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Metal structured packing, a vital tower internal in chemical and petrochemical industries, plays a crucial role in enhancing gas-liquid mass transfer efficiency. This article focuses on its classification, detailing key types and their characteristics.
Mesh structured packing, woven from metal wire, features a high specific surface area (500-1000 m²/m³), excellent wettability, and superior mass transfer performance, making it ideal for precise separation tasks such as high-purity distillation.
Plate corrugated packing consists of metal plates stamped into corrugations, with common specifications like 125Y, 250Y, and 350Y (Y indicating a 45°/45° wave angle). It balances efficiency and pressure drop, widely applied in general distillation and absorption processes.
Perforated plate corrugated packing incorporates evenly distributed holes on plates, improving gas distribution and reducing channeling, which is effective for handling high-viscosity fluids and fouling services.
Perforated and notched plate packing, with both perforations and notches on plates, enhances liquid redistribution and promotes uniform flow, suitable for large-diameter columns to ensure stable operation.
Metal ring structured packing combines ring and plate structures, offering high efficiency and low pressure drop, making it widely used in refinery and chemical processes where both separation effect and energy conservation are required.
The selection of metal structured packing depends on separation requirements, throughput, and pressure drop constraints, ensuring optimal tower performance in various industrial applications.
