Tower Internals
TOTAL TOWER SOLUTIONS · Integrated design and supply of chemical packings, demisters and tower fittings — one partner from selection to internals matching
Chemical Packing
PACKING
The core element of column separation. Structured packing is represented by metal wire gauze (AX/BX/CY) and metal perforated plate corrugated packing (125Y–500Y); the CY type reaches 8–10 theoretical plates/m, close to imported performance. Random packing covers metal and plastic material series, suited to distillation, absorption, stripping and extraction services.
| Product | Type / Model | Material | Key Parameters | Typical Application |
|---|---|---|---|---|
| Metal Wire Gauze Packing | AX / BX / CY type | 304 / 316L / 2205 / TA1 | CY: 8–10 theoretical plates/m, specific surface area 250–700 m²/m³ | Precision distillation, vacuum distillation |
| Metal Perforated Plate Corrugated Packing | 125Y – 500Y (8 models) | 304 / 316L / 2205 / carbon steel | High capacity, low pressure drop, better anti-fouling than wire gauze type | Atmospheric / pressurized distillation, absorption columns |
| Mesh Corrugated Packing | Customized to column diameter | 304 / 316L | High rigidity, erosion-resistant, combines capacity and efficiency | Large absorption towers, desulfurization towers |
| Rolled Perforated Plate Corrugated Packing | Customized to column diameter | 304 / 316L | High surface roughness, good wettability | High-vacuum distillation |
| Plastic Corrugated Packing | Customized to column diameter | PP / PTFE / PVC / CPVC | Corrosion-resistant, low cost, lightweight | Acid mist absorption, flue gas desulfurization |
| Ceramic Structured Packing | Customized to column diameter | Industrial ceramic | High-temperature resistant, withstands strongly corrosive media | Sulfuric acid plants, highly corrosive services |
| Metal Random Packing | Pall Ring / Cascade Ring / Intalox Saddle DN16–DN76 | 304 / 316L / 2205 / carbon steel / aluminum | High void fraction, stable separation efficiency | Absorption, stripping, extraction columns |
| Inclined Tube Settler | Φ35 / Φ50 / Φ80 | PP / PVC / FRP | Large wetted perimeter, high settling efficiency | Water treatment, cooling towers |
| Plastic Random Packing | Pall Ring / polyhedral hollow ball / rosette | PP / PE / PVC / CPVC / PTFE | Lightweight and corrosion-resistant; hollow balls offer large specific surface area | Waste gas treatment, cooling towers, biological trickling filters |
Metal Perforated Plate Corrugated Packing — Technical Parameters (8 Models)
| Model | Crimp Height mm | Corrugation Angle | Theoretical Plates (NTSM) per m | Specific Surface Area m²/m³ | Void Fraction % | Pressure Drop MPa/m | Bulk Density kg/m³ | F-Factor m/s·(kg/m³)0.5 | Liquid Load m³/(m²·h) |
|---|---|---|---|---|---|---|---|---|---|
| 125Y | 24 | 45° | 1–1.2 | 125 | 98.5 | 2×10⁻⁴ | 85–100 | 3.0 | 0.2–100 |
| 250Y | 12 | 45° | 2–2.5 | 250 | 97 | 3×10⁻⁴ | 170–200 | 2.6 | 0.2–100 |
| 350Y | 8 | 45° | 3.5–4 | 350 | 95 | 2×10⁻⁴ | 240–280 | 2.0 | 0.2–100 |
| 500Y | 6.5 | 45° | 4–4.5 | 500 | 93 | 3×10⁻⁴ | 370–400 | 1.8 | 0.2–100 |
| 125Y | 24 | 30° | 0.8–0.9 | 125 | 98.5 | 1.4×10⁻⁴ | 85–100 | 3.5 | 0.2–100 |
| 250Y | 12 | 30° | 1.6–2 | 250 | 97 | 1.8×10⁻⁴ | 170–200 | 2.8 | 0.2–100 |
| 350Y | 8 | 30° | 2.3–2.8 | 350 | 95 | 1.3×10⁻⁴ | 240–280 | 2.2 | 0.2–100 |
| 500Y | 6.8 | 30° | 2.8–3.2 | 500 | 93 | 1.8×10⁻⁴ | 370–400 | 2.0 | 0.2–100 |
Perforated plate packing is available in diameters Ø150–12,000 mm with element heights of 50–200 mm; diameters above 1.5 m can be supplied in segments. Main materials: 304 / 316 / 2205 / TA1.
Metal Wire Gauze Corrugated Packing — Technical Parameters (AX / BX / CY)
| Model | Crimp Height mm | Specific Surface Area m²/m³ | Bulk Density kg/m³ | Corrugation Angle | HETP mm | Theoretical Plates (NTSM) per m | F-Factor m/s·(kg/m³)0.5 | Section Height m |
|---|---|---|---|---|---|---|---|---|
| 250 (AX) | 12 | 250 | 125 | 30° | 100 | 2.5–3 | 2.5–3.5 | 5 |
| 500 (BX) | 6.3 | 500 | 95 | 30° | 200 | 4–5 | 2.0–2.4 | 3–4 |
| 700 (CY) | 4.3 | 700 | 130 | 45° | — | 8–10 | 1.5–2.0 | 5 |
Wire gauze packing is used for vacuum distillation, atmospheric distillation and absorption of difficult-to-separate and heat-sensitive systems; adjacent elements are stacked with a 90° rotation. The CY type offers 8–10 theoretical plates/m, close to imported equivalents.
Mesh Corrugated Packing — Technical Parameters (SW)
| Model | Crimp Height mm | Specific Surface Area m²/m³ | Theoretical Plates (NTSM) per m | Void Fraction % | Pressure Drop MPa/m | F-Factor m/s·(kg/m³)0.5 |
|---|---|---|---|---|---|---|
| SW-1 | 4.5 | 650 | 6–8 | 92 | 2–3.5×10⁻⁴ | 1.4–2.2 |
| SW-2 | 6.5 | 450 | 4–5 | 96 | 1.6–1.8×10⁻⁴ | 2.2–4 |
Mesh corrugated packing is formed by stamping diamond-hole steel mesh — it combines the separation performance of wire gauze packing with high rigidity and erosion resistance. Main materials: stainless steel / titanium / aluminum / copper.
Rolled Perforated Plate Corrugated Packing — Technical Parameters (700Y / 500Y / 250Y)
| Model | Crimp Height mm | Specific Surface Area m²/m³ | Theoretical Plates (NTSM) per m | Pressure Drop MPa/m | F-Factor m/s·(kg/m³)0.5 |
|---|---|---|---|---|---|
| 700Y | 4.5 | 700 | 6–8 | 5–7×10⁻⁴ | 1.6 |
| 500Y | 6.3 | 500 | 4–5 | 3–4×10⁻⁴ | 2.1 |
| 250Y | 12 | 250 | 4–5 | 2–3×10⁻⁴ | 2.6 |
Rolled perforated plate packing: thin metal sheet is first rolled with dense fine perforations, then corrugated and assembled — the micro-perforated surface improves wettability, ideal for high-vacuum distillation.
Plastic Corrugated Packing — Technical Parameters (125Y–700Y)
| Model | Specific Surface Area m²/m³ | Bulk Density kg/m³ | Void Fraction % | Corrugation Angle | Pressure Drop mmHg/m | Theoretical Plates (NTSM) per m | Hydraulic Diameter mm | Liquid Load m³/(m²·h) | F-Factor m/s·(kg/m³)0.5 |
|---|---|---|---|---|---|---|---|---|---|
| 125Y | 125 | 320 | 90 | 45° | 1.8 | 1.8 | 28 | 0.2–100 | 3.0 |
| 160Y | 160 | 370 | 85 | 45° | 2 | 2 | 15 | 0.2–100 | 2.8 |
| 250Y | 250 | 420 | 80 | 45° | 2 | 2.5 | 12 | 0.2–100 | 2.6 |
| 350Y | 350 | 470 | 78 | 45° | 2.5 | 2.8 | 10 | 0.2–100 | 2.5 |
| 400Y | 400 | 500 | 75 | 45° | 3 | 3 | 7 | 0.2–100 | 2.0 |
| 450Y | 450 | 520 | 72 | 45° | 4 | 4 | 2.2 | 0.2–100 | 1.8 |
| 550Y | 550 | 620 | 74 | 45° | 5.5 | 5.6 | 6 | 0.18–100 | 1.4 |
| 700Y | 700 | 650 | 72 | 45° | 6 | 7 | 5 | 0.15–100 | 1.3 |
Plastic corrugated packing materials PP / PTFE / PVDF: PP service temperature ≤90 ℃, PVDF ≤220 ℃, PTFE -150~+250 ℃ with the strongest chemical resistance. Typical services: gas purification, fertilizer desulfurization towers, ammonia desulfurization, anaerobic biofilters (e.g. dyeing wastewater treatment).
Ceramic Corrugated Packing — Technical Parameters (SKB Series)
| Model | Crimp Height mm | Corrugation Angle | Specific Surface Area m²/m³ | Theoretical Plates (NTSM) per m | Pressure Drop Pa/m | Liquid Holdup m³/m³ | F-Factor m/s·(kg/m³)0.5 |
|---|---|---|---|---|---|---|---|
| SKB-125Y | 22 | 45° | 125 | 2–2.5 | 100 | 0.045–0.05 | 3.0 |
| SKB-250Y | 11 | 45° | 250 | 2–2.5 | 130 | 0.04–0.05 | 2.6 |
| SKB-350Y | 8 | 45° | 350 | 3.5–4 | 180 | 0.035–0.045 | — |
| SKB-125X | 22 | 30° | 125 | 0.8–0.9 | 140 | 0.045–0.05 | 3.5 |
| SKB-250X | 11 | 30° | 250 | 1.5–2 | 100 | 0.04–0.05 | 2.8 |
| SKB-350X | 8 | 30° | 350 | 2.3–2.8 | 180 | 0.035–0.045 | 2.2 |
Ceramic corrugated packing properties: specific gravity 2.4 g/cm³, water absorption ≤5%, acid resistance ≥98%, alkali resistance ≥86%, crushing strength ≥130 MPa, Mohs hardness ≥7, max operating temperature 800 ℃. The hydrophilic surface favors liquid film flow — used in sulfuric acid plants and strongly corrosive, high-temperature services.
Metal Random Packing — Technical Parameters (Common Sizes)
| Type | Size D×H×δ mm | Pieces per m³ | Specific Surface Area m²/m³ | Bulk Density kg/m³ | Void Fraction % | Dry Packing Factor m⁻¹ |
|---|---|---|---|---|---|---|
| Pall Ring | 25×25×0.3 | 51940 | 219 | 480 | 92.4 | 269 |
| 38×38×0.5 | 13000 | 176 | 365 | 94.5 | 153 | |
| 50×50×0.8 | 6800 | 134 | 311 | 94.9 | 131 | |
| Cascade Ring | 25×12.5×0.5 | 98120 | 254 | 467 | 93 | 273 |
| 38×19×0.6 | 30700 | 154.3 | 437 | 94 | 185.8 | |
| 50×25×0.8 | 11600 | 132.5 | 323.9 | 95 | 127.4 | |
| Intalox Saddle | 25×20×0.6 | 81620 | 185 | 409 | 96 | 209.1 |
| 38×30×0.8 | 35800 | 118.5 | 365 | 96 | 126.6 | |
| 50×40×1.0 | 12133 | 92.1 | 291 | 96 | 87.7 | |
| 76×60×1.2 | 2112 | 78 | 244.7 | 97 | 63.8 | |
| Conjugate Ring | 25×25×0.3 | 74985 | 243 | 361 | 95 | 216 |
| 38×38×0.5 | 19432 | 185 | 328 | 96 | 131 | |
| 50×50×0.8 | 9738 | 131 | 259 | 96 | 297 | |
| Raschig Ring | 25×25×0.8 | 55000 | 200 | 640 | 92 | 290 |
| 35×35×1.0 | 19000 | 150 | 570 | 93 | 190 | |
| 50×50×1.0 | 7000 | 110 | 430 | 95 | 130 | |
| Super Flat Ring | 25×9.0×0.6 | 160000 | 228 | 506 | 93.6 | 280 |
| 38×12.7×0.7 | 48000 | 150 | 390 | 95 | 175 | |
| 50×17×0.8 | 21500 | 115 | 275 | 96.5 | 156 | |
| Mellaring | 25×25×0.6 | 59200 | 250 | 430 | 93 | 310 |
| 38×38×0.6 | 14500 | 138 | 430 | 94.7 | 163 | |
| 50×50×0.8 | 7000 | 121 | 300 | 95 | 144 | |
| Metal IMTP | 25×20×0.6 | 101160 | 185 | 380 | 96 | 209.1 |
| 38×30×0.8 | 24680 | 124.5 | 310 | 96.8 | 126.6 | |
| 50×40×1.0 | 10160 | 79.2 | 275 | 97 | 84.7 |
Random packing materials: carbon steel, stainless steel, copper, titanium, etc.; thin walls, high void fraction, high capacity and low resistance — especially suited to vacuum distillation and heat-sensitive, easily decomposed, easily polymerized or easily coked systems.
Selling point: the CY type performs close to imported equivalents and can replace Sulzer / Koch at about 1/3 of the import price, with 4-week delivery vs 8–12 weeks for imports.
Mist Eliminators / Demisters
MIST ELIMINATOR & DEMISTERProfessional solutions for gas-liquid separation and mist removal, covering wire mesh, multi-layer pyramid and chevron vane configurations, applied in gas purification for power-plant FGD, steel pickling, petrochemical and pharmaceutical industries.
| Product | Type / Model | Material | Key Parameters | Typical Application |
|---|---|---|---|---|
| Wire Mesh Mist Eliminator | Four models: SP / DP / HP / HR Standard HG/T21618-1998 | 201 / 304 / 316 / 2205 / TA2 | High mist-removal efficiency, low pressure drop, sized to column diameter | Tops of evaporators, distillation and absorption columns |
| Metal Wire Demister Mesh | Customized to size | 201 / 304 / 316 / 2205 / TA2 | Selectable wire diameter, multi-layer stacking available | Vapor-liquid separators, flash drums |
| Non-Metal Wire Demister Mesh | Customized to size | PP / PTFE / PVDF | Glass fiber blended / plastic coating available; PTFE withstands -150~+250 °C and aqua regia | Pickling lines, highly corrosive services |
| Multi-Layer Pyramid Demister Mesh | Customized to size | 304 / 316L / PP / PTFE | ≥3 μm rating, efficiency ≥90%, pressure drop <100 Pa, washable and reusable | Power-plant FGD, wet dust removal |
| Chevron (Vane-type) Mist Eliminator | Customized plate spacing | 304 / 316L / PP / FRP | Captures ≥20 μm droplets, efficiency 90%, gas velocity 3.5–5.5 m/s, pressure drop ≤200 Pa, anti-clogging and erosion-resistant | Desulfurization towers, cooling towers, chemical exhaust gas |
Selling point: differentiated materials — PTFE withstands aqua regia; 316L resists chloride ions and lasts 2–3 years longer than 304; the multi-layer pyramid demister mesh combines high efficiency, low pressure drop and washability.
Wire Mesh Mist Eliminator — Technical Parameters (HG/T21618-1998)
| Type Code | Bulk Density kg/m³ | Specific Surface Area m²/m³ | Void Fraction ε |
|---|---|---|---|
| SP (Standard) | 168 | 529.6 | 0.9788 |
| DP (High Efficiency) | 190 | 625.5 | 0.9765 |
| HP (High Penetration) | 128 | 403.5 | 0.9839 |
| HR (High Load) | 134 | 291.6 | 0.9832 |
Operating gas velocity 0.5–0.8 m/s, pressure drop <250 Pa. Mesh materials: metal wire 201 / 304 / 316 / 2205 / TA2; non-metal wire PP / PTFE / PVDF; blended (304&PP, 304&fiberglass) and plastic-coated (304 with PP or PTFE coating) options available.
All-PTFE Wire Mesh Mist Eliminator (for Highly Corrosive Services)
All-PTFE frame and mesh, service temperature -150~+250 ℃, suitable for long-term use in virtually any chemical media: resistant to hydrofluoric acid, phosphoric acid, sulfuric acid, nitric acid, hydrochloric acid, various organic acids, organic solvents and strong oxidizers — even aqua regia (mixture of concentrated hydrochloric and nitric acids) cannot corrode it. Ideal for steel pickling lines and highly corrosive exhaust gas treatment.
Patented tower internals: ZL202220326083.3 wire-mesh corrugated demister · ZL202320753764.2 co-current corrugated structured packing · ZL202421187720.9 adjustable packing structure · Full patent list →
Tower Fittings
TOWER FITTINGSDesigned as one integrated system with our own packing, covering everything from liquid distribution to vapor collection — avoiding the efficiency loss caused by "good packing, poor distribution".
| Product | Type / Model | Material | Key Parameters | Typical Application |
|---|---|---|---|---|
| Liquid Distributor | Channel-type / Pan-type / Pipe-type | 304 / 316L | Drip point count designed to column diameter and flow rate, high distribution uniformity | Liquid redistribution in packed columns |
| Valve Tray | Customized to process | 304 / 316L / carbon steel | Wide operating flexibility, stable efficiency | Distillation and absorption in tray columns |
| Grid Support Plate | Customized to column diameter | 304 / 316L / carbon steel | High open area, strong support | Support for random packing |
| Hump support (304) | Custom per column diameter | 304 / 316L | High open area and rigidity; supports packing bed with redistribution | Desulfurization towers |
| Camel-hump Support (304) | Customized to column diameter | 304 / 316L | Camel-hump profile offers high open area and rigidity, supporting the packing bed while also directing flow and redistributing liquid | Support in desulfurization towers and packed columns |
| Collector / Redistributor | Customized to process | 304 / 316L | High collection efficiency, matched with distributor | Multi-bed packed columns |
Selling point: integrated supply of internals and packing reduces multi-vendor coordination; quoting internals together with packing raises order value by 20–30% and makes quality responsibility clearer.
Packed Tower Service
TOWER SERVICEMore than just packing: full life-cycle technical service for packed towers, from process validation to commissioning support.
Pilot / Bench-Scale Studies
Packing performance validation at bench and pilot scale to confirm selection with real data.
Process Package
Packed tower process design including internals selection, hydraulic checking and layout.
Process Simulation Support
Column performance evaluation with process simulation software to optimize operating parameters and energy savings.
Installation / Commissioning / Support
Installation schemes and on-site guidance, start-up and commissioning, plus ongoing technical support.
Selection Tips
Not sure which to choose? Send us your process conditions — our engineers will select free of charge.
Vacuum Distillation
Prefer CY wire gauze packing (8–10 theoretical plates/m): low pressure drop, high separation precision.
Atmospheric / Pressurized Absorption
Use 250Y / 350Y perforated plate packing for high capacity and anti-fouling; switch to random Pall Rings in fouling-prone columns.
Mist Eliminator Selection
Fine droplets: choose the DP high-efficiency type; heavy liquid loads: the HR high-capacity type; anti-clogging: the chevron vane type.
Free Matching Design
Provide column diameter, flow rate, temperature and media — we deliver a complete packing + internals selection and quotation.
Need tower internals selection or a quote?
Send process parameters or drawings — an engineer responds within 1 working day.