CN102423680A - Catalyst random packing - Google Patents

Abstract

The invention relates to a catalyst random packing. The catalyst random packing comprises a packing shell and a catalyst packet placed inside the packing shell. The packing shell is provided with a cylinder. One end of the cylinder is provided with a block end cover. The cylinder wall of the cylinder is provided with at least a circle of inner oblique tongue pieces, wherein the inner oblique tongue pieces are uniformly arranged along the circumference of the cylinder wall. The inner oblique tongue pieces extend to the cylinder, and the tongue tips are toward the direction of the block end cover. According to the present invention, one end of the catalyst packet is blocked by the block end cover, and the other end of the catalyst packet is hooked by the barbs formed by the inner oblique tongue pieces, such that the catalyst packet is suspended and fixed in the packing shell, and can not prolapse due to the gas surging and the liquid surging, the problems of suspension and fixation of the catalyst and the packing shell are solved; due to the random characteristic of the packing of the present invention, the gas short circuit phenomenon of the whole bundle of the catalyst filler packet can be overcome, the specific surface area of the gas-liquid contact can be increased, the effect of the catalytic reaction can be improved, and the reactive rectification process is achieved well.

Description

A catalyst random packing

technical field

The invention relates to a chemical catalyst packing, in particular to a catalyst random packing, which is mainly used in the catalytic rectification process of the chemical industry.

Background technique

In the prior art, most of the catalysts used in the chemical catalytic rectification process are arranged in the rectification tower in the form of structured packing. The bag is loaded between two layers of wire mesh and then rolled into a roll to form a cylinder. When used for catalytic rectification, the filler is vertically stacked on the filler support grid to form a catalyst bed. The disadvantage of this kind of structured packing is: there is a large space between the packing rolls, and the experiment found that the gas passes through this space to form a gas short circuit, and there is no good gas-liquid contact, so it cannot transfer mass well. . For this reason, some people also want to use random packing to overcome this shortcoming of structured packing, but because the catalyst and packing shell are difficult to suspend and fix, resulting in complicated production and high cost, they have not been realized.

Contents of the invention

The purpose of the present invention is to solve the problems in the prior art by providing a catalyst random packing, which better solves the problem of suspension and fixation of the catalyst and the packing body, so that the random packing of the catalyst can replace the structured packing and eliminate the structured packing. The short circuit of the gas in the catalyst increases the contact opportunity and time of gas, liquid and liquid with the catalyst, and improves the gas-liquid mass transfer efficiency and catalytic reaction conversion rate.

In order to achieve the above object, the technical scheme of the present invention is as follows:

It has a stuffing shell and a catalyst package placed in the stuffing shell, the stuffing shell has a cylinder body, a grille end cap is arranged at one end of the cylinder body, and on the cylinder wall of the cylinder body There is at least one circle of inner oblique tongue pieces uniformly arranged along the circumference of the cylinder wall, the inner oblique tongue pieces protrude into the cylinder, and the tip of the tongue faces the direction of the end cover of the grille.

The further technical scheme of the present invention is as follows:

The inner oblique tongues are provided with two or more circles along the axial direction of the cylinder wall, and the inner oblique tongues between the circles are mutually misaligned.

The grill end cover is composed of at least two or more radially inwardly curved arc rings arranged uniformly along the circumference of the cylinder wall and projecting radially inward from the cylinder wall.

The grill end cover is composed of a plurality of radial tongues evenly arranged along the circumference of the cylinder wall and extending from the cylinder wall to the center.

Features of the present invention are as follows:

1. In the present invention, the catalyst package is preferably filled in the packing shell, and one end is blocked by the end cover of the grille, and at the same time, it is hung by the barb formed by the inner oblique tongue, so that the catalyst package is suspended and fixed in the packing shell, and will not be damaged due to The gas and liquid surge and come out, which better solves the problem of suspension and fixation of the catalyst and the packing shell. Not only can the reaction be carried out well, but also the mass transfer function of random packing can be realized.

2. Since this packing is a catalyst random packing, when it is scattered in the catalytic rectification column section of the rectification tower, it can not only overcome the gas short circuit phenomenon of the structured packing, but also increase the contact between gas, liquid and liquid and the catalyst Opportunity and time, but also can carry out rectification at the same time of catalytic reaction, achieve the purpose of separation while reacting, and finally effectively improve the efficiency of gas-liquid mass transfer and the conversion rate of catalytic reaction.

3. One end of the packing shell of this packing is sealed with a grille end cover, and the other end is a barbed hanging bag formed by an inner oblique tongue, so that the filling of the catalyst package does not need a cover, the filling operation is simple, and the production cost of the packing is reduced.

Description of drawings

Fig. 1 is a front view of one of the packing shell structures of the present invention.

Fig. 2 is a top view of Fig. 1 .

Fig. 3 is a three-dimensional structure diagram of Fig. 1 .

Fig. 4 is a schematic diagram of the structure of the catalyst sheath.

Fig. 5 is a front view of the second packing shell structure of the present invention.

FIG. 6 is a top view of FIG. 5 .

FIG. 7 is a three-dimensional structure diagram of FIG. 5 .

Detailed ways

Example 1

Referring to Fig. 1～3, it has a stuffing shell and a catalyst bag (not drawing catalyst bag among the figure) that is placed in this stuffing shell, described stuffing shell has a cylinder body 1, is set at one end of this cylinder body There is a grill end cover, and at least a circle of inner oblique tongue pieces 2 arranged uniformly along the circumference of the cylinder wall is provided on the cylinder wall of the cylinder body, and the inner oblique tongue pieces 2 protrude into the cylinder, and The tip of the tongue is facing the direction of the grille end cap, thereby forming a hanging bag barb; the shaft of the inner oblique tongue has an included angle with the cylinder wall, and the included angle can be adjusted between greater than 0° and less than 90°, so that The inner oblique tongue piece has better elasticity. In order to make the packing better in gas-liquid contact, the inner oblique tongue piece 2 is provided with two or more turns along the axial direction of the cylinder wall. The oblique tongue pieces are misaligned. The cylinder body 1 can be formed by curling a piece of metal plate, the inner oblique tongue piece 2 on the cylinder wall can be formed by cutting and die stamping on the metal plate, and the curled butt joint edge 4 is axially dislocated butted to realize the butt joint The dislocation arrangement of the oblique tongue pieces 2 in the position; the grill end cover can be a separate end cover, and then fixedly connected with the cylinder 1; it can also be formed directly on the cylinder One-piece end cap; this example adopts one-piece end cap, which is composed of at least two or more radial curved arc rings 3 that are evenly arranged along the circumference of the cylinder wall and radially protrude from the cylinder wall. Such one-piece end caps can be directly cut and formed by die stamping on the plate of the curled cylinder, so it has the advantage of simple manufacture.

Referring to Fig. 4, the catalyst package is made into a shape that matches the volume of cylinder body 1. A mesh cover as shown in Fig. 5 can be made earlier, and after the catalyst is loaded, the two ends are tied or sewn together to form a The cylindrical catalyst package is then loaded into the packing shell 1 to finally form a catalyst random packing.

Example 2

In this example, on the basis of the structure of Example 1, the grid end cover adopts another structural form of one-piece end cover. Formed towards the tongue 5. This lattice end cover is also suitable for direct cutting and die stamping on the plate of the curled cylinder, and also has the advantage of simple manufacture. The other structures of this example are the same as in Embodiment 1.

Claims (4)

1. A catalyst random packing is characterized in that: it has a packing shell and a catalyst bag placed in the packing shell, the packing shell has a cylinder (1), and an end of the cylinder is provided There is a grille end cover, and at least one circle of inner oblique tongues (2) arranged uniformly along the circumference of the cylinder wall is provided on the cylinder wall of the cylinder, and the inner oblique tongues (2) are directed toward the cylinder. Stretch out with the tip of your tongue facing the direction of the grill end cap. 2. Catalyst random packing according to claim 1, characterized in that: said inner slant tongue (2) is provided with two or more turns along the axial direction of the cylinder wall, and the inner slant between the turns The tongue pieces (2) are mutually misaligned and arranged. 3. Catalyst random packing according to claim 1, characterized in that: the grill end cover is composed of at least two or more uniformly arranged along the circumference of the cylinder wall and protruding radially from the cylinder wall. The radial inner curved arc ring (3) is formed. 4. Catalyst random packing according to claim 1, characterized in that: the grille end cover is composed of a plurality of radial tongues (5 )constitute.

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