CN201519580U

CN201519580U - Corrugated structured packing

Info

Publication number: CN201519580U
Application number: CN2009202216772U
Authority: CN
Inventors: 刘春江; 朱明�; 高峰; 李超; 袁希钢
Original assignee: Tianjin University
Current assignee: Tianjin University
Priority date: 2009-10-29
Filing date: 2009-10-29
Publication date: 2010-07-07
Anticipated expiration: 2019-10-29

Abstract

The utility model relates to a corrugated structured packing. Staggered rectangular holes are formed at crests and troughs and on packing sheets; an included angle between the crests and the troughs ranges from 60 to 120 degrees; the length of the rectangular holes ranges from 40 to 60mm, and the width thereof ranges from 2 to 10mm; the transverse pitch is equal to the length of the rectangular holes, and the longitudinal pitch is equal to one-fifth time to one time of the length of the rectangular holes; and the length of each section of corrugated sheet is controlled to be 2 times the length of the rectangular holes, so that the rectangular holes are alternately filled with the whole packing sheets in the horizontal direction, and liquid films can pass through the rectangular holes during the downward flow. The utility model provides the corrugated structured packing. The corrugated structured packing provided by the utility model has higher porosity, so that gas easily passes through the packing, the pressure drop can be reduced and the fluid flux is obtained; the experimental and theoretical calculated results show that the improvement can remarkably increase the specific surface area of the packing and improve the mass transfer efficiency; and the packing has obvious flow guide function, and can remarkably reduce the resistance of a fluid passage and increase the fluid flux.

Description

A kind of corrugated regular filler

Technical field

The utility model relates to the filler, particularly corrugated regular filler in a kind of petrochemical equipment packed tower.

Background technology

Structured packing is a common mass transfer separation equipment in chemistry and the petroleum industry, and the extensive use of structured packing makes it occupy crucial status in national economy.When the common plate corrugated regular filler is used for the operation of gas-liquid mass transfers such as rectifying or absorption, gas-liquid two-phase is generally counter current contacting mass transfer or heat transfer in the filler, liquid phase is membranaceous along filling surface and flows downward, liquid film is when mobile, most of liquid all flows along the trough of corrugated filler tablet, and promptly filling surface trough place liquid film is thicker and crest and other surperficial liquid film cover relatively poor; And when filler was relatively poor to the wettability of liquid, the part filling surface may no liquid cover, and reduces gas-liquid mass transfer area, and mass transfer effect is relatively poor.Traditional corrugated regular filler sheet both sides liquid does not circulate, and only in a side and gas phase contact mass transfer, mass transfer area is less for liquid phase, because the barrier effect of packing sheet makes pressure drop bigger, fluid flux is less.This laboratory (Chemical Engineering associating National Key Laboratory, University Of Tianjin's locellus) discovers (1), the flat board that employing has square opening is higher more than 30% than the gas-liquid mass transfer efficient of ordinary flat, and according to this phenomenon, we have proposed the higher novel structured packing of a kind of gas-liquid mass transfer efficient.

Summary of the invention

The purpose of this utility model is the structure of traditional corrugated regular filler is improved, and increases the disturbance of convection cell, reduces fluid resistance and pressure drop, and then increases interphase mass transfer efficient.

To achieve these goals, the technical solution of the utility model is as follows:

This filler is made of a plurality of corrugated plates, and crest and trough are arranged on each corrugated plate.Crest and trough place and corrugated plate are provided with staggered rectangle hole, the extended line angle on crest and two limits of trough is 60～120 °, the length of rectangle hole is 40～60mm, wide is 2～10mm, horizontal spacing equals the length of rectangle hole, and longitudinal pitch is 1/5 times～1 times of rectangle hole length.The length of every section corrugated plate is controlled at 2 times of rectangle hole lengths, makes the rectangle hole alternately be full of whole packing sheet in the horizontal direction, and liquid film will inevitably pass through the rectangle hole in the process that flows downward.

This utility model corrugated regular filler, offer the rectangle hole by plate face and crest line place at the mellapak packing sheet, packing sheet both sides fluid exchange is flowed, the liquid that is in packing sheet one side laminar sublayer is originally changed to the opposite side surface, thereby improve mass-transfer efficiency; The design of rectangle makes liquid phase fluid be subjected to the direction power different with size at tapping in the process that flows downward, and liquid film more easily takes place to extend and be broken, is the effective way that increases mass transfer.Because this novel structured packing sheet porosity is higher, and gas is more easily passed through, thereby can reduces pressure drop and obtain bigger fluid flux.Experiment and theoretical result of calculation show that above-mentioned improvement can significantly increase the specific area of filler, improve mass-transfer efficiency.This filler has tangible guide functions, can significantly reduce the resistance of fluid passage, increases fluid flux.

Description of drawings

The front view and the side view of the novel structured packing sheet of Fig. 1;

The vertical view of the novel structured packing sheet of Fig. 2;

The three-dimensional structure diagram of the novel structured packing sheet of Fig. 3;

The installation diagram of the novel structured packing sheet of Fig. 4.

The specific embodiment

Below with reference to the accompanying drawings the technical characterictic of the utility model corrugated regular filler is described in more detail:

The utility model crest and trough place and packing sheet are provided with staggered rectangle hole, the extended line angle on crest and two limits of trough is 60～120 °, the length of rectangle hole is 40～60mm, wide is 2～10mm, horizontal spacing equals the length of rectangle hole, longitudinal pitch is 1/5 times～1 times of rectangle hole length, and the length of every section corrugated plate is controlled at 2 times of rectangle hole lengths.

As shown in Figure 1, the utility model is cut with the rectangle hole with crest, the trough place of packing sheet are staggered on the structured packing sheet, and long h is 40～60mm, and wide h2 is 2～10mm, and horizontal spacing equals h, and longitudinal pitch h3 is 1/5 times～1 times h2.The length of every section corrugated plate is controlled at 2 times of rectangle hole lengths, makes the rectangle hole alternately be full of whole packing sheet in the horizontal direction, and liquid film will inevitably pass through the rectangle hole in the process that flows downward.The long limit of rectangle hole is vertical with the bodies of fluid flow direction, makes liquid film be subjected to the effect of the anisotropic power in hole place, produces to stretch with broken, thereby mass transfer is produced facilitation.At staggered hole and the corrosion resistant plate of running into of liquid flow direction liquid film, constantly produce and converge and separate, promoted the Surface Renewal of liquid film, the bottom that liquid is contacted with packing sheet also can be displaced to the surface and contact with gas phase, further promotes mass transfer.

Shown in Fig. 2,3, the utility model all offers the rectangle hole at crest and trough place, and liquid can penetrate into opposite side from a side, has avoided traditional corrugated plate packing in gathering of trough place liquid and scattering at crest place liquid.The extended line angle a on crest of the present utility model, two limits of trough is 60～120 ° (Fig. 2).Liquid can access uniform distribution on the new packing sheet.

Fig. 4 is new packing sheet assembling effect figure.Packing sheet runner and horizontal direction angle b are 15～75 °.Adjacent two packing sheets are assembled relatively, and the runner direction is opposite, can impel fluid in the inner evenly distribution of whole tower tray.The utlity model has and be easy to install and machining characteristics.

Adopt novel structured packing of the present utility model, carry out drop test on University Of Tianjin's freezing mask experimental provision, the result shows that the novel structured packing of multifolded plate window diversion type is with respect to common corrugated plate regular packing, and pressure drop has reduced by 10% on year-on-year basis.The more common corrugated plate packing of the utility model structured packing mass-transfer efficiency has on average improved 30%.

Claims

1. corrugated regular filler, it is characterized in that crest and trough place and packing sheet are provided with staggered rectangle hole, the extended line angle on crest and two limits of trough is 60～120 °, the length of rectangle hole is 40～60mm, wide is 2～10mm, horizontal spacing equals the length of rectangle hole, and longitudinal pitch is 1/5 times～1 times of rectangle hole length; The length of every section corrugated plate is controlled at 2 times of rectangle hole lengths, makes the rectangle hole alternately be full of whole packing sheet in the horizontal direction.