structured packing is critical for efficient mass transfer in chemical separation processes. To improve its mass transfer coefficient, several strategies can be implemented. First, optimize geometric parameters: adjust wave height (typically 0.5-5 mm), wave spacing (2-10 mm), and wire gauze layers (10-50) to reduce gas-liquid resistance and increase specific surface area (100-500 m²/m³). Second, enhance surface characteristics: modify packing surface with roughness (via acid etching) or hydrophilic coatings (e.g., SiO₂) to promote uniform liquid wetting, reducing dead zones. Third, optimize operating conditions: control gas velocity (1-5 m/s) to avoid flooding or channeling, and adjust temperature/pressure to match material properties, improving diffusion rates. Additionally, coordinate with tower internals: use precise liquid distributors and redistributors to ensure uniform phase distribution, minimizing maldistribution. Finally, select appropriate materials (e.g., stainless steel, PP) with high thermal conductivity and corrosion resistance to maintain stable performance. By integrating these methods, the mass transfer coefficient can be significantly enhanced, boosting separation efficiency and reducing energy consumption in industrial applications.
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