Articles

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  • Adaptive control takes a leap forward

    The next generation of adaptive controllers will identify a process model quickly and automatically and provide process model parameters that can be displayed, trended and diagnosed.

    Gregory K. McMillan, Washington University, Mark S. Sowell, Solutia, and Peter W. Wojsznis, Emerson Process Management
    09/14/2004
  • Get control of reactor temperatures

    A reader has a plug-flow reactor whose temperature is starting to cycle. The company tried to tuning both controllers but saw no improvement. Read about potential solutions to this reader's problem.

    Diane Dierking, Senior Editor
    08/05/2004
  • Energy savings are in the air

    Anywhere compressed air can be eliminated represents an opportunity to reduce system operating expenses. Often, this reduction means fewer compressors must operate to meet the plant's air requirements.

    Christopher Schmidt, Mark D'Antonio and Alan MacDougall
    08/05/2004
  • Sidestep side-draw control surprises

    The simplest approach to control side-draw distillation columns uses flow control on the side product. This solution, however, is not ideal for all side-draw control situations.

    Andrew Sloley, contributing editor
    07/01/2004
  • Motor Selection Made Simple

    Follow these straightforward steps to help you select the right motor for your centrifugal pump

    William McNally
    07/01/2004
  • How to prevent a valve from sticking

    Members of the chemical-processing industry address the question posed by a reader of Chemical Processing magazine: What is causing the valves to stick? Possible causes offered include undersize actuators and fluctuations in the plant air supply.

    07/01/2004
  • Sites summon specialists

    The recent painful downturn and high energy costs are pushing corporate managers in the chemical industry to do whatever they can to improve company margins.

    Nick Basta
    06/01/2004
  • Do Your Plant a Good Turn

    Often, one or more centrifuges lie idle in a facility. A thorough understanding of the factors that affect centrifuges is essential to getting the most out of these units.

    06/01/2004
  • Rev up energy savings

    Electric motors in continuous or near-continuous service have high energy costs, even at the relatively low electric rates common in much of the chemical industry. Don't squander savings opportunities when considering motor replacement

    05/13/2004
  • PVDF Tackles Bromine Corrosion

    A challenge to design and fabricate, the largest-known PVDF-lined vessels now successfully serve at PTA plants

    Diane Dierking
    05/13/2004
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