Structural characteristics and flow properties of stainless steel corrugated packing

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Wavy packing is generally made of metal sheets about 0.2 mm thick. The plates have small holes punched in them, with an opening rate of about 10%. The function of the small pores is, on one hand, to increase the lateral mixing of gases, and on the other hand, to allow the liquid to diverge at these pores, thereby promoting a more uniform distribution of the liquid. Among them, the pore size of the small pores results in different variations in the fluid properties of corrugated materials at different inclination angles. The plates also have fine grooves created by rolling, which improve the wettability of liquids on the surface of the filler. This allows liquids to form many very thin film layers on the plates, thereby facilitating mass transfer. The plate also features corrugated sheets at a certain inclination; the angle between these corrugations and the axis of the tower is usually either 45° or 30°. These corrugated plates are assembled into a cylindrical packing disc, with the corrugation directions of adjacent plates being opposite to each other, thereby creating numerous intersecting and symmetrically arranged inclined channels within the packing. The adjacent packing trays fit closely together and are installed at 90° angles to each other inside the tower. Metal corrugated packing is composed of corrugated sheets, each of which has a certain inclination, forming local inclined surfaces. The liquid distribution performance of the packing tower directly affects the mass transfer efficiency of the tower, and this aspect has received considerable attention over the years. The corrugated plate structured packing is composed of vertically arranged corrugated plates, the corrugated edges of which form an angle with the tower axis. In the filler, the tilt directions of the corrugated edges of two adjacent plates are opposite to each other, forming a series of intersecting inclined channels. These inclined channels come into contact at the corrugated edges, creating individual channel contact points. The channels between two adjacent plates and the contact points of these channels are abstracted as a planar node network composed of wires and wire intersections (referred to as nodes). A packing element (also known as a packing unit) is simplified as a three-dimensional node network formed by these parallel planar node networks. Within the same plate, lateral mass transfer occurs due to the lateral gradient of the fluid flow velocity, while mixing takes place at the overlapping contact points between adjacent plates. This enables the flow rate and concentration of the liquid to be evenly graded, thereby improving the separation efficiency of the filler. Original source: http://www.bowentianliao.com/zhishi/jishu/308.html