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Ceramic Saddle Ring:
It is a type of Ceramic Random Packing , which was formed by incessantly punching. To compare with Rasching Ring ,it has many advantages of big flux ,low pressur drop,high efficiency. Owing to the high voidage in layer of Packing and more than arc liquid-channels, it is not only reduce the air resistance through layers ,but adjust the diffusing ratio.
1.2.2 Technical parameter
| TYPICAL CHEMICAL ANALYSIS (wt. %) | Normal | For RTO |
Alumina, Al2O3 | 17-20 | 20-26 |
Alumina+SiO2 | >90 | >90 |
| Calcia,Cao | <1 | <1 |
Titania, TiO2 | <2 | <2 |
Alkalies, K2O+NaO | 1-4 | 1-4 |
Magnesia, MgO | <1 | <1 |
Leachable Iron | <0.1 | <0.1 |
Leachable Sulphur | None Detected | None Detected |
| TYPHICAL PHYSICAL PROPETIES | NORMAL | FOR RTO |
Specific gravity | 2.3 | 2.35 |
Water absorption, wt.% | <0.3 | <0.5 |
Hardness Mohs’ | 6.5 | 7-8 |
Acid resistance | >99.8 | >99.8 |
Operation temperature (max) | 1100°C | 1280-1320°C |
Thermal conductivity (w/m.k) | 0.9-1.0 | 0.9-1.0 |
Specific heat (j/kg,°C) | 850-900 | 850-900 |
Specification mm | Weight kg/m3 | Num. Pc.m3 | Surface | Free Vol % | |
Normal | For RTO | ||||
12 (1/2") | 700 | 720 | 740000 | 620 | 73 |
19 (3/4") | 660 | 690 | 230000 | 390 | 74 |
25 (1" ) | 630 | 660 | 84000 | 255 | 74 |
38 (1 1/2") | 580 | 630 | 25000 | 166 | 75 |
50 (2" ) | 570 | 600 | 9300 | 120 | 77 |
76(3" ) | 560 | 580 | 2400 | 90 | 79 |
Nominal | Size mm | Diameter of Deck mm | Outside Diameter mm | Height mm | Wall thickness mm | Width mm |
1/2" | 12mm | 12±1.0 | 20±1.4 | 10±1.0 | 2.0±0.45 | 10±2.0 |
3/4" | 19mm | 19±1.0 | 28±2.0 | 14±1.0 | 2.5±0.5 | 14±2.0 |
1" | 25mm | 25±1.5 | 38±2.0 | 19±1.0 | 3.0±0.5 | 20±2.0 |
1 1/2" | 38mm | 38±2.0 | 60±3.0 | 30±1.5 | 4.0±1.0 | 30±2.5 |
2" | 50mm | 50±2.5 | 80±4.0 | 40±2.0 | 5.0±1.0 | 40±3.0 |
3" | 76mm | 76±4.0 | 114±4.0 | 57±3.0 | 9.0±1.0 | 57±4.0 |
2. Saddle applied for RTOSaddle is used as heat transfer media in RTO equipment, with excellent character of high temperature resistance and thermal shock resistance during repeated cycling between 20°C and 820 °C. It's of much higher density, which specific gravity is 2.3-2.4g/cm3, and its average heat capacity is of 0.22 cal/g.°C between 20°C and 500°C.
Chemical Composition
| Index | SiO2 | Al2O3 | Fe2O3 | CaO | K2O+Na2O |
| Value | >70% | 23-30% | <1% | 1-2% | 2-4% |
Technical Data
size | Bulk density, lb/cuft | Bulk density, Kg/m3 | Surface area, ft2/ft3 | Surface area, m2/m3 | Void fraction(%) | Packing factor(1/ft) |
1/2" | 45 | 720 | 190 | 623 | 71.7 | 200 |
3/4" | 43 | 688 | 102 | 334 | 73 | 130 |
1" | 43 | 688 | 77 | 253 | 73 | 85 |
1.5" | 40 | 640 | 50 | 164 | 75 | 50 |
2" | 36 | 577 | 35 | 115 | 77.4 | 37 |
3" | 39 | 623 | 28 | 92 | 75.5 | 24 |
Chemical Index
| Index | Water absorption, % | Acid-resisting strength % wt. loss (ASTMc279) | Firing temperature,°C | Softening point, °C | Density, kg/m3 |
| Value | <0.5 | <4 | 1280-1320 | >1400 | 2350 |
Ceramic Saddle Ring for scrubber, dryer tower