Multi-process cracker

Abstract

The utility model provides a multi-process cracker which comprises a shell, two sides of the shell are respectively connected with a feeding bin and a discharging bin, one sides of the feeding bin and the discharging bin close to the shell are respectively connected with a pore plate, the center of each pore plate is provided with a first cracking pipe, a second cracking pipe, a third cracking pipe, a fourth cracking pipe and a fifth cracking pipe, the fifth cracking pipe is provided with an opening in one side of the discharging bin; the second cracking pipe and the fourth cracking pipe are hermetically connected with the fifth cracking pipe through an E-shaped connecting pipe in the feeding bin; the first cracking pipe, the second cracking pipe, the third cracking pipe and the fourth cracking pipe are hermetically connected through connecting spiral pipes in the discharging bin; by the adoption of the structure, materials to be cracked can enter the first cracking pipe and the third cracking pipe to move towards the discharging bin, enter the second cracking pipe and the fourth cracking pipe from the tail ends of the first cracking pipe and the third cracking pipe to move towards the feeding bin, are collected to the fifth cracking pipe through the E-shaped connecting pipe in the feeding bin and finally move to the discharging bin, and the materials to be cracked are continuously heated and cracked in the moving process; and the length of the cracker can be reduced through turning back of the material, and the cracking efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection, in particular to a multi-process cracker. Background Art

[0002] Cracking refers to the chemical process of converting high-molecular compounds into low-molecular compounds through thermal energy. Cracking not only finds a good solution for the treatment of large amounts of organic waste (such as waste plastics, waste rubber, etc.) generated in modern society, but also provides a new solution to improve resource reduction and energy shortages. It can provide a large amount of basic industrial raw materials and energy sources, such as carbon black, fuel oil, etc., and is one of the means to solve various resource crises in the future.

[0003] The applicant of this application has previously applied for many patent technologies related to cracking. The applicant applied for an application number of 2019114025789 in 2019, which is entitled a technical solution of an industrial continuous coaxial multi-chamber cracker, in which the existing single inner cylinder is replaced by a plurality of cracking tubes located on the same circumference. When the inner cylinder rotates, the above-mentioned cracking tubes also rotate accordingly to perform cracking. However, during further application, the inventor found that the cracking tubes of the above-mentioned cracker are relatively long, resulting in higher structural strength requirements at both ends, and ultimately resulting in a larger volume of the entire cracker, a higher pressure for cracking heat supply, and easily causing uneven temperature distribution, reducing the cracking effect. Therefore, how to solve the above-mentioned problems has become a problem that the inventor needs to further solve. Utility Model Content

[0004] Based on the many deficiencies in the prior art, the utility model provides a multi-process cracker, which includes a shell, wherein a feed bin and a discharge bin are respectively connected on both sides of the shell, and a perforated plate is connected to the side of the feed bin and the discharge bin close to the shell, a fifth cracking tube is arranged at the center of the perforated plate, a first cracking tube and a third cracking tube are respectively arranged above and below the fifth cracking tube, and a second cracking tube and a fourth cracking tube are respectively arranged on the left and right sides of the fifth cracking tube, wherein the first cracking tube and the third cracking tube are opened on one side of the feed bin, and the fifth cracking tube is opened on one side of the discharge bin, and the second cracking tube and the fourth cracking tube are connected to the first cracking tube in the feed bin through an E-shaped connecting pipe. The five cracking tubes are sealed and connected; the first cracking tube and the second cracking tube, the third cracking tube and the fourth cracking tube are sealed and connected in the discharge bin through a connecting scroll; after adopting this structure, the material to be cracked can enter the first cracking tube and the third cracking tube and move toward the discharge bin to start cracking, and enter the second cracking tube and the fourth cracking tube at the end thereof and move toward the feed bin, and in the feed bin, it is collected to the fifth cracking tube through an E-shaped connecting tube, and finally moves to the discharge bin. During the above movement process, the material to be cracked is continuously thermally cracked, so that the length of the cracker can be reduced by the return of the material, and the thermal efficiency is higher, which can greatly improve the cracking efficiency.

[0005] In view of the shortcomings of the prior application, the inventor finally decided to reasonably set up multi-process cracking tubes in the cracker and connect them in the corresponding order to provide a longer material cracking time within a shorter distance, so that the material to be cracked and / or the solid heat carrier can move back and forth in the cracker and be evenly heated in the process, thereby greatly improving the cracking effect. Therefore, after many attempts, the inventor determined the following technical solution:

[0006] A multi-process cracker comprises a shell, wherein a feed bin and a discharge bin are connected to both sides of the shell, a perforated plate is connected to the feed bin and the discharge bin on one side close to the shell, a fifth cracking tube is arranged at the center of the perforated plate, a first cracking tube and a third cracking tube are arranged above and below the fifth cracking tube, a second cracking tube and a fourth cracking tube are arranged on the left and right sides of the fifth cracking tube, wherein the first cracking tube and the third cracking tube are opened at one side of the feed bin, the fifth cracking tube is opened at one side of the discharge bin, the second cracking tube and the fourth cracking tube are sealedly connected to the fifth cracking tube in the feed bin through an E-shaped connecting tube, and the first cracking tube and the second cracking tube, and the third cracking tube and the fourth cracking tube are sealedly connected to each other in the discharge bin through a connecting scroll.

[0007] Preferably, the first to fifth cracking tubes are each provided with a rotating belt, and the direction of the rotating belt in the first, third and fifth cracking tubes is opposite to that in the second and fourth cracking tubes; and the direction of the rotating belt in the second and fourth cracking tubes is directed from the discharge bin to the feed bin, which can facilitate the movement of the material to be cracked.

[0008] The parts of the shell connected to the feed bin and the discharge bin are all provided with dynamic seals, and the parts consisting of the feed bin, the discharge bin orifice plate and the cracking tube can rotate in the shell, and hot air or other heat-conducting medium can be introduced into the shell to heat the cracking tube; the above-mentioned rotation in the present application can be achieved by various existing technologies, especially the applicant's prior patent application has disclosed several rotatable forms, the inventor will not repeat them, and the inventor can also refer to the inventor's prior application, application number 2019114025789, and the name is an inner cylinder structure in an industrial continuous coaxial multi-chamber cracker;

[0009] Furthermore, the multi-process cracker provided in the present application can completely replace the relevant structure of the inner cylinder in the above-mentioned prior application, thereby realizing the upgrading of equipment.

[0010] The biggest difference from the prior application is that the cracking tubes are integrated, and the cracking tubes that can only transport in one direction in the prior art are adjusted to cracking tubes with different directions, thereby realizing multi-process cracking. The material to be cracked is obtained from the feed bin through the first cracking tube and the third cracking tube. When the material to be cracked moves to the tail end of the above-mentioned cracking tube, it can enter the corresponding second cracking tube and the fourth cracking tube under the action of the connecting scroll, and continue to move in the direction of the feed bin, and continue to be thermally decomposed. When it runs to the tail end of the second cracking tube and the fourth cracking tube, it is collected into the fifth cracking tube under the action of the E-shaped connecting tube, and finally moves to the discharge bin along the fifth cracking tube to realize discharge. In the above process, the material to be cracked actually runs a distance of three times the length of the cracking tube in the cracker, which greatly prolongs its residence time in the cracker and improves the cracking effect. Since the material is gradually converted into cracking products during the cracking process, the volume and weight are continuously reduced, so only a single fifth cracking tube is needed to meet the requirements of cracking product discharge. Due to the use of multiple processes, the cracking time of the material to be cracked is guaranteed, the length of the cracker can be reduced, thereby greatly reducing the footprint of the cracker. At the same time, the shell becomes smaller, and the amount of hot air or other heat-conducting media introduced into the shell is also reduced, which reduces the energy consumption of the equipment and improves the heat transfer efficiency. It is suitable for miniaturizing the entire set of cracking equipment to meet the needs of different processing volumes and improve the scope of application of the equipment.

[0011] The above-mentioned E-shaped connecting pipe and connecting scroll are made of the same material as the cracking tube, and the reason for using the connecting scroll is that at the tail ends of the first cracking tube and the third cracking tube, the material cracking is not completely and has a certain viscosity. Direct connection with a straight pipe may cause material accumulation, and the connecting scroll has a certain curvature to reduce the possibility of material accumulation. When each cracking tube rotates, the material can be better transferred from the connecting scroll to the second cracking tube and the fourth cracking tube, and the arc of the connecting scroll can better adapt to the tail end of the fifth cracking tube, thereby reducing the diameter of the entire equipment.

[0012] In summary, with the multi-process cracker of this structure, the material to be cracked can enter the first cracking tube and the third cracking tube and move toward the discharge bin to start cracking, and enter the second cracking tube and the fourth cracking tube at the end thereof and move toward the feed bin, and be collected to the fifth cracking tube through the E-shaped connecting pipe in the feed bin, and finally move to the discharge bin. During the above movement process, the material to be cracked is continuously thermally cracked, so that the length of the cracker can be reduced by the return of the material, and the thermal efficiency is higher, which can greatly improve the cracking efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a side view schematic diagram of the structure of a multi-process cracker;

[0014] Figure 2 for Figure 1The structural diagram of the middle A direction;

[0015] Figure 3 for Figure 1 Schematic diagram of the structure in the middle B direction;

[0016] Figure 4 It is a schematic diagram of the top view of the structure of a multi-process cracker (with the first cracking tube omitted);

[0017] In the figure, 1 is a shell, 2 is a first cracking tube, 3 is a feed bin, 4 is an E-shaped connecting pipe, 5 is a third cracking tube, 6 is a discharge bin, 7 is a connecting scroll, 8 is a second cracking tube, 9 is a fifth cracking tube, 10 is a perforated plate, and 11 is a fourth cracking tube. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings of the present utility model.

[0019] like Figure 1-4 As shown, a multi-process cracker includes a shell 1, and a feed bin 3 and a discharge bin 6 are connected to both sides of the shell 1 respectively. The feed bin 3 and the discharge bin 6 are connected to a perforated plate 10 on one side close to the shell, and a fifth cracking tube 9 is arranged at the center of the perforated plate 10. The fifth cracking tube 9 is respectively provided with a first cracking tube 2 and a third cracking tube 5 above and below, and a second cracking tube 8 and a fourth cracking tube 11 are respectively arranged on the left and right sides of the fifth cracking tube 9, wherein the first cracking tube 2 and the third cracking tube 5 are opened at one side of the feed bin 3, and the fifth cracking tube 9 is opened at one side of the discharge bin 6, and the second cracking tube 8 and the fourth cracking tube 11 are sealed and connected to the fifth cracking tube 9 in the feed bin 3 through an E-shaped connecting pipe 4; the first cracking tube 2 and the second cracking tube 8, and the third cracking tube 5 and the fourth cracking tube 11 are sealed and connected in the discharge bin 6 through a connecting scroll 7.

[0020] Preferably, the first to fifth cracking tubes are each provided with a rotating belt, and the direction of the rotating belt in the first, third and fifth cracking tubes is opposite to that in the second and fourth cracking tubes; and the direction of the rotating belt in the second and fourth cracking tubes is directed from the discharge bin to the feed bin, which can facilitate the movement of the material to be cracked.

[0021] The parts of the shell connected to the feed bin and the discharge bin are all provided with dynamic seals, and the parts consisting of the feed bin, the discharge bin orifice plate and the cracking tube can rotate in the shell, and hot air or other heat-conducting media can be introduced into the shell to heat the cracking tube; the above-mentioned rotation in the present application can be achieved through various existing technologies, especially the applicant's prior patent application has disclosed several rotatable forms, the inventor will not go into details, and the inventor can also refer to the inventor's prior application, application number 2019114025789, named an inner cylinder structure in an industrial continuous coaxial multi-chamber cracker.

[0022] In the specific embodiment, the cracking tubes that can only transport in one direction in the prior art are adjusted to cracking tubes with different directions, so as to realize multi-process cracking. The material to be cracked is obtained from the feed bin through the first cracking tube and the third cracking tube. When the material to be cracked moves to the tail end of the above-mentioned cracking tube, it can enter the corresponding second cracking tube and the fourth cracking tube under the action of the connecting scroll, and continue to move in the direction of the feed bin, and continue to be thermally decomposed. When it runs to the tail end of the second cracking tube and the fourth cracking tube, it is collected into the fifth cracking tube under the action of the E-shaped connecting tube, and finally moves to the discharge bin along the fifth cracking tube to realize discharge. In the above process, the material to be cracked actually runs a distance of three times the length of the cracking tube in the cracker, which greatly prolongs its residence time in the cracker and improves the cracking effect. Since the material is gradually converted into cracking products during the cracking process, the volume and weight are continuously reduced, so only a single fifth cracking tube is needed to meet the requirements of cracking product discharge. The length of the cracker can be reduced, thereby greatly reducing the floor space of the cracker. At the same time, the shell also becomes smaller, and the amount of hot air or other heat-conducting media introduced into the shell is also reduced, which reduces the energy consumption of the equipment and improves the heat transfer efficiency. It is suitable for miniaturizing the entire set of cracking equipment to meet the needs of different processing volumes and improves the scope of application of the equipment.

[0023] The E-shaped connecting pipe and the connecting scroll pipe are made of the same material as the cracking pipe.

[0024] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A multi-process cracker, comprising a shell (1), wherein two sides of the shell (1) are respectively connected to a feed bin (3) and a discharge bin (6), wherein: A feed bin (3) and a discharge bin (6) are both connected to a perforated plate (10) on one side close to the shell (1); a fifth cracking tube (9) is arranged at the center of the perforated plate (10); a first cracking tube (2) and a third cracking tube (5) are arranged above and below the fifth cracking tube (9); a second cracking tube (8) and a fourth cracking tube (11) are arranged on the left and right sides of the fifth cracking tube (9); the first cracking tube (2) and the third cracking tube (5) are opened on one side of the feed bin (3); the fifth cracking tube (9) is opened on one side of the discharge bin (6); the second cracking tube (8) and the fourth cracking tube (11) are sealedly connected to the fifth cracking tube (9) in the feed bin (3) through an E-shaped connecting tube (4); and the first cracking tube (2) and the second cracking tube (8), and the third cracking tube (5) and the fourth cracking tube (11) are sealedly connected in the discharge bin (6) through a connecting scroll (7).

2. The multi-process cracker according to claim 1, characterized in that: The first to fifth cracking tubes are all provided with a rotating belt, and the directions of the rotating belts in the first, third and fifth cracking tubes are opposite to those in the second and fourth cracking tubes.

3. The multi-process cracker according to claim 1 or 2, characterized in that: The direction of the rotating belt in the second cracking tube (8) and the fourth cracking tube (11) is directed from the discharge bin (6) to the feed bin (3).

4. The multi-process cracker according to claim 1 or 2, characterized in that: The parts of the shell (1) that are connected to the feed bin (3) and the discharge bin (6) are all provided with dynamic seals.

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