Anti-wall-hanging cracking furnace

Abstract

The utility model relates to the technical field of cracking furnaces, and discloses an anti-wall-hanging cracking furnace which comprises a reaction furnace, a reaction cylinder is sleeved in the reaction furnace, a top cover is fixedly connected to the top end of the reaction cylinder, a feeding pipe is arranged on the side wall of the top cover, a base is fixedly connected to the bottom end of the reaction furnace, and a discharging pipe is arranged on the side wall of the bottom of the reaction furnace. The reaction cylinder is of a cylinder structure with the top end closed and the bottom end open, the bottom end of the reaction cylinder is located on the lower portion of the reaction furnace, and an annular connecting plate is fixedly arranged on the circumferential outer wall of the upper portion of the reaction cylinder. Compared with the prior art, the device has the advantages that the gas pipes are arranged around the circumferential outer wall of the reaction cylinder, the interior of the reaction cylinder can be rapidly heated through heat entering the space between the reaction furnace and the reaction cylinder from the heat conveying port, the reaction efficiency is improved, and residual materials on the filtering bottom box and the inner wall of the reaction furnace can be scraped off through the arc-shaped scraping ring arranged on the rotating shaft; the arc-shaped guide plate can disturb gas after cracking reaction to form gas flow, and then the gas flow is output out of the reaction furnace through the discharge pipe, so that the material output efficiency after cracking reaction is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cracking furnaces, in particular to an anti-wall-hanging cracking furnace. Background Art

[0002] Anti-wall cracking furnace is a kind of equipment used for processing chemical raw materials, which is usually used in petrochemical industry. Anti-wall cracking furnace is one of the common equipment in petrochemical industry. These industries need to convert crude oil and other chemical raw materials into more valuable products, such as fuel, lubricant and chemicals. Anti-wall cracking furnace is usually used to crack the long-chain hydrocarbon molecules in petroleum raw materials, breaking them into shorter molecules, thereby producing more gasoline, diesel and other petroleum products. This process is called cracking and is one of the key steps in the oil refining process. In traditional cracking furnaces, due to high temperature, high pressure and chemical reaction, carbon deposits and scaling will appear on the inner wall of the cracking furnace, which is called "walling". Walling reduces the efficiency of the furnace, increases maintenance costs, and may cause equipment damage and production stagnation. Using anti-wall cracking furnace can improve the production line capacity and product quality. By reducing the formation of wall, the cracking furnace can operate longer, reduce downtime, increase production, and produce purer products.

[0003] When the existing cracking furnace cracks the raw materials, the heating efficiency in the reaction tube is low, and the materials are accumulated on the inner wall of the reaction furnace. The accumulated materials cannot be scraped off while the materials are output, resulting in a waste of resources. In addition, since there is no accelerating output mechanism for the materials after the cracking reaction, the material output efficiency is low. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] The technical problem to be solved by the utility model is that the heating efficiency in the reaction tube is low, and the materials are accumulated on the inner wall of the reaction furnace. The accumulated materials cannot be scraped off while the materials are output, resulting in a waste of resources; in addition, since there is no accelerating output mechanism for the materials after the cracking reaction, the material output efficiency is low.

[0006] (II) Technical solution

[0007] In order to solve the above technical problems, the technical solution provided by the present invention is as follows:

[0008] An anti-wall cracking furnace comprises a reaction furnace, a reaction tube is sleeved in the reaction furnace, a top cover is fixedly connected to the top of the reaction tube, a feed pipe is arranged on the side wall of the top cover, a base is fixedly connected to the bottom end of the reaction furnace, a discharge pipe is arranged on the bottom side wall, and the reaction furnace also comprises an air inlet pipe, a heat delivery port, an annular connecting plate, an air pipe, a support column, a motor, a filter bottom box, a rotating seat, an arc scraper ring, an arc guide plate, and a fixed ring;

[0009] The reaction tube is a cylindrical structure with a closed top and an open bottom. The bottom of the reaction tube is located at the bottom of the reaction furnace. An annular connecting plate is fixedly provided on the circumferential outer wall of the upper part of the reaction tube. The annular connecting plate is fixed on the top surface of the reaction furnace. An air intake sealing tube is fixedly connected between the annular connecting plate and the top of the reaction tube. An air intake pipe is connected to the side wall of the air intake sealing tube. A heat transfer port is provided at the top of the reaction furnace. A plurality of air pipes are evenly distributed around the circumferential outer wall of the reaction tube on the annular connecting plate. The tops of the air pipes are all connected to the air intake sealing tube through the annular connecting plate. The bottoms are all arranged to meander downward around the circumferential outer wall of the reaction tube. The bottoms of the air pipes are located in the reaction tube after passing through the lower side wall of the reaction tube.

[0010] The bottom of the reactor is fixed with a plurality of support columns evenly distributed in an annular shape, the bottom ends of the support columns are all fixed to the top surface of the base, a motor fixed to the middle of the bottom of the reactor is arranged between the bottom of the reactor and the base, and the output shaft of the motor passes through the bottom of the reactor and is fixedly connected to a rotating shaft;

[0011] A filter bottom box is fixed to the circumferential outer wall of the bottom end of the reactor, the upper end of the filter bottom box is an open structure, the middle part is sleeved on the rotating shaft and is slidably connected to the rotating shaft, and an arc-shaped scraper ring sleeved and fixed on the rotating shaft is provided on the lower side of the filter bottom box, the outer end of the arc-shaped scraper ring is tightly attached to the inner wall of the reaction cylinder and is slidably connected to it, and the top end is tightly attached to the bottom end of the filter bottom box and is slidably connected to it.

[0012] As an improvement, the inner bottom surface of the reactor is provided with a swivel seat which is sleeved and fixed on a rotating shaft. The bottom surface of the swivel seat is slidably connected to the inner bottom surface of the reactor. A fixing ring is fixed to the circumferential outer wall of the swivel seat. The circumferential outer wall of the fixing ring is provided with a number of evenly distributed arc guide plates. The outer end of the arc guide plate has a certain gap with the inner wall of the reactor and is flush with the discharge pipe.

[0013] As an improvement, the arc-shaped scraper ring and the arc-shaped guide plate have opposite bending directions.

[0014] As an improvement, the bottom end of the reaction cylinder is an inverted conical discharge cylinder, and the bottom end of the discharge cylinder is located in the filter bottom box.

[0015] As an improvement, a material guide cone is fixedly connected to the top end of the rotating shaft, and the bottom surface of the material guide cone is slidably connected to the inner bottom surface of the filter bottom box.

[0016] (III) Beneficial effects

[0017] The advantages of the utility model compared with the prior art are:

[0018] 1. The air pipe arranged around the outer wall of the reaction tube can quickly heat the inside of the reaction tube by entering the heat between the reaction furnace and the reaction tube from the heat delivery port, thereby improving the reaction efficiency. The arc-shaped scraper ring arranged on the rotating shaft can scrape off the residual materials on the filter bottom box and the inner wall of the reaction furnace.

[0019] 2. The arc-shaped guide plate can form gas disturbance after the cracking reaction into airflow, and then output it to the outside of the reactor through the discharge pipe, thereby improving the output efficiency of the material after the cracking reaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is the appearance of the utility model Figure 1 .

[0021] Figure 2 This is the appearance of the utility model Figure 2 .

[0022] Figure 3 This is a partial structural section diagram of the utility model. Figure 1 .

[0023] Figure 4 This is a partial structural section diagram of the utility model. Figure 2 .

[0024] Figure 5 This is a partial structural section diagram of the utility model. Figure 3 .

[0025] Figure 6 This is a partial structural section diagram of the utility model. Figure 4 .

[0026] Figure 7 This utility model Figure 3 A partial enlarged schematic diagram of the structure.

[0027] Figure 8 This utility model Figure 4 A partial enlarged schematic diagram of the structure.

[0028] As shown in the figure: 1. Reactor; 2. Reactor tube; 3. Top cover; 4. Feed pipe; 5. Base; 6. Material guide cone; 7. Discharge pipe; 8. Air inlet pipe; 9. Heat delivery port; 10. Annular connecting plate; 11. Air pipe; 12. Support column; 13. Motor; 14. Filter bottom box; 15. Rotating seat; 16. Arc scraper ring; 17. Arc guide plate; 18. Fixed ring; 19. Air inlet sealing tube; 20. Rotating shaft; 21. Discharge tube. DETAILED DESCRIPTION

[0029] In the description of the present utility model, it should be understood that the terms "center", "lateral", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device 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 on the present utility model. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more. In addition, the term "including" and any variation thereof are intended to cover non-exclusive inclusions.

[0030] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0031] Embodiment 1

[0032] Please see attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 , Attachment Figure 5 and attached Figure 7 As shown, an anti-wall cracking furnace comprises a reaction furnace 1, a reaction tube 2 is sleeved in the reaction furnace 1, a top cover 3 is fixedly connected to the top of the reaction tube 2, a feed pipe 4 is arranged on the side wall of the top cover 3, a base 5 is fixedly connected to the bottom end of the reaction furnace 1, a discharge pipe 7 is arranged on the bottom side wall, the reaction tube 2 is a cylinder structure with a closed top and an open bottom, the bottom end of the reaction tube 2 is located at the bottom of the reaction furnace 1, an annular connecting plate 10 is fixedly arranged on the circumferential outer wall of the upper part of the reaction tube 2, the annular connecting plate 10 is fixed to the top surface of the reaction furnace 1, and the annular connecting plate 10 is fixed to the top surface of the reaction furnace 1, and the annular connecting plate 10 is fixed to the top surface of the reaction furnace 1. An air intake sealing cylinder 19 is fixedly connected between the annular connecting plate 10 and the top of the reaction cylinder 2, and an air intake pipe 8 is connected to the side wall of the air intake sealing cylinder 19. A heat transfer port 9 is provided on the upper part of the reaction furnace 1. A plurality of air pipes 11 evenly distributed around the circumferential outer wall of the reaction cylinder 2 are provided on the annular connecting plate 10. The top ends of the air pipes 11 all pass through the annular connecting plate 10 and are connected to the air intake sealing cylinder 19, and the bottom ends are all arranged around the circumferential outer wall of the reaction cylinder 2 in a winding manner downward. The bottom ends of the air pipes 11 pass through the lower side wall of the reaction cylinder 2 and are located in the reaction cylinder 2.

[0033] A plurality of annular evenly distributed support columns 12 are fixed at the bottom of the reaction furnace 1, and the bottom ends of the support columns 12 are fixed to the top surface of the base 5. A motor 13 fixed to the middle of the bottom of the reaction furnace 1 is provided between the bottom of the reaction furnace 1 and the base 5. The output shaft of the motor 13 passes through the bottom of the reaction furnace 1 and is fixedly connected to a rotating shaft 20. A filter bottom box 14 is fixed to the circumferential outer wall of the bottom of the reaction furnace 1. The upper end of the filter bottom box 14 is an open structure, and the middle part is sleeved on the rotating shaft 20 and slides with the rotating shaft 20. The bottom end of the reaction cylinder 2 is an inverted conical discharge cylinder 21, and the bottom end of the discharge cylinder 21 is located in the filter bottom box 14. The lower side of the filter bottom box 14 is provided with an arc-shaped scraper ring 16 which is sleeved and fixed on the rotating shaft 20. The outer end of the arc-shaped scraper ring 16 is tightly attached to the inner wall of the reaction cylinder 2 and is slidably connected thereto, and the top end is tightly attached to the bottom end of the filter bottom box 14 and is slidably connected thereto. A material guide cone 6 is fixedly connected to the top of the rotating shaft 20, and the bottom surface of the material guide cone 6 is slidably connected to the inner bottom surface of the filter bottom box 14.

[0034] Through the above structure, the air pipe 11 arranged around the outer wall of the reaction tube 2 can quickly heat the inside of the reaction tube 2 by entering the heat between the reaction furnace 1 and the reaction tube 2 from the heat transfer port 9, thereby improving the reaction efficiency. The arc-shaped scraper ring 16 arranged on the rotating shaft 20 can scrape off the residual materials on the filter bottom box 14 and the inner wall of the reaction furnace 1.

[0035] Embodiment 2

[0036] Based on Example 1, please refer to the attached Figure 4 , Attachment Figure 6 and attached Figure 8 As shown, the inner bottom surface of the reactor 1 is provided with a rotating seat 15 which is sleeved and fixed on the rotating shaft 20. The bottom surface of the rotating seat 15 is slidably connected to the inner bottom surface of the reactor 1. A fixing ring 18 is fixed to the circumferential outer wall of the rotating seat 15. The circumferential outer wall of the fixing ring 18 is provided with a plurality of evenly distributed arc guide plates 17. The outer end of the arc guide plate 17 has a certain gap with the inner wall of the reactor 1 and is flush with the discharge pipe 7. The arc scraper ring 16 and the arc guide plate 17 have opposite bending directions.

[0037] Through the above structure, the arc-shaped guide plate 17 can form a gas flow by stirring the gas after the cracking reaction, and then output it to the outside of the reaction furnace 1 through the discharge pipe 7, thereby improving the output efficiency of the material after the cracking reaction.

[0038] In the specific implementation of the utility model, when the raw material needs to be cracked, the raw material enters the reaction tube 2 through the feed pipe 4, and then heat energy is transported between the reaction tube 2 and the reaction furnace 1 through the heat transport port 9. The air pipe 11 arranged around the outer wall of the reaction tube 2 can quickly heat the inside of the reaction tube 2 by entering the heat between the reaction furnace 1 and the reaction tube 2 from the heat transport port 9, thereby improving the reaction efficiency. After the reaction is completed, the air flow is transported into the reaction tube 2 through the air inlet pipe 8, and the cracked and differentiated gas in the reaction tube 2 is transported downward, and then the gas is discharged from the discharge tube 2. 1 enters the filter bottom box 14, and then drives the motor 13 to work. The output shaft of the motor 13 drives the rotating shaft 21 to rotate, so that the guide cone 6 rotates, and the cracked gas enters the bottom of the reaction furnace 1 through the filter bottom box 14. The rotating shaft 21 simultaneously drives the arc scraper ring 16 and the arc guide plate 17 to rotate, and the residual material on the bottom surface of the filter box 14 and the inner wall of the reaction furnace 1 is scraped off. The arc guide plate 17 can disturb the gas after the cracking reaction to form an airflow, and then output it to the outside of the reaction furnace 1 through the discharge pipe 7, thereby improving the output efficiency of the material after the cracking reaction.

[0039] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. An anti-wall cracking furnace, comprising a reaction furnace (1), wherein a reaction tube (2) is sleeved in the reaction furnace (1), a top cover (3) is fixedly connected to the top of the reaction tube (2), a feed pipe (4) is arranged on the side wall of the top cover (3), a base (5) is fixedly connected to the bottom end of the reaction furnace (1), and a discharge pipe (7) is arranged on the bottom side wall, characterized in that: It also includes an air inlet pipe (8), a heat delivery port (9), an annular connecting plate (10), an air pipe (11), a support column (12), a motor (13), a filter bottom box (14), a rotating seat (15), an arc-shaped scraper ring (16), an arc-shaped guide plate (17), and a fixing ring (18); The reaction tube (2) is a cylindrical structure with a closed top and an open bottom. The bottom of the reaction tube (2) is located at the bottom of the reaction furnace (1). An annular connecting plate (10) is fixedly provided on the circumferential outer wall of the upper part of the reaction tube (2). The annular connecting plate (10) is fixed on the top surface of the reaction furnace (1), and an air intake sealing tube (19) is fixedly connected between the annular connecting plate (10) and the top of the reaction tube (2). The side wall of the air intake sealing tube (19) is connected with an air intake pipe (8). The upper part of the reaction furnace (1) is provided with a heat transfer port (9). The annular connecting plate (10) is provided with a plurality of air pipes (11) evenly distributed around the circumferential outer wall of the reaction tube (2). The tops of the air pipes (11) all pass through the annular connecting plate (10) to be connected with the air intake sealing tube (19), and the bottoms are all arranged around the circumferential outer wall of the reaction tube (2) in a winding manner downward. The bottoms of the air pipes (11) pass through the lower side wall of the reaction tube (2) and are located in the reaction tube (2). The bottom end of the reaction furnace (1) is fixedly provided with a plurality of support columns (12) evenly distributed in an annular shape, the bottom ends of the support columns (12) are all fixed to the top surface of the base (5), a motor (13) is fixed to the middle part of the bottom surface of the reaction furnace (1) between the bottom surface of the reaction furnace (1) and the base (5), and the output shaft of the motor (13) passes through the bottom end of the reaction furnace (1) and is fixedly connected to a rotating shaft (20); A filter bottom box (14) is fixed to the circumferential outer wall of the bottom end of the reaction furnace (1); the upper end of the filter bottom box (14) is an open structure; the middle part is sleeved on the rotating shaft (20) and is slidably connected to the rotating shaft (20); the lower side of the filter bottom box (14) is provided with an arc-shaped scraper ring (16) sleeved and fixed on the rotating shaft (20); the outer end of the arc-shaped scraper ring (16) is tightly attached to the inner wall of the reaction cylinder (2) and is slidably connected thereto; the top end is tightly attached to the bottom end of the filter bottom box (14) and is slidably connected thereto.

2. The anti-wall cracking furnace according to claim 1, characterized in that: The inner bottom surface of the reaction furnace (1) is provided with a rotating seat (15) which is sleeved and fixed on a rotating shaft (20); the bottom surface of the rotating seat (15) is slidably connected to the inner bottom surface of the reaction furnace (1); a fixing ring (18) is fixed to the circumferential outer wall of the rotating seat (15); a plurality of evenly distributed arc guide plates (17) are provided on the circumferential outer wall of the fixing ring (18); a certain gap is left between the outer ends of the arc guide plates (17) and the inner wall of the reaction furnace (1) and the arc guide plates (17) are flush with the discharge pipe (7).

3. The anti-wall cracking furnace according to claim 2, characterized in that: The arc-shaped scraper ring (16) and the arc-shaped guide plate (17) have opposite bending directions.

4. The anti-wall cracking furnace according to claim 1, characterized in that: The bottom end of the reaction cylinder (2) is an inverted conical discharge cylinder (21), and the bottom end of the discharge cylinder (21) is located in the filter bottom box (14).

5. The anti-wall cracking furnace according to claim 1, characterized in that: The top end of the rotating shaft (20) is fixedly connected with a material guide cone (6), and the bottom surface of the material guide cone (6) is slidably connected with the inner bottom surface of the filter bottom box (14).

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