Articles

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  • Adapt or perish

    Embrace changes in our profession to survive and succeed

    11/08/2004
  • Mix It Up

    The new breed of multi-agitator mixers can help eliminate redundant equipment and streamline processes because of their versatility and efficiency

    03/31/2004
  • 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
  • A New Spin on Safety

    All materials and processes have multiple hazards. However, it is highly unlikely that any alternative process will be inherently safer with respect to all hazards. So, optimization efforts must focus on identifying the design that gives the best overall combination of desirable characteristics.

    05/13/2004
  • Triangular cycling occurs in a pressure loop

    Install a flow meter in the recycle, cascade the flow set point with a pressure control loop. With proper tuning, the valve characteristics are lost in the flow control loop, which should be tuned fast with PI.

    03/01/2004
  • Preheater points out the value of cooling off

    Lack of attention to detail in conceptual design can hide many sins. Put the problem aside and then ponder it again. A fresh look may lead to an even better solution.

    05/12/2004
  • The Bioproducts Crescendo Builds

    Market forecasts for bioproducts are upbeat. One even predicts that industrial biotechnology will be a $160 billion global business by 2010. Industrial biotechnology first took off in the early 1980s; what gives today's activity a buzz of excitement is the repeat of something else from that era: high energy prices.

    03/03/2004
  • An alternative check

    Readers offer tips about reliable alternatives to conventional check valves. Suggestions include using a fluidic check valve, switching to a U-trap, using a standpipes putting two check valves in the series and changing position relative to the ground.

    09/16/2004
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