What Kind of Packing Does Structured Packing Belong to

structured packing belongs to a distinct category of packing, specifically a type of "structured" packing, as opposed to "random" packing. Unlike random packing, which consists of irregularly shaped, randomly arranged elements, structured packing is defined by its regular, ordered geometric design. It is a critical tower internal, widely used in gas-liquid separation processes such as distillation, absorption, and extraction columns. Structured packing typically features repeated, uniform units—like corrugated metal sheets, mesh networks, or plastic modules—arranged in parallel or helical patterns, creating precisely defined flow channels. This ordered structure gives it key advantages: a high specific surface area (ranging from 100 to 1000 m²/m³), low pressure drop, and superior mass transfer efficiency. These properties make structured packing ideal for applications requiring high separation precision, such as in petrochemical refining, pharmaceutical production, and environmental engineering. Its classification within packing types hinges on structural geometry, with common subtypes including plate structured packing (e.g.,孔板波纹) and网孔 structured packing (e.g.,丝网波纹). Overall, as a specialized tower internal, structured packing is a cornerstone of modern separation technology, valued for its efficiency and reliability in industrial scale-ups.