Chemical Processing - November 2007 - (Page 39)

< > The conveyor has 3-in. conveying tubes and operates at a 45° angle. An air motor powers both the conveyor and rotary valve as is common in hazardous environments. An inner-locked access panel facilitates cleaning of the internal conveyor components and a vision panel in one of the conveying tubes enables operators to determine when cleaning is required. Because the unit is self-emptying, cleaning only is necessary if there’s a build-up of a sticky or cohesive product or to avoid cross-contamination between batches. The conveyor systems consist of several evenly spaced polyurethane disks attached to a wire rope. The rope and disks travel in a continuous loop within parallel steel tubes. At each end, the rope assembly runs from one tube to the other around specially designed sprockets. One of the sprockets drives the rope and disks while the other provides tension to the rope. By maintaining the rope and disk assembly at a constant high speed, the conveyor produces an air stream that fluidizes and conveys product to the mixing vessel where the powder is centrifugally ejected. This method of conveying action allows production capacity to be ramped up or down with low energy requirements and minimal product degradation and separation. The problem of lumpy, sticky powder has been eliminated, making it a virtually worry-free operation, says Beard. “It’s a quality worry-free piece of equipment we are glad to have,” he says. “Pouring into the vessel is consistent and we find the system extremely dependable. Instead of over an hour in labor required under the old method, the same process takes under 20 minutes, is totally automatic and requires little or no supervision.” The system is virtually maintenance free, adds Beard. In the over five years since installation, the only routine maintenance required has related to cleaning and rope tensioning. a solid choice The Aero Mechanical Conveyor provides high productivity and dust-free operation. Its features include total batch transfer, flexible operation at any angle without loss of capacity, a sealed system for contaminant-free delivery and a removable housing around the conveyor for easy cleaning. Units are available to handle volumes of up to 120 tons per hour. Besides free-flowing powders such as acrylics, flour and carbon black, the system also can convey difficult materials such as titanium dioxide. In addition, it has no problem with granules, flakes or chips. CP Michel Podevyn is president and CEO of Spiroflow Systems, Inc., Charlotte, N.C. E-mail him at mjpodevyn@aol.com. www.chemicalprocessing.com Long Lasting Won’t Rust or Corrode Avoid Down Tme Save on Maintenance 15-Year Shell Warranty 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. PROTECT PUMPS • • • • Dry Running Cavitation Bearing Failure Overload • Best Sensitivity COMPACT EASY MOUNTING • Starter Door • Panel • Relay Outputs MODEL PMP-25 • Adjustable Delay Timers 4-20 MILLIAMP ANALOG OUTPUT UNIQUE RANGE FINDER SENSOR • Works on Wide Range of Motors • Simplifies Installation • Raceway • Wall TRUE POWER LOAD DISPLAY TWO ADJUSTABLE SET POINTS CALL NOW FOR YOUR FREE 30-DAY TRIAL 888-600-3247 WWW.LOADCONTROLS.COM http://www.deltacooling.com http://www.deltacooling.com http://WWW.LOADCONTROLS.COM http://www.chemicalprocessing.com

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

Chemical Processing - November 2007 Contents From the Editor ChemicalProcessing.com Field Notes In Process Energy Saver Compliance Advisor PAT isn't Standing Pat Pursue the Perfect Plant Eliminate Exchanger Tubing Troubles Portable Conveyor Speeds Paint Production Process Puzzler Plant InSites Equipment & Services Product Spotlight/Classifieds Ad Index End Point

Chemical Processing - November 2007

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