New Wet Process for Baghouse Relies on Spray Nozzles for Filter Cleaning
 Cleaner Filter Bags Reduce Emissions
Typically in baghouse operations, filter bags are kept clean via a dry process. When the filters clog, a system is energized which literally "shakes" the filters clean. The recent introduction of new washable filter bags allow for a new, more thorough wet cleaning process to be used.
PROBLEM: This pollution control OEM was designing a new baghouse system for one of its customers. Rather than using traditional fiber bags that can't get wet, the company installed new washable filter bags. They needed to design and install a spray nozzle system to clean the filter bags.
The difficulty was finding a compact spray nozzle that would provide thorough 360° coverage, because the space between each filter is only two to three inches (5.1 to 7.6 cm). The second problem was finding a spray nozzle made of a material capable of withstanding the highly corrosive environment.
SOLUTION: The solution to this problem involved specifying a nozzle most often associated with cleaning wine barrels and beer kegs. Spraying Systems Co.'s Model 23240 Compact Keg Washing Nozzle proved to be the perfect nozzle for this application.
The Compact Keg Washing Nozzle is small enough to fit through a 1-1/32" (2.6 cm) diameter hole. Two flat spray orifices are positioned to produce self-rotating force and provide side sprays for complete surface coverage. Thirty of these nozzles are strategically positioned around the perimeter of the filter baghousing and between the filter bags providing thorough cleaning.
The Compact Keg Washing Nozzles also met the second criteria of withstanding the harsh operating environment. The Compact Keg Washing Nozzle was special ordered in INCONEL® 600, a highly corrosive-resistant metal.
The new wet process utilizing nozzles for cleaning has proven to be thorough and efficient. The result is cleaner baghouse filters and reduced emissions.
INCONEL is a registered trademark of Inco Nickel Sales, Inc.
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