Regular metal packing is a type of high-efficiency mass transfer element formed from precisely processed metal sheets or wire mesh into regular geometric structures. It is widely used in chemical separation processes such as distillation, absorption, and extraction.

Metal Orifice Plate Bellows Packing

1. Structural Characteristics

Material: Stainless steel, titanium, aluminum, and other metal sheets (thickness typically 0.1-0.2mm)

Structural Features: The plate surface is stamped with uniform small holes (hole diameter approximately φ4-5mm), then pressed into a corrugated shape (corrugation angle typically 30°/45°)

Specific Surface Area: 125-750 m²/m³

Voidage: 85-98%

2. Core Characteristics

Mass Transfer Efficiency: Uniform gas-liquid distribution, theoretical plate number can reach 1-3 plates/meter

Throughput Capacity: High pressure drop (approximately 0.2-0.5 kPa/theoretical stage)

Operating Flexibility: Wide load range (gas phase kinetic energy factor F factor is typically 1-3 Pa^0.5)

Anti-clogging: Hole design reduces solid deposition

3. Typical Applications

Atmospheric to medium vacuum distillation (e.g., ethanol dehydration, organic solvent separation)

Absorption towers (e.g., natural gas dehydration, acid gas treatment)

Refining units (atmospheric and vacuum distillation towers, catalytic cracking fractionation tower modification)

Metal Perforated Plate Corrugated Filler

1. Structural Characteristics

Special Treatment:  Surface protrusions or spikes are added to the perforated plate

Reinforcement Mechanism: The spike structure disrupts the liquid film, increasing the surface renewal frequency

Specific Surface Area: 10-20% higher than ordinary perforated plates of the same specifications

2. Core Characteristics

Enhanced Mass Transfer: Increased liquid film surface turbulence, mass transfer coefficient increased by 15-30%

Wetting Performance: Suitable for low liquid load conditions (spray density can be as low as 0.2 m³/(m²•h))

Pressure Drop Characteristics: Approximately 10-15% higher than ordinary perforated plate packing

3. Typical Applications

High-precision separation with low reflux ratio

Preparation of high-purity products (e.g., electronic grade chemicals)

Vacuum distillation systems (where both efficiency and pressure drop need to be considered)

Metal Plate Corrugated Filler

1. Structural Characteristics

Substrate form: Metal sheet stretched or woven into a mesh and then corrugated

Mesh size: Typically 20-60 mesh (pore size 0.3-1mm)

Specific surface area: 100-500 m²/m³

Porosity: 90-97%

2. Core Characteristics

Capillary action: Mesh structure enhances liquid dispersion and retention capabilities

Low pressure drop: More open airflow channels, pressure drop reduced by 20-40% compared to perforated plates

Applicable media: Good adaptability to high-viscosity and easily foaming materials

3. Typical Applications

Absorption and desorption processes (e.g., MDEA desulfurization, CO₂ capture)

Extraction and distillation

Separation of heat-sensitive materials in the pharmaceutical and food industries

Metal Wire Mesh Corrugated Filler

1. Structural Characteristics

Material specifications: Stainless steel, copper, and other metal wire woven mesh (wire diameter 0.1-0.3mm)

Weaving density: 80-200 mesh, high mesh regularity

Specific surface area: 250-1000 m²/m³ (high-end models can reach 1500 m²/m³)

Porosity: 80-95%

2. Core Characteristics

Extremely high efficiency: Theoretical plates can reach 3-10 plates/meter, HETP can be as low as 100-300mm

Extremely low pressure drop: Pressure drop per theoretical stage can be as low as 0.01-0.1 kPa

Minimum liquid holdup: Typically 1-5% of the packing volume

Limitations: Extremely high requirements for material cleanliness, prone to clogging

3. Typical Applications

Deep vacuum distillation (absolute pressure <1) (kPa)

Isomer separation (e.g., xylene isomers)

Isotope separation, fragrance purification, and other precision separation processes

Laboratory-scale precision fractional distillation apparatus

Selection Decision Process Recommendations

Define separation objectives:

Product purity requirements (>99% purity prioritizes perforated plate or wire mesh packing)

Energy consumption limitations (low pressure drop requirements prioritize plate/wire mesh)

Analyze material characteristics:

Avoid wire mesh packing when solid content >0.01%

Prefer plate mesh or large-size perforated plates when viscosity >2 mPa•s

Determine operating window:

Prioritize wire mesh packing when vacuum <10 kPa

Prefer perforated plate packing when operating flexibility requirement >3:1

Summary

Metal structured packing, as a core component of modern high-efficiency separation technology, comprises four main product types—perforated plate corrugated, dimpled plate corrugated, plate mesh corrugated, and wire mesh corrugated packing—forming a complete performance spectrum that covers all scenarios from conventional bulk chemical separation to high-end fine chemical purification. We are a Chinese packing manufacturer. For more information, please contact us via email at annayu@169chem.net or WhatsApp +8618909016373.