Metal super raschig ring is a kind of superior metal randompacking.lt can be made from carbon steel or stainless steel. The stainless steel material is available in many types, such as SS304,SS304L,SS410 and SS316.
Metal super raschig ring is characterized by high mechanica strength,good loading capacity and uniform gas-liquid distribution.lt has better loading capacity than the metal raschicring.Compared with the general random packing, its load capacity is increased by 30%. And its pressure drop is reduced by70%.Metal super raschig ring is suitable for heavy-duty packing.Due to its unique streamlined design, it performs well in avoidincdroplet formation. This type random packing has excellent masstransfer efficiency and low operating costs. lt is widely used inthe petrochemical industry, metallurgical industries, chlor-alkalindustries and chemica industries
Since Metal Mellapak was be developed & accepted by market. Scientists find Metal Corrugated plate packing was not suitable in any medium’ s requirement (acid). Furthermore, it is very hard to widely used in industry field. After that, Plastic Corrugated plate packing was born. Compared with Metal Corrugated plate packing, it has large flux, low pressure drop,large surface area and so on.
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"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"
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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
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"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"},
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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
The K2 Teller Rosette Ring is a proprietary stochastic (random) tower packing designed to deliver ultra-high mass transfer efficiency in distillation, absorption, and scrubbing applications.
K2 Teller rosette ring data:
Type
Size
Surface Area
Volid
Factor
Bulk Number
mm
m2/m3
%
m-1
pieces/m3
K2
82.5
28
95
11
5830
K3
105
31
96
9
1910
The Teller Rosette Ring (also called Koch Tellerette®) is an advanced random tower packing developed for ultra-efficient mass transfer in distillation, absorption, and stripping columns.
CPVC (Chlorinated Polyvinyl Chloride) Pall Rings are a specialized type of random tower packing designed for high-temperature and highly corrosive chemical processes. They combine the mechanical strength of PVC with enhanced thermal and chemical resistance, making them suitable for acid and alkali scrubbing, distillation, and gas absorption applications.
Crest Type Support Grid
Heavy-Duty Packing Support (Camel Hump)
Engineered with a unique wave-like (crest) profile, this support grid provides maximum free area (≥90%) to minimize pressure drop while offering superior mechanical strength to support heavy random packing beds.
Performance
Free Area: Up to 95%
Load Rating: Calculated per Project
Anti-Fouling Surface
Construction
Integral or 2-Piece Split Design
Reinforced Ribs for Stability
Material: CS, SS304, SS316L, Alloy
Engineering Service: Free Structural Calculation | Fabrication: Laser Cutting & Leveling Test | Delivery: Fast Track Available
Trough Type Liquid Distributor
Uneven liquid distribution often leads to channeling and wall flow, severely reducing the efficiency of your packed tower. Our Trough Type Liquid Distributor, a critical tower internal, utilizes a classic multi-stage gravity flow design (primary trough + secondary trough) to evenly spread the inlet liquid across the entire packing surface. With extremely low pressure drop and excellent anti-fouling capabilities, it effortlessly handles complex media with trace impurities or high viscosity, ensuring optimal gas-liquid mass transfer under all operating conditions. We offer comprehensive custom solutions directly from drawings, with a flexible MOQ of just 1 set. Feel free to provide your specific process parameters for a non-standard design.
Plastic hump supports (also called packing support grids or bed limiters) are essential components in packed columns and distillation towers, designed to distribute weight evenly and prevent packing material (such as Pall rings, Raschig rings, or structured packing) from collapsing or blocking the column's lower sections.
Key Features of Plastic Hump Supports
Material: Made from PP (Polypropylene), PVDF (Polyvinylidene Fluoride), or CPVC, selected for chemical resistance.
Design: A wave-like (hump) or grid-pattern structure that allows high open area (60-90%) for optimal fluid flow.
Function:
Supports the weight of packing media to prevent breakage.
Ensures uniform gas and liquid distribution.
Prevents packing from falling into the lower part of the column.
Corrosion Resistance: Suitable for acidic, alkaline, and organic chemical environments.
Lightweight & Easy to Install: Far more durable than metal supports in corrosive conditions.
Applications
1. Chemical & Petrochemical Industry
Distillation, absorption, and scrubbing columns for:
Sulfuric acid, nitric acid, and hydrochloric acid processes.
Gas treatment (H₂S, CO₂ removal).
Solvent recovery in pharmaceutical & agrochemical industries.
2. Water & Wastewater Treatment
Scrubber towers for removing ammonia, chlorine, and VOCs.
Cooling tower packing support to maximize heat transfer efficiency.
3. Air Pollution Control
Used in flue gas desulfurization (FGD) systems to hold random packing.
Odor control scrubbers for industrial emissions.
4. Oil & Gas Industry
Glycol dehydration towers (natural gas processing).
Amine sweetening units (removing H₂S & CO₂).
PP Tri-Pack is an innovative three-dimensional random packing made from polypropylene (PP), designed to maximize mass transfer efficiency in distillation, absorption, and stripping columns. Its unique tri-lobe (three-armed) structure provides superior liquid distribution compared to traditional Pall rings while maintaining low pressure drop.
Parameter
Value
Material
Polypropylene (PP)
Sizes Available
25mm, 50mm, 65mm, 89mm, 95mm
Bulk Density
~51kg/m³ (varies by size)
Surface Area
120-250 m²/m³
Void Fraction
93-96%
Max Temp.
70-80°C
Best for: Refineries, chemical plants, and environmental systems needing optimized performance in mild-to-moderate service conditions.