Fine Chemical

Customized Metal Sintered Filtration Solutions for Fine Chemicals

Grand Filtech provides customized metal sintered filtration solutions for the fine chemical industry. Based on corrosion-resistant materials such as 316L, Hastelloy^®, Inconel^®, Monel^® and titanium, our products cover high-precision filtration from 0.1 to 100 μm, with high flux, long service life, easy regeneration, and fully enclosed safety. Suitable for continuous production scenarios with strong corrosion, high temperature, high viscosity, and high purity requirements, our solutions comprehensively improve material purity, catalyst recovery rate, and process stability, providing reliable protection for efficient and safe production in fine chemicals.

1. Core Advantages

• Corrosion Resistance: 316L / Hastelloy^® / Titanium materials, resistant to strong acids, alkalis, and organic solvents, stable at -20~800 °C, suitable for high-temperature reactions and highly corrosive systems.

• Stable Precision: Absolute precision of 0.1~100 μm, uniform pore size, filtration efficiency ≥99.9%, no fiber shedding, ensuring high-purity products.

• High Strength & Long Lifespan: Integrally sintered without binder, pressure resistance ≥0.8 MPa, impact resistant, cleanable by blowback / back-washing / chemical cleaning, service life ≥3 years.

• Low Resistance & High Flux: Sintered fiber felt porosity 85% (powder 40%), low pressure drop, suitable for high-viscosity fluids (e.g., polymer melt).

• Fully Enclosed Safety: Suitable for explosion-proof conditions, no leakage, avoiding VOC emissions and material contamination.

2. Filter Material Selection Comparison (Precision + Flux)

Filter Type	Precision Range	Core Advantages	Core Suitable Applications
Sintered Metal Powder	0.1~20 μm	Absolute precision, zero fiber shedding, high-purity filtration, ultra-high pressure resistance	Fine catalyst recovery, high-purity solvent purification, trace colloid removal
Sintered Metal Fiber Felt	1~100 μm	Double flux, low pressure drop, suitable for high-viscosity materials	Polymer melt, high-viscosity resin, high-flow liquid filtration
Multi-layer Sintered Mesh	5~200 μm	Highest mechanical strength, large dirt-holding capacity, impact resistance	High solid content slurry, pre-filtration, high-flow coarse & fine filtration
Asymmetric Sintered structure	0.1~50 μm	Surface high precision + bottom high flux, balanced performance	Backwashing automatic working conditions, continuous production filtration

3. Fine Chemical Application Selection Recommendations

Process Type	Recommended Precision	Recommended Material	Recommended Structure	Core Process Value
Hydrogenation catalyst recovery (Pd/C, Raney Ni)	0.5~5 μm	316L / Hastelloy^® C/ X	Sintered Powder/ Asymmetric	Catalyst recovery ≥95%, no contamination, automatic back-washing
PTA oxidation, acetic acid system filtration	0.1~10 μm	Hastelloy^® C/ X	Sintered Asymmetric	Resist hot acetic acid, capture Mn/Co catalyst dust, extend equipment life
Nylon / PC / polyester melt filtration	5~20 μm	316L	Sintered Fiber Felt	Low ΔP, high flux, remove gels, improve spinning quality
Epoxy / PU high-viscosity intermediates	10~30 μm	316L	Sintered Fiber Felt	Stabilize viscosity, defoam & purify, ensure coating/adhesive stability
Agrochemical / pharmaceutical high-purity intermediate purification	0.1~2 μm	316L / Titanium Alloy	Sintered Powder	No fiber shedding, meet high-purity & GMP clean requirements
Halogenation / sulfonation strong corrosive reaction fluid	1~5 μm	Hastelloy^® / Titanium Alloy	Sintered Powder	Resist Cl/F/S corrosion, prevent metal ion contamination
High-temperature heat transfer oil / process gas purification	10~50 μm	310S	Sintered Multi-layer Mesh	Resist high-temp coking blockage, protect heat exchangers & reactors
Fluidized bed gas distribution, exhaust gas dedusting	20~100 μm	310S / 316L	Sintered Plate / Sintered Mesh	Uniform gas distribution, prevent catalyst loss, meet emission standards