Process modeling has progressed from the "molecule accounting" of steady-state flowsheeting packages to become a central platform for capturing and deploying chemical process industries’ (CPI) intellectual property (IP). Systematic modeling has moved center stage to help companies differentiate themselves from…
Management is a process of managing risk; maintenance management is a process of managing risk for operational reliability. Since it is hard to manage what cannot be measured, effective maintenance management demands good data on machine health — a comprehensive…
The perfect valve to control your process has been selected. The valve will pass your maximum flow. Everything is great, right? In some cases digging a little deeper might help. The control valve usually should not be the most…
Cutler Technology Corp. (San Antonio, Tex.; www.cutler-tech.com) has launched ADMC 64, its most-advanced model-predictive controller ( CE, November 2005, p. 15). With 64-bit resolution, the device easily handles 600 coefficients with calculation times under ten seconds (on an Intel quad…
Launched at ISA Expo 2008 this month (Houston, Tex.; October 14 – 16), the ELDS line-of-sight gas detectors from Senscient, Inc. (League City, Tex.) is said to deliver three orders of magnitude better sensitivity for detecting flammable gases and false-alarm…
Each compressed air system is typically composed of one or more compressors with a power source, control system, intake air filter, after cooler and separator, air receiver, air dryer, interconnecting piping and a distribution system to deliver air to points…
There are many criteria that the engineer considers when optimizing: maximization of product yield or quality; minimization of recycle flow or energy consumption; and economic indicators, such as maximization of profits, net present worth (NPW) and minimization of payback period…
Process engineers understand how to harness the power of closed-loop multi-variable control in their plants. The evolution of digital control in the chemical process industries (CPI) has provided that power. Yet digital control represents just one facet of optimization and…
Today, companies in the chemical process industries (CPI) are faced with increased operating expenses, reductions in the number of qualified workers, strong competition and the need to do more with less. To meet these challenges, many companies are making use…
The continuing growth in the importance of chemical processing, including oil-and-gas processing, increases the need to understand prediction methods for chemical properties and chatacteristics and the impact that these properties have on unit operations, process simulation and design. A variety…