Tubular catalytic reactor

Abstract

The utility model discloses a tubular catalytic reactor which comprises a reactor body, a uniform material distribution device is mounted at the upper end of the reactor body through a bolt, and a tubular reaction structure is mounted in the reactor body. According to the utility model, the uniform material distribution device is mounted, and each blanking hollow shell forms a circular shape, so that falling liquid can uniformly enter the tube nest, a catalyst in the tube nest is uniformly consumed, and the reaction stability is improved; the tube nest reaction structure is installed, buffer assemblies are arranged in all the tube nests, when the liquid enters the tube nests and reacts with a catalyst in the tube nests through hollowed-out cylinders, and the hollowed-out cylinders shake due to springs in the falling process, so that the liquid can be further scraped into the tube nests, and liquid waste is reduced; further, the catalyst is uniformly heated and fully contacted with the liquid, and the catalytic reaction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of catalytic reactors, in particular to a tubular catalytic reactor. Background Art

[0002] In order to avoid large-scale emissions of carbon dioxide or carbon monoxide caused by direct incineration of crude alcohol, key technologies such as crude alcohol distillation separation and catalytic hydrogenation are used. The separated methanol and desalted water enter the methanol cracking reactor together, and are catalytically cracked at high temperature to generate hydrogen and carbon dioxide. The cracked gas enters the pressure swing adsorption device to produce new hydrogen, thereby turning the crude alcohol into treasure. The catalytic hydrogenation reaction can be carried out in a shell-and-tube reactor.

[0003] The prior art has a publication number of CN214765339U, and the technical solution disclosed in this patent document is as follows: a shell and tube reactor, characterized in that it includes a cylinder, the upper and lower ends of the cylinder are respectively connected to the head assembly through a tube sheet, the head assembly at the top of the cylinder is provided with a feed inlet and a multi-point thermocouple temperature measuring port, and the head assembly at the bottom of the cylinder is provided with a synthesis gas outlet; a molten salt inlet is provided at the lower part of the outer side of the cylinder, and a molten salt outlet is provided at the upper part; the cylinder is provided with a plurality of shell and tubes equipped with catalysts and multi-point thermocouples, porcelain balls are respectively installed at both ends of the shell and tube, and the two ends of the shell and tube are respectively connected to the grid pressure plate in the corresponding head assembly through a spring.

[0004] The above patent allows gas and liquid to enter through the feed port and enter the tube array to react with the catalyst, but the feed port is fixed at a certain position above the reactor, and thus cannot flow evenly into each tube array, resulting in a large difference in gas production of each tube array and low catalyst utilization. Utility Model Content

[0005] The purpose of the utility model is to provide a tubular catalytic reactor to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tubular catalytic reactor, comprising a reactor body, wherein a uniform material distribution device is bolted on the upper end of the reactor body, and a tubular reaction structure is installed inside the reactor body.

[0007] The tube-in-tube reaction structure comprises tube sheets, which are arranged above and below the reactor body, tubes are arranged evenly between the tube sheets, rubber pads are bolted to the tube sheets above, and buffer components are installed in the tubes.

[0008] In the above technical solution, rubber pads are arranged on the tube array to cushion the liquid falling from the branch pipe.

[0009] The uniform material distribution device comprises a feed pipe, a feed structure is fixedly installed on the upper part of the feed pipe, and a scraper assembly is rotatably installed in the middle part of the feed pipe.

[0010] As a further preferred embodiment of the present technical solution, heat transfer medium inlets and outlets are arranged on the upper and lower sides of the outer wall of the reactor body, flange 1 is arranged on the upper and lower outer walls of the reactor body, a feed pipe is arranged below the reactor body, flange 2 is arranged on the outer wall above the feed pipe, the feed pipe is clamped with flange 2 and connected by bolts, and a discharge pipe is arranged on the bottom side of the feed pipe.

[0011] In the above technical solution, the reactor body is connected to the discharge pipe and the feed pipe through the flange, and the flange is connected in a clamping manner to avoid leakage of the reactor and facilitate disassembly and assembly.

[0012] As a further preferred embodiment of the present technical solution, the buffer assembly includes mounting rings, which are arranged on the upper and lower sides of the tube shell, and springs are arranged on the bottom side of the upper mounting ring and the top side of the lower mounting ring, and a hollow cylinder is arranged between the two springs, and the catalyst is filled in the hollow cylinder.

[0013] In the above technical solution, during the descent of the liquid into the tube array, the hollow tube is shaken due to the spring, so that the catalyst is heated evenly and fully in contact with the liquid, thereby improving the efficiency of the catalytic reaction.

[0014] As a further preferred embodiment of the present technical solution, the feed structure includes a feed port, which is arranged at the left and right ends of the feed pipe, and the left and right ends of the bottom side of the feed port and located on the top side of the feed pipe are fixedly connected with hollow plates, and the bottom side outlet of the hollow plate is provided with a hollow shell for unloading.

[0015] As a further preferred embodiment of the present technical solution, the hollow shell for material discharge has a circular shape, and outlets on the bottom side of the hollow shell for material discharge are fixedly connected with branch pipes.

[0016] In the above technical solution, each hollow shell for feeding is formed into a circular shape, so that the falling liquid can evenly enter the tube array, so that the catalyst in the tube array is evenly consumed, thereby improving the stability of the reaction.

[0017] As a further preferred embodiment of the present technical solution, the scraper assembly includes a motor, which is connected to the front side of the feed pipe through a bracket bolt, and a gear group is installed at the output end of the motor. A rotating rod is fixedly connected to the output end of the gear group and located in the middle of the feed pipe. The rotating rod passes through the feed pipe through a bearing and extends to the bottom of the inside of the feed pipe. An L-shaped plate is fixedly connected to the outer surface below the rotating rod.

[0018] As a further preferred embodiment of the present technical solution, scrapers are provided on the bottom side of the L-shaped plate and on the side close to the inner wall of the feed pipe, and are in contact with the top side of the rubber pad and the inner wall of the feed pipe.

[0019] In the above technical solution, the liquid remaining on the tube openings of the tube array can be further scraped into the tube array to reduce liquid waste.

[0020] The utility model provides a tubular catalytic reactor, which has the following beneficial effects:

[0021] (1) The utility model installs a uniform distribution device, which allows the liquid to enter the hollow plate and the hollow shell of the discharge material through the feed port, and each hollow shell of the discharge material forms a circular shape, so that the falling liquid can evenly enter the array tubes, so that the catalyst in the array tubes is evenly consumed, and the stability of the reaction is improved. The L-shaped plate and scraper provided in addition can be driven to rotate, and can further scrape the liquid remaining on the tube opening of the array tube into the array tube, thereby reducing liquid waste. In addition, rubber pads are provided on the array tubes, which can cushion the liquid falling from the branch pipe and reduce the damage to the array tube caused by the impact of the falling liquid.

[0022] (2) The utility model installs a tube-in-tube reaction structure and sets a buffer assembly in each tube-in-tube. When liquid enters the tube-in-tube and reacts with the catalyst inside through the hollow tube, the hollow tube vibrates due to the spring during the falling process, so that the catalyst is heated evenly and fully contacts with the liquid, thereby improving the efficiency of the catalytic reaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 It is a cross-sectional view of the utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the tube-in-tube reaction structure of the utility model;

[0026] Figure 4 It is an enlarged view of Figure A of the utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the uniform material distribution device of the utility model;

[0028] In the figure: 1. Reactor body; 11. Heat transfer medium inlet and outlet; 12. Flange 1; 13. Feeding pipe; 14. Flange 2; 15. Discharging pipe; 2. Tube-shell reaction structure; 21. Tube sheet; 22. Tube-shell; 23. Rubber pad; 24. Buffer assembly; 241. Hollow cylinder; 242. Spring; 243. Mounting ring; 3. Uniform distribution device; 31. Feeding pipe; 32. Feeding structure; 321. Feeding port; 322. Hollow plate; 323. Hollow shell for feeding; 324. Branch pipe; 33. Scraper assembly; 331. Motor; 332. Gear set; 333. Rotating rod; 334. L-shaped plate; 335. Scraper. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0030] The utility model provides a technical solution: Figure 1 and Figure 2 As shown, in the present embodiment, a shell-and-tube catalytic reactor comprises a reactor body 1, a uniform distribution device 3 is bolted to the upper end of the reactor body 1, a shell-and-tube reaction structure 2 is installed inside the reactor body 1, a heat transfer medium inlet and outlet 11 are arranged on the upper and lower sides of the outer wall of the reactor body 1, flange 12 is arranged on the upper and lower outer walls of the reactor body 1, a feed pipe 13 is arranged below the reactor body 1, a flange 2 14 is arranged on the outer wall above the feed pipe 13, the feed pipe 13 is clamped with the flange 2 14 and connected by bolts, a discharge pipe 15 is arranged on the bottom side of the feed pipe 13, the reactor body 1 is connected with the feed pipe 13 and the feed pipe 31 by the flange, and the flange is clamped to avoid leakage of the reactor and facilitate disassembly and assembly.

[0031] like Figure 3 and Figure 4 As shown, the tube-in-tube reaction structure 2 includes a tube sheet 21, which is arranged above and below the reactor body 1, and tubes 22 are evenly arranged between the tube sheets 21. The upper tube sheet 21 is bolted with a rubber pad 23, and buffer components 24 are installed in the tubes 22. The buffer components 24 include mounting rings 243, and the mounting rings 243 are arranged on the upper and lower sides of the tubes 22. The bottom side of the upper mounting ring 243 and the top side of the lower mounting ring 243 are both provided with springs 242, and a hollow cylinder 241 is provided between the two springs 242. The hollow cylinder 241 is filled with catalyst, and the buffer components 24 are provided in each tube 22 by installing the tube-in-tube reaction structure 2. When liquid enters the tubes 22 and reacts with the catalyst inside through the hollow cylinder 241, and the hollow cylinder 241 shakes due to the spring 242 during the falling process, the catalyst is heated evenly and fully in contact with the liquid, thereby improving the efficiency of the catalytic reaction.

[0032] like Figure 2 and Figure 5 As shown, the uniform material distribution device 3 includes a feed pipe 31, a feed structure 32 is fixedly installed on the upper part of the feed pipe 31, a scraper assembly 33 is rotatably installed in the middle of the feed pipe 31, and the feed structure 32 includes a feed port 321, the feed port 321 is arranged at the left and right ends of the feed pipe 31, the bottom side of the feed port 321 and the left and right ends located at the top side of the feed pipe 31 are fixedly connected with a hollow plate 322, and the bottom outlet of the hollow plate 322 is provided with a material discharge hollow shell 32 3, the hollow shell 323 for material removal is in a circular shape, and the outlet of the bottom side of the hollow shell 323 is fixedly connected with a branch pipe 324, and the scraper assembly 33 includes a motor 331, and the motor 331 is connected to the front side of the feed pipe 31 through a bracket bolt, and a gear set 332 is installed at the output end of the motor 331, and a rotating rod 333 is fixedly connected to the output end of the gear set 332 and located in the middle of the feed pipe 31, and the rotating rod 333 passes through the feed pipe 31 through a bearing and extends to the feed pipe 31. Below the inside of the material tube 31, an L-shaped plate 334 is fixedly connected to the outer surface below the rotating rod 333. Scrapers 335 are provided on the bottom side of the L-shaped plate 334 and on the side close to the inner wall of the feed tube 31, and are in contact with the top side of the rubber pad 23 and the inner wall of the feed tube 31. By installing a uniform distribution device 3, the liquid enters the hollow plate 322 and the discharge hollow shell 323 through the feed port 321, and each discharge hollow shell 323 forms a circular shape, so that the falling liquid can evenly enter the array tube 22, so that the catalyst in the array tube 22 is evenly consumed, and the stability of the reaction is improved. The L-shaped plate 334 and the scraper 335 provided in addition can be driven to rotate, and can further scrape the liquid remaining on the upper tube port of the array tube 22 into the array tube 22, thereby reducing liquid waste. In addition, rubber pads 23 are provided on the array tube 22, which can cushion the liquid falling from the branch pipe 324 and reduce the damage to the array tube 22 caused by the impact of the falling liquid.

[0033] The utility model provides a tubular catalytic reactor, and the specific working principle is as follows: liquid enters the hollow plate 322 and the unloading hollow shell 323 through the feed port 321, and each unloading hollow shell 323 forms a circular shape, so that the falling liquid can evenly enter the tubular column 22, and at the same time, the motor 331 is started to drive the gear set 332 to rotate, so that the rotating rod 333 drives the L-shaped plate 334 and the scraper 335 to rotate, and the residual liquid is further scraped into 22; when the liquid enters the tubular column 22, it reacts with the catalyst inside through the hollow cylinder 241, and the hollow cylinder 241 is shaken due to the spring 242 during the falling process, so that the catalyst is evenly heated and fully contacts with the liquid, thereby improving the efficiency of the catalytic reaction.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tubular catalytic reactor, comprising a reactor body (1), characterized in that: The upper end bolt of the reactor body (1) is equipped with a uniform material distribution device (3), and a tube-and-tube reaction structure (2) is installed inside the reactor body (1); The tube-in-tube reaction structure (2) comprises a tube sheet (21), the tube sheet (21) being arranged above and below the reactor body (1), tubes (22) being arranged evenly between the tube sheets (21), a rubber pad (23) being bolted to the upper tube sheet (21), and buffer components (24) being installed in the tubes (22); The uniform material distribution device (3) comprises a feed pipe (31), a feed structure (32) is fixedly mounted on the upper part of the feed pipe (31), and a scraper assembly (33) is rotatably mounted in the middle of the feed pipe (31).

2. A tubular catalytic reactor according to claim 1, characterized in that: The upper and lower sides of the outer wall of the reactor body (1) are provided with heat transfer medium inlets and outlets (11); the upper and lower outer walls of the reactor body (1) are both provided with flanges 1 (12); a feed pipe (13) is provided below the reactor body (1); a flange 2 (14) is provided on the outer wall above the feed pipe (13); the feed pipe (13) is clamped with flange 2 (14) and connected by bolts; a discharge pipe (15) is provided on the bottom side of the feed pipe (13).

3. A tubular catalytic reactor according to claim 1, characterized in that: The buffer assembly (24) comprises mounting rings (243), and the mounting rings (243) are arranged on the upper and lower sides inside the tube array (22); the bottom side of the upper mounting ring (243) and the top side of the lower mounting ring (243) are both provided with springs (242); a hollow cylinder (241) is arranged between the two springs (242), and the hollow cylinder (241) is filled with a catalyst.

4. A tubular catalytic reactor according to claim 1, characterized in that: The feed structure (32) comprises a feed port (321), wherein the feed port (321) is arranged at the left and right ends of the feed pipe (31), the left and right ends of the bottom side of the feed port (321) and located at the top side of the feed pipe (31) are fixedly connected with a hollow plate (322), and the bottom outlet of the hollow plate (322) is provided with a discharge hollow shell (323).

5. A tubular catalytic reactor according to claim 4, characterized in that: The hollow shell (323) for material discharge has a circular shape, and outlets on the bottom side of the hollow shell (323) for material discharge are fixedly connected with branch pipes (324).

6. A tubular catalytic reactor according to claim 1, characterized in that: The scraper assembly (33) comprises a motor (331), the motor (331) is connected to the front side of the feed pipe (31) through a bracket bolt, a gear set (332) is installed at the output end of the motor (331), a rotating rod (333) is fixedly connected to the output end of the gear set (332) and located in the middle of the feed pipe (31), the rotating rod (333) passes through the feed pipe (31) through a bearing and extends to the lower part of the feed pipe (31), and an L-shaped plate (334) is fixedly connected to the lower outer surface of the rotating rod (333).

7. A tubular catalytic reactor according to claim 6, characterized in that: The bottom side of the L-shaped plate (334) and the side close to the inner wall of the feed pipe (31) are both provided with a scraper (335), which is in contact with the top side of the rubber pad (23) and the inner wall of the feed pipe (31).

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