Construction machine catalytic diesel engine wall flow smoke particulate filter DPF
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- Supplier: Nanning Elaiter Environmental Technologies Co. Ltd.
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Product Overview
Description
Product Description
Diesel particulate filter (DPF) is also called wall flow filter, whose materials are cordierite or silicon carbide. It adopt opening and blocking up passages in both ends and the exhaust gas flow through the porous beehive wall to filter particles, can effectively remove particulate matter(PM) and soot from diesel engine exhaust emission, its efficiency for carbon particulates filtration is more than 90%.
Diesel particulate filter can be widely used in different industrial fields such as transportation, generating units, engineering machinery and metallurgy etc. The system installed diesel particulate filter been examined for urban bus, forklift, truck & mining constructing equipment.
Advantage of diesel particulate filter
1. Low pressure drop.
2. Low coefficient of thermal expansion.
3. Good thermal shock resistance.
4. High temperature resistance, good resistance to chemical corrosion.
5. High porosity, pore size distribution uniform, high filter specific surface area.
6. Long-term durability performance.
7. High particulate trapping efficiency, suitable for all kinds of regeneration.
If you want know more things about the DPF, please contact us directly, I will do my best to service for you.
Cordierite DPF
The most common filter is made of cordierite. Cordierite filters provide excellent filtration efficiency, are relatively inexpensive (comparison with Sic wall flow filter). The major drawback is that cordierite has a relatively low melting point.
Physical & Chemical Properties of Cordierite Diesel Particulate Filter
Property (Uncatalyzed) | Technical index | ||
100/17 | 200/12 | ||
Physical Properties | Cell density | 100 CPSI | 200 CPSI |
15.5 CPSCM | 31.0 CPSCM | ||
Wall thickness | 0.017 Inch | 0.012 Inch | |
0.432 mm | 0.305 mm | ||
Open frontal area (OFA) | 34.5% | 34.5% | |
Geometric surface area (GSA) | 33.3 Inch2/L | 47.0 Inch2/L | |
1.31 m2/L | 1.85 m2/L | ||
Hydraulic diameter | 0.083 Inch | 0.059 Inch | |
2.11 mm | 1.49 mm | ||
Modulus of rupture | 350 PSI/CPSCM | 300 PSI/CPSCM | |
Apparent porosity | ≥50% | ≥50% | |
Coefficient of thermal expansion (20-800°C) | ≤1.2×10-6/°C | ≤1.2×10-6/°C | |
Compression strength in normal temperature | ≥10Mpa | ≥10Mpa | |
Mean pore size | 13 Micron | 13 Micron | |
Melting temperature | ≥1400°C | 1400°C | |
Soot-filtration efficiency | ≥95% | ≥95% | |
Chemical Composition | SiO2 | 50.9±1% | |
AL2O3 | 35.2±1% | ||
MgO | 13.9±1% | ||
Silicon Carbide DPF
Silicon carbide diesel particulate filters (Sic wall flow filters) have a higher melting point and filtration efficiency (can be up to 95%) than cordierite, they are usually more expensive than cordierite wall flow filters.
Technical data of Sic Diesel Particulate Filter
Item | Units | Technical Index |
SiC Content | % | >90 |
Cell density | CPSI | 200 |
Wall thickness | mm | 0.35-0.41 |
Cell Length | mm | 1.2-1.45 |
Apparent Porosity | % | 42-60 |
Median Pore Size | μm | 12-20 |
Transverse Compression Strength | Mpa | >2.3 |
Vertical Compression Strength | Mpa | 10-18 |
Coefficient of thermal expansion (40-800°C) | 10-6/°C | 4.3-4.4 |
Thermal Conductivity ( 500°C) | W/mK | 14-22 |
Capture Rate | % | >95 |
Bulk Density | Kg/L | 0.8 |
Filter Area | m2/L | 0.75 |
Softening Temperature | °C | 1400 |
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