Metal Corrugated Plate Structured Packing is a highly efficient, regularly arranged gas-liquid mass transfer element. Due to its unique corrugated plate structure and excellent mass transfer performance, it is widely used in distillation, absorption, desorption, etc. in the fields of petrochemicals, fine chemicals, and environmental protection.

1. Structure and characteristics of metal corrugated plate structured packing

The core structure of metal corrugated plate structured packing is the corrugated sheets formed by rolling and stamping of metal sheets. The corrugated sheets are arranged crosswise at a certain angle (usually 30°-60°) to form regular grid channels. Its characteristics are mainly reflected in: 

High specific surface area: The corrugated structure significantly increases the gas-liquid contact area (specific surface area is usually 100-1000m²/m³), providing sufficient interface for mass transfer.

Low pressure drop: Regular channels reduce fluid turbulence, and the gas-liquid flow resistance is small (the pressure drop is only 1/3-1/5 of that of random packing), which is suitable for vacuum or high-pressure operation.

Efficient mass transfer: The corrugated sheets cross to form a "zigzag" channel, forcing the gas-liquid countercurrent contact, enhancing turbulence and molecular diffusion, and the theoretical plate equivalent height (HETP) is low (usually 0.1-0.5m).

Strong anti-blocking ability: The channel is regular and has a large opening (void ratio > 95%), which is not easy to accumulate solid particles or coke, and is suitable for treating materials containing impurities.

High mechanical strength: Metal materials (such as stainless steel, titanium, nickel alloy) are resistant to high temperature, high pressure, and corrosion, and are suitable for harsh working conditions (temperature -200℃ to 800℃, pressure vacuum to 35MPa).

2. Preparation process of metal corrugated plate

The preparation of metal corrugated plate structured packing uses metal thin plates as raw materials (thickness 0.1-0.5mm) and is formed through multiple steps:

Raw material pretreatment: Clean the oil stains on the surface of the metal plate, dry it and cut it to the specified size.

Corrugation forming: The metal plate is pressed into a corrugated shape (corrugation height 2-10mm, pitch 5-20mm) through a special calender. The corrugation angle and shape (such as sine wave, trapezoidal wave) need to be precisely controlled to ensure the packing performance.

Punching and cutting: Punch small holes (diameter 0.5-2mm, porosity 10%-30%) on the corrugated sheet to enhance the uniformity of gas-liquid distribution; cut the corrugated sheet according to the designed size.

Assembly and fixing: stack the corrugated sheets at cross angles (such as 30°, 45°, 60°) and fix them by welding or snapping to form structured packing blocks (usually 0.3-1.5m³ in size).