Sieve Trays
Perforated contact plates with no moving components. Provides the lowest pressure drop, high separation capacity, and excellent fouling tolerance for steady vapor-liquid processes.
Ambani Metals manufactures a complete portfolio of high-efficiency distillation column trays engineered for critical vapor-liquid separation across global hydrocarbon refining, petrochemical plants, specialty chemicals, pharmaceutical synthesis, and industrial desalination facilities.
Manufactured using CNC-controlled precision punching, laser cutting, and hydraulic forming, each column tray assembly is fabricated to strict engineering tolerances and tailored to hydraulic loading specifications. Whether handling high-volume crude fractionation, debottlenecking vacuum towers, or addressing severe polymerizing or fouling streams, our custom column trays deliver predictable hydraulic capacity, wide operating turndown, and extended operational cycles.
Custom-fabricated in segmented panels designed for rapid passage and assembly through vessel manways (typically 18" to 24" ID nozzles).
Perforated contact plates with no moving components. Provides the lowest pressure drop, high separation capacity, and excellent fouling tolerance for steady vapor-liquid processes.
Cylindrical or slotted caps secured over risers. Maintains positive liquid seals with zero weeping even at near-zero vapor rates, ideal for high turndown and reactive distillation columns.
Directional or round valves pressed directly out of the tray deck. Delivers superior anti-fouling performance with non-sticking vapor orifices for corrosive or dirty duties.
Dynamic disk or caged valves that self-adjust according to changing vapor velocities. Provides broad hydraulic flexibility and high efficiency across variable production loads.
Separation efficiency depends directly on peripheral tray mechanics and sealing accuracy. Ambani Metals manufactures a complete package of installation-ready tray hardware, ensuring reliable fit-up and field replacement without hot work.
Straight, sloped, or envelope downcomers with recessed inlet sumps designed to prevent hydraulic choking and vapor entrainment.
Specialized stainless steel tray clamps, carriage bolts, washers, and expansion bolting for quick manway assembly.
Standard flat weirs, picket-fence weirs for low flow dispersion, and swept-back weirs to prevent liquid backup at heavy reflux rates.
Center-downcomer directional baffles preventing cross-stream liquid splashing in multi-pass high-velocity columns.
Every column tray is fabricated to exact customer process data sheets, hydraulic ratings, and mechanical design codes.
| Tray Type | Relative Capacity | Turndown Ratio | Relative Pressure Drop | Fouling Resistance | Relative Capital Cost |
|---|---|---|---|---|---|
| Sieve Tray | High | Moderate (~2:1) | Lowest | Moderate | Lowest (Most Economical) |
| Fixed Valve Tray | High | Good (~3:1) | Low - Moderate | High (Non-sticking) | Low - Medium |
| Floating Valve Tray | High | Excellent (~4:1 to 5:1) | Moderate | Moderate | Medium |
| Bubble Cap Tray | Moderate | Highest (>8:1) | Highest | Low | Highest |
Ambani Metals serves Tier-1 EPC contractors, refinery maintenance divisions, and plant operators worldwide with export-compliant documentation and crating.
Saudi Arabia (Aramco compliant standards), UAE, Qatar, Oman, Kuwait, and Bahrain for refinery crude towers, gas sweetening, and offshore fractionation revamps.
United States, Canada, Germany, Netherlands, United Kingdom, and Italy for petrochemical debottlenecking, biofuel purification, and specialty chemical recovery systems.
Singapore, Australia, Malaysia, Indonesia, South Africa, Nigeria, and Egypt with complete international shipping documentation, third-party inspection (TUV, DNV, SGS), and priority delivery.
Connect directly with our process engineering and fabrication specialists. We analyze your process data sheets, calculate hydraulic loading, and supply high-precision tray solutions for your turnaround or greenfield projects.
Inquire NowTechnical guidance regarding tray selection, design parameters, and procurement standards.
A distillation column tray is a horizontal internal contact plate engineered to facilitate counter-current mass transfer between upwardly rising vapor and downwardly descending reflux liquid. Components separate across successive stages based on differences in vapor pressure and relative volatility. The tray deck contains contact mechanisms (perforations, valve units, or bubble caps) that disperse vapor thoroughly into the liquid layer to maximize interfacial surface area.
Sieve trays are the simplest and lowest-cost design, utilizing bare perforations; they perform exceptionally well under steady operational loads but weep at reduced vapor throughput. Valve trays utilize dynamic or stationary orifices that throttle vapor flow, increasing turndown to 4:1 or 5:1 with high efficiency. Bubble cap trays incorporate capped chimneys that maintain a permanent liquid pool on the deck, providing total weep-free operation and the widest operational flexibility, albeit at higher capital cost and pressure drop.
Fixed valve trays and conventional sieve trays with larger hole configurations are the preferred choice for fouling, slurry-bearing, or polymerizing services. Fixed valves have no moving or floating caps that can bind, seize, or accumulate solid crusts, maintaining steady operation throughout extended run periods.
Yes. Although structured packing and valve trays have replaced them in many standard separations, bubble cap trays remain mandatory for applications requiring positive liquid sealing, minimal weeping at near-zero rates, high liquid holdup times (such as reactive or absorption columns), and processes with substantial fluctuations in feed rate.
Yes. We regularly supply replacement trays and revamp internals engineered to fit existing tower wall rings and downcomer bolting bars. All tray decks are fabricated in segmental panels designed to pass through existing vessel manholes (typically 18" to 24" ID) and reassemble rapidly without on-site hot work.
Talk to our engineering team: +91-9930498858 · [email protected]