Ad Closing: December 10, 2014 | Material Closing: December 18, 2014
What Will 2015 Bring?
By Thomas Kevin Swift and Martha Moore, American Chemistry Council
Here's our annual look at the state of the American chemical industry. It provides not just an economic forecast but also a discussion of the key factors affecting the prospects of chemical manufacturing in the U.S.
Design and Optimization
Avoid Control Valve Oversizing
By Michael McCarty, Fisher
An oversized control valve can create a variety of problems and undermine effective process control. Here are some tips for spotting oversized valves already in place and for preventing oversizing when specifying new valves.
Solids and Fluids Handling
Consider Hermetically Sealed Direct-Drive Centrifugal Compressors
By Amin Almasi, Rotating Equipment Consultant
Maintenance issues related to seals and lubricating-oil systems often plague compressors. Hermetically sealed direct-driven centrifugal compressors using magnetic bearings offer an attractive way to avoid such headaches.
Instrumentation and Control
State-based Control Gains Ground
By Seán Ottewell, Editor at Large
Most plants don't operate at a single steady state. More and more sites are adjusting how they control their processes to the particular state of the process. Such state-based control has provided some significant benefits.
Making it Work
New Seal Solves Problem in Handling Dispersions
By Jürgen Mews, EagleBurgmann Germany
Polymer dispersions are not thermodynamically stable and thus tend to coagulate. This poses severe challenges to mechanical seals. A site in Marl, Germany, opted for a special cartridge seal for a cost-effective, long-term solution.
Understand How Level Instruments Work
By Andrew Sloley, Troubleshooting Columnist
Liquid level commonly is measured using displacers, floats or differential pressure. Understanding the physics behind the measurement is crucial for knowing how an instrument may be operating when facing unusual conditions.
Sustain Energy Changes through Simple Changes
By Ven Venkatesan, Energy Columnist
It's not always necessary to look for complicated process changes to save energy. Some simple operational changes can complement energy optimization efforts, resulting in significant energy savings. Here are some examples.
For advertising information contact your district manager or Rita Fitzgerald, Production Manager, at 630/467-1300 ext. 468. Send insertion orders to her at Chemical Processing, 1501 E. Woodfield Rd., Suite 400N, Schaumburg, IL 60173; fax 630/467-0197; e-mail email@example.com.