Classification and application of corrugated packing for orifice plates

1、 Characteristics of perforated corrugated packing
Orifice corrugated packing is a type of regular packing. It is composed of several parallel and vertically arranged perforated plates with grooves on their surfaces. The ripples form a certain angle with the tower axis direction, and adjacent plates have opposite ripple directions, forming intersecting triangular channels between the plates. Therefore, it has the following characteristics:
(1) The filler is composed of plates, which have large peaks arranged in a staggered manner. The plates are arranged neatly, resulting in large gaps, low gas resistance, and high flux.
(2) The surface wetting rate of the filler is high, there is no channeling phenomenon, the mass transfer efficiency is high, and the liquid holding capacity is low. Gas and liquid phases continuously move in a Z-shaped motion in the packing, mix evenly, have sufficient gas-liquid contact, high efficiency, and strong anti pollution ability.
(3) In addition to being made of metal and plastic, perforated corrugated packing can also be made of ceramic to meet special requirements such as corrosion resistance and high temperature resistance.
2、 Classification of corrugated packing for orifice plates
1. Corrugated packing for metal orifice plates
Metal orifice plate corrugated packing is an important new type of universal regular packing developed by Swiss company Sulzer in the late 1970s, following the development of metal wire mesh corrugated packing. It is called Mellapak packing. The purpose of the development is to overcome the limitations of corrugated metal wire mesh fillers and further expand their applications in distillation, absorption, and other fields. The filler maintains the geometric structure characteristics of the corrugated metal wire mesh filler and is made of perforated plates with grooves on the surface. Its performance is between that of the corrugated metal wire mesh filler and the loose packing.
(1) The geometric structure and characteristics of the packing are similar to those of metal wire mesh corrugated packing. Each unit of it is a cylindrical body composed of corrugated packing sheets with oblique teeth, with small holes punched on the sheets to roughly distribute the liquid on the sheets and enhance lateral mixing. The addition of grooves on the sheets plays a role in subdividing the liquid, increasing the liquid distribution and wetting function of the packing, and improving mass transfer efficiency. The corrugated packing of metal orifice plate is divided into many specifications according to its specific surface area. There are two types of inclination angles of 30 ° and 45 ° for the tower axis, represented by X and Y respectively.
(2) The metal orifice plate corrugated packing has the advantages of high flux, low resistance, high efficiency, low cost, and strong anti pollution ability. Specially suitable for atmospheric pressure and moderate vacuum distillation of hazardous substances such as ethanol, ethylbenzene/styrene, fatty alcohols, ethylenediamine, cyclohexene/cyclohexanol, ethylene glycol, aniline, chlorotoluene (para/ortho), fatty acids, mixed xylene, epoxyethane, epoxypropane, and other hydrocarbons. And it is suitable for atmospheric pressure countercurrent absorption processes, such as absorbing CO2, HS, HCI, CIO2, C1, etc. In the design of new and renovated towers, it is used to replace bulk packing materials such as Bauer rings and certain plate towers. Especially in the renovation of large towers, it has significant economic effects on improving product output and quality, and reducing energy consumption.