Articles

281-300 of 386 < first | | | last >
  • 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
    10/18/2007
  • Signet 8900 multi-parameter controller features modular design

    The Signet 8900 Multi-Parameter Controller takes the concept of modularity to the extreme. Each 8900 is field commissioned with the users specified combination of inputs, outputs, and relays using simple-to-install modular boards into the base unit.

    10/16/2007
  • 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
  • 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.

    08/28/2007
  • 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.
    07/11/2007
  • Squeeze More from Your Motors

    By integrating smart motor control centers that will monitor energy consumption a plant can remove wasteful energy expenditure, prevent unplanned downtime, and improve overall operational efficiency. Recent tax code amendments make these improvements inviting.

    Moin Shaikh, Siemens
    06/07/2007
  • What is taking so long?

    Despite its 30-plus-year history, advanced process control (APC) applications remain few and far between, but it doesn’t need to be that way. Dave Harrold, cofounder of the AFAB Group, reports.

    06/01/2007
  • Control valves for slurry service

    In this installment of Ask The Experts, noted process control authority and CONTROL Columnist Béla Lipták and his cadre of automation experts answer a reader’s question regarding control valves for slurry services.

    05/01/2007
  • Defeat barriers to energy cost control

    Use communications and incentives to overcome “The Competitor Within", advises Christopher Russell in this month's Energy Saver column.

    Christopher Russell, contributing editor
    04/24/2007
  • Final control

    What’s the latest on control valves? Here's a look at the current marketplace for the final element that all control stuff is aimed at—the control valve that produces the end result.

    Walt Boyes, Editor in Chief
    04/17/2007
  • Achieve continuous safety improvement

    Enhancing safety performance requires diligence and unrelenting effort. The Independent Safety Review Panel’s recently released report on the safety culture and practices at BP’s U.S. refineries where a March 2005 explosion occurred in Texas City, Texas indicates similar failings are likely elsewhere in the industry. Learn what can be done to enhance continuous safety improvement.

    Angela Summers, SIS-TECH Solutions
    04/12/2007
  • NeSSI taxis for takeoff

    Though acceptance and networking hurdles remain, the New Sampling/Sensor Initiative (NeSSI) is starting to emerge in real-world, standardized, modular process control applications.

    Jim Montague, Executive Editor
    03/03/2007
  • The evolution of plant automation

    Understanding the purpose of control and safety systems helps users ensure each is appropriately optimized. The duties of the SIS are to protect the people, environment and assets against unsafe conditions.

    Angela Summers, PhD, PE, founder of SIS-TECH Solutions
    03/03/2007
  • Pressure control optimization

    Floating pressure control means that, at minimum pressure, the heat required at the reboiler is minimized, its capacity is increased, and fouling is reduced.

    Béla Lipták, PE, CONTROL Columnist
    03/03/2007
  • Take the pressure off pressure control

    Linkage of other variables can stymie hot vapor bypass schemes, according to Andrew Sloley's Plant InSites column.

    Andrew Sloley, contributing editor
    02/19/2007
  • The DCS spirit lives on everywhere

    Classic distributed control systems typically remain only in high-availability refining and power applications, but their strategies and capabilities persist in descendants and today’s sophisticated networks.

    Jim Montague, Executive Editor
    02/09/2007
281-300 of 386 < first | | | last >