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.
How to select control valves, Part 3
When it comes to selecting and sizing control valves, gain and stability are key characteristics. The non-commercial valve selection chart in this article serves as a reference tool you can download.
Chemical Processing Vaaler Award 2007
Chemical Processing is now accepting entries for its biennial Vaaler Awards. These awards honor products and services that have significantly improved the operation and economics of chemical plants. Download an a PDF document below that details eligibility requirements, award categories, entry details, winner notification and contact information.
Making Your Process Operator-Proof
Senior Editor Dirk Willard discusses Shigeo Shingo's take on mistake-proofing, or Poke Yoke, if you speak Japanese. The practice suggests the following devices: eliminate redesign, facilitate guide, mitigate lessen the damage caused by the error, or flag identify the error.
Wal-Mart applies clout
Wal-Mart Stores, Inc., previously committed to reduce by 5% the packaging used by its 60,000 suppliers by 2013. Now, a new initiative uses a scorecard to tackle wasteful packaging.
Make jacketing your strong suit
Small details in jacketed-pipe configuration can have a big impact, according to Chemical Processing's Contributing Editor Andrew Sloley.
Gas up your sealing knowledge
As users become more familiar with gas seal technology and its advantages, gas seals are being applied to a wider variety of applications and equipment than ever before. As the seals gain in popularity know their advantages and disadvantages.
pH measurement faces acid test
Quest for more reliable readings prompts development of tougher and more-intelligent sensors. While pH control often plays a crucial role in processing, achieving reliable readings remains challenging at many sites. After all, pH sensors frequently serve in aggressive chemical environments.
Valve innovation helps with nuclear waste
Valves and actuators designed for handling radioactive waste must meet strict government requirements. This sometimes requires unconventional solutions. Such was the case at the Hanford Waste Treatment Project (WTP), Hanford, Wash.
NeSSIs success should be a lock
The New Sampling/Sensor Initiative or NeSSI that replaces tubing, fittings and other hardware in a sampling system with miniature modular components makes sense. Enhancements now in the works should assure its success.
Tiny reactors aim for big role
Process Intensification (PI) has promised many things but has it fulfilled its promises? When looking at reactor technology, the answer is a definite Yes.
Industry can do well by doing good
Ignoring climate change could eventually damage economic growth, according to an authoritative report, says Mike Spear, editor at large, in this month's End Point column. Read more on the economics of climate change.
Flowmeters clean and dirty
ControlGlobal.com contributor David W. Spitzer provides a look from a process automation perspective at how magmeters and Venturi meters are vying with ultrasonics for clean and dirty water applications.
Data validation: Jewel in the fieldbus crown?
Many users and most suppliers to the industry see process availability as the big payout benefit of Foundation Fieldbus (FF) diagnostics a good portion of it realized through data validation.
Consider changing the speed not the pump
Chemical Processing's Contributing Editor Andrew Sloley advises that instead of reflexively resorting to brute force to provide enough head, adjusting the pump speed might make for a better solution.
Avoid trouble with slurries
Handling slurries (a mix of solids and liquids), should be based on experience and experiments, not theory. Much of the knowledge obtained from pneumatic conveyors and fluidization systems can be used in understanding slurries.