 Solving Common Spray Problems in Chemical Processing
Hazardous Manual Cleaning of Paint Tanks Eliminated by Automatic Tank Washer
One large automotive manufacturer was facing with a physical deterrent to automated tank cleaning. The ceiling between the two floors of tanks was so low, it was physically impossible to install and remove a standard washer with a three-foot (.9 m) shaft. For years, a maintenance person cleaned approximately 20+ tanks by hand. The process took hours and exposed the worker to toxic Toluene fumes.
A special two-foot (.6 m) shaft on our 190A tank washer solved the low clearance problem. The 190A, a high-impact washer which rotates in a spherical pattern to clean all interior tank surfaces with powerful solid steam jets, was equipped with a ¼ MEG-0070 WashJet® nozzle. Because of the shorter shaft size, the paint department could now physically remove the shaft without being obstructed by the ceiling. And since the 190A is portable, it weighs under 20 pounds (9 kg), a single unit can be used to clean all the tanks.
 Specially-Constructed FloMax® Air Atomizing Nozzles Withstand Corrosive Sulfuric Acid Manufacturing Process
Air atomizing nozzles are frequently used in the re-manufacturing of sulfuric acid. The process involves burning off impurities of weak sulfuric acid in a large vessel thereby producing concentrated sulfuric acid. The manufacturing environment, the high temperatures of up to 1850°F (1010°C) and the acid result in a particularly hostile environment which is very corrosive to the spray nozzles.
We recommended the use of FloMax air atomizing nozzles made from corrosion resistant Hastelloy®. The Hastelloy FloMax nozzles significantly extend wear life over the nozzles this manufacturer used previously that were coated with a corrosion-inhibitor. Although the nozzle unit cost is higher, the savings from extended wear life more than offsets the cost of the nozzles.
 Vitreous China Manufacturer Improves Coating Process; Reduces Maintenance Time
A vitreous china manufacturer was using automatic spray nozzles to coat pottery with a ceramic glaze. The nozzles required a manual adjustment of the fan air line to achieve the proper spray pattern and distribution. However because a single line controlled both the fan air and liquid flow, any adjustment of the fan air affected the liquid flow. The manual adjustments were time consuming and problems resulted in coating uniformity.
Our VMAU Variable Automatic spray nozzles, designed for viscous spray applications, offers independent adjustment of the atomizing air, fan air and liquid flow enabling this manufacturer to quickly and easily fine-tune the spray pattern and achieve the precise coverage required. The need to shut down the line for manual adjustments was eliminated. Another benefit resulting from the change to our VMAU nozzle was further reductions in maintenance time. The nozzle is equipped with a clean-out needle that eliminated build-up and crusting problems caused by the ceramic glaze and resulted in quality issues and extra nozzle maintenance time.
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