Systems Components - Baghouse Filters / Electrostatic Precipitators (ESP) /
Scrubbers /Cyclones

Baghouse Filters

Baghouse Filters
Baghouse Filters
Baghouse Filters
Baghouse Filters

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 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 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 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).

Baghouse Filters
Back to Top

Electrostatic Precipitators (ESP)

Dust laden gases that are created in the production process can be efficiently removed with the aid of an Electrostatic Precipitator (ESP). ESP’s typically collect 95% of the dust from the gas stream.

Precipitators function by electrostatically charging the dust particles in the gas stream. The charged particles are then attracted to and deposited on plates or other collection devices. When enough dust has accumulated, the collectors are shaken to dislodge the dust, causing it to fall to hoppers below. The dust is then removed by a Mechanical Conveying System for disposal or recycling.

Important parameters in precipitator performance include:

  • Gas flow rate
  • Particle size and size distribution
  • Particle resistance
  • Gas temperature

Call Vortex to discuss which piece of equipment is ideally suited to your needs.

Back to Top

Scrubbers

The Vortex range of wet gas scrubbers provide a range of options from venturi scrubbers, spray tower scrubbers, packed bed scrubbers and combinations to suit almost any application. Whether it be SO2, particulate or acids that need to be removed Vortex have a solution to meet your requirements.

Each type of scrubber offers its own particular benefits:

Venturi scrubbers; are used extensively where sub-micron dust particles or extremely high collection efficiencies are involved. The vertical gas inlet design allows for water distribution without the use of spray nozzles. Without spray nozzles, up to 10% by weight solids concentration can be suspended in the recirculation slurry without plugging or abrasion problems.

Spray tower scrubbers; are low energy scrubbers. Contacting power is much lower than in venturi scrubbers and the pressure drops across such systems are generally less. The collection efficiency for small particles is correspondingly lower than that of more energy-intensive devices. They are adequate for the collection of coarse particles larger than 10 to 25 µm in diameter, although with increased liquid inlet nozzle pressures, particles with diameters of 2.0 µm can be collected.

Packed bed scrubbers; are designed to remove corrosive fumes and noxious gases from industrial and chemical processes and air ventilation systems. It protects both plant facilities and the health of personnel. For efficient absorption of these fumes and gases by a scrubbing liquid, a large surface contact area is needed. Packing offers this broad surface.

Contact Vortex Engineering for assistance in selection of the appropriate scrubber for your application.

Scrubbers
Back to Top

Cyclones

Cyclones
Cyclones
Cyclones
Cyclones

Vortex Engineering has a range of high efficiency cyclones ranging in size from Ø300 up to Ø3200 (0.15-18.8m3/s) which are capable of handling a wide range of materials and particulates.

The Vortex high efficiency cyclones use the centrifugal forces generated in the cyclone to separate the material/particulate from the air stream.

Cyclones are used to remove the bulk of the material or particulate from the airstream and when used in conjunction with the Vortex Pulse Jet Baghouse can achieve extremely good results in terms of particulate emissions from a system.

One application for a cyclone is at the end of a Pneumatic Conveying line situated above a boiler. This allows the boiler Fuel Storage Bin to be located some distance away in a convenient location and for the fuel to be pneumatically conveyed directly to the boiler without adding excess amounts of air to the boiler.

Cyclones
Back to Top