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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
  • 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.

  • PAT isn’t standing pat

    Traditional laboratory-based analytical techniques more and more are moving online and even being replaced by the virtual analysis offered by soft sensors and inferential measurements.

    Mike Spear, editor at large
  • Portable conveyor speeds paint production

    Unit ensures a consistent flow of soft acrylic powder without lumps or sticking, improving the production of thermoplastic paint.

    Michel Podevyn, Spiroflow Systems, Inc.
  • Improve control loop performance

    Specification of control valves doesn’t adequately emphasize the very basic requirement that valve position respond in a timely manner or even at all — leading to process variability.

    Gregory K. McMillan, Emerson Process Management
  • Ethanol plant boosts output and saves energy

    Implementation of advanced process control for distillation and dehydration steps allowed a Wisconsin plant to meet competing goals.

    Jacob Duke, Badger State Ethanol, and Lina Rueda, Pavilion Technologies
  • Monthly Preview: December 2007

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

  • Need a tower internal specialist?

    For over 35 years, the Sulzer Chemtech Field Services group has been a successful tower internals specialty company, performing tray and packing installation, tower maintenance and plant turnaround projects.

  • No more turnaround headaches

    After the purchase of Enhanced Separation Technologies, Sulzer Chemtech USA now offers a more complete line of equipment and services for column repairs, maintenance and turnarounds.

    Sulzer Chemtech USA
  • Membrane Boasts Material Benefits

    As economical separation of contaminants from natural gas becomes increasingly important, simulation eases the design of innovative module to remove carbon dioxide. Membranes offer potential advantages over other methods.

    Paul J. Rubas and Kevin R. Geurts, ExxonMobil Upstream Research Co.
  • 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
  • Distillation, Part 5: Multiple Products

    In Part 5 of this series on distillation control and optimization, we find that adding a side-stream component to your process gives an additional degree of freedom, but makes it even more essential to not mismatch the variables.

  • Two bulk conveyors prove better than one

    Engineers at EaglePicher Corp. in Quapak, Okla., faced some unique problems in manufacturing high-purity isotopic chemicals and wound up addressing them via a unique solution.

    David Boger, Flexicon Corp.
  • Gamma scanning seeks an inside edge

    Many companies decide not to build up certain capabilities in-house mainly because they don’t have sufficient regular demand for them. Gamma scanning of distillation columns is a case in point, but on-site scanning specialists may be the wave of the future.

    Mike Spear, editor at large
  • Properly deliver compressed gases

    From large petrochemical units to tiny pharmaceutical pilot plants, day-to-day operations depend upon providing compressed gases in a controlled, safe and environmentally conscious manner. Correct gas handling also can improve process efficiency.

    Larry Gallagher, CONCOA
  • Cut column energy consumption

    With increasing energy prices and public sensitivity to energy consumption, many plants are paying more attention to optimizing distillation. Simple and low-risk operational changes often can provide substantial savings.

    Andrew Sloley, VECO U.S.A.
  • Distillation deserves a high profile

    Columns often present abundant opportunities for improvement, says Editor in Chief Mark Rosenzweig in his monthly column.

    Mark Rosenzweig, Editor in Chief
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