Trays: Diameter Range 0.5m to 15m, Hole Diameter 3mm to 25mm

Component Specifications

Definition

Trays are horizontal plates or structured packing elements installed within distillation columns to create multiple equilibrium stages. They provide surface area for vapor and liquid to interact, enabling mass and heat transfer based on relative volatility differences between components. Trays are engineered to maximize contact efficiency while minimizing pressure drop and liquid holdup.

Working Principle

Trays operate by allowing vapor to rise through openings (bubble caps, valves, or sieve holes) while liquid flows across the tray surface. This creates a froth or spray regime where vapor bubbles through the liquid, facilitating component separation through differential volatility. Liquid descends to lower trays via downcomers, creating counter-current flow that enhances separation efficiency across multiple theoretical stages.

Materials

Stainless steel (304/316L), carbon steel, nickel alloys, titanium, or specialized coatings for corrosion resistance. Material selection depends on process fluid properties, temperature, pressure, and chemical compatibility.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Spacing	300mm to 900mm
Tray Type	Sieve, Valve, Bubble Cap
Efficiency	70-95% Murphree efficiency
Weir Height	25mm to 100mm
Hole Diameter	3mm to 25mm
Pressure Drop	50-150 Pa per tray
Diameter Range	0.5m to 15m

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 28300, DIN 28180, ASME BPE

Parent Products

This component is used in the following industrial products

Distillation Column

A vertical vessel used to separate liquid mixtures into their individual components based on differences in volatility through the process of distillation.

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Engineering Analysis

Risks & Mitigation

Flooding
Weeping/Dumping
Fouling/Corrosion
Maldistribution
Mechanical Failure

FMEA Triads

Trigger: Excessive vapor velocity
Failure: Flooding - liquid carried upward
Mitigation: Design for appropriate vapor capacity, install demisters, implement flow control systems

Trigger: Corrosive process fluids
Failure: Material degradation and leakage
Mitigation: Select corrosion-resistant materials, apply protective coatings, implement inspection protocols

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±1mm for hole diameter, ±2mm for weir height, flatness within 3mm/m

Test Method

Hydrostatic testing, bubble testing for leakage, dimensional verification per engineering drawings

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Trays

Manufacturer profiles associated with Trays.

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Frequently Asked Questions

What are the main types of distillation trays?

The three primary types are sieve trays (perforated plates), valve trays (with movable caps), and bubble cap trays (with fixed caps). Each offers different efficiency, flexibility, and cost characteristics.

How do trays affect distillation column performance?

Trays determine separation efficiency, throughput capacity, pressure drop, and operational stability. Proper tray design optimizes vapor-liquid contact while minimizing energy consumption and flooding risks.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Trays