Cordierite honeycomb ceramic filter for heat exchanger applications1
4 year ago
Cordierite honeycomb ceramic filter for heat exchanger applications
Technical Parameter:
Ceramic honeycomb used for RTO application
Cordierite is a magnesium alumina silicate material, which has very low linear expansion, low coefficient of thermal expansion and excellent resistance to thermal shock. Cordierite also offers an excellent range of mechanical strength, porosity criteria, and excels in cost-effective extruded and dry-pressed forms.
Cordierite Honeycomb Monoliths are divided into two types: porous type and compact type.
Chemical composition
| SiO2 | Al2O3 | MgO | Fe2O3 | Na2O | K2O+CaO |
| 48-50% | 37-39% | 7-9% | <1% | <1% | <2% |
Physical properties
| Index | Value |
| Gross density(g/cm3) | 2.22-2.45 |
| Average linear expansion(20-1000℃) (10-6/k-1) | <3 |
| Specific heat capacity(KJ/Kg) | 850-950 |
| Temperature cycle resistance(K) | 250 |
| Max operation Temp.(℃) | 1300 |
| Acid resistance(%) | >98 |
| Water absorption(Wt%) | <3 |
| Open porosity(%) | <3 |
| Heat conductivity(W/mk) | 1.5-2.5 |
| Mean heat storage capacity(Kwh/m3k) | 0.252 |
Technical data
| Spec. | Quantity of channels | Wall thickness (mm) | Surface area (m2/m3) | Free volume (%) | Average weight (min.) (kg/m3) |
| 150*150*300 | 60*60 | 0.5 | 1278 | 64 | 730 |
| 150*150*300 | 50*50 | 0.7 | 1050 | 58 | 814 |
| 150*150*300 | 40*40 | 0.7 | 883 | 65 | 720 |
| 150*150*300 | 33*33 | 1 | 700 | 59 | 737 |
| 150*150*300 | 25*25 | 1 | 573 | 68 | 580 |
Thermal efficiency
| Velocity (M/min) | Thermal efficiency |
Assumptions Combustion Temp. :816℃ Inlet Temp. :20℃ Section Area:7.5 m2 Bed height:1200 mm Cycle time:180 seconds |
||
| 50*50 | 33*33 | 25*25 | ||
| 60 | 95.40% | 92.40% | 91.20% | |
| 75 | 94.60% | 91.00% | 89.40% | |
| 90 | 93.90% | 89.60% | 87.60% | |
| 105 | 93.20% | 88.40% | 85.70% | |
| 120 | 92.60% | 87.20% | 83.80% | |
| 135 | 92.00% | 86.00% | 82.00% | |
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