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Request Specs & QuoteIn chemical gas scrubbing, wet desulfurization, and degassing columns, mass transfer efficiency is dictated by the dynamic renewal of liquid interfacial film. The polymeric Teller Rosette Ring (commonly known as the Tellerette packing) represents an essential design milestone in eliminating localized channeling and premature liquid flooding.
Unlike cylindrical rings (such as Pall rings or Raschig rings) that depend primarily on wetted wall area, Tellerette rings utilize an intricate network of interconnected loops. As scrubbing liquor cascades over the ring’s filaments, liquid is repeatedly dispersed into microscopic droplets, accumulated at interstitial junction points, and instantly renewed without establishing stagnant puddles.
The open toroidal helix geometry delivers exceptional voidage rates—consistently exceeding 90% to 93%. This open-cell architecture drastically mitigates interstitial air turbulence, cutting dynamic system pressure drop by 40% to 60% relative to conventional saddles. Process plants achieve lower operating kilowatt loads on high-capacity induced draft scrubbers.
Conventional saddle packings and perforated metal cylinders suffer severe particulate bridging when scrubbing gases loaded with ammonium salts, silicon dioxide dust, or gypsum slurries. The flexural resilience and loop continuity of Tellerette packing prevents particulate crust buildup, ensuring run-times between scheduled maintenance shutdowns exceed 36 months.
Selecting the correct resin substrate and nominal dimensions determines mass transfer coefficients ($K_L a$), flood point thresholds, and long-term dimensional retention under aggressive acidic or caustic tower environments.
| Model / Size | Nominal D × H (mm) | Specific Surface Area ($m^2/m^3$) | Void Fraction (%) | Packing Count ($pcs/m^3$) | Dry Bulk Density ($kg/m^3$ PP) | Packing Factor ($m^{-1}$) |
|---|---|---|---|---|---|---|
| Tellerette 1-R (Small) | 25 × 10 | 210 | 90.0 | 75,000 | 82 | 115 |
| Tellerette 2-R (Standard) | 47 × 19 | 160 | 92.5 | 16,500 | 58 | 68 |
| Tellerette 3-R (High Void) | 95 × 36 | 110 | 93.5 | 2,150 | 46 | 35 |
| Tellerette 3-K (Serrated) | 98 × 38 | 125 | 93.0 | 2,050 | 48 | 38 |
| Tellerette M-Type (Micro) | 15 × 8 | 280 | 88.0 | 180,000 | 98 | 142 |
Temp Range: -10°C to 100°C (PP), up to 125°C for glass-fiber RPP.
Chemical Envelope: Exceptional resilience against aqueous caustic solutions, dilute acids, and common inorganic salts. The industrial default for municipal odor control scrubbers, ammonium hydroxide strippers, and general wet dust collection.
Temp Range: PVC up to 60°C; CPVC up to 95°C.
Chemical Envelope: Unmatched resistance to aggressive halogens, wet chlorine ($Cl_2$), hypochlorite ($NaOCl$), hydrochloric acid ($HCl$), and mixed pickling acids. Self-extinguishing fire performance meeting stringent industrial safety protocols.
Temp Range: -40°C to 150°C+ (PVDF), PFA up to 260°C.
Chemical Envelope: Fully inert to hot fuming nitric acid, concentrated sulfuric acid ($H_2SO_4$), aromatic organics, bromine, and aggressive solvents where polyolefins suffer environmental stress cracking (ESCR) or thermal creep.
Zhongtai Teller Rosette Rings are deployed across mission-critical gas treatment units where throughput reliability, zero foaming, and stringent atmospheric emission limits are mandated by environmental regulators.
In maritime Exhaust Gas Cleaning Systems (EGCS) and land-based flue gas desulfurization towers, space is strictly constrained. Tellerette 2-R provides the high gas velocity capacity required to treat sulfur dioxide ($SO_2$) emissions using alkaline seawater or caustic dosing without inducing liquid entrainment into downstream demister vanes.
Photolithography, wet bench etching, and silicon chip cleaning generate exhaust containing hydrofluoric acid ($HF$), silane, and phosphoric mists. Specially molded ultra-clean PVDF Teller Rosette Rings scrub fluorinated acids with zero trace metallic contamination, preserving air quality within class-10 cleanrooms.
High-volume chlorine gas processing facilities utilize CPVC and PVDF Rosette Rings in counter-current emergency tail-gas scrubbers. The media maintains mechanical integrity in saturated $Cl_2$, chlorine dioxide ($ClO_2$), and caustic brine environments, ensuring instant compliance during unexpected plant upsets.
Industrial effluent containing high concentrations of volatile organic compounds (VOCs), hydrogen sulfide ($H_2S$), and carbon dioxide is continuously stripped in packed towers. The interstitial droplet formation generated by Rosette rings lowers the Required Transfer Unit Height (HTU), shrinking overall vessel height by up to 25%.
Operating from the industrial manufacturing center of Pingxiang, China since 2003, Zhongtai enforces continuous batch-level quality control protocols to protect procurement teams against polymer embrittlement, wall thickness variances, and premature structural failure.
Every production batch uses 100% pure virgin polymeric granules sourced directly from certified petrochemical partners (Sinopec, Sabic, Solvay). We prohibit the use of uncertified post-consumer regrind that degrades tensile modulus and accelerates thermal fatigue inside continuous chemical columns.
Randomly selected ring clusters undergo continuous hydraulic load crush testing per ASTM D695 and Heat Deflection Temperature (HDT) verification under ASTM D648. Detailed Factory Acceptance Test (FAT) dossiers accompany all commercial maritime and overland dispatches.
To eliminate shipping volume inefficiencies, Teller Rosette Rings are packaged in heavy-gauge UV-stabilized woven super-sacks (1.0 to 1.5 $m^3$ jumbo bags) or export cartons strapped to fumigation-free ISPM-15 compliant pallets, engineered for rapid dock crane unloading.
As global chemical processing transitions toward decarbonization, zero-liquid-discharge (ZLD), and solvent-based carbon capture, our research division advances the hydrodynamic boundaries of random packing media.
Employing advanced multiphase Computational Fluid Dynamics (CFD), our next-generation Rosette rings introduce micro-grooved serrations along each toroidal filament. This micro-texture creates micro-vortices in the passing gas stream, thinning the boundary layer and elevating gas-film mass transfer rates ($K_G$) by 14%.
Polymeric surfaces naturally exhibit hydrophobic tendencies, causing liquid maldistribution at low irrigation densities. Zhongtai’s proprietary atmospheric cold plasma treatment introduces polar oxygenated functional groups to the plastic surface, dropping water contact angles below 30° for instant, uniform liquid film formation.
Amine-based solvent regeneration units for $CO_2$ capture demand high mechanical packing stability in the presence of monoethanolamine (MEA) and piperazine under cycling thermal conditions. Our modified high-density polyolefin compounds resist thermal degradation and oxidative amine attacks over years of continuous contact.
Specification-level answers covering hydraulic sizing, fouling dynamics, material compatibility, and commercial turnarounds for tower design engineers.
Complete your column revamps with our extensive factory portfolio of ceramic saddles, structured wire packings, activated desiccants, and molten foundry foam filters.
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