Articles

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  • Build reliability in during design

    Instrumentation that promises to improve reliability may not always be what they seem. You have to consider whether a site can properly maintain sophisticated instruments.

    Dirk Willard
    12/19/2007
  • Faking It Isn’t All Bad

    Simulate or model your loop tuning, operator training, advanced process control or optimization for savings, safety and skill-building.

    11/16/2007
  • Monthly Preview: December 2007

    Here's a look at what will soon be featured on ChemicalProcessing.com. Be sure to check back for the latest articles, news and columns before you see it in print.

    10/02/2007
  • Succeed at Simulation

    The “Seven rules for successful simulation” need to be revisited and revised because of advancements in computers. Simulations that once took weeks to compute an answer now take mere hours.

    Cliff Knight, KnightHawk Engineering
    09/06/2007
  • How hydraulic modeling can improve the efficiency of your pump systems

    In spite of their large operating cost, most pump systems are inefficient by design. Among the common design problems are non-optimal pipe sizing, control valve utilization and, perhaps most common, incorrectly sized pumps. How a pump operates depends on the system, so improvements must focus on the system as a whole.

    Tom Glassen
    02/20/2007
  • Rethink experiment design

    The traditional approach to experimentation, often referred to as the “scientific method,” requires changing only one factor at a time (OFAT), but this method only allows one to see things one dimension at a time. By varying factors only at two levels each, but simultaneously rather than one at a time, experimenters can uncover important interactions.

    Mark J. Anderson and Patrick J. Whitcomb, Stat-Ease
    11/01/2006
  • Ensure proper silo design

    Designing equipment for solids is not an exact science. The flows of gases and liquids are generally better understood than those of solids. Most production problems arise from flaws in the design. This article presents questions you can ask yourself to ensure reliable flow in your silo.

    Joseph Marinelli, Solids Handling Technologies, Inc.
    09/22/2006
  • Better Design Is No Pipe Dream

    The benefits of using pipeline simulation tools at the piping and instrumentation diagram (P&ID) level, rather than running simulations just on the process flow diagram, can often be overlooked.

    Mike Spear, editor at large
    07/17/2006
  • Evaluate reactivity with limited resources

    The initial critical steps of reactivity risk reduction need not be expensive, time consuming and require extensive expertise.

    W. J. Rogers, C. Wei and M. S. Mannan, Mary Kay O’Connor Process Safety Center
    11/27/2005
  • Your job is still safe... for now

    With mechanical simulation tools, one engineer can do the work of an entire staff. With chemical processes, however, simulation tools aid the staff — but don’t replace it…yet.

    10/25/2005
  • Process Engineering: FRI meets distillation needs

    Distillation has always been a critical and costly step in the manufacture of products in the petroleum, chemical, and pharmaceutical industries. Fractionation Research reveals how companies can pool their efforts to obtain experimental distillation data.

    04/29/2005
  • Process Engineering: Looking for good data?

    Are you experiencing problems with measurement uncertainty and are often left with poor data? Let Dr. Gooddata help you develop objective numerical tests for good data.

    Ronald H. Dieck, Ron Dieck Associates Inc.
    02/04/2005
  • 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
  • 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
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