Catalyst mixing equipment

Abstract

The utility model discloses catalyst mixing equipment which comprises a plurality of mixing assemblies which are sequentially communicated, each mixing assembly comprises a pipe body, connecting flanges are arranged at the two ends of each pipe body, and the adjacent mixing assemblies are communicated in a sealed mode through the connecting flanges; two mixing plates are arranged in the pipe body, the mixing plates are spirally arranged, the two mixing plates are arranged in a staggered manner, the interior of the pipe body is divided into four flow channels by the two mixing plates, and the sectional areas of the four flow channels are the same; the side part of the mixing plate is fixedly connected with the inner wall of the pipe body, and the two ends of the mixing plate are also provided with mounting pieces; according to the utility model, two catalysts are pre-mixed in the pipeline, so that after entering the reactor, the two catalysts are in full contact with materials, and more catalysts can participate in the reaction earlier.

Description

Technical Field

[0001] The utility model relates to the field of catalyst transportation, in particular to catalyst mixing equipment. Background Art

[0002] Due to the progress of polyolefin process technology, including the successful development of high-efficiency catalysts, the process has been simplified and the quality of products has been improved. In recent years, combined with the development of polyolefin product applications, the advantages of bimodal polyethylene and bimodal polypropylene resins with relatively wide molecular weight distribution in improving product performance and material processability have attracted more and more attention. In the reaction of polypropylene, multiple catalysts are required.

[0003] For example, the patent with authorization announcement number CN217093400U discloses a polyolefin catalyst feeding system, including a catalyst barrel, a catalyst dispersion tank, a catalyst feed pump, and a prepolymerization reactor. The catalyst barrel is connected to the catalyst dispersion tank, and the catalyst dispersion tank is connected to the catalyst feed pump. The discharge pipeline of the catalyst feed pump is combined with the connected propylene feed pipeline and then injected into the prepolymerization reactor. The TEAL and DONOR mixed feed pipeline is combined with the connected propylene feed pipeline and then separately injected into the prepolymerization reactor. The injected catalyst contacts and reacts with TEAL and DONOR in the prepolymerization reactor.

[0004] The above patent solves the problems of easy clogging and catalyst sedimentation of the catalyst feeding system, greatly simplifies the catalyst configuration process, and improves the stability of the production system; when the above patent is used, the catalysts of the two catalyst dispersion tanks are directly merged into a feed pipeline and then input into the polymerization reactor, and then thoroughly mixed after entering the reactor. Even the catalyst in a slurry state cannot be mixed evenly in the feed pipeline. However, the more evenly the catalyst is mixed, the more stable the reaction is when entering the tank. However, when the catalyst is introduced into the reactor in the above manner, the mixing effect is not good in the initial stage.

[0005] Therefore, it is necessary for us to improve such a structure to overcome the above-mentioned defects. Utility Model Content

[0006] The utility model aims to provide a catalyst mixing device capable of mixing two or more catalysts in a pipeline, so as to solve the problems raised in the above-mentioned background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A catalyst mixing device comprises a plurality of mixing components which are connected in sequence, wherein the mixing components comprise a pipe body, both ends of the pipe body are provided with connecting flanges, and adjacent mixing components are connected and sealed by the connecting flanges; two mixing plates are provided in the pipe body, wherein the mixing plates are arranged in a spiral manner and the two mixing plates are arranged in a staggered manner, and the two mixing plates divide the pipe body into four flow channels, and the cross-sectional areas of the four flow channels are the same; at the same time, the side of the mixing plate is fixedly connected to the inner wall of the pipe body, and at the same time, mounting parts are also provided at both ends of the mixing plate, wherein the mounting parts comprise two concentric mounting rings and two mounting arms, and the two mounting arms are arranged perpendicular to each other, wherein the ends of the mounting arms are fixedly mounted on the inner wall of the pipe body, and the mounting rings are fixedly mounted on the mounting arms;

[0009] Furthermore, the mixing plate is made of stainless steel.

[0010] Furthermore, the twisting angle of the single mixing plate is at least 90°.

[0011] Furthermore, the mixing plates in two adjacent mixing assemblies rotate in opposite directions.

[0012] Furthermore, a baffle is provided at one end of the tube body, and a plurality of through holes are evenly opened on the baffle, and the baffle is used to enhance the mixing effect of the mixing assembly.

[0013] Furthermore, an extension section is also provided at one end of the tube body where the baffle is provided.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The two catalysts converge into the feed pipeline and then enter the tank. The utility model is installed in the feed pipeline. At the same time, when the two catalysts flow through the feed pipeline, they become turbulent and then flow through the through holes on the baffle, so that the two catalysts are mixed more evenly.

[0016] The utility model allows two catalysts to be pre-mixed in the pipeline, so that after entering the reactor, they can be in contact with the material more fully, and more catalysts can participate in the reaction earlier. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the structure of the catalyst mixing equipment.

[0018] Figure 2 Schematic diagram of the structure of the mixing component in the catalyst mixing equipment.

[0019] Figure 3 for Figure 2 Cross-sectional view of .

[0020] Figure 4Schematic diagram of the structure of several mixing components in the catalyst mixing device in some embodiments.

[0021] Figure 5 for Figure 4 Cross-sectional view of .

[0022] Figure 6 Schematic diagram of the structure of several mixing components in the catalyst mixing device in other embodiments. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. The components of the embodiment of the utility model generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents the selected embodiment of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0024] See also Figure 1-3 , a catalyst mixing device, installed on a feed pipeline 9, comprises a plurality of mixing components 1 which are connected in sequence, wherein the mixing components 1 comprise a pipe body 2, both ends of the pipe body 2 are provided with connecting flanges 3, and adjacent mixing components 1 are connected in sealing manner through the connecting flanges 3;

[0025] Two mixing plates 4 are arranged in the pipe body 2, wherein the mixing plates 4 are arranged in a spiral manner and the two mixing plates 4 are arranged in a staggered manner, and the two mixing plates 4 divide the pipe body 2 into four flow channels, and the cross-sectional areas of the four flow channels are the same; at the same time, the side of the mixing plate 4 is fixedly connected to the inner wall of the pipe body 2, and at the same time, mounting members 5 are also arranged at both ends of the mixing plate 4, wherein the mounting members 5 include two concentric mounting rings 501 and two mounting arms 502, and the two mounting arms 502 are arranged perpendicular to each other, wherein the ends of the mounting arms 502 are fixedly mounted on the inner wall of the pipe body 2, and the mounting rings 501 are fixedly mounted on the mounting arms 502;

[0026] At the same time, when the utility model is used, the two catalysts converge to the feed pipeline 9 and then enter the tank. The utility model is installed in the feed pipeline 9. At the same time, when the two catalysts flow through the feed pipeline 9, they become turbulent when flowing, so that the two catalysts are mixed more evenly;

[0027] like Figure 4-5At the same time, in some embodiments of the present scheme, the mixing plates 4 inside two adjacent mixing assemblies 1 rotate in opposite directions, so that the catalyst mixture after passing through one mixing assembly 1 rotates in the opposite direction, so that the mixing is more uniform;

[0028] like Figure 6 In some other embodiments of the present invention, a baffle 6 is further provided at one end of the tube body 2, and a plurality of through holes are evenly formed on the baffle 6, and the baffle 6 is used to enhance the mixing effect of the mixing assembly 1;

[0029] As some other embodiments of the present solution, an extension section 601 is further provided at one end of the tube body 2 where the baffle 6 is provided.

[0030] In the description of the present utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "left", "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the equipment or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present utility model, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "connection" and the like should be understood in a broad sense, for example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

Claims

1. Catalyst mixing equipment, characterized in that: It comprises a plurality of mixing components which are connected in sequence, wherein the mixing components comprise a pipe body, both ends of the pipe body are provided with connecting flanges, and adjacent mixing components are connected and sealed by the connecting flanges; two mixing plates are provided in the pipe body, wherein the mixing plates are spirally arranged and the two mixing plates are staggered, and the two mixing plates divide the pipe body into four flow channels, and the cross-sectional areas of the four flow channels are the same; at the same time, the side of the mixing plate is fixedly connected to the inner wall of the pipe body, and at the same time, mounting parts are also provided at both ends of the mixing plate, wherein the mounting parts comprise two concentric mounting rings and two mounting arms, and the two mounting arms are perpendicularly arranged, wherein the ends of the mounting arms are fixedly installed on the inner wall of the pipe body, and the mounting rings are fixedly installed on the mounting arms.

2. The catalyst mixing device according to claim 1, characterized in that: The mixing plate is made of stainless steel.

3. The catalyst mixing device according to claim 1, characterized in that: The twist angle of the single mixing plate is at least 90°.

4. The catalyst mixing device according to claim 1, characterized in that: The mixing plates in two adjacent mixing assemblies rotate in opposite directions.

5. The catalyst mixing device according to claim 1, characterized in that: A baffle is also provided at one end of the tube body, and a plurality of through holes are evenly opened on the baffle, and the baffle is used to enhance the mixing effect of the mixing assembly.

6. The catalyst mixing device according to claim 1, characterized in that: An extension section is also provided at one end of the tube body where the baffle is provided.

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