Spray Drying Industry

Baghouse Dust Collector for the Spray Dryer Industry

AeroPulse advantages

With 35 years of dust collection experience behind them, AeroPulse baghouses are designed to provide long life and reliable service in even the most difficult applications.

Less energy for cleaning

AeroPulse baghouses use 4 1/2 inch diameter bags mounted on 7-inch centers, as opposed to most pulse-jet designs which use 6-inch bags on 8-inch centers. The 70 to 90 psi air and induced gas used to clean the bags results in a pressure of 14 to 18 inches of water at the wall of the 4 1/2 inch bags. With 6-inch bags, less cleaning energy is produced at the bag wall (typically 10 to 12 inches of water). Therefore, more compressed air is required for the same cleaning efficiency.

Better collection efficiency

The smaller AeroPulse bag design results in greater open space between bags. Therefore, for the same gas flow through the baghouse, the upward gas velocity is lower in an AeroPulse unit. This means less dust is re-entrained during the cleaning cycle. In addition, AeroPulse has pioneered the successful use of high-side inlet connections which also serve to reduce upward gas velocity. The combination of these two factors means an AeroPulse collector performs significally better in applications involving small, light-weight particulate such as carbon black.

Easier bag removal

An AeroPulse baghouse features true top bag removal. The bag assembly, consisting of bag, cage and venturi, is smaller in diameter than the tubesheet hole. This design eliminates two major problems frequently encountered when trying to remove a snap-in bag; (1) you must first remove its cage before the bag can be removed, and the bags can shrink around the cage or become corroded to the cage. Or, (2) a hole in a snap-in bag can cause the bag to fill with dust so that it is bigger than the tubesheet opening through which it must be removed. In either case, the AeroPulse design allows the assembly to be removed easily. If it is necessary to change a bag, the process is accomplished outside of the collector, then the assembly is simply reinstalled.

Longer bag life

The design of the AeroPulse venturi incorporates lugs under the tubesheet. These lugs serve to provide lateral stability, preventing bags from moving in the gas stream which can cause wear. In addition, the method used for mounting bags to cages assures a snug fit at the bottom of the cage despite variations in bag length. With this snug fit, bags wear at the bottom of the cage, as proven by the number of bags which do fail at this point.

AeroPulse pulse-jet baghouses are at work right now in over 200 spray dryer installations. They can provide you with a lower installed cost and better operating efficiencies. To find out more, contact us at the address shown below.

Key Benefits

• High efficiency means smaller package, and overall cost.
• Available in stainless steel, epoxy coated carbon steel and other finishes
• High/Full side inlet acts as drop out box reducing system pressure drop