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    CONTACT US
    QUESTIONS? CONTACT US

    Crystar® FT Ceramic Membrane Filters

    How will you deal with produced water?


    Silicon Carbide Membrane Filters (Water Treatment)

    From public outcry about the environmental impact of fracking, to disposal regulations, limited number of disposal wells, and trucking and infrastructure issues, the focus on water recycling is becoming more critical than ever.
     
    Water resources are becoming scarce. Cost effective water recycling is critical to the success of the expanding global fracking oil and gas activities. 
     

    Using advanced silicon carbide membranes from Saint-Gobain significantly reduces the equipment footprint, capital costs, shortens the water treatment process and reduces chemical usage.  

    Saint-Gobain is a worldwide leader in combining material and forming process expertise with application understanding to offer standard and customized ceramic membranes for challenging liquid filtration applications.
     

    Crystar® FT ceramic membrane filters from Saint-Gobain offer longer life, corrosion and erosion resistance and the highest flux of any membranes on the market.


    Advanced silicon carbide membranes from Saint-Gobain can remove total suspended solids, hydrocarbons (oil) and bacteria.

    Crystar® FT filters offer the highest flux of any membrane materials. 

    Advanced silicon carbide membranes are chemically robust, and abrasion and erosion resistant. These membranes can be run in high temperature conditions and exhibit minimal fouling. Membranes can be cleaned in place to maintain consistent flux. This results in consistent output, reduced maintenance, and lower equipment and labor costs.

    Ceramic filter applications.


    • Applications that involve extreme conditions, such as extreme high temperatures, pressures or pressure pulses and high corrosive solvents such as strong acids or lyes.
    • Filtration of media containing abrasive particles or for high solids bulk processes.

    Features and Benefits

    Customers can benefit from Using Crystar® FT ceramic filters instead of Al2O3 or polymer systems.


     

    • Excellent corrosion resistance vs. concentrated lyes and acids
    • Ability to withstand high frequency backpulsing cycles
    • Thermal stability up to 1000°C in air
    • High chemical and pH compatibility
    • Excellent permeability and ability to handle high solid concentration, e.g. SiC slurries with up to 75% solid content
    • Easy cleaning by a variety of methods, e.g. thermal and chemical treatment or back pressure pulses
    • High pressure stability
    • Long operational life
    • High flux
     

    Performance of RSiC membrane systems compared to Al2O3 systems.


        Temperature (°C) Crystar® FT Filters Al2O3
    NaOH       50% 100 ++ --
    HCL          25% 70 ++ --
    HNO3          100% 100 ++ -
    H2SO4       98% 95 + --
    HF        50% 50 + -

     

    Specifications

    Crystar® filter technology (CFT):  Ceramic filters are made of recrystallized SiC (RSiC).


     Crystar® FT ceramic filters are typically made of:

     

    A multilayer membrane that is the functional layer for the different filtration processes A carrier material, whose particular features are the high porosity and large pores (D50>25 micron), that provide excellent permeability

    Multilayer Membrane (Water Treatment)

    Carrier Material (Water Treatment)

    Specifications


    Typical properties of Crystar® FT (Carrier material)
    SiC content ≥ 99%
    Chemical resistance 0 to 14 PH value
    Maximum application temperature < 1000°C (in air)
    Porosity ≥ 40%
    Thermal expansion (20° - 1100°C) 4.8 K-1*10-6
    Pore size ≥ 30 micron
    Flux (carrier)* 140 m3/m2*/bar/h
    Back pulse pressure max. 6 bar
    Cracking pressure > 100 bar
    Tolerable transmembrane pressure max. 6 bar
    Filter area (Ø = 32 mm, L = 1000 mm) 0.42 m2
    Weight < 1000 g/m
    * Area of filter carrier:  tube of Ø 30.5 mm (mean Ø of outer wall)

     

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