1um Titanium Powder Sintered Filter For Acidic Waste Gas Treatment

Products Specifications

Products Features

Superior Acid Resistance‌
The 1um Titanium Powder Sintered Filter demonstrates unmatched corrosion resistance in acidic environments due to its pure titanium composition and binder-free sintering process. Its homogeneous microstructure withstands prolonged exposure to sulfuric, hydrochloric, and nitric acid vapors without structural degradation, outperforming polymer-based or coated metal alternatives in aggressive waste gas streams.

 

Precision Filtration Performance‌
With 1μm absolute filtration accuracy achieved through controlled particle size distribution and optimized sintering parameters, this filter ensures consistent particulate removal efficiency. The uniform pore geometry minimizes pressure drop while maintaining high dust-holding capacity, critical for industrial applications requiring stable filtration performance over extended operational cycles.

Thermal and Mechanical Stability‌

The monolithic titanium matrix retains dimensional integrity under thermal cycling up to 280°C, eliminating risks of delamination or cracking common in composite filters. Its isotropic strength distribution accommodates vibrational stresses in exhaust systems, with the M30 threaded interface providing robust mechanical sealing under fluctuating pressure conditions.

 

Sustainable Operational Economics‌

The absence of consumable components and non-degrading titanium material reduces lifecycle maintenance costs. Regenerative cleaning methods such as ultrasonic or backflushing restore filtration efficiency without damaging the sintered structure, enabling repeated use in batch processing applications.

Thermal and Mechanical Stability‌
The monolithic titanium matrix retains dimensional integrity under thermal cycling up to 280°C, eliminating risks of delamination or cracking common in composite filters. Its isotropic strength distribution accommodates vibrational stresses in exhaust systems, with the M30 threaded interface providing robust mechanical sealing under fluctuating pressure conditions.

 

Sustainable Operational Economics‌
The absence of consumable components and non-degrading titanium material reduces lifecycle maintenance costs. Regenerative cleaning methods such as ultrasonic or backflushing restore filtration efficiency without damaging the sintered structure, enabling repeated use in batch processing applications.

 

 

 

Application in Acidic Waste Gas Treatment

Semiconductor Lithography Exhaust Systems‌
The 1um Titanium Powder Sintered Filter is deployed downstream of immersion lithography tools to capture hydrofluoric acid (HF) and nitric acid (HNO₃) vapors generated during photoresist stripping. Installed in vertical exhaust stacks with M30 flange connections, it intercepts submicron acid droplets and silicon-containing particulates before gas enters centralized scrubbers.

 

Electroplating Acid Mist Control‌
In hard chromium and nickel electroplating lines, the filter integrates into slot-type ventilation hoods above plating tanks to neutralize sulfuric and hydrochloric acid mists. The 500mm cartridge length provides sufficient dwell time for coalescing acid aerosols into larger droplets, which are subsequently drained to wet scrubbers. Its titanium construction resists pitting from chloride-rich environments, outperforming polymer mist eliminators in high-current-density applications.
 

Titanium Dioxide Production Off-Gas Treatment‌
During the chloride process for TiO₂ manufacturing, the filter serves as a pre-filter in high-temperature (200–300°C) exhaust trains, removing unreacted TiCl₄ and chlorine particulates before catalytic converters. Mounted in parallel arrays within FRP housings, its sintered matrix withstands the abrasive nature of titanium oxychloride dust while maintaining <50Pa pressure drop across continuous 24/7 operation cycles.

Pickling Line Fume Extraction‌
In steel and titanium alloy pickling operations, multiple filter units are configured in series within acid-resistant PP ductwork to capture nitric-hydrofluoric mixed acid vapors. The 80mm diameter allows compact integration near process zones, while the sintered pore structure resists blinding from ferrous salt aerosols commonly found in pickling exhaust streams.

Wet Process Semiconductor Tool Hookups‌
Directly interfacing with wet bench exhaust ports in semiconductor fabs, the filter traps BOE (buffered oxide etch) and SC-1/SC-2 cleaning solution vapors. Its all-metal construction eliminates outgassing risks in vacuum-compatible tool connections, with the 1μm rating preventing backstreaming of ammonium fluoride particulates into sensitive process areas.

 

Chlor-Alkali Cell Vent Gas Polishing‌
Positioned downstream of mercury or membrane cell vents in chlor-alkali plants, the filter provides final particulate removal for hydrogen gas streams containing trace chlorine and sodium hydroxide aerosols. The titanium material's compatibility with saturated brine mist ensures long-term operation in this high-humidity, high-salinity environment.

• Sulfuric Acid (H₂SO₄) and Derivatives‌

Titanium sintered filters demonstrate exceptional resistance to sulfuric acid vapors and aerosols, particularly in TiO₂ chloride process off-gas (containing SO₂/SO₃) and lead-acid battery manufacturing exhaust systems. Their corrosion resistance to concentrated sulfuric acid surpasses polymer-based alternatives, with no risk of graphitization or embrittlement under prolonged exposure.

• Hydrochloric Acid (HCl) and Hydrogen Chloride Gas‌

Ideal for semiconductor etching exhaust and PVC production tail gas, titanium filters withstand wet chlorine gas and HCl mixtures without the swelling issues common in resin-bonded filters. The binder-free sintered structure effectively captures submicron hydrochloric acid aerosols in electroplating ventilation systems.

• Nitric Acid (HNO₃) and Nitrogen Oxides‌

In TNT production nitration reactions and metal pickling lines (stainless steel passivation), titanium filters tolerate fuming nitric acid. The sintered matrix filters metal salt particulates carried by nitric acid vapor, preventing downstream catalyst poisoning in SCR systems.

• Hydrofluoric Acid (HF) and Fluoride Gases‌

As one of few metallic filters compatible with HF, titanium sintered elements are critical in photovoltaic silicon etching and glass frosting processes (when paired with PTFE seals). The 1μm pore structure intercepts hexafluorosilicic acid (H₂SiF₆) crystals, preventing line blockages.

• Mixed Acid Gas Streams‌

For metallurgical industry exhaust (e.g., H₂SO₄-HNO₃-HF mixed fumes) and petroleum FCC sulfur-containing gases (H₂S-SO₂), titanium filters exhibit synergistic corrosion resistance. Their thermal expansion coefficient matches industrial ducting, enabling direct installation in high-temperature (≤280°C) discharge points.

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