Articles

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  • Scientific Method: 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
  • Material Handling: 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
  • Process analysis gains greater online role

    Faster. Smaller. Smarter. Modular. All express the future of process analytics. And un-stoppable describes the ongoing migration of process analytical instruments to continuous, online, field-mounted use at chemical plants.

    C. Kenna Amos, contributing editor
    09/11/2006
  • HMIs evolve in process control

    New HMI technology is putting a whole new (inter)face on how operators view control systems information, while at the same time driving human error out of systems and improving safe work practices.

    Ian Nimmo, president, User Centered Design Services LLC
    09/11/2006
  • 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
  • Wireless wins wider role

    Wireless is poised for a big breakthrough in plant operations because of its ease of use, safety and potential for energy savings.

    C. Kenna Amos, contributing editor
    03/14/2006
  • Distillation control and optimization, Part 1

    Control columnist Bela Liptak describes the distillation process and PID-based controls, reviews optimization strategies, and shows how advanced controls can cut operating costs of distillation.

    Béla Lipták, PE, Control Columnist
    01/11/2006
  • 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
  • Dig Deeper to Find More Capacity

    Pipeline simulation software can uncover hidden causes of capacity bottlenecks.

    Todd J. Willman, EPCON International, Reuben Gates, Shell Chemical LP, and Mark Haboian, Eastman Kodak Co.
    11/09/2005
  • The Synergy of Simulation, Experimentation and Technical Support Activities in a Research Consortium

    For the business of designing process heat exchangers, computational fluid dynamics (CFD) tools are still not practical for everyday use. However, in a research consortium such as HTRI, integrating advanced analysis tools like CFD with industrial-sized experimentation and then applying them to real-world technical problems provides a significant synergistic benefit to the consortium members.

    Kevin J. Farrell
    11/06/2005
  • 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
  • 10 principles for securing control systems

    KEMA Consultant Jay Abshier takes an unbiased and highly detailed look at where plant security really is, and what is being done to better protect our process automation systems and infrastructure. Print page Email page 10 principles for securing control systems KEMA Consultant Jay Abshier takes an unbiased and highly detailed look at where plant security really is, and what is being done to better protect our process automation systems and infrastructure.

    10/25/2005
  • Keep cool when designing batch reactors

    The stirred batch reactor is a workhorse at many plants. In designing such a unit, focus on effective temperature control to achieve optimum performance.

    John Edwards
    09/28/2005
  • Simulated Moving Bed Chromatography Offers Real Attractions

    A continuous purification technique, simulated moving bed chromatography combines high yields and purities with easy scale up and reasonable throughputs.

    Kathleen Mihlbachler, Eli Lilly and Company, and Olivier Dapremont, Aerojet Fine Chemicals
    08/31/2005
  • Getting batch material transfers under control

    Batch material transfer control seems an easy task to carry out, but the reality is that many functions are necessary if the system is to accomplish accurate batch material transfer control. Weighing systems with device-level controls can help.

    08/10/2005
  • Efficient batch control

    Efficient batch control can be both an art and science, so act accordingly for best results, and always remember "it's survival of the fittest" out there.

    07/13/2005
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