Chemical Processing LogoMay 2015 Issue Preview

Ad Closing: April 13, 2015 | Material Closing: April 20, 2015

Cover Story
Metrics Underpin Sustainability Efforts
By Seán Ottewell, Editor at Large
Chemical companies increasingly are relying on specific metrics to evaluate sustainability initiatives and to assess the overall performance of their operations. Here's a rundown on some broadly applied metrics and their use.

Design and Optimization
Adequate Engineering Quality
By Stephen Cabano, Pathfinder
Misaligned quality expectations between operating companies and contractors afflict many projects. Defining what quality means and communicating this through engineering deliverables can improve the overall delivery process.

Solids and Fluids Handling
Make the Most of Integrally Geared Compressors
By Amin Almasi, Rotating Equipment Consultant
These complex machines can provide higher efficiencies than conventional compressors and particularly suit gases with medium or high molecular weights. Here are some key factors to consider with such compressors.

Instrumentation and Control
Choose the Correct Temperature Sensor
By Dave Anderson, Emerson Process Management
Temperature plays a critical role in most processes, so using the right temperature sensor is important. Choosing between RTDs and thermocouples requires consideration of a variety of factors from accuracy to durability.

Making it Work
Renewable Oils Yield Novel Specialty Chemicals
By Scott Baxter and Andy Shafer, Elevance Renewable Science
A world-scale biorefinery based on olefin metathesis chemistry consumes less energy and emits a lower volume of greenhouse gases than petrochemical technologies. It produces high-performance specialty chemicals.

Plant InSites
Prevent Tube Pullout
By Andrew Sloley, Troubleshooting Columnist
Lack of an expansion joint in the shell of a shell-and-tube heat exchanger to take care of thermal expansion can cause the tubes to pull away from the tube sheets. In addition, flow maldistribution can lead to localized tube pullout.

Energy Saver
Evaluate Energy-Related Utility Stream Impact
By Riyaz Papar, Energy Columnist
Every energy assessment should target the energy-related utility streams and should define the impact (or marginal) cost of each of these utility streams. This calculation should be done using a systems approach.


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