【Must-read】Comprehensive Guide to Bulk Metal Fillers

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This post was last edited by jxkelley on 2017-4-6 at 15:11. Metal packing: 1. Metal Raschig ring packing – Metal Raschig ring packing is a typical granular type of packing that has been used in industrial applications for the longest time. It features a simple structure, is easy to manufacture, and is inexpensive; as a result, it is still widely used today. ◆ Geometric property data of metal Lasi rings: Dimensions D×H×бΦ/mm, specific surface area α in m2/m3, porosity in m3/m3, number per m3 n/m3, bulk weight (carbon steel) in kg/m3, dry packing factor α/ε3m-1. Values: 15×15×0.5 → 3500.92248000660460; 25×25×0.8 → 2200.9255000640290; 35×35×1.0 → 1500.9319000570430; 50×50×1.06 → 680.957000430130; 76×76×1.26 → 680.95187040080. 2. Metal rectangular saddle ring packing (Interox packing) ◆ Introduction to metal rectangular saddle ring packing: This is a new type of packing that was first developed by the American company Norton; it is also referred to as Interox packing in China. This type of packing cleverly combines the advantages of both ring and saddle-type packings, offering the high flux characteristic of ring packings along with the excellent liquid distribution properties of saddle-type packings. It also boasts good strength and rigidity, making it the most widely used type of bulk packing at present. ◆ Characteristic data of metal rectangular saddle ring packing (carbon steel): Packing size Φ/mm, specific surface area m2/m3, porosity m3/m3, number n/m, bulk weight (carbon steel) kg/m3: 25×20×0.6185, 0.9610, 1160, 119; 38×30×0.81, 1120, 0.9636, 600, 365; 50×40×1, 74.9, 0.9610, 400, 291; 76×60×1.25, 7.6, 0.9733, 2024, 4.7. ◆ Features: low pressure drop, high flow rate, high mass transfer efficiency, and easy operation. ◆ Applications: distillation, gas absorption, regeneration, and desorption systems. 3. Metal Baffle Ring Packing ◆ Introduction to Metal Baffle Ring Packing: Metal baffle ring packing was developed in the 1940s by the German company BASF, based on the Raschig ring packing. It is made by stamping thin metal sheets, with two rows of openings featuring inward-projecting tabs on the ring wall; each row contains five tabs that bend inward toward the center of the ring, where they almost overlap. The positions of the openings in the upper and lower layers are staggered, and the total area of these openings is generally around 35% of the total area of the ring. Due to the many window openings in the ring wall, the gas and liquid distribution within the packing layer, as well as the mass transfer performance, are significantly improved compared to Raschig rings. ◆ Features: Pall ring packing is characterized by low pressure drop, high flow rate, and high efficiency. The HYPAK packing exhibits a lower pressure drop and higher efficiency compared to PALL rings of similar size, as well as better liquid distribution within the packing layer. ◆ Material: Stainless steel, carbon steel ◆ Applications: Suitable for various separation, absorption, and desorption units, atmospheric and vacuum distillation units, ammonia synthesis decarburization and desulfurization systems, benzene separation, isooctane/benzene separation, etc. ◆ Geometric property data of metal Pall ring packing: Specification (mm), Dimensions D×H×δ (mm), Number per unit volume n/m3, Specific surface area m2/m3, Packing density γpkg/m3, Porosity m3/m3, Dry packing factor m-1. Φ16: 16×16×0.5; 241250; 339346; 0.928299. Φ25: 25×25×0.5; 490000; 219414.2; 0.934269. Φ38: 38×38×0.7; 134000; 176312; 0.945153. Φ50: 50×50×0.8; 680000; 1343110; 0.949131. Φ76: 76×76×1.19; 8096216; 0.9672. 4. Metal stepped ring packing ◆ Introduction to metal stepped ring packing: Stepped ring packing is an improved type of perforated ring packing that was developed in the early 1970s by the British company Mass Transfer Systems using value analysis techniques. This type of packing reduces the height of the ring and adds conical flanges at both ends of the ring, resulting in significantly improved performance compared to Pall ring packing. At the same liquid spray density, its critical gas velocity is 10–20% higher than that of the Bower ring ； At the same gas velocity, the pressure drop is 30–40% lower than that of the Bower ring. ◆ Geometric property data of metal stepped packing: Model specifications D×H×δ mm, specific surface area m2/m3, porosity m3/m3, particle count nm-3, bulk density γpkg/m3. Φ16: 16×8×0.442, 22.092, 0.4478, 0.000628; Φ25: 25×12.5×0.6239, 23.90, 0.9361, 0.0701, 0.0495; Φ38: 38×19×0.8154, 38.09, 0.9403, 0.1890, 0.0475; Φ50: 50×25×1.0109, 50.99, 0.9481, 0.1600, 0.0400; Φ76: 76×38×1.2730, 76.99, 0.9603, 0.6763, 0.14. 5. Metal 84 inner arc ring ◆ Introduction to metal 84 inner arc ring packing: The metal 84 inner arc ring packing is similar to the metal packing used in flower-shaped switch devices, and is also known as Müller ring packing. This type of filler is characterized by a large open area on its wall, which gives it advantages such as high flow rate, low resistance, and high mass transfer efficiency. ◆ Data on the geometric properties of metal octagonal rings: Specifications in mm – Outer diameter × Height × Thickness in mm×mm×mm; Number of rings per cubic meter: n/m3; Specific surface area in m2/m3; Packed weight in kg/m3; Porosity in m3/m3; Dry packing factor in m-1. Φ25: 25×25×0.65 → 920025042093310; Φ38: 38×38×0.61 → 400013829694.7163; Φ50: 50×50×0.87 → 00012135095144; Φ76: 76×76×1.01 → 950752809586. 6. Metal Intercross rings: Specifications in mm – Outer diameter × Height × Thickness in mm×mm×mm; Number of rings per cubic meter: n/m3; Specific surface area in m2/m3; Packed weight in kg/m3; Porosity in m3/m3; Dry packing factor in m-1. Φ25: 25×20×0.65 → 82301854090.96209.1; Φ38: 38×30×0.81 → 9680118.5118.5365126.6; Φ50: 50×40×1.09 → 80092132910.9687.7; Φ76: 76×60×1.22 → 11278244.70.9763.8. 7. Metal inwardly curved ribbed flat rings: The characteristic of these rings is that they present low resistance to fluid flow, while providing a large surface area for contact between gas and liquid phases, thereby improving the hydrodynamic and mass transfer properties of the filler. Therefore, the metal inwardly curved ribbed angular flat ring packing is a type of packing with high throughput, low pressure drop, high mass transfer efficiency, and great operational flexibility. 8. Metal conjugate ring packing: The characteristics of metal conjugate ring packing are as follows: ① When stacked in the tower, the rings do not overlap axially with one another ； ②Its internal rib structure has a conjugate shape, which is uniform within the tower; as a result, the distribution of the liquid on the surface of the packing is also uniform ； ③The large number of contact points between the inner ribs of adjacent fillers and the surface can enhance the aggregation and dispersion of the liquid as well as surface renewal. These characteristics result in low resistance to flow for metal-conjugated ring packings, while providing a large surface area for gas-liquid phase contact, thereby improving the fluid dynamic and mass transfer properties of the packings. Therefore, metal-conjugated ring packing is a type of packing with high throughput, low pressure drop, high mass transfer efficiency, and great operational flexibility. The characteristic parameters of the metal-conjugated ring fillers are shown in the table below: Parameter, Model (Height×Diameter×Thickness in mm), Specific Surface Area in m2/m3, Porosity in m3/m3, Dry Filler Factor, Bulk Density in kg/m3, Number of Fillers per m-3: 16# (23×16×0.4): 3130.96, 354211, 250340; 25# (25×25×0.6): 1850.95, 21675000, 312; 38# (38×38×0.8): 1160.96, 13119500, 296; 50# (50×50×0.8): 860.96, 979772268; 76# (76×76×0.8): 810.95, 94.53980247. www.jxkelley.com Share