Technical & Practical
Time for action: Support has ended for Windows 2000 in industrial automation
All good things come to an end. And so it is with Microsoft extended support and security updates for Windows 2000,which ended in July 2010. Any manufacturer with industrial applications that are based on Windows 2000 may wisely be considering…
Flexible Heat Exchanger Networks
The ever important aim of energy efficiency in the chemical process industries (CPI) is brought closer to its target by the practice of energy recovery in heat exchanger networks (HENs). When heat exchangers are designed to work together to exchange…
Distillation Back Mixing: Impact on Batch Yields
Several case histories illustrate the benefits of identifying and correcting poorly designed reflux and product-handling systems Manufacturers of specialty chemicals are routinely required to reduce costs and increase the production of their high-value products. Specifically, competitive pressures from the developing…
Designing Safer Process Plants
Many individuals and organizations have made important contributions to the creation of inherently safer (IS) products, processes and process plants [1–3]. A brief survey of successful case histories shows that most reported applications relied on only a few of the…
Refinery Operators and Maintenance Technicians: Mapping Competencies
Use this visual mapping method to assess functional qualifications A variety of factors — including a shift in the median age of workers worldwide and the impending skills shortage due to attrition and early retirements — have created a need…
Hopper inserts for improved solids flow
Storing solid materials in hoppers, bins and silos is ubiquitous in the chemical process industries (CPI), as are challenges associated with dispensing them. In many cases, using vessels with steep cones and smooth walls is enough to provide reliable flow.…
‘I do not believe in entrainment’
It was the Dr. James R. Fair Heritage Distillation Symposium at the Chicago AIChE meeting last month. I had decided to finally give a presentation about something that has been bugging me since October 28, 1974, my first day as…
PEMS: The Low-Cost Alternative To Emissions Monitoring
Regulatory authorities around the world require continuous emissions monitoring of certain pollutants from large combustion sources. There are two main technologies for monitoring these emissions on a continuous basis — the more traditional one relies on sampling and analyzing exhaust…
Achieving Zero Liquid Discharge Status
Water-supply issues are emerging as a national concern with certain sectors coming under increasing scrutiny. This is certainly the case with the ethanol industry. State discharge regulations dictate that plant designs incorporate technological solutions to minimize water use. These designs…
Infrared Temperature Measurement
Contact-based temperature sensors, such as thermocouples and resistance temperature detectors (RTDs), have demonstrated accurate and cost-effective operation throughout the chemical process industries (CPI). However, there are many applications and settings where they are simply not practical. In those cases, engineers…