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CEP: Patent Update - An Invention's Nonobviousness May Not Be Obvious
CEP Magazine article, April 2013
To qualify for a patent, an invention must be both novel and nonobvious. Novelty requires that the invention differ in some way from the prior art, such as earlier patents and published materials. Nonobviousness requires that there be more than just a difference, such as an element of discovery, or... -
Understand the Basics of Membrane Filtration
CEP Magazine article, April 2013
Membrane filtration is an integral part of many industrial processes, as it is often more environmentally sustainable and cost-effective than other separation technologies -
Coriolis: The Direct Approach to Mass Flow Measurement
CEP Magazine article, March 2013
Coriolis meters eliminate the need to measure and correct for pressure, temperature, and density fluctuations to determine mass flowrate. Although their capital costs may be higher, they typically have a lower overall cost of ownership than other types of meters -
Use Quantitative Gamma Scans to Troubleshoot Maldistribution on Trays
CEP Magazine article, February 2013
Quantitative, multichordal gamma-scan analysis is invaluable for diagnosing maldistribution and channeling in distillation columns. The graphical tool introduced here is a convenient way to visually represent the data. -
Consider Recycled Water for Your Cooling Tower Makeup
CEP Magazine article, February 2013
Many types of “used” water may be appropriate as cooling tower makeup. Here’s how to determine which waters are suitable and cost-effective for the equipment in your cooling system. -
Implement an Effective Loop Tuning Strategy
CEP Magazine article, January 2013
Use these loop tuning guidelines to improve process control and enhance product uniformity Many undergraduate chemical engineering programs teach the Ziegler-Nichols tuning methods, developed by John G. Ziegler and Nathaniel B. Nichols in the 1940s. This tuning method has large controller gain and... -
Optimizing an Organic Rankine Cycle
CEP Magazine article, January 2013
An organic Rankine cycle (ORC) system can be a cost-effective way to convert waste heat to electricity. The key is finding the best ratio of net power recovery to capital cost. -
Shale Gas Brightens Outlook for U.S. Chemicals
CEP Magazine article, January 2013
The chemical industry will experience moderate annual growth over the next few years — ranging between 2.2% and 4.6% through 2017. The higher growth rate accounts for new investments announced in response to the abundant supply of shale-based natural gas. -
Use Guided-Wave Radar to Measure Water Level in Steam Loops
CEP Magazine article, December 2012
Guided-wave radar (GWR) is a useful tool for measuring water level in steam loops. This article describes GWR design and operation, and how this technology differs from more traditional forms of level indication. -
Easy Ways to Improve Energy Efficiency
CEP Magazine article, December 2012
Managing the energy consumption of a process does not need to be complicated. This article presents some examples of less-complicated strategies.