Technical Advantages of Ceramic Fiber Filter: A Superior High-Temperature Dust Removal Solution
As environmental regulations tighten, industrial high-temperature flue gas treatment faces greater challenges. ZTW Technologies' ceramic fiber filter tubes, with breakthrough technology in high-temperature dust removal, are increasingly replacing traditional baghouse dust collectors, becoming the preferred solution for industries like steel, waste incineration, and more.
I. High-Temperature Resistance: Breaking Thermal Limits
- Ceramic fiber filter tubes: Made of silicon carbide ceramic material, they withstand temperatures up to 800–900°C (peak tolerance: 1,000°C), maintaining mechanical strength >20 MPa. Excellent thermal shock resistance (no damage after 100 cycles between 20–800°C).
- Baghouse dust collectors: Rely on organic fibers (e.g., PPS, PTFE) with a max tolerance of 280°C. Overheating causes bags to shrink, harden, or burn, requiring energy-intensive cooling equipment (e.g., air valves, heat exchangers).
Advantage: Direct high-temperature gas processing avoids cooling costs and adapts to fluctuating conditions.
II. Filtration Efficiency & Stability: Precision Filtering, Anti-Clogging
- Ceramic fiber filter tubes:
- Dual-layer design: Inner large-pore support (43 μm) ensures strength; outer microporous membrane (1–10 μm controllable) enables surface filtration, capturing >99.99% of 0.3 μm particles. Outlet dust concentration <5 mg/Nm³.
- Smooth surface + pulse-jet cleaning: Dust resists penetration; cleaning pressure <1,500 Pa; 98% permeability recovery post-cleaning.
- Baghouse dust collectors:
- Deep-bed filtration clogs easily, especially with sticky/humid dust. Pressure drop rises to 1,200 Pa, requiring frequent cleaning and reducing bag life to 1–2 years.
Advantage: Ceramic dust filtration offers higher precision, lower resistance, and long-term stability.
III. Multifunctional Integration: Synergistic Dust Removal and Denitrification
- Ceramic fiber filter tubes:
- Surfaces support catalysts (e.g., V₂O₅-WO₃/TiO₂), enabling simultaneous NOx reduction (>95%) and dioxin decomposition (>99%), achieving integrated "dust removal + denitrification + detoxification".
- Case study: Jinan Weiquan Biomass Power Plant reduced NOx to <50 mg/Nm³ and particulate matter to <15 mg/Nm³ post-retrofit.
- Baghouse dust collectors:
- Only remove dust; require separate SCR denitrification towers, increasing footprint by 30%. Low temperatures cause ammonium bisulfate to clog catalysts.
Advantage: Integrated design saves 50% space and avoids energy losses from multi-device setups.
IV. Economic Benefits: Longevity and Low Maintenance Costs
| Metric | Ceramic Fiber Filter Tubes | Baghouse Dust Collectors |
|---|---|---|
| Service Life | 5–8 years | 1–3 years |
| Maintenance | Annual chemical cleaning | Frequent bag replacement |
| 5-Year TCO | Low (slow depreciation) | High (replacement + downtime) |
Ceramic tubes resist acid/alkali corrosion (acid resistance >99%, alkali resistance >98%), ideal for waste incineration with HCl/SO₂ gases. Bags degrade rapidly in acidic conditions, raising replacement costs.
Future Trends
Driven by "Dual Carbon" policies, ceramic fiber filter tubes will accelerate adoption in cement kilns, biomass power, and other high-temperature sectors, leveraging their high-temperature dust removal capabilities, multifunctional integration, and smart controls (e.g., IoT-optimized cleaning).
