Products Description
High-temperature furnace dust collector filter bags are used in industrial baghouse systems where hot gas, fine dust and continuous cleaning cycles place higher demands on the filter media.
Unlike standard HVAC pocket filters, these filter bags are designed for dust collection systems used around boilers, smelting furnaces, kilns, foundries, waste treatment lines and other high-temperature industrial processes.
For this type of product, the correct selection depends on more than size. Gas temperature, dust type, moisture, chemical composition, cleaning method, baghouse structure and required service life all need to be checked before production.
ZOSLONG can supply custom filter bags according to your existing baghouse drawing, old bag sample or filter bag list.
Send Inquiry
Please send the bag diameter, length, material requirement, top and bottom design, dust type, working temperature and cleaning method. We will help review whether the selected structure matches your project conditions.
Why Furnace Filter Bags Need Careful Selection
Furnace and boiler dust collection systems often operate under more difficult conditions than normal ventilation systems.
Common challenges include:
•Higher gas temperature
•Fine and abrasive dust
•Moisture or condensation risk
•Acidic or alkaline gas components
•Frequent pulse-jet or mechanical cleaning
•Limited shutdown time for replacement
•Strict fit requirements inside the baghouse
Using the wrong filter bag may cause early media damage, high pressure drop, poor dust release, bag deformation or leakage around the bag top.
That is why we do not recommend choosing this product only by price or by a simple "high-temperature bag" description. The working conditions must be checked before confirming the media and sewing structure.
Filter Media Options
| Media Option | Typical Use Direction | Notes |
|---|---|---|
| Fiberglass | High-temperature dust collection | Often used where temperature resistance is important |
| Aramid | Industrial dust collection with heat resistance requirement | Suitable for many dry industrial dust applications |
| PPS | Flue gas and industrial dust collection | Often considered where chemical resistance is required |
| P84 | Fine dust and high-performance dust collection | Usually selected for demanding filtration conditions |
| PTFE Membrane Lamination | Better dust release and surface filtration | Used when lower emission or easier cleaning is required |
The available media and treatment should be confirmed before quotation. Different materials have different continuous temperature limits, chemical resistance and cost structures.
Top and Bottom Design
The top and bottom design must match the existing baghouse structure. A small mismatch may cause leakage, difficult installation or early failure during cleaning cycles.
Common top designs include:
•Snap band top
•Steel ring top
•Flange top
•Rope top
•Raw edge top
Customized top structure
•Common bottom designs include:
•Sewn disc bottom
•Reinforced bottom
•Double-layer bottom
•Customized bottom design
If you are replacing existing filter bags, please send photos of the old bag top, bottom and cage. This helps us confirm the correct structure before production.
Where Our Furnace Bag Filters Are Used
These Furnace bag filters shine in high-temperature, dust-heavy industrial settings-here's where they're making the biggest difference:
Industrial heating plants: From boiler rooms to large-scale heating systems, these facilities churn out high-temperature flue gas mixed with ash and grit. Our filters' 250-260°C heat resistance and abrasion-resistant media stand up to constant exposure, keeping airflow clean without breaking down.
Metalworking furnaces (steel, aluminum, etc.): Steel mills and aluminum smelters deal with molten metal byproducts-think flying steel shavings, oxide dust, and high heat. The layered fiber structure traps even fine metallic particles, while the sturdy frame holds up to frequent vibrations, reducing filter replacements in busy production lines.
Power generation facilities (coal-fired, waste-to-energy): Coal-fired boilers spew hot, corrosive soot and sulfide particles; waste incinerators produce complex, high-temperature fumes. Our stainless steel frame option resists corrosion here, while the high dust-holding capacity (8kg/m²/hour) means fewer shutdowns for filter swaps-critical for keeping power output steady.
Other high-heat dust zones: Think foundries, ceramic kilns, or chemical processing furnaces, where temperatures spike and dust (like silica or chemical residues) threatens equipment and air quality. The filters' low wind resistance ensures systems don't waste energy, even under heavy use.
And so on......
Manufacturing and Quality Control
For industrial filter bags, manufacturing consistency is important because the bags must fit the cage and tube sheet correctly.
Our production and inspection process may include:
Media confirmation
Fabric cutting
Top structure preparation
Bag body sewing
Bottom reinforcement
Seam inspection
Size inspection
Top and bottom fitting check
Label and quantity check
Packing inspection before shipment
For project orders, we can mark filter bags by size, baghouse area, customer item code or replacement list.
Information Needed Before Quotation
To avoid incorrect selection, please provide as much of the following information as possible:
1.Bag diameter
2.Bag length
3.Quantity
4.Current filter media, if known
5.Dust type
6.Gas temperature: normal working temperature and peak temperature
7.Moisture condition
8.Acid or alkaline gas condition, if known
9.Baghouse cleaning method: pulse-jet, reverse-air or shaker
10.Top design and bottom design
11.Cage size and structure
12.Required surface treatment
13.Destination country and delivery requirement
14.Photos or drawings of existing filter bags
If you do not know the material, you can send old bag photos, working temperature and application details. Our team can help review the basic selection direction.
Customer Support & After-Sales Service
I'm always here to help you with any questions or issues post-purchase. We stand by our filters and offer timely support to make sure you're satisfied and your furnace runs cleanly and efficiently.
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