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April: New Products International

Prevent the growth of germs in water softeners, without heat Water softeners are needed in pretreatment stages for pure-water generators, but they also harbor risks: the ionic-exchange resins offer large surface areas for the growth of microorganisms. A safe and…

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Cover Story: Move Difficult-to-Handle Bulk Materials with Flexible Screw Conveyors

Convey tough bulk materials that tend to pack, cake, smear, break apart or fluidize, and prevent separation of blended products Flexible screw conveyors are suitable for use with most bulk materials, from sub-micron powders to large pellets, both free-flowing and…

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Feature Report: The Number One Problem in a Steam System: Water Hammer

  Water hammer — a high-pressure surge or wave created by the kinetic energy of the moving liquid — is not only a system issue, but primarily a safety concern. Understanding the nature and severity of water hammer in a…

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Engineering Practice: Fired-Heater Burner Performance

  Industrial furnaces, or direct-fired heaters, are only as good as the burners that supply them with thermal energy for heat transfer and endothermic chemical reactions. This article presents equations that permit calculation of such important burner-operating characteristics as flame…

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Engineering Practice: Piping Design Part 5: Installation and Cleaning

  This fifth in a series of articles [1 – 4] on piping design discusses the practical issues of installation and cleaning. Pipe installation The installation of pipe follows its fabrication and is very frequently a part of it. The…

Focus On: Analyzers

High-resolution x-ray diffraction Based on the Medipix2 application-specific integrated circuit (ASIC), the PIXcel is designed for sensitive, high-resolution x-ray diffraction applications. Consisting of over 65,000 pixels, each 55 x 55 microns in size and with individual readout circuitry, it delivers…

Environmental Manager: A Checklist for Safer Chemical Batch Reactions

A good understanding of the reaction chemistry is needed for a safe process design It is a fact that safety-related incidents do occur in the chemical process industries (CPI). These incidents have, in part, led to increased attention to reactive-chemical…

You & Your Job: Employee Development: Getting the Information You Need Through a 360° Feedback Report  

  A 360° feedback report is a way for employees to learn how they are perceived by direct reports, colleagues, managers, customers, and strategic business partners — hence the term 360° because it generates a "full circle" of information concerning…

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Economic Indicators: Business News

Mergers and Acquisitions Siemens acquires Chemitreat Group to expand water-treatment technology March 3, 2008 — Siemens announced that it has acquired the Singapore-based private limited Chemitreat Group to expand the water-treatment business in South East Asia. Chemitreat will become part…

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Maintaining and Repairing Heat Exchanger Tubes

Tube plugging is probably the most frequently used maintenance and repair technique for the tube side of an exchanger. This article provides information on how to locate the positions of tube failures and discusses why it is important to know…