Hybrid Reverse Jet/Air Bag Filters?

Well, a Google search on <... hybrid reverse jet/air bag filters...> produced about 454,000 results, so there must be a vendor in there somewhere.

Therein lies the problem perhaps. I tried the search and its thousands of people selling bag filters mostly reverse jet... so no luck. I found an interesting hybrid ESP/Bag filter and an interesting right up "The Reverse Air Rotary Baghouse is a continuous-duty, modular collector with bag-style filters. The unit is used to collect airborne dust and particulate in the asphalt plant’s exhaust gasses. The simple, reliable design efficiently handles both low and high volumes of dust and provides plant operators with value through the ability to return dust and fines to the mix. Continuous duty means the filters are cleaned in sequence, one set at a time without turning the unit off. The filter bags encompass a large filter area in a small compact housing thus keeping the air velocity through the bag to a very low level when compared to traditional pulse jet baghouses." which does suggest a hybrid may be next in their "to do" list.

Technical Fabrics (UK) Limited in Denbigh, North Wales have previously manufactured bags for me used on special purpose filtration equipment to my design. (back jet on continuous operation horizontal cyclone) I can recommend this company for good quality and professional attitude.

thank you

The ultrasonic shock wave created by the reverse jet pulse should be sufficient on it's own to dislodge dust trapped in the filter and allow it to drop under gravity into the receiving hopper. If you need to add any additional air to assist this process then the pulse jets are set up incorrectly. To save air, employ a differential pressure switch which will sense an increase in the pressure drop through the filter above a preset trigger point to initiate a single cycle of the sequencer. This will limit the use of air to only when the bags are clogged rather than the normal arrangement where the bags are continuously pulsed even when they are relatively clean. This is especially effective where the amount of dust varies widely at different times of day but where the cleaning duty cycle must always to be set to cope with the maximum load.