Plastic Random Packing

it was invented by south china university of technology. Unique conjugated curve finned structure can change point-to-point contacting instead of linear contacting between packing. Therefore, it promote liquid evenly distribution, avoid packing overlapping phenomenon and increase liquid gathering & dispersing etc..

This is an improved pall ring. The main improvement is to increase the turning over and wall thickness at both ends. Without changing the separation efficiency, the bed height can be reduced. So as to reduce the pressure drop..

It was developed by British company MTL Ltd, which also called CMR. Metal Cascade Ring is a new type of bulk packaging with the advantages of high capacity,good stain resistance and low pressure drop.Its sides have one or two beveled edges, which have hhigher mechanical strength and better gas passage than pall rings.Metal cascade rings feature a rectangular opening,curved leaves,tapered edges, and reduced height

It also called Heilex ring, crown-type raschig ring and so on. It is a new type of Perforated Packing. Wavy gas-liquid interface enlarges liquid’ s contacting area and also improve gas-liquid flow efficiency. In addition, interlacing cone type vertical structure can largely reduce towers’ packing nesting, wall flow and unevenly distribution.  

Hiflow Ring is a 3rd generation high performance tower packing which provides an optimal design of high mechanical stability, void fraction and superior mass transfer performance.  

It was invented by Koch-glitsch. Inner arc tabs will increase uninterrupted flows of gas and liquid while providing additional drip points to enhance liquid film surface renewal for improved mass and heat transfe.

It is a earliest development of random packing, which its height is equal to outside diameter. Raschig Ring was invented by German Chemist Friedrich Raschig in 1914, it also marks that the development of fills hds entered a scientific track. However, in the actual application, Such as ” Wall flow, Channel flow and so on” often happened in Packed bed.  

Plastic snowflake ring is a high-effciency tower packing which was named byb its shape.lt has a low specifc gravity, high flooding point, large porosity, high mass transfer unit height.Besides, this random packing has lower pressure drop, which reduces the back-pressure phenomenon and minimizes the energy consumption of the stripping process.Plastic snowflake ring is very economical.it can be applied in the chlorine and bromine production,air separation and water cooing process.  

Flat ring is also called SMR(Super Mini Ring), It s an advanced random packing in the column tower packing. It has similar structure with cascade mini ring, There is not flanging structure at the top and bottom. It can improve the packing strength through adjust the arc of internal blade. It has reasonable flow structure, low pressure drop and high mass transfer performance. Super mini ring has two main types, which names as QH-1 and QH-2.  

It was one improved ring based on Intalox ring’ s structure. The biggest improvement is that Intalox saddle’ s arc profile will be change wavy or jagged profile. meanwhile, increase some pores in the arc liquid channel’ s middle position. This structure’ s change not only increase packing’ s contacting gap, but also improve gas & liquid’ s movement and distribution in packing layer

  { "@context": "https://schema.org", "@type": "Product", "name": "PP Teller Rosette Ring - Polypropylene Random Tower Packing", "description": "PP Teller Rosette Ring (Polypropylene) in 25mm, 47mm, and 51mm sizes. High void fraction up to 98%, excellent corrosion resistance for acid gas scrubbing, FGD, and chemical absorption towers.", "brand": {"@type": "Brand", "name": "FXSINO"}, "sku": "FS-PP-TRR", "image": "/storage/uploads/images/202608/21/IMG_PP_TELLER_HERO.jpg" } Figure 1: PP Teller Rosette Ring — radial small-ring construction for maximum gas-liquid contact. PP Teller Rosette Ring: Cost-Effective Random Packing for Corrosive Service Product Highlight: The PP Teller Rosette Ring delivers void fractions up to 98% with bulk densities as low as 90 kg/m³. Its three-dimensional radial geometry eliminates channeling and wall-flow, making it the economical choice for FGD scrubbers, acid gas absorption, and chemical separation towers. 1. What Is the PP Teller Rosette Ring? The Teller Rosette Ring is a proprietary random tower packing consisting of multiple small rings arranged radially into a flattened spherical body. When molded from Polypropylene (PP), it becomes a lightweight, corrosion-resistant, and highly cost-effective solution for gas-liquid contacting in neutral to mildly aggressive chemical environments. The open radial structure ensures uniform liquid distribution across the entire tower cross-section, significantly reducing the risk of channeling that plagues conventional ring packings. Figure 2: Radial small-ring arrangement eliminates dead zones and promotes uniform wetting. 2. Technical Specifications PP Teller Rosette Rings are available in three standard sizes. Key performance data is shown below: Dimensions (mm) Surface Area (m²/m³) Void Fraction (%) Bulk Number (pcs/m³) Bulk Density (kg/m³) 25 × 9 195 82 170,000 90 47 × 19 185 88 32,500 111 51 × 19 180 98 23,500 — Material: Polypropylene (PP). Service temperature range: -60°C to 150°C (consult factory for high-temperature applications above 100°C). 3. Key Performance Advantages Why Choose PP Teller Rosette Over Standard Random Packings? Ultra-High Void Fraction (up to 98%): The open radial framework minimizes gas flow resistance, allowing higher throughput at lower pressure drop than Pall rings or saddle rings. No Channeling or Wall-Flow: Three-dimensional geometry forces liquid to spread evenly, maximizing effective wetting area and mass transfer efficiency. Excellent Chemical Resistance: PP withstands most inorganic acids, alkalis, and salt solutions at moderate temperatures. Lightweight: Bulk density of just 90–111 kg/m³ reduces structural load on tower supports and makes handling effortless. Cost-Effective: Injection-molded PP offers the lowest total installed cost among all corrosion-resistant random packings. 4. Primary Applications • Flue Gas Desulfurization (FGD): SO2 and SO3 absorption scrubbers in power plants and refineries. • Acid Gas Scrubbing: HCl, Cl2, and H2S removal from exhaust streams. • Chemical Processing: Neutralization towers, salt recovery, and general-purpose absorption columns. • Chlor-Alkali: Brine purification and chlorine washing systems. • Gas & Oil: CO2 and H2S sweetening, gas cooling, and dehydration. Figure 3: PP Teller Rosette Rings in a flue gas desulfurization (FGD) scrubber tower. 5. Quick FAQ Q: What is the maximum operating temperature for PP Teller Rosette Rings? A: Standard PP grades are rated up to 100°C. For service between 100°C and 150°C, we recommend RPP (reinforced polypropylene) or switching to PVDF. For highly oxidizing acids at any temperature, PTFE is the correct choice. Q: How many pieces do I need for my tower? A: Use the bulk number from the table above. For example, a 2 m ID tower with 3 m bed height of 51mm rings: π × 1² × 3 × 23,500 ≈ 221,700 pieces. Contact us with your tower dimensions for a precise quote. Q: Can PP Teller Rosette Rings handle hot concentrated acids? A: PP is suitable for most cold-to-warm acid services but degrades in hot concentrated H2SO4 or HNO3. For aggressive acid gas at elevated temperatures, we recommend PTFE or ceramic packings. Our engineers can help you select the right material. Request a Quote for PP Teller Rosette Rings FXSINO supplies PP Teller Rosette Rings in 25mm, 47mm, and 51mm with full material traceability and competitive factory-direct pricing. Send us your tower ID, bed height, and process conditions for a customized offer. Contact FXSINO: jackieqiu9202@gmail.com | +86 18507999558

  { "@context": "https://schema.org", "@type": "Product", "name": "PTFE Pall Ring - Teflon Random Tower Packing", "description": "PTFE (Teflon) Pall Rings in 25mm, 38mm, 50mm, and 76mm sizes. Universal chemical resistance for aggressive acid gas scrubbing, distillation, and ultra-pure applications.", "brand": {"@type": "Brand", "name": "FXSINO"}, "sku": "FS-PTFE-PR", "image": "/storage/uploads/images/202608/21/IMG_PTFE_PALL_HERO.jpg" } Figure 1: PTFE Pall Ring — universal chemical resistance for aggressive service. PTFE Pall Ring: Teflon Random Packing for Aggressive Service Engineering Alert: When your process involves concentrated H2SO4, HNO3, HF, or ultra-pure pharma streams, standard PP/PVC or even metal packings will fail. PTFE (Teflon) Pall Rings deliver near-universal inertness with continuous service up to 260°C. 1. What Is a PTFE Pall Ring? The Pall Ring is a second-generation random tower packing with windows stamped from the cylinder wall and tongues bent inward. Made from PTFE (Polytetrafluoroethylene, branded as Teflon), this variant combines the proven hydraulic performance of the Pall Ring geometry with the most chemically inert polymer known to industry. Figure 2: Internal window structure maximizes gas-liquid contact area. 2. Technical Specifications Size (mm) Void Space (%) Surface Area (m²/m³) Bulk Number (pcs/m³) Bulk Density (kg/m³) 25 × 25 × 2 93.4 219 60,000 450 38 × 38 × 2.5 94.6 165 15,800 420 50 × 50 × 4 94.5 108 6,800 450 76 × 76 × 4 92.0 73 2,000 300 3. Why PTFE Over PP, PVC, or Metal? Chemical Resistance Comparison Media PP PVC SS316L PTFE Conc. H2SO4 (> 70%) × ✓ × ✓ Hydrofluoric Acid (HF) ✓ × × ✓ HNO3 (fuming) × × × ✓ NaOH (hot, conc.) × ✓ ✓ ✓ Max Temperature 100°C 60°C 425°C 260°C 4. Key Performance Features Universal Chemical Inertness: Unaffected by virtually all industrial chemicals—acids, bases, solvents, and halogens. Non-Stick Surface: Extremely low coefficient of friction (0.05-0.10) prevents polymer buildup and fouling. High-Temperature Service: Continuous rating up to 260°C (500°F)—far above any other thermoplastic. Ultra-Pure Compatible: Zero extractables—meets USP Class VI and FDA requirements for pharma and semiconductor applications. 5. Primary Applications PTFE Pall Rings are specified wherever chemical aggression or purity demands rule out all other materials: • Acid Gas Scrubbing: HF, fuming H2SO4, HNO3 absorption towers • Chlorination Systems: Cl2 drying and compression where wet chlorine attacks metals • Pharmaceutical API: Solvent recovery and distillation under cGMP ultra-pure conditions • Semiconductor: High-purity acid distribution and exhaust abatement • Nuclear & Fluorochemical: Handling of UF6, HF, and other highly aggressive fluorinated compounds Figure 3: PTFE Pall Rings in an acid gas scrubber for HF and chlorine service. 6. Quick FAQ Q: Is PTFE stronger than metal at high temperatures? A: No. PTFE's tensile strength decreases above 200°C. For high-pressure, high-temperature corrosive service, consider PTFE-lined metal or graphite packings. We can advise based on your operating envelope. Q: Can PTFE Pall Rings handle vacuum distillation? A: Yes. The Pall Ring geometry performs well under vacuum, and PTFE's low outgassing makes it suitable for high-vacuum pharmaceutical separations. Q: How does bulk density compare to ceramic or metal? A: PTFE bulk density is 300-450 kg/m³—much lighter than ceramic (~700 kg/m³) or metal (~400-500 kg/m³). This reduces tower support structure requirements but means higher piece counts per cubic meter. Need PTFE Pall Rings for Your Corrosive Service? FXSINO supplies PTFE Pall Rings in 25mm, 38mm, 50mm, and 76mm with full material traceability (MTC to ASTM D4894). Send us your process conditions for a customized recommendation and quote. Contact FXSINO: jackieqiu9202@gmail.com | +86 18507999558