As the asphalt industry has worked to assist with the Environmental Protection Agency’s (EPA) strict guidelines for protecting the air we breathe, it has developed better and better dust collection practices over the decades. Today asphalt producers pave their yards and original equipment manufacturers (OEMs) offer a variety of dust suppression systems to keep things clean around the plant. Readers are, of course, also familiar with the baghouse that captures particulates from the airstream during mix production and returns the fines to the drum for reuse, making the industry not only clean, but environmentally responsible when it comes to material use. The team at CWMF has a unique aspect to offer with its baghouse, the Dust-Eater®.
Here’s how it works.
The airstream from the dryer enters the inlet knockout area, which the manufacturer states is the largest in the industry at 7-foot by 10-foot by 12-foot. Here, a series of deflectors and louvers minimize the amount of +200 mesh fines can enter the bag chamber.
When the airstream carries the finer particulate into the bag chamber, the use of space assists in cleaning. First, fine particles collect on the bags. A hose less valve manifold is mounted directly on the plenum. A pulse sends the shock of air into the house for cleaning.
Once the pulse hits, large bag centers allow each dust-laden bag to drop its dust to the removal point. The smooth interior wall surface eliminates air turbulence, thus minimizing bag abrasion.
The 20 inches of clearance between the wall and the bag perimeter allows air movement for equal air distribution and balanced filtration.
An auger in the base of the baghouse moves fallen dust to an exit point where it is carried back to the drum for reintroduction to production.
For more information, contact Travis Mick at (877) 457-3938 or visit www.CWMFasphalt.com.