Articles

81-100 of 107 < first | | | last >
  • Process engineering: Dryer provides a concrete lesson in control

    Removing water or moisture from a liquid stream is a critical operation in many processes. Liquid stream dryers commonly contain either molecular sieves or adsorbents; during the last 20 years, the use of molecular sieves has become much more common.

    Andrew Sloley, contributing editor, and Richard Readshaw, senior staff process engineer for VECO USA Inc.
    05/03/2005
  • Keep temperature control out of hot water

    Readers offer tips about how to control the temperature of a water stream. (From the Process Puzzler column in November 2004 Chemical Processing magazine.)

    11/01/2004
  • Test for success

    The best hopper is the least expensive one that consistently provides the required solids flow. A few simple indices can pinpoint potential solids flow problems and help optimize design.

    10/08/2004
  • 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
  • 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
  • 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
  • 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
  • Don't Send Money Down the Drain

    A versatile system meets Federal standards while minimizing VOCs in wastewater

    Terrence T. Virnig, P.E., C.H.M.M., Synthetech Inc., and John A. Meidl
    03/31/2004
  • Problem-Free Air Conveying Part III

    Consider the possible effects of ambient conditions on operations and the potential impact of the system on product characteristics

    12/18/2003
  • Problem-Free Air Conveying Part II

    Productive and reliable system and component choices depend on knowing about the potential problems each of them can cause

    10/23/2003
  • Virtual Fluid Dynamics

    Flow-simulation software could save millions of dollars at chemical and process unit operations

    Franz Zdravistch and Ahmad Haidari
    07/15/2003
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