Advanced Hot Gas Filtration Solution
Innovation in Filtration

Powfrax® Ceramic Fiber Filter

For Low, Medium & High Temperature Industrial Applications

A revolutionary ceramic dust removal technology achieving ≥99% efficiency, replacing traditional fabric bag filters, cyclone separators, and electrostatic precipitators.

Product Overview

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.

Warranty & Lifespan

5-year warranty, with a service life of up to 8-10 years under specific conditions.

Temperature Series

HT200 Low-Temperature

< 200°C
(impregnated waterproof layer filter)

HT600 Medium-Temperature

200 - 600°C

HT900 High-Temperature

600 - 900°C

Key Features

High porosity (>80%)
High strength
Low resistance (<300 Pa)
Ultra-long service life
High efficiency
High Temperature Resistance
Fully replaces ESP
Fully replaces bag filters

Video

Technology Details

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.

Ceramic Integrated Technology

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.

Typical Usage: Ceramic integration or adsorbent conditioning + ceramic fiber filter + medium-low temperature SCR catalyst system process.

High-Temperature Superiority: Especially for high-temperature scenarios of 600-900°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.

Technical Specifications

Raw Material Composition

Customized High-Alumina Ceramic Fiber

Chemical Composition

  • Al2O3 > 45-48%, SiO2 > 51-54%
  • Al2O3 + SiO2 > 99.6%
  • Na, K, Mg, Ga < 0.3%

Physical Parameters

  • Ceramic fiber diameter: 2.5-3.5 µm
  • Fiber shear ratio Bik value: 200 ± 40
  • Fiber slag ball (212µm) content: < 8-15%

Fiber Micro-Details

Ceramic fiber length distribution (sample: 10004 pieces)

Parameter Value
Arithmetic mean length 0.507 µm
Length-weighted length 0.777 µm
Total quantity 143.842 million/g
Width 8.5 µm
Thickness 0.0125 mg/m

Additional parameters: Twist angle 127°, Twist fiber content 17.0%, Curvature 7.8%, Strand Brushing Length Ratio 0.831%, Broken Fiber Ratio 6.67%, Fines length ratio 61.8%.

Ultrafiltration Characteristics

Over 100 layers of filter paper | Nanoporous technology

  • Axial stacking weaving forming process using centrifugal force through an internal mold.
  • Porosity > 85%, hole size 25-45 nm.
  • Ultra-low resistance: pressure drop < 260 Pa per meter per minute.
  • Enhanced flange strength and reinforced structure for longer service life.

Production Process

  1. Raw material quality inspection and trial production
  2. Fiber raw cotton shear drying (patented technology)
  3. Molding production (centrifugal stacking, >100 layers)
  4. Drying stage (15-20 hours low-temperature)
  5. Grinding and hardening stage
  6. Quality inspection at each stage

Each batch is tested for strength, pressure difference, porosity, density, appearance, and dimensions. Full traceability and quality reports.

ceramic filter specification.png

Our Customers & Projects

Since 2017, we have implemented over 50 glass furnace ceramic integrated flue gas purification projects for renowned companies including:

Wuliangye (Yibin) Shandong Pharmaceutical Glass Sichuan University of Science & Technology Anhui Shengshi Shandong Luzhong Shandong Jingyao Glass Luzhou Huasheng

Innovative Project #1

"Luzhou Liquor Industry" three-line air glass melting furnace - The first third-party operation project in China for daily glass furnace air pollution control adopting an "investment + operation" model.

Innovative Project #2

"Sichuan University of Science and Technology" full-oxygen glass melting furnace - The first environmental protection project in China to use ceramic filter tubes + SCR denitrification technology for full-oxygen glass melting furnaces.

Ready to Optimize Your Filtration System?

Contact our engineering team for a detailed analysis of your working conditions and a custom solution proposal.