CN213221053U - Bird nest grid packing - Google Patents

Abstract

The utility model discloses a bird nest grid filler, which is formed by stacking and splicing a plurality of filler blocks; each filling block is formed by a plurality of grid sheets and a plurality of perforated sheet sheets which are arranged and combined in parallel; each grid sheet and each perforated sheet are vertically or horizontally arranged; the adjacent sheet layers are fixedly connected; the mesh is arranged on the grid sheet; the pore plate sheet is provided with pore plates. The filler can cut and break up the dispersed phase into a plurality of liquid drops with small diameter and uniform distribution, increase the mass transfer area of two phases and reduce the axial back mixing of the two phases, thereby greatly improving the mass transfer efficiency. The filler has the advantages of large porosity, large flux, strong processing capacity, strong anti-blocking performance and the like.

Description

Bird nest grid packing

Technical Field

The utility model relates to an extraction tower technique specifically is a bird's nest net packs.

Background

Liquid-liquid extraction is a chemical unit operation for separating homogeneous liquid mixtures, and utilizes the difference in distribution of solute components in two liquid phases to achieve separation or purification of the mixture. Liquid-liquid extraction is not only widely applied in the fields of chemical industry, oil refining, metallurgy, medicine, food and the like, but also plays an important role in the fields of bioengineering, new materials, environmental engineering and the like.

The extraction equipment is of various types, and the filler extraction tower is one of the most widely used extraction equipment and has the advantages of simple structure, convenience in manufacturing and installation and the like. However, due to the problems of small density difference of two phases, large viscosity of continuous phase, serious axial back-mixing of two phases, complex interface phenomenon and the like in the liquid-liquid extraction process, a novel filler still needs to be further researched and developed to improve the processing capacity of the filler extraction tower and improve the mass transfer efficiency.

SUMMERY OF THE UTILITY MODEL

To the deficiency of the prior art, the utility model aims to solve the technical problem of providing a bird's nest net filler.

The technical scheme of the utility model for solving the technical problems is that a bird nest grid filler is provided, which is formed by stacking and splicing a plurality of filler blocks; the packing is characterized in that each packing block is formed by arranging and combining a plurality of grid sheets and a plurality of perforated sheet sheets in parallel; each grid sheet and each perforated sheet are vertically or horizontally arranged; adjacent sheets are fixedly connected; the mesh is arranged on the grid sheet; the pore plate sheet is provided with pore plates.

Compared with the prior art, the utility model discloses beneficial effect lies in:

(1) the liquid drops of the dispersed phase are cut and scattered after passing through the filler, the liquid drops become small, the quantity of the liquid drops becomes large, the contact mass transfer area of two phases is increased, and the mass transfer efficiency is improved.

(2) The sizes of the droplets of the dispersed phase are uniform, the droplets are distributed uniformly, large concentration holes do not exist, and the droplets cannot be aggregated into clusters, so that the effective mass transfer area is ensured, and the axial back mixing is reduced.

(3) The continuous phase has uniform flow and large flux.

(4) The porosity of the filler is high and can reach more than 98 percent, and the processing capacity is strong.

(5) High anti-blocking performance and low flow resistance.

(6) The filler has smooth surface, and can achieve the effects of strengthening clarification and separation and reducing phase entrainment.

(7) Convenient processing and low cost.

(8) The service cycle is long, and easy maintenance and used repeatedly.

Drawings

Fig. 1 is a schematic front view of the overall structure of an embodiment of the present invention;

fig. 2 is a schematic front view of a grid sheet according to an embodiment of the present invention;

fig. 3 is a schematic left view of a grid sheet according to an embodiment of the present invention;

fig. 4 is a schematic front view of an orifice plate according to an embodiment of the present invention;

fig. 5 is a schematic left view of an orifice plate according to an embodiment of the present invention;

in the figure: 1. a grid sheet; 11. mesh openings; 2. a perforated plate sheet; 21. plate holes.

Detailed Description

Specific embodiments of the present invention are given below. The specific embodiments are only used for further elaboration of the invention, and do not limit the scope of protection of the claims of the present application.

The utility model provides a bird nest grid filler (the filler for short, see the figures 1-5), which is formed by stacking and splicing a plurality of filler blocks; the packing is characterized in that each packing block is formed by arranging and combining a plurality of grid sheets 1 and a plurality of perforated sheet pieces 2 in parallel in a layer or row mode; each grid sheet 1 and each perforated sheet 2 are both vertically placed or both horizontally placed; the adjacent sheets are connected and fixed through spot welding (preferably, spot welding of wave crests and wave troughs) to form a filler block; the grid sheet 1 is provided with meshes 11; the orifice plate 2 is provided with an orifice 21.

Preferably, the grid sheet 1 is a zigzag structure or a corrugated (wave-shaped) structure formed by cutting a plane net and folding peaks and valleys.

Preferably, the orifice plate 2 is a zigzag structure or a corrugated (wave-shaped) structure formed by punching and cutting a metal sheet and folding peaks and valleys.

Preferably, the number of mesh sheets 1 is greater than the number of apertured sheets 2.

Preferably, the packing blocks are of symmetrical construction with the orifice plate 2 in the middle. For example, in a filler block, two grid sheets 1 are welded and fixed at each point on the left side and the right side of one pore plate sheet 2 to form a structure of grid sheet 1/pore plate sheet 2/grid sheet 1.

Preferably, the meshes 11 are rhombic, rectangular or square with the side length of 5-100 mm.

Preferably, the plate holes 21 are rhombic, triangular, square, rectangular or circular with a diameter of 5-100 mm.

Preferably, the open pore ratio of the perforated sheet 2 is 30% to 90%.

Preferably, the thickness of the perforated plate 2 is 0.1mm to 3 mm.

Preferably, the dip angles of the corrugations in the wave crests and the wave troughs of the grid sheet 1 and the pore plate sheet 2 are both 20-70 degrees, and the peak heights are both 1-100 mm.

Preferably, each grid sheet 1 and each perforated sheet 2 are vertically placed, and the strength is excellent.

Preferably, the grid sheet 1 and the orifice plate sheet 2 are made of stainless steel, plastic or ceramic and are directly formed.

Example 1

In this embodiment, the filler block structure is grid sheet 1/perforated sheet 2/grid sheet 1. According to experimental determination, the test result shows that the droplets of the dispersed phase are cut and scattered after passing through the filler, the diameter of the droplets is changed from 5-6 mm to 3-4 mm, the number of the droplets is increased, the droplets are uniformly distributed, and the mass transfer area of two phases is increased; and through experimental observation, the two-phase axial back mixing is reduced, so the mass transfer efficiency is obviously improved.

Example 2

In this embodiment, the filler block structure is grid sheet 1/perforated sheet 2/grid sheet 1/perforated sheet 1. According to experimental determination, the test result shows that the droplets of the dispersed phase are cut and scattered after passing through the filler, the diameter of the droplets is changed from 5-6 mm to 2-3 mm, the diameter of the droplets is smaller than that of the droplets in example 1, the number of the droplets is more than that of the droplets in example 1, the two-phase mass transfer area is larger than that of example 1, and the mass transfer efficiency is improved compared with that of example 1.

Example 3

In the embodiment, the filler is formed by stacking and splicing five filler blocks in the embodiment 2, and the adjacent upper and lower layers of filler blocks are stacked in a staggered way by 90 degrees. The experimental determination shows that the droplets of the dispersed phase are cut and broken up after passing through five fillers, the two phases are continuously contacted, the interface is fully updated and is uniformly distributed, the diameter of the droplets is changed from 5-6 mm to about 2mm, the diameter of the droplets is similar to that of the droplets in the embodiment 2, the number of the droplets is slightly more than that in the embodiment 2, and the experimental observation shows that the droplets are uniformly distributed and the axial back mixing of the two phases is reduced. The comparative analysis with example 2 shows that the longer the path traveled by the dispersed phase droplets, the longer the two-phase contact time and the higher the mass transfer efficiency. In addition, after the dispersed phase passes through a plurality of filler blocks which are overlapped up and down at 90 degrees, the droplets of the dispersed phase cannot be cut into infinite small droplets and then dissolved in the continuous phase, and the minimum diameter of the droplets of the dispersed phase in the embodiment 3 is about 2mm, so that the good dispersibility is ensured, and the emulsification phenomenon cannot be generated in the dispersed phase, so that the stability of the mass transfer efficiency of the two phases is ensured.

The utility model discloses a theory of operation and work flow are:

the droplets of the dispersed phase flow through the meshes 11 of the grid sheet 1 and the plate holes 21 of the orifice plate sheet 2 and are cut and scattered, the droplets become small, the number of the droplets becomes large, the droplets are uniformly distributed, and the contact mass transfer area with the continuous phase is increased, so that the mass transfer efficiency is improved. The continuous phase passes through the meshes 11 of the mesh sheet 1, the plate holes 21 of the orifice plate sheet 2 and the gaps between the adjacent sheets, and has uniform flow, large flux, low flow resistance and strong processing capacity. The two phases are contacted continuously, the interface is fully updated and uniformly distributed, the liquid drops are prevented from being aggregated into a cluster, and the axial back mixing of the two phases is reduced, so that the mass transfer efficiency is greatly improved. The filler has the advantages of large porosity, large flux, low flow resistance, large processing capacity, strong anti-blocking performance and the like.

The utility model discloses the nothing is mentioned the part and is applicable to prior art.

Claims (10)

1. A bird nest grid packing is formed by stacking and splicing a plurality of packing blocks; the packing is characterized in that each packing block is formed by arranging and combining a plurality of grid sheets and a plurality of perforated sheet sheets in parallel; each grid sheet and each perforated sheet are vertically or horizontally arranged; adjacent sheets are fixedly connected; the mesh is arranged on the grid sheet; the pore plate sheet is provided with pore plates.

2. The bird nest lattice packing of claim 1 wherein the lattice sheets are zigzag or corrugated structures formed by folding the planar lattice into peaks and valleys.

3. The bird nest lattice packing of claim 1 wherein the perforated sheet is a zigzag or corrugated structure formed by punching a metal sheet and folding the punched sheet into peaks and valleys.

4. The bird nest grid packing of claim 1, wherein the number of grid sheets is greater than the number of perforated sheet sheets.

5. Bird nest grid packing according to claim 1 or 4, characterized in that the packing blocks are of symmetrical construction with the perforated sheet in the middle position.

6. The bird nest grid packing of claim 1, characterized in that the mesh is diamond shaped, rectangular or square with sides 5-100 mm.

7. The bird nest mesh packing of claim 1, characterized in that the plate holes are diamond shaped, triangular shaped, square shaped, rectangular shaped, or circular shaped with a diameter of 5-100 mm.

8. The bird nest lattice filler of claim 1, characterized in that the open porosity of the perforated sheets is 30-90%.

9. The bird nest grid packing of claim 1, characterized in that the thickness of the perforated sheet is 0.1mm to 3 mm.

10. The bird nest grid packing of claim 1, characterized in that the inclination angles of the corrugations of the grid sheets and the perforated sheet sheets are both 20-70 degrees, and the peak heights are both 1-100 mm.

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