Pollution control
Pulse Jet Dust Collector
Bag-filter dust collectors with reverse pulse jet cleaning, plus cyclones and multicyclones for heavy dust loads.
Our pulse jet dust collectors are fabricated in mild steel, or in a non-corrosive material where the dust being collected calls for it. They are used to take dust off process exhaust, material handling points and similar sources before the air is released or recirculated.
Where the dust loading is heavy, a cyclone or multicyclone is the usual first stage. We build these as well, and they can be combined with a bag filter when a higher level of cleaning is needed.
How it works
Dust-laden air is drawn through filter media. The dust stays on the surface of the media and the cleaned air leaves through the outlet.
The media is stitched in the form of tubes (filter bags). As dust builds up, it is removed either by manual or mechanical shaking, or by self-cleaning with a reverse pulse of compressed air.
In a pulse jet unit the bags are cleaned row by row while the remaining bags keep filtering. A sequence controller operates solenoid and pulse valves that direct the air into the manifolds. The holes are jig-drilled so that each one lines up with the venturi centre, which is what gives the pulse its cleaning effect.
Typical arrangement
General layout for this type of equipment. The final arrangement depends on your plant.
- Hood / pick-up point
- Ducting
- Dust collector
- ID fan
- Stack
Types and configurations
| Pulse jet bag filter | Automatic row-by-row cleaning with sequence controller, solenoid and pulse valves. |
|---|---|
| Shaker type | Manual or mechanical shaking of the filter media. |
| Cyclone and multicyclone | For heavy dust loading. Low maintenance and running cost. |
| Wet collector and scrubber | For dust together with toxic gases or fumes. Used in chemical, food and pharmaceutical plants. |
| Rotary air lock valve | Available on all our dust collectors for dust discharge. |
Features
- Filter media: acrylic polyester, polyester needle felt, polypropylene, nylon and terylene
- Antistatic provision made depending on the application
Maintenance
- Filter bags are consumables. The life of a bag depends on the dust, temperature and moisture, so we will ask about these when we discuss your requirement.
- A pulse jet unit needs a clean, dry compressed air supply at the right pressure for the pulse valves to work properly.
- Dust discharge (hopper, rotary air lock valve or screw) should be checked regularly so the hopper does not fill up and choke the bags.
- A rising pressure drop across the filter is the usual sign that bags need attention.
Often specified with
- ID FanInduced draft fans for boilers, furnaces, ovens and dust collectors, with heat slinger and high-temperature paint.
- Centrifugal FanSISW and DIDW centrifugal fans with backward or forward curved impellers, built to the duty you need.
- Fume ScrubberPacked bed, venturi and impinging jet wet scrubbers for process fumes and polluting gases.
Request a quote
Discuss your pulse jet dust collector requirement.
Describe your requirement or problem. Our engineers will discuss it with you on a call, visit the site where needed, and advise the right system.