Catalogs >
DONALDSON >
PLEATED BAGS

PLEATED BAGS
3Pages

Catalog excerpts

PLEATED BAGS A BAGHOUSE DUST COLLECTION PROBLEM SOLVER Debbie Olson, Donaldson Torit Product Manager In tough economic climates, funds are not always available to make large capital equipment expenditures. Often the plan instead is to take yesterday’s equipment and enable it to meet today’s increased performance requirements. It is not unusual to see a baghouse dust collector that is 20, 30 or even 40 years old still in service. The problem is old collectors need to be able to keep up with the new demands and/or regulations. Current air quality standards often require better filtration efficiency than traditional 16 oz. polyester bag filters can deliver. The dusts being collected may also be so abrasive the non-woven filter media being used in the older baghouse develops holes in the bottom of the filter bags, leading to very short filter life. Pleated bags are now providing cost effective solutions for most common issues affecting baghouse dust collectors today. WHAT IS A PLEATED BAG? A pleated bag is often a long, slender filter assembly that looks more like a cartridge filter than a bag filter. The pleated bag filter media options range from spunbond polyester to PTFE membranes or nanofiber layers that optimize the efficiency, as well as many other media depending on application needs, such as a stiffened aramid media for higher temperature applications. Pleated bags have built-in cores so they replace both the filter bag and its supporting cage. Some pleated bag designs even have curved openings at their top to increase cleaning energy similar to the venturi used in some baghouse filters. Pleated bags not only look like cartridge filters, but they perform more like cartridge filters than bag filters. The pleated bag (polyester spunbond) media offers better initial efficiency and is often more durable than the polyester felt in a conventional filter bag. Additionally, the average pleated bag can incorporate much more media than the corresponding length of felt bag it replaces typically allowing replacement of felt bags with much shorter pleated bags. There are pleated bag designs for top load applications, bottom load applications, and even oval applications

Open the catalog to page 1

DONALDSON® TORIT® BENEFITS OF PLEATED BAG FILTERS IN BAGHOUSES Increased Filter Area - Pleated bag filters can provide as much as twice the filtration area per foot of filter length, so in existing equipment the increased filter media in the pleat pack design can either reduce filtration velocities or allow more total volume at the same filtration velocity. This means you may be able to run more air through existing collectors without having to add another collector or overwork current equipment. The caution here is bottom entry baghouse collectors where you may still find limits on total...

Open the catalog to page 2

DONALDSON® TORIT® Ease of Maintenance – And last but not least, when it comes to replacing filters, changing out fabric filter bags has always been an unpleasant, time consuming process. Dirty bags and cages are often a challenge to remove from the collector, and the dirty old bags still need to be stripped from the cages before new bags can be installed into the collectors. Because pleated bags replace both the bag and cage in the collector, they are often not only easier but also faster to change out. Additionally, because the pleated bags are typically much shorter than the corresponding...

Open the catalog to page 3

PLEATED BAGS 3Pages

Catalog excerpts

All DONALDSON catalogs and technical brochures

PLEATED BAGS
3Pages