zhangjiagang 17s commerce co.,ltd
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Dust Filter Bags For Bag House And Dust Collectors With Various Choices
1. specification
Dust Filter bags are made of needled felt. Scrim is the middle layer of felt, both sides of scrim are fibers, and then by needle stitching processing make the felt. According to the working conditions felt should do some finishing treatment. And then cut, sew, inspect and pack with related procedure to complete the filter bags to meet different working conditions.
Optional fabric: PE (Polyester), PP (Polypropylene), PA (Nylon), Aramid(Nomex), Acrylic, Fiberglass, PPS, PTFE, P84, etc
Finish Treatment: Singeing, Calendering, Heat Setting, Anti-static, Water&Oil Repellent, PTFE Membrane, PTFE Impregnation and so on
Bag Style: round bags, oval bags, 8 and 12 star/ pleats star bags
Bag Size: it is up to the CPO and installation and customized
Bag Head: seal cuff / groove snap / felt strip, bead cuff/ steel strip, etc can be chosen
Bag Body: Sewing or Hot sealing
Bag Bottom: Single or double bottom, with reinforcement or without reinforcement
Construction of Filter Bags
| Style | Size | Felt/ Fabric | Body | Head | Bottom Layer | Reinforcement |
| Round, Oval, Star/pleat | Customized | Various Options | Sewing or Hot Sealing | Seal Cuff, Bead Cuff | Single Or Double | With Or Without |
2. How To Choose Filter Bags
Main Features of the various filter bags
| Polypropylene | Polyester | Homopolymer Acrylic | PPS | Aramid | P84 | PTFE | Fiberglass | ||
| Continuous Dry Heat Operation | 94℃ | 135℃ | 135℃ | 190℃ | 204℃ | 240℃ | 260℃ | 260℃ | |
| Continuous Moist Heat Operation | 94℃ | 94℃ | 125℃ | 190℃ | 177℃ | 195℃ | 260℃ | 260℃ | |
| Max Short Term Dry Heat | 107℃ | 150℃ | 150℃ | 232℃ | 240℃ | 260℃ | 290℃ 4 | 290℃ | |
| Specific Density | 0.9 | 1.38 | 1.17 | 1.38 | 1.38 | 1.41 | 2.3 | 2.54 | |
| Moisture Regain (20℃ and 65% r.humidity) | 0.10% | 0.40% | 1% | 0.60% | 4.50% | 3% | 0% | 0% | |
| Supports Combustion | yes | yes | yes | no | no | no | no | no | |
| Resistance | Biological (mildew, bacteria) | excellent | not effect | very good | not effect | not effect | not effect | not effect | not effect |
| Alkalis | excellent | fair | fair | excellent | good | fair | excellent | fair | |
| Mineral Acids | excellent | fair | very good | excellent | fair | very good 3 | excellent | very good | |
| Organic Acids | excellent | fair | excellent | excellent | fair | very good 3 | excellent | very good | |
| Oxidising Agents | good 1 | good | good | fair 2 | poor | very good | excellent | excellent | |
| Organic Solvents | excellent | good | very good | excellent | very good | excellent | excellent | very good | |
1) Polypropylene is attacked by UV light, and will dimensionally deform under unsupported load over 82℃
2) PPS is attacked by strong oxidising agents (O2, NOx, Br2) – the presence of which, lower its recommended operating temperature
3) P84 is attacked by Sox in power station applications
4) PTFE will elongate under load at elevated temperature
3. Applications of the filter bag in the bag house
| Plant | Star Bag Material | Application | |||||
| Aluminium Plant | PE | electrolysis fume | |||||
| PPS | aluminum hydroxide calcination | ||||||
| Cement Plant | PE | cement mill, crushing macine, leather belt etc | |||||
| PE with antistatic | coal mill | ||||||
| P84 | kiln back end | ||||||
| Meta aramid | kiln head | ||||||
| Power Sation | PPS | boiler tail gas | |||||
| Steel Plant | PE | casting house, ore bunker, sintering machine end, finished product transportation | |||||
| Acrylic | slag differential | ||||||
| Meta aramid | rotary furnace | ||||||
| PPS/Acrylic | sintering machine head | ||||||
| Chemical Plant | PTFE , Meta aramid | high temperature and corrosive confition | |||||
| Nonferrous Metal Smelt Plant | P84 | aluminum metlting, copper furnace, gold smelt etc | |||||
| Carbon Black Plant | PE, PE with PTFE lamination | grinder machine | |||||
| Glass Plant | PTFE, PTFE composited P84 bag | ||||||
4. Package
| Packaging Detail | Carton+Pallet , Polybag+ Pallet, or according to requirments |
| Delivery | Normally 30 days after depsoit and PO placed |
| Shipping Terms | FOB Shanghai, CIF delivery port |
