Powfrax ® Dust Removal Ceramic Fiber Filter Element
for Low, Medium, High Temperature
Application: Industrial furnace exhaust gas dedusting, ultra-low dust purification, and acidic component removal.
Performance: Dust removal efficiency ≥ 99% (typical particulate emission concentration < 5 mg/Nm3, minimum can be < 1 mg/Nm3).
Temperature：
- HT200 Low-Temperature Series: <200°C (impregnated waterproof layer filter)
- HT600 Medium-Temperature Series: 200-600°C
- HT1000 High-Temperature Series: 800-1000°C
Features: High porosity (>85%), high strength, low resistance (<260pa per meter per minute), ultra-long service life. Fully replaces electrostatic precipitators and fabric bag filters.
Warranty: 5 years, with a service life of up to 8-10 years under specific conditions.
Typical Usage: Ceramic integration or adsorbent conditioning + ceramic fiber filter + medium-low temperature SCR catalyst system process
The Powfrax ceramic fiber filter from ZTW is a new ceramic dust removal technology that replaces traditional fabric bag filters, cyclone separators, and electrostatic precipitators. It addresses the issues of easy blockage and high maintenance costs of traditional baghouse filters. Thanks to its ultra-high porosity, gas-to-cloth ratio, and ultra-small nanoscale pores, it can achieve 99% removal of industrial dust and particulate matter including PM10, PM2.5, and PM1.0. A unique adsorbent filter cake forms on the surface of the ceramic filter tube, and through this filter cake, it can also remove over 95% of acidic components in flue gas. In flue gas treatment projects using ceramic filter tubes, the typical emission concentration of industrial dust and particulate matter is <5 mg/Nm³, and it can even reach <1 mg/Nm³. Its normal service life exceeds 5 years, and under specific conditions, it can even last for 8-10 years.
With the ceramic integrated technology, dust removal, denitrification, desulfurization, reduction of ammonia slip, removal of dioxins and other functions can be achieved simultaneously in the same system, greatly reducing the system's footprint and annual environmental protection costs.
Especially for high-temperature scenarios of 800-1000°C, the efficiency of traditional dust removal processes drops rapidly, making the ceramic fiber dust removal filter tube the optimal solution for this temperature range.。It can be widely applied in fields such as waste incineration and metallurgy.。Learn more about the manufacturing process
Customized High-Alumina Ceramic Fiber Raw Material
Chemical Composition
- 1. Al 2O 3 > 45-48%、SiO 2 > 51-54%
- 2. Al 2O 3+SiO 2 > 99.6%
- 3. Na、K、Mg、Ga < 0.3%
Physical parameters
- 1. Ceramic fiber diameter: 2.5-3.5um
- 2. Fiber shear ratio Bik value: 200±40
- 3. Fiber slag ball (212um) content: < 8-15%
Ceramic fiber length distribution
| Number of fibers | 10004 pieces | Total quantity | |
| Fiber length: Arithmetic mean and length-weighted length | 0.507um | 0.777um | 143.842 million/g |
| Width | 8.5um | ||
| Thickness | 0.0125 mg/m | ||
| Twist angle and twist fiber content | 127° | 17.0% | |
| Curvature | 7.8% | ||
| Strand Brushing Length Ratio | 0.831% | ||
| Broken Fiber Ratio | 6.67% | ||
| Fines: Length Ratio and Length Weighted Ratio | 61.8% | 55.16% | 2804.383 million/g |
| Area ratio of fine fibers | 18.98% |
Ultrafiltration characteristics: Over 100 layers of filter paper Nanoporous technology
Ceramic fiber filter adopt an axial stacking weaving forming process, utilizing centrifugal force through an internal mold forming method to evenly stack the fiber slurry layer by layer, ensuring uniform distribution of the filter tube wall thickness. The final product filter tube stacks filter paper exceeding 100 layers, significantly increasing the contact area with gas.
Production Process
Raw material quality inspection and trial production
Test parameters such as chemical composition, fiber diameter, fiber length, slag ball content, and beak value for trial production to determine production parameters.
Fiber raw cotton shear drying
Using patented original cotton shearing technology, the original cotton is cut into finished cotton less than 1mm, and quality parameters are tested to ensure the cotton quality.
Molding production
The molding production is formed by using an internal mold to centrifugally stack fiber slurry. The finished product needs to stack more than 100 layers of filter paper to ensure that the filter paper expand area of each filter tube exceeds 3 square meters.
Drying stage
After continuous low-temperature drying for 15 to 20 hours, ensuring drying quality without damaging the internal structure.
Grinding and hardening stage
Trimming the product appearance and performing two hardening operations, after multiple inspections meeting factory standards, it enters the warehouse.
Quality inspection tracking each stage
At each stage mentioned above, the quality inspection department checks the quality parameters of the finished products to ensure high-quality production. After production is completed, each batch of ceramic filter components will be tested for strength, pressure difference, porosity, density, appearance, dimensions, etc., and an inspection report will be issued. The strict quality inspection throughout the entire process not only guarantees product quality but also forms a unique, unalterable, and traceable quality report.
Ceramic Fiber Filter Parameter
Our customers
Since 2017, we have implemented over 50 glass furnace ceramic integrated flue gas purification projects for companies such as Wuliangye in Yibin, Shandong Pharmaceutical Glass, Sichuan University of Science and Technology, Anhui Shengshi, Shandong Luzhong, Shandong Jingyao Glass, and Luzhou Huasheng. Among these, the "Luzhou Liquor Industry" three-line air glass melting furnace environmental protection project is the first third-party operation project in China for daily glass furnace air pollution control adopting an "investment + operation" model. The "Sichuan University of Science and Technology" full-oxygen glass melting furnace is the first environmental protection project in China to use ceramic filter tubes + SCR denitrification technology for full-oxygen glass melting furnaces.
Ceramic Filter FAQ
Ceramic filter, on one hand, if the strength is insufficient, can lead to tube breakage, punctures, and other failures, directly affecting dust removal efficiency. On the other hand, if a large amount of binder is used or reinforcement is added to forcibly increase the strength, it will affect the porosity and gas-to-liquid ratio, impact the pore size, and directly affect dust removal efficiency, while also increasing the resistance of gas passing through the tube body. Increased resistance will not only increase power consumption but also cause the tube's full pressure difference to become larger, similarly leading to tube breakage and punctures. Powfrax® ceramic fiber filter tubes use a unique centrifugal internal mold forming process, stacking up to 100 layers of high-filter fiber filter layers, with special emphasis on strengthening key areas, offering the dual advantages of high strength and low resistance.
Flange crushing or breaking - Low flange strength
Holes in ceramic filter - Reverse blowing pressure or uneven wall thickness, poor inner wall strength
Breakage occurs 30-60cm from flange - Process defect causing low strength of ceramic filter tube 30-60cm in length
Large deviation in inner wall thickness - Process defect causing
All scenarios involving the emission of industrial dust or particulate matter are suitable, but considering working conditions and costs, ceramic filter tubes are generally most suitable for applications in
