its potential, the technique is often constrained by commercial, technical and operational concerns.

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