CN208213195U - Open cell carrier - Google Patents

Abstract

The utility model discloses an open-hole honeycomb carrier, which comprises a body (1), the body is a cylinder, the body is provided with several honeycomb holes (2) axially penetrating the upper and lower ends of the body, the honeycomb holes form a mesh body, the The mesh body is provided with openings (3) through the upper and lower ends of the body, the maximum diameter of the opening is 1/4 to 1/3 of the diameter of the body, and the cross-sectional area of the opening is not greater than 1/5 of the cross-sectional area of the body. The utility model can not only ensure the strength of the carrier, but also make the ratio of the specific surface area of the honeycomb hole to the cross-sectional area of the hole reasonably matched, so that the liquid can not only be fully adsorbed and filtered and purified, thereby reducing the liquid in the carrier honeycomb hole. The flow resistance increases the flow speed, the honeycomb holes are not easy to be blocked and caked, the service life of the carrier is improved, the pressure drop of the tower is reduced, the production efficiency is improved, and the production cost is reduced.

Description

open cell honeycomb carrier

technical field

The utility model relates to a catalyst carrier used in industrial towers such as petrochemical industry, in particular to an open-hole honeycomb carrier.

Background technique

The catalyst with honeycomb ceramics as the carrier mainly utilizes the characteristics of large specific surface area, small ventilation resistance and strong regularity of honeycomb ceramics. After being extruded through a die, it is connected into a network body containing thousands of small pores, impregnated or coated with highly active rare earth metals, transition metals, noble metals, etc. on the surface of honeycomb ceramics, and after reduction roasting, various practical properties are achieved. It is used in the treatment process of eliminating harmful gases in the production process and filtering liquid residues in the production process of products in petroleum and chemical industries. At present, the common problem of the main honeycomb carriers on the market is that after the honeycomb carrier has been used for a period of time, since the entire cross-section of the carrier is full of fine honeycomb holes, the honeycomb holes in the carrier (especially the middle honeycomb holes) are easy to Blockage and cake formation will cause slow flow of liquid in the middle of the honeycomb holes, gradually increase the flow resistance, and increase the pressure drop of the tower. Such phenomena will not only reduce production efficiency, but also increase power consumption, shorten the service life of the honeycomb carrier, and improve Cost of production.

Utility model content

Aiming at the above-mentioned problems existing in the catalyst carrier in the prior art, the utility model provides an open-celled honeycomb carrier with high compressive strength, fast flow rate, large specific surface area, and the cells are not easily blocked.

The technical solution adopted for the technical problem to be solved by the utility model is: an open-hole honeycomb carrier, which includes a body, the body is a cylinder, and the body is provided with a number of honeycomb holes axially penetrating the upper and lower ends of the body. The honeycomb holes form a mesh body, and the mesh body is provided with holes through the upper and lower ends of the body. The maximum diameter of the holes is 1/4 to 1/3 of the diameter of the body, and the cross-sectional area of the holes is No more than 1/5 of the cross-sectional area of the body. When the diameter of the body is less than 30 mm, the thickness of the honeycomb cell wall (6) is 0.2-0.3 mm. When the diameter of the body is more than 30 mm-70 mm, the thickness of the honeycomb cell wall 0.3-0.7 mm, when the diameter of the body is above 70 mm, the thickness of the honeycomb cell wall is 0.7-1.3 mm.

Further, the cross-section of the opening is triangular, circular, square, or regular hexagonal.

Compared with the prior art, the utility model has holes arranged in the axial direction on the honeycomb body, and reasonably limits the maximum diameter of the holes and the area of the holes, and reasonably designs the diameter of the body and the honeycomb. The relationship between the thickness of the pore wall can not only ensure the strength of the carrier, but also make the ratio of the specific surface area of the honeycomb pore to the cross-sectional area of the opening reasonably matched, so that the liquid can not only be fully adsorbed and filtered, but also reduce the liquid in the carrier. The flow resistance in the honeycomb holes improves the flow rate, the honeycomb holes are not easy to block and cake, and the pressure drop of the tower is reduced, thereby increasing the service life of the carrier and reducing production costs.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the present utility model,

FIG. 2 is a schematic top view of the structure of FIG. 1 .

In the figure, 1, body 2, honeycomb hole 3, opening 4, outer wall 5, inner wall 6, honeycomb hole wall.

Detailed ways

In order to make those skilled in the art better understand the technical solution of the utility model, the utility model will be further described in detail below in combination with specific embodiments according to the drawings.

As shown in Figures 1 and 2, the open-cell honeycomb carrier includes a body 1, and the body uses alumina and silicon dioxide as main raw materials and auxiliary materials through ball milling, stale mud refining, molding drying and high-temperature firing. The body is a cylinder, and the body is provided with several honeycomb holes 2 that axially penetrate the upper and lower ends of the body. The cross-section of the honeycomb holes is triangular, circular or square, and the number of honeycomb holes is generally 80-300 mesh, the honeycomb holes form a mesh body, and an opening 3 that runs through the upper and lower ends of the body is arranged in the middle of the mesh body. holes, but the sum of the areas of all openings should not be greater than 1/5 of the cross-sectional area of the body, the maximum diameter of the openings is 1/4 to 1/3 of the diameter of the body, and the maximum diameter and area of the restricted openings are In order not to affect the adsorption efficiency of the honeycomb holes in the carrier as much as possible, in order to ensure the strength of the body, when the diameter of the body is below 30 mm, the thickness of the honeycomb hole wall is 0.2-0.3 mm; when the diameter of the body is above 30 mm (including 30 mm) mm)-70 mm or less, the thickness of the honeycomb cell wall is 0.3-0.7 mm; when the diameter of the body is above 70 mm (including 70 mm), the thickness of the honeycomb cell wall is 0.7-1.3 mm, and the thickness of the honeycomb cell wall 6 is the same as that of the outer wall The ratio of the thickness of 4 to the thickness of inner wall 5 is 1:1.2-1.3:1.1-1.15.

Preferably, the cross-section of the opening is triangular, circular, square, regular hexagonal, etc.

In the past, after the existing honeycomb carrier has been used for a period of time, the honeycomb pores will be blocked and caked due to the adsorption of impurities. When the adsorption efficiency of the carrier is high, it can effectively reduce the flow resistance of the honeycomb holes and increase the flow rate, thus reducing the occurrence of honeycomb hole clogging and cake formation, further reducing the number of carrier replacements and saving production costs.

The above embodiments are only used to illustrate the technical solution of the utility model without limitation. Although the utility model has been described in detail with reference to specific embodiments, those skilled in the art should understand that the technical solution of the utility model can be modified or equivalent Replacement, without departing from the spirit and scope of the technical solutions of the present utility model, all of them shall be covered in the protection scope of the claims of the present utility model.

Claims (3)

1. Open-cell honeycomb carrier, characterized in that it includes a body (1), the body is a cylinder, the body is provided with a number of honeycomb holes (2) axially penetrating the upper and lower ends of the body, and the honeycomb holes form a network Shaped body, the mesh body is provided with openings (3) through the upper and lower ends of the body, the maximum diameter of the opening is 1/4 to 1/3 of the diameter of the body, and the cross-sectional area of the opening is not greater than 1/5 of the cross-sectional area of the body, when the diameter of the body is less than 30 mm, the thickness of the honeycomb wall (6) is 0.2-0.3 mm, and when the diameter of the body is more than 30 mm-70 mm, the thickness of the honeycomb wall is 0.3 -0.7 mm, when the diameter of the body is above 70 mm, the thickness of the honeycomb cell wall is 0.7-1.3 mm. 2. The open-cell honeycomb carrier according to claim 1, characterized in that: the cross-section of the open cells (3) is triangular, circular, square or regular hexagonal. 3. The open-cell honeycomb carrier according to claim 1, characterized in that the ratio of the thickness of the honeycomb cell wall (6) to the thickness of the outer wall (4) and the thickness of the inner wall (5) is 1:1.2-1.3:1.1-1.15.