Chemical Processing - December 2007 - (Page 33)

PROCESS PUZZLER < > February’s Puzzler A remote 200,000-gallon storage tank that feeds a stripper column has a side-mount agitator. During start-up, an engineer notices that the side of the tank is moving as if a wave were pulsing inside the tank. Inspection reveals that the agitator is installed incorrectly; the impeller pitch is for clockwise rotation. The solvents in the tank are NFPA Div. 1, Group D with suspended hazardous waste. We can’t afford to delay our start-up for six weeks, the time it would take to get a replacement impeller — a lot of expensive contractors will be waiting around unless we can find a safe way to restore agitation to the atmospheric tank. What can you propose to get our start-up back on track? Send us your comments, suggestions or solutions for this question by January 7, 2008. We’ll include as many of them as possible in the February 2008 issue and all on CP.com. Send visuals — a sketch is fine. E-mail us at ProcessPuzzler@putman.net or mail to ProcessPuzzler, Chemical Processing, 555 W. Pierce Road, Suite 301, Itasca, IL 60143. Fax: (630) 467-1120. Please include your name, title, location and company affiliation in the response. The ultimate control valve for performance & versatility. Long Lasting Innovative Solutions to make it right. Won’t Rust or Corrode Avoid Down Tme Save on Maintenance 15-Year Shell Warranty The Ranger QCT is a universal control valve. It offers versatility, adaptability and ease of maintenance in almost any application. The Ranger is designed for use in steam, chemical, gas and cryogenic liquid applications. Not Harmed by H2O Chemical Treatments Delta Cooling Towers designed the first engineered plastic (polyethylene) cooling tower in 1971. Since then we’ve improved and expanded “The Most Durable Corrosion-Proof Cooling Towers Available” to a full line, factory assembled and ready for any application. Visit us at www.deltacooling.com, or call 1.800.289.3358. The Greatest Thing Since a Delta Cooling Tower. P.O. Box 6 • Ellsworth, KS 67439-0006 Ph. (785) 472-4461 • Fax: (785) 472-3539 Innovative Solutions Cashco, Inc. www.cashco com Innovative Solutions www.chemicalprocessing.com CAS-130A.indd 1 December 2007 • 33 12/11/06 3:34:13 PM http://CP.com http://www.cashco.com http://www.deltacooling.com http://www.deltacooling.com http://www.cashco.com http://www.chemicalprocessing.com

Table of Contents Feed for the Digital Edition of Chemical Processing - December 2007

Chemical Processing - December 2007 Contents From the Editor ChemicalProcessing.com Field Notes In Process Energy Saver Compliance Advisor 2007 Vaaler Award - The Quest Ends Take Equipment Diagnostics to a New Level Better Bellows Boosts Blending Process Puzzler Plant InSites Equipment & Services Product Spotlight/Classifieds Ad Index End Point

Chemical Processing - December 2007

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