Articles

on 'Design & Simulation'

121-140 of 190 < first | | | last >
  • What’s in the air for continuous emissions monitoring?

    More attention to mercury and increased acceptance of predictive approaches is emerging. Such monitoring not only can keep plants on the right side of regulators but also can help provide insights for optimizing operation of equipment.

    Mike Spear, editor at large
    04/13/2007
  • Flame Modeling Provides Matchless Results

    A computer simulation helps solve a refinery combustion problem. Finding ways to limit NOx from fired heaters, especially under stringent environmental regulations, has become a major concern for the petroleum refining industry. Complying with new stricter regulations, a Texas refinery upgraded the burners in one of its large cylindrical furnaces.

    Roberto Ruiz, Ph.D., John Zink Co.
    04/13/2007
  • Can you trust your data?

    To make sense of supply chain data requires consolidating the information into a central repository and then using tools or applications to pinpoint errors and inconsistencies. It also includes taking possible corrective actions that enhance overall quality and confidence in the raw information.

    Andrew Nelson, Matrikon Inc.
    03/14/2007
  • Properly Install Column Internals

    Good installation is crucial for trouble-free startups and optimum tower performance. Experienced installers share their practical knowledge to help you make sure that your tower will work as expected. The advice also applies to absorbers and strippers.

    Frank Rukovena, Jr., Fractionation Research, Inc.
    02/19/2007
  • Find the perfect steam trap

    Consider a variety of factors to select a unit that comes the closest. What steam traps lack in size, they make up for in numbers. In a typical steam plant, their numbers range from several hundred in a large steam plant to more than 20,000 in refinery or chemical complexes.

    Stephen Frank, Richards Industries, Inc.
    01/11/2007
  • Understand and Control Hot Vapor Bypass

    Contributing Editor Andrew Sloley says pressure control technique works well if implemented properly, in this month's Plant InSites column.

    Andrew Sloley, contributing editor
    01/08/2007
  • 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
  • Succeed at bioprocess scale-up

    While fermentation-based syntheses were once reserved for producing high-value specialty chemicals and biopharmaceuticals, bioprocess routes now are gaining increasing attention for commodity products.

    John L. Shaw, P.E., and Scott A. Rogers, P.E., CH2MHill Lockwood Greene
    08/28/2006
  • Product stewardship takes a grave turn

    European Union mandates have impacted products produced and sold in the U.S., and will ultimately affect the chemical industry, according to Editor in Chief Mark Rosenzweig.

    Mark Rosenzweig, Editor in Chief
    08/17/2006
  • 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
  • Pilot plants: destined for development

    Pilot plants are on the verge of an unprecedented evolution. Read about the 10 factors that'll impact the design, construction and operation of these next-generation units.

    Richard Palluzi, ExxonMobil Research and Engineering Co.
    06/28/2006
  • Check out before you start up

    In his monthly Field Notes column, Senior Editor Dirk Willard reveals that regardless of the preparation, check-out tests always bring out some surprises.

    Dirk Willard, senior editor
    02/28/2006
  • Disposable equipment makes lasting gains

    Biopharmaceutical producers and others are turning more to single-use units. Is this a good idea for your plant?

    Alan S. Brown, contributing editor
    02/06/2006
  • Don'’t let a start-up finish you off

    Dirk Willard spent years as a "start-up" engineer. He advises that proper planning is crucial for achieving a happy ending.

    Dirk Willard, senior editor
    01/24/2006
  • Process Hazard Analysis: Collar hazards with a Bow-Tie

    A flexible, graphical method offers many advantages for initial process hazard analyses. Read here for a detailed explanation of the Bow-Tie method.

    Jack Philley, Baker Engineering and Risk Consultants, Inc.
    01/23/2006
  • Maintenance diagnostics get a makeover

    Plants increasingly are outsourcing these vital services, lured by larger vendors and broader capabilities.

    Alan S. Brown, contributing editor
    12/12/2005
  • Design Methods for Reflux Condensers

    Reflux condensers have become increasingly important to eliminate condensable organic components from plant off-gas streams and meet environmental requirements. Recognizing this need, HTRI conducted an experimental and analytical study in the late 90s to predict flooding, as well as heat transfer and pressure drop in vertical intube reflux condensers.

    Zhi Hua (Frank) Yang
    12/01/2005
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