Guangzhou, Guangdong, China.

[email protected]

+86 135 3986 0818

Ceramic Fiber Filter Tube for High-Temperature Gas Dedusting

Non-catalyst hot gas filter
Non-catalytic ceramic fiber filter tubes (AW series) for hot gas filtration

Product Description

This hot gas filter is a rigid, porous ceramic fiber filter tube for high-temperature dedusting, formed from refractory alumina-silicate fiber and binder. It is the non-catalytic grade — for combined dust, NOx and dioxin removal, see the catalytic ceramic fiber filter.

It runs continuously at up to 600℃ with a maximum service temperature of 1000℃, so that the dedusting system doesn’t need to cool down, and can recover the heat energy directly.

In dedusting, its use method and pulse backflush cleaning method are basically the same as that of the bag filter. But its service life exceeds 5 years, which is several times longer than that of the bag filter, and it can resist acid and alkali corrosion.

Product model and size specifications

ModelUnitAW300AW500AW1000-AAW1000-BAW1500-AAW1500-BAW2000AW1950AW2400AW3000-AAW3000-B
ALengthmm300500100010001500150020001950240030003000
BInternal Diametermm11040401104011012012080120110
CExternal Diametermm150606015060150150150120150150
DFlange Diametermm190808019580195195200160195195
EFlange Thicknessmm3020203020303065303030
FFlange Shape　TTTTTTTYTTT
GSurface AreaM²0.10.20.20.480.280.7110.91.41.4
HWeightkg1.30.40.653.20.94.5555.57.58.5
Remark: It is normal for the actual size of the product to differ slightly from the above table.Please contact technical support for specific tolerance range.

Illustration: Below is Ceramic fiber filter’s dimension diagram ：

Dimensional drawing of ceramic fiber filter tube: A length, B internal diameter, C external diameter, D flange diameter, E flange thickness
Dimensional drawing: A overall length, B inner diameter, C outer diameter, D flange, E wall thickness

Application:

Thermal power plants, waste incinerators, cement kilns, metallurgical industries, brick plants, biomass boilers and other dust generated scenes

For simultaneous SOx, NOx and dioxin removal, see our catalytic ceramic fiber filter. Contact us for a quotation.

Work efficiency：

Dust residual after dedusting<5mg/Nm3

Dedusting efficiency>99.9%

Remark: The removal rate of the pollutants in the flue gas depends on the performance of the additives, as well as the design, construction, and the operation level of the equipment.

Key Specifications

Parameter Value
Filtration accuracy≥ 1 μm (dust larger than 1 micron)Max long-term operating temperature600 °C continuous / 1000 °C max (dedusting mode)
Filter resistance (room temperature)300 Pa (1 m/min, clean)Whole dedusting system resistance900–1,500 Pa
Filtration (face) velocity2 – 5 cm/sBackflush pressure0.4 – 0.7 MPa
Backflush duration / trigger≈ 0.15 s, pressure-difference triggeredDedusting efficiency>99.9%
Dust residual emission< 5 mg/Nm3Service lifeMore than 5 years (5-year written warranty)
Operating modePulse-jet cleaning, similar to baghouse layoutPhysical strengthMaintains high strength at room and high temperature without keel reinforcement

Source: Anchor Technology laboratory & field data. For project-specific selection consult our engineering team.

Manufacturing Quality Control & Material Traceability

Every production batch at Anchor Technology starts with high-purity alumina-silicate fiber (Al₂O₃ 43–47%, SiO₂ 51–55%) sourced from certified Chinese suppliers. Our automated fiber spinning line controls fiber diameter to 3–5 μm with <5% standard deviation — this uniformity is critical for achieving consistent 1 μm filtration precision. After forming and sintering at 1,250°C, each tube undergoes visual inspection, dimensional verification, and mechanical strength testing (minimum 4 MPa tensile strength, minimum 500 N radial crush resistance).

For export orders, we provide a Certificate of Analysis (COA) with each shipment documenting fiber chemical composition, dimensional measurements, porosity (>80%), and filtration efficiency results from batch sampling tests. Production runs under an ISO 9001:2015 certified quality system, and third-party inspection (SGS, BV, TÜV) before shipment is welcome.

Chemical Compatibility

Medium Compatibility Notes
Common acid gases (SOx, HCL, H2S)ResistantStandard operating envelope
Alkali dustsResistantWith standard binder
HF (hydrofluoric acid)LimitedRequires alkali-resistant coating agent
H3PO4 (phosphoric acid)LimitedRequires special agent
Na2O / K2OLimitedNo alkali agent added
Direct flame contactYesNon-combustible ceramic fiber

Field-Proven Performance in High-Temperature Dust Removal

Anchor Technology has supplied non-catalytic ceramic fiber filter tubes to 40 industrial dust collection systems since 2019, including cement kiln preheater exhausts, municipal waste incinerators and biomass power plants. In a typical cement plant retrofit we completed in 2019 (2,500 t/d clinker line, Shandong Province), our 120 ceramic tubes replaced failing glass fiber bags and maintained <3 mg/Nm³ particulate emissions for over 4 years without replacement, despite 850°C continuous operation and frequent thermal cycling from 400°C to 850°C during kiln start-ups.

Unlike fabric filter media that rely on a sticky dust cake for filtration, our rigid ceramic fiber structure provides both surface and in-depth filtration from the first minute of operation — there’s no “break-in” period. The pulse-jet cleaning cycle (typically 0.4–0.7 MPa compressed air at differential-pressure-triggered cleaning cycles) releases the dust cake cleanly because the smooth ceramic surface doesn’t trap fine particles in the fiber interstices the way woven fabrics do. This is why our customers report stable 900–1,500 Pa system pressure drop over years of operation, versus fabric bags that gradually climb to 3,000+ Pa as particles embed in the weave.

Why Source from Anchor Technology

Anchor Technology is a specialist supplier of high-temperature ceramic filtration — not a general trading house. The elements are produced on dedicated ceramic fiber lines in Jiangsu, China, and we verify every batch against specification before it ships: fiber composition, dimensions, porosity and strength. That means controlled quality, custom dimensions and chemical treatments matched to your process, and engineering support from people who work with these specifications every day. Our customers include cement groups like CNBM and Conch, waste-to-energy operators like Everbright International, and industrial boiler manufacturers across Southeast Asia and Europe.

We stock standard sizes (Φ120×1000, Φ120×2000, Φ150×2000) for immediate shipment and can deliver custom specifications in 45–60 days. For technical questions or to request a sample, contact our engineering team directly at [email protected] or WhatsApp +86 137 0305 0828. We respond to all inquiries within 24 hours on business days.

Frequently Asked Questions About Non-Catalytic Ceramic Fiber Filter Tubes

Yes. Just tell us the basics of your project — for example, where the filter tubes will be installed (a glass furnace, a waste incinerator, a biomass boiler…), the flue gas flow rate and the gas temperature. We ask for this only so we can help you select the right material, model and size for your operating conditions. Your project information is treated as strictly confidential and is never shared with anyone outside our engineering team.
No. If no information about the application can be shared, we cannot support your evaluation. Preparing a sample is real work — a dedicated colleague has to select, cut, inspect, pack and document every tube. Please respect that labour cost. And without knowing where the tubes will be used, we have no way to judge whether our product actually suits your project — sending you a random tube would only mislead your test and waste your time.
For filter tubes up to 1.5 m long, we can provide 1–2 sample pieces free of charge. 3 m tubes are not covered by the free sample policy and have to be purchased. If you need larger sizes or a larger quantity, tell us the reason — we are glad to support a serious evaluation. But if you have never handled this product and only want to “have a look”, please do not ask for many pieces at once: every sample is prepared by hand by a colleague. Take the first sample, confirm that it can work in your project, then come back for more.
The shipping cost is covered by the customer. Send us your FedEx account number together with the complete consignee details — name, address, telephone number and postal code — and we will arrange the shipment for you.
If the size you need is in stock, 3–7 days is typical. If it is out of stock and has to be produced to order, 1–2 weeks. We will prepare your samples as quickly as possible.
Yes, for hot gas filtration above 200°C. Unlike woven fabric bags that degrade above 250°C, our ceramic fiber filter tubes operate continuously at up to 600°C with peak tolerance to 1000°C while achieving >99.9% dust removal at 1 μm particle size. We’ve supplied direct replacements for baghouse retrofits in cement kilns, waste incinerators, and biomass boilers where bags failed due to temperature excursions or sparks. The main trade-off: ceramic tubes have higher initial pressure drop (300 Pa at 1 m/min) compared to new fabric bags (~50 Pa), but maintain that pressure drop far more stably over their service life of more than 5 years because the surface cake releases cleanly with each 0.4–0.7 MPa pulse-jet cycle.
It is the practical precision rating: particles at and above 1 μm are captured at >99.9%, verified by third-party testing (Guangzhou Environmental Monitoring Center). Our third-party filtration efficiency test (performed by Guangzhou Environmental Monitoring Center) showed >99.9% removal efficiency for particles ≥1 μm aerodynamic diameter. Smaller particles (0.3–1 μm) are also captured at >95% efficiency through the combined effects of cake filtration and in-depth interception. For comparison, typical fabric bags achieve ~99% at 5 μm. If your emission target is <5 mg/Nm³ particulate matter under Chinese GB 4915-2013 or EU 2010/75/EU BREF limits, our 1 μm ceramic filter tubes will meet it without additional polishing filters.
The alumino-silicate ceramic fiber substrate is resistant to most industrial acids at high temperature, including HCl, SOx, and most fluorides. However, HF (hydrogen fluoride) and concentrated H₃PO₄ (phosphoric acid) are the exceptions — they attack the SiO₂ in the fiber structure. If your process generates HF above 5 ppm or H₃PO₄ mist, we recommend either (a) neutralizing the acid gas upstream with dry sorbent injection, or (b) using our protective coating option (impregnated with acid-resistant binder) which extends HF tolerance to ~50 ppm for 2–3 years. We always test specific chemical compatibility with your gas analysis before finalizing the order — send us your gas composition report.
1000°C is the maximum service temperature; the continuous long-term rating is 600°C. Our fiber tolerates peaks toward 1000°C without structural damage, but continuous operation above 600°C gradually degrades the fiber crystalline structure and reduces mechanical strength. The practical working range we recommend is 400–1000°C. Below 250°C, you’ll need to ensure the gas stays above the acid dew point (typically 130–180°C for sulfur-containing gases) to prevent condensation corrosion on the metal housing and end caps.
Initial clean filter pressure drop is approximately 300 Pa at 1 m/min design face velocity (2–5 cm/s surface filtration rate). At operating temperature (600–800°C), gas viscosity increases roughly 2×, so expect ~200 Pa on clean filters. As the filter cakes form, pressure drop rises to a stable operating range of 900–1,500 Pa for the complete filtration system (including housing, dampers, ductwork). We recommend sizing your induced draft fan for 2500–2800 Pa total system head to maintain a safety margin. Our technical team can run detailed pressure drop calculations against your actual gas flow rate and temperature curve.
Standard production covers outer diameter Φ60–Φ200 mm and standard length up to 3,000 mm (longer on request). wall thickness of 20 mm on the standard element. Custom outside-diameter tolerance is ±2 mm; overall-length tolerance is ±20 mm. For installation into existing tube sheets or flange mounts, we machine the end surfaces to ±1 mm flatness and provide dimensional inspection reports. If you need tighter tolerances (e.g., for vacuum-sealed systems), we can precision-grind to ±0.5 mm at additional cost. Common stock sizes ship in 15–25 working days; custom specifications take 45–60 days including prototype testing.
We use triple-layer protection: (1) each filter tube is individually wrapped in foam sleeves, (2) packed in custom-fit corrugated cardboard tubes with end caps, (3) loaded into wooden crates with shock-absorbing fillers. Crates are sized to fit 20ft/40ft containers and marked with “FRAGILE — GLASS/CERAMIC” in multiple languages. We include desiccant packs to prevent moisture damage during sea transit. For LCL shipments under 5 m³, we add metal frame reinforcement. We’ve shipped to 7 countries with <0.5% breakage rate; any transit damage is covered by our standard product warranty.
Yes. For tubes up to 1.5 m long we provide 1–2 sample pieces free of charge for qualified B2B buyers — you only cover the courier cost, either on your own FedEx/DHL account or arranged by us (approximately $80–150 USD depending on destination). 3 m tubes are not covered by the free sample policy and must be purchased. Tell us where the tubes will be used, the flue gas flow rate and the gas temperature, so we can confirm the right material, model and size — your project details are kept confidential. For non-standard specifications we charge a $300–500 prototype fee, refunded against your first order over 100 pieces. Sample lead time is 3–7 days when the size is in stock, or 1–2 weeks if it has to be produced to order. Every sample shipment includes a copy of our third-party filtration test report and the material safety data sheet (MSDS).

Technical Datasheet (PDF)

Download the complete technical datasheet for engineering selection: dimensional drawings, pressure-drop curves, model-to-cloth-area mapping, mechanical-load curves and chemical compatibility reference.

Request the PDF datasheet  We will reply within 1 business day with the PDF and a sizing recommendation.

Common questions answered in our technical FAQ and working principle pages.