The structural packing can be made of many metals. Examples of possible metals are: Stainless steels, high-Alloy steels, duplex steels, Nickel and Nickel alloys, Copper, Aluminum, Titanium, and Zirconium. Welded batch construction. Easy handling due to the fact that the parts and individual elements of the packing are welded together (instead of ties). A wide range of work performance. Flexible performance work so that the minimum performance is limited only by the design of the liquid distributor. Low liquid retention capacity. Wall flow pockets are provided with each element. Reduction of time of stay of the liquid, which minimizes the decomposition of the product. As a rule, it is one-eighth of the holding capacity of the liquid compared to the tray column. Reducing to a minimum the transmission of vapors and liquids in the near-wall zone to maximize separation efficiency.
Title | High-grade aluminum ceramics | Cordierite (an aqueous silicate of aluminum, iron and magnesium) | Dense cordierite | Mulit | Corundum mulit |
Specific density (g /cm3) | 2.0-3.0 | 1.5-1.9 | 2.1-2.5 | 2.0-2.5 | 2.3-2.7 |
Thermal stress coefficient (1 * 10-6k-1) | <5 | <3 | <3.5 | <5 | <6 |
Specific heat (J /Kg.K) 20-1000 | 900-1150 | 900-1150 | 900-1100 | 1000-1150 | 1100-1300 |
Thermal conductivity, (W /m.K) @ 20-1000 ° C | 1.5-2.0 | 1.2-1.8 | 1.5-2.5 | 1.5-2.0 | 1.5-2.5 |
Strength to thermal shock, (°C /HV) | >300 | >350 | >350 | >350 | >300 |
Maximum operating temperature, °C | 1350 | 1320 | 1320 | 1450 | 1550 |
Water absorption, % | <20 | 15-20 | <1 | 15-25 | 15-25 |
Compressive strength, Mpa | >32 | >29 | >32 | >28 | >39 |
Al2O3 | 55-65 | 28-38 | 25-38 | 60-70 | 70-80 |
SiO2 | 25-35 | 45-55 | 50-60 | 25-35 | 15-25 |
MgO | 1-3 | 11-14 | 5-10 | 0-1 | 0-2 |
Other | <5 | <5 | <5 | <5 | <5 |