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Baghouse Filters / Baghouse Dust Collector

Vortex Engineering has a large range of baghouse dust collector designs available, including pulse jet cleaning, reverse air cleaning, shaker and static baghouses. The style of baghouse design selected is based on temperature, moisture content, dust type and dust loading.

Vortex engineering also specialises in high temperature baghouse applications such as boiler emissions and gold furnaces.

It is important to select the correct cleaning method, filtration area, can velocity and filter media when selecting a baghouse.

Talk to the team at Vortex today and we’ll help you install the correct baghouse dust collector for your workplace. You’ll find us throughout New Zealand, including Auckland, Christchurch, Wellington and Dunedin.

Vortex Engineering has designed and installed baghouse filters for a diverse range of applications which include large coal fired boilers, pilot scale milk powder driers, and for extraction systems from wood planers.

Fabric dust collectors are commonly known as baghouses and for some applications are one of the most efficient and cost effective dust collector models. They use filtration to separate dust particulates from dusty gases and can achieve a collection efficiency of more than 99% for very fine particulates.

In a pulse jet baghouse dust collector, contaminated air enters the lower portion of the baghouse filter housing and passes through the highly efficient media filtration bags and out through the top of the baghouse. The filter bags are supported by a metal cage to prevent collapse. The filter bag materials are carefully selected depending on the dust to be collected and the temperature of the gases passing through the baghouse filter. Collected dust drops from the bag into the baghouse hopper and is discharged via auger and/or rotary valve to waste bins.

The high efficiency of these baghouse dust collectors is enhanced by the dust cake that forms on the surface of the bags. However, to prevent blockage, the filter must be cleaned periodically. Vortex typically uses a Pulse Jet System.

Method: A short burst of high-pressure compressed air is directed down into the clean side of a filter bag in order to remove the dust cake from the surface of the bag. The compressed air is accelerated by a venturi nozzle mounted at the top of the bag. Since the duration of the compressed air burst is short (0.1s), it acts as a rapidly moving air bubble, travelling through the entire length of the bag and causing the bag surfaces to flex. By cleaning one row of bags at a time this cleaning system can operate with airflow still going through the other bags to the exhaust fan (on-line cleaning).