Guangzhou, Guangdong, China.

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+86 135 3986 0818

Ceramic Fiber Filter Products

Two Products, One Production Standard — Why That Matters to You

Both our standard ceramic fiber filter tubes and our catalytic DeNOx tubes are formed, fired, and inspected on the same dedicated production line in Jiangsu, China — the catalytic version simply adds catalyst coating and curing steps after the base tube is made. For you this means: identical dimensional standards (Φ60–Φ200 mm, up to 3,000 mm, ±2 mm OD / ±20 mm length tolerances), identical filtration performance at the base-tube level (1 μm precision, >99.9% dust removal), and one quality system (ISO 9001:2015) covering both. It also means switching between products, or running both in different lines of the same plant, involves no requalification of the base element — only the catalyst question needs to be settled.

Ceramic fiber filter is a porous filter which is made of refractory fiber and binder according to a certain scientific ratio. It integrates the functions of dedusting, desulfurization, denitrification, de-acid gas, de-dioxin and so on.

It runs continuously at up to 600℃ with a maximum service temperature of 1000℃, which greatly reduce many supporting equipment of desulfurization and denitrification system. And its service life is more than 5 years, backed by a 5-year written warranty.

Our Products
Non-catalyst hot gas filter
Non-catalyst Ceramic Fiber Filter
Catalytic Ceramic Fiber Filter
Catalytic Ceramic Fiber Filter

Product Comparison

Both product lines share the same high-temperature ceramic fiber (alumina and silica) base: continuous operation at up to 600°C with peaks to 1000°C, acid and alkali corrosion resistance, and a service life of more than 5 years, backed by a 5-year written warranty.

Both are supplied as rigid filter tubes — also known as hot gas filter candles or candle filter elements and cartridges — in outside diameters from Φ60 to Φ150 mm and lengths up to 3,000 mm.

FeatureNon-catalyst Ceramic Fiber FilterCatalytic Ceramic Fiber Filter
Primary functionHigh-temperature flue gas dedustingIntegrated dedusting + desulfurization + denitrification + de-acid gas + de-dioxin
Dust removal efficiency> 99.9%Integrated multi-function treatment
Residual dust after dedusting< 5 mg/Nm³—
Desulfurization & denitrification—Up to 95%
NOx emission—< 50 mg/Nm³
SO2 emission—< 30 mg/Nm³
HCl removal—Up to 97%
Dioxin removal—Up to 97%
Typical applicationsThermal power plants, waste incinerators, cement kilns, metallurgy, brick plants, biomass boilersGlass furnaces, steel furnaces, biomass boilers, thermal power plants, waste incinerators, coking plants, metallurgical smelting

A Specialist, Not a Generalist

Guangzhou Anchor Technology has specialized in high-temperature ceramic filtration since 2019 — one product family, 40+ delivered projects in 7 countries. Production runs under an ISO 9001:2015 certified quality system, and CE documentation is available for European projects. When you inquire here, your technical questions are answered by engineers who work with these specifications daily, your custom dimensions are confirmed against drawings before production, and your quality claims trace back to batch lot records. There is no intermediary layer between your specification and the factory floor — which is exactly how industrial sourcing should work.

Before You Order: What We Need From You (and What You Get From Us)

A firm quotation from us requires five inputs: flue gas flow rate, operating and peak temperature, dust loading and chemistry, emission target, and destination port. In return you get: a product recommendation with honest suitability limits, dimensional confirmation or a custom design proposal, MOQ and lead time in writing, export packaging and documentation details, and — on request — samples before volume commitment. We do not quote systems we believe will underperform. If your conditions fall outside what ceramic filtration can reliably handle (HF above 5 ppm, phosphoric acid vapor, unmanaged condensation), we will say so in the first reply rather than in a warranty dispute two years later.

Frequently Asked Questions — Product Selection

The deciding question is whether you need NOx control. If your emission permit covers particulate only, the standard ceramic fiber filter tube is the right product — same 1 μm filtration precision, >99.9% dust removal, and a 600°C continuous / 1,000°C peak rating at lower cost. If you must also reduce NOx, the catalytic version integrates a V₂O₅-TiO₂ catalyst layer into the tube wall, achieving 85–98% DeNOx within the 170–300°C reaction window — replacing a separate SCR reactor. One important check: for the catalytic version, your normal operating temperature must sit inside that 170–300°C window. Outside it, the catalyst does not react and you are paying for capability you cannot use. Tell us your permit limits and operating temperature and we will point you to the right product.
Standard diameters run from Φ60 to Φ200 mm with standard lengths up to 3,000 mm (longer on request). Dimensional tolerances are ±2 mm on outside diameter and ±20 mm on overall length. Beyond the standard range, customization of diameter, length, flange interface, and mounting hardware is routine work for us — we are a specialist supplier, not a general reseller, so non-standard dimensions do not involve a middleman’s markup or a tooling surcharge surprise. What we will not do is promise a dimension outside what the forming process can hold; if your requirement is at the edge of feasibility we will tell you and propose the closest workable design. Send a drawing or sketch with your inquiry — that is the fastest route to a firm answer and a quotation.
MOQ depends on specification — standard sizes start from a small trial quantity because we would rather you validate performance in your own system before committing to volume. For catalytic tubes, MOQ is somewhat higher because each production run involves catalyst coating and curing. Lead time for standard products is typically quoted in weeks; customized dimensions add tooling and first-article inspection time. Sea freight to major ports worldwide is standard practice for us — we have shipped to 7 countries and handle export packaging, fumigation-free crates, and documentation (commercial invoice, packing list, certificate of origin, and test reports). State your destination port in the inquiry and the quotation will include a realistic delivery window.
Ceramic elements are rigid and must be protected from point impact, so packaging is engineered accordingly: each tube is individually sleeved, separated with molded end caps and dividers, and packed in fumigation-free export crates sized for container loading. We have shipped this product by sea to 7 countries since 2019; transit damage claims are rare and, when they occur, are handled with replacement shipment. On arrival, inspect crates before signing the delivery receipt and photograph any external damage — that protects your claim. Handling guidance ships with every order: no throwing, no stacking beyond the marked limit, and store dry before installation.
Yes. We provide samples of standard-specification tubes so you can verify dimensions, fit, and material quality before committing — and we genuinely encourage it, because a filter that fits your tube sheet perfectly is the cheapest insurance in this industry. For catalytic versions, sample availability depends on current production runs; tell us your target specification and we will confirm what we can ship and at what cost. Samples ship by international express with tracking. When you are ready to move from sample to order, the sample fee handling and any volume pricing are settled transparently in the quotation.
Yes, and it comes from the engineers who make the product, not a call center. Every order ships with installation and handling instructions covering tube sheet alignment, sealing, torque guidance for mounting hardware, and the pre-coating procedure where your fuel or dust requires it. For system-level projects we support commissioning remotely — pulse pressure tuning, cleaning cycle setup, and the first-week operating checklist. If something underperforms in service, our first step is always a data review (operating temperature, velocity, pulse pressure, gas chemistry) because most field issues are specification or operating issues that can be corrected without replacing hardware. Support is available in English by email with technical replies, typically within one working day.

How to Choose

Choose the non-catalyst ceramic fiber filter when your process needs high-temperature dedusting only — thermal power plants, cement kilns, waste incinerators, metallurgy, brick plants and biomass boilers.

Choose the catalytic ceramic fiber filter when you also need to remove SOx, NOx, HCl and dioxins in a single step — glass furnaces, steel furnaces, coking plants and metallurgical smelting.

Both lines share the same AW dimensional models (AW300 to AW3000-B). See the performance & test reports page for full dimensions and test data.

Not sure which fits your flue gas? Contact us with your gas parameters and we will recommend the right model and size.

High Temperature Gas Filter Cartridges

Each ceramic fiber filter tube is, in effect, a high temperature gas filter cartridge: a self-supporting element that replaces the bag or pleated cartridge in a dust collector when the gas is too hot for textiles. High temp filters of this type handle dust-laden air and process gas at 600°C continuously, working as a high temperature dust filter and a high temperature air filter in one element, with dedusting efficiency above 99.9%. For hot gas filtration, ceramic filters of this candle design also remove the cooling stage that bag filters require, making high temperature gas filtration simpler and keeping the heat available for recovery. Even a high heat air filter duty on furnace exhaust air is covered by the same elements. In other words, a high temperature filter cartridge — or high temp cartridge filter — for gas cleaning is this rigid tube, not a pleated paper element.

Ceramic Candle Filters: The Product Family

A ceramic candle filter is a rigid, porous ceramic fiber tube — closed at one end, flanged at the other. It is the element inside every system we build, and it comes in the two grades shown above: the non-catalyst ceramic fiber filter (white tube) for high-temperature dedusting, and the catalytic ceramic fiber filter (yellow tube) with the catalyst integrated into the filter wall for combined dust, NOx and dioxin removal. Both run continuously at 600°C (1,000°C peak) with dedusting efficiency above 99.9% and residual dust below 5 mg/Nm³.

Pulse-Jet Cleaning

During filtration, dust builds a porous cake on the outer wall; that cake does much of the fine filtering. When the pressure drop reaches the set point, a short pulse of compressed air fires from the clean side and permeates outward through the wall, lifting the cake into the hopper. The element never leaves service for washing. For fine or sticky dust, a pre-coat of inert powder is applied before start-up — see the pre-coating guide.

Specifications

ItemValue
Filter mediaRefractory alumina-silicate ceramic fiber (Al₂O₃ 43–47%, SiO₂ 51–55%)
Fiber diameter3–5 μm
Outer diameter rangeΦ60–Φ150 mm
LengthUp to 3,000 mm
Operating temperature600°C continuous, 1,000°C peak
Dedusting efficiency>99.9%, residual dust <5 mg/Nm³
Clean pressure drop300 Pa at 1 m/min face velocity (element); 900–1,500 Pa for a complete system
Design face velocity1.2–3.0 m³/min per m² of filter area
CleaningPulse-jet back-blowing, in place
Typical service lifeMore than 5 years in typical duty

Candle Filter vs Filter Bag

Fabric bags fail above roughly 260°C, so a baghouse on hot gas needs a cooling stage first — extra equipment, lost heat and a larger fan. Ceramic candle filters take the gas as it comes: no cooling stage, the heat stays available for recovery, and there is no fabric to burn, hydrolyze or blind at dew point. The full comparison is on our ceramic filter vs bag filter page, and replacing an existing baghouse is covered by the baghouse retrofit checklist.

Applications, Installation and Selection

Thermal power plants, waste-to-energy and biomass boilers, cement kilns, glass furnaces, metallurgical and brick plants — see the applications page. Ceramic elements are brittle compared with fabric bags, so installation accuracy decides service life; after installation a fluorescent powder leak test verifies every seal — procedure in the installation and leak detection guide. For sizing, start from the gas stream and follow the six steps in the element selection guide.