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Crystar® FT Ceramic Membrane Filters
How will you deal with produced water?
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.
Customers can benefit from Using Crystar® FT ceramic filters instead of Al2O3 or polymer systems.
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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 | + | - |
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 |
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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) | |