Fixed bed reactor

Abstract

The utility model relates to the technical field of chemical equipment, and discloses a fixed bed reactor which comprises a reaction tank, a feeding pipe is fixedly embedded in the upper surface of the reaction tank, a discharging pipe is fixedly embedded in the bottom end of the reaction tank, and a filtering mechanism is fixedly arranged at the top end of the feeding pipe. The filtering mechanism is used for filtering gas entering the reaction tank. The first partition plate and the second partition plate are arranged in the reaction tank, a solid catalyst can be placed between the first partition plate and the second partition plate, a plurality of gas guide pipes are arranged between the first partition plate and the second partition plate, and a plurality of gas guide holes are formed in the surfaces of the gas guide pipes. Reaction gas can be uniformly distributed and conveyed into the catalyst by utilizing the gas guide pipe, so that the reaction gas is uniformly and fully contacted with a catalyst layer, the reaction speed of the gas and the catalyst is increased, heat in the reactor can be uniformly distributed, local overheating and coking of the catalyst layer are avoided, and the utilization rate of the catalyst is favorably increased.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical equipment, and more specifically to a fixed bed reactor. Background Art

[0002] A fixed bed reactor is a reactor that is filled with granular solid catalysts or solid reactants to form a stacked bed layer of a certain height. While the gas or liquid material flows through the gaps between the particles through the static fixed bed layer, a heterogeneous reaction process is achieved.

[0003] A fixed bed reactor with publication number CN219377074U comprises a main body assembly, which comprises a reactor body and a heat preservation cover, wherein the heat preservation cover is fixedly sleeved on the outside of the reactor body, and a heat preservation cavity is provided between the heat preservation cover and the reactor body. When impurities on the filter plate need to be cleaned, the plug rod is pulled to move the plug rod to separate the plug rod from the filter plate, and the filter plate loses its limit position, so that the operator can easily pull the filter plate out of the reactor body.

[0004] The fixed bed reactor proposed in the above patent documents and the reactor in the prior art all have the problems of large catalyst usage, low utilization rate, difficult reaction heat recovery, and low comprehensive energy efficiency; the reactor forms a large reaction temperature gradient in the axial and radial directions, and the catalyst bed layer is locally overheated and coked, which reduces the catalyst utilization rate. Therefore, it is necessary to improve the problems existing in the existing reactor. Utility Model Content

[0005] In order to overcome the above defects of the prior art, the utility model provides a fixed bed reactor to solve the problems existing in the above background technology.

[0006] The utility model provides the following technical solution: a fixed bed reactor, comprising a reaction tank, a feed pipe is fixedly embedded on the upper surface of the reaction tank, a discharge pipe is fixedly embedded at the bottom of the reaction tank, a filter mechanism is fixedly arranged at the top of the feed pipe, and the filter mechanism is used to filter the neutral gas entering the reaction tank;

[0007] The inner wall of the reaction tank is fixedly connected with a first partition and a second partition, a plurality of air guide tubes are fixedly connected between the first partition and the second partition, a plurality of air guide holes are opened on the surface of the air guide tube, a plurality of air inlet holes are opened on the upper surface of the first partition, the positions of the air inlet holes correspond to the top end of the air guide tube, a plurality of air outlet holes are opened on the surface of the second partition, and the positions of the air outlet holes are staggered with the bottom end of the air guide tube;

[0008] The filtering mechanism includes a filter box, an air pipe is fixedly embedded in the side of the filter box, a driving motor is fixedly installed on the upper surface of the filter box, the output shaft of the driving motor extends to the interior of the filter box and is fixedly connected to a rotating cylinder, an annular filter screen is fixedly connected to the surface of the rotating cylinder, and the height of the annular filter screen corresponds to the air pipe.

[0009] Furthermore, a cleaning mechanism is provided inside the filter box, and the cleaning mechanism includes a strip mounting shell installed on the side of the filter box, a side door of the strip mounting shell is provided with a threaded hole, an inner wall of the threaded hole is threadedly connected with a push screw, one end of the push screw extends to the interior of the filter box, and the end of the push screw is rotatably connected to a movable frame.

[0010] Furthermore, a cleaning brush is fixedly connected to the surface of the movable frame, the position of the cleaning brush corresponds to the rotating cylinder, and the cleaning brush overlaps the surface of the annular filter screen.

[0011] Furthermore, one end of the advancing screw rod away from the movable frame extends to the outside of the strip-shaped mounting shell and is fixedly connected with a handle.

[0012] Furthermore, two guide slide bars are fixedly connected to the side of the movable frame, two guide limit holes are provided on the surface of the strip-shaped mounting shell, and the guide slide bars are slidably connected to the inner walls of the guide limit holes.

[0013] Furthermore, an exhaust pipe is fixedly embedded in the lower surface of the rotating cylinder, the bottom end of the exhaust pipe extends to the inside of the feed pipe, and the exhaust pipe is rotatably connected to the lower surface of the filter box through a bearing.

[0014] Furthermore, the strip-shaped mounting shell and the surface of the filter box are fixed with mounting blocks in corresponding positions, the surface of the mounting blocks are provided with bolt holes, the inner walls of the bolt holes are threadedly connected with fastening bolts, and the strip-shaped mounting shell is fixedly connected to the surface of the filter box through the mounting blocks and the fastening bolts.

[0015] Furthermore, a circular filter is fixedly provided on the inner wall of the air outlet, and the circular filter is used to block the catalyst.

[0016] Technical effects and advantages of the utility model:

[0017] 1. The utility model provides a first partition and a second partition inside the reaction tank, so that a solid catalyst can be placed between the first partition and the second partition, and a plurality of air guide pipes are provided between the first partition and the second partition, and a plurality of air guide holes are opened on the surface of the air guide pipes, so that the raw gas can be evenly distributed and transported to the inside of the catalyst by means of the air guide pipes, so that the gas and the catalyst layer can be evenly and fully contacted, the reaction speed of the gas and the catalyst can be increased, and the heat inside the reactor can be evenly distributed, so as to avoid local overheating and coking of the catalyst layer, which is beneficial to improving the utilization rate of the catalyst.

[0018] 2. The utility model provides a filtering mechanism at the top of the feed pipe of the reaction tank. When the reaction gas is input into the reaction tank, the filtering mechanism can be used to filter the solid impurities in the reaction gas. By providing a rotating drum and an annular filter screen, the driving motor can be used to drive the rotating drum to rotate, thereby expanding the contact surface between the gas and the annular filter screen and improving the filtering efficiency. By providing a cleaning mechanism inside the filter box, when the annular filter screen needs to be cleaned, the cleaning brush can be driven to contact the surface of the annular filter screen by rotating the propulsion screw, so that the annular filter screen and the cleaning brush produce relative movement, and then the impurities accumulated on the surface of the annular filter screen are removed, so as to achieve the effect of convenient cleaning of the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the reaction tank of the utility model;

[0020] Figure 2 This is a schematic diagram of the front cross-section structure of the reaction tank of the utility model;

[0021] Figure 3 This is a schematic diagram of the front cross-section structure of the first partition and the second partition of the utility model;

[0022] Figure 4 It is a schematic diagram of the front section structure of the filtering mechanism of the utility model.

[0023] The accompanying drawings are marked as follows: 1, reaction tank; 2, feed pipe; 3, discharge pipe; 4, filtering mechanism; 5, cleaning mechanism; 6, second partition; 7, air guide pipe; 8, air guide hole; 9, air inlet hole; 10, air outlet hole; 11, mounting block; 12, circular filter screen; 13, first partition;

[0024] Filter box; 402, air pipe; 403, drive motor; 404, rotating cylinder; 405, annular filter; 406, exhaust pipe;

[0025] 501, strip-shaped mounting shell; 502, push screw; 503, movable frame; 504, cleaning brush; 505, handle; 506, guide slide rod. DETAILED DESCRIPTION

[0026] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative. The fixed bed reactor involved in the present invention is not limited to the various structures recorded in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0027] Reference Figure 1-4 The utility model provides a fixed bed reactor, including a reaction tank 1, a feed pipe 2 is fixedly embedded on the upper surface of the reaction tank 1, a discharge pipe 3 is fixedly embedded at the bottom end of the reaction tank 1, and a filter mechanism 4 is fixedly arranged at the top end of the feed pipe 2, and the filter mechanism 4 is used to filter the neutral gas entering the reaction tank 1.

[0028] The inner wall of the reaction tank 1 is fixedly connected with a first partition plate 13 and a second partition plate 6, and a plurality of air ducts 7 are fixedly connected between the first partition plate 13 and the second partition plate 6. A plurality of air ducts 7 are provided on the surface of the air duct 7. A plurality of air inlet holes 9 are provided on the upper surface of the first partition plate 13, and the positions of the air inlet holes 9 correspond to the top of the air duct 7. A plurality of air outlet holes 10 are provided on the surface of the second partition plate 6, and a circular filter screen 12 is fixedly provided on the inner wall of the air outlet hole 10, and the circular filter screen 12 is used to block the catalyst. The positions of the air outlet holes 10 are staggered with the bottom end of the air duct 7.

[0029] Through the above technical scheme, the staggered air outlet holes 10 can prevent the gas in the air duct 7 from directly passing through the second partition 6. The gas must enter the catalyst layer from the air duct holes 8 on the surface of the air duct 7 and then be discharged through the air outlet holes 10 on the surface of the second partition 6, thereby achieving the effect of full contact between the gas and the catalyst.

[0030] It is worth noting that by arranging the first partition 6 and the second partition 13 inside the reaction tank 1, a solid catalyst can be placed between the first partition 6 and the second partition 13, and a plurality of air ducts 7 are arranged between the first partition 6 and the second partition 13. After the reaction gas is input into the interior of the reaction tank 1 through the feed pipe 2, it enters the air duct 7 through the plurality of air inlet holes 9 on the surface of the first partition 13, and then the raw gas is evenly distributed and transported to the interior of the catalyst through the air duct holes 8 on the surface of the air duct 7, so that the gas and the catalyst layer are evenly and fully contacted, the reaction rate of the gas and the catalyst is improved, and the heat inside the reactor can be evenly distributed, avoiding local overheating and coking of the catalyst layer, which is beneficial to improving the utilization rate of the catalyst. The gas after reacting with the catalyst enters the bottom of the reaction tank 1 through the air outlet holes 10 on the lower surface of the second partition 6, and is finally discharged from the reaction tank 1 through the discharge pipe 3.

[0031] The filtering mechanism 4 includes a filter box 401, an air supply pipe 402 is fixedly embedded in the side of the filter box 401, a drive motor 403 is fixedly installed on the upper surface of the filter box 401, the output shaft of the drive motor 403 extends to the interior of the filter box 401, and is fixedly connected to a rotating cylinder 404, and an annular filter screen 405 is fixedly connected to the surface of the rotating cylinder 404, and the height of the annular filter screen 405 corresponds to the air supply pipe 402.

[0032] It is worth noting that by arranging a filtering mechanism 4 on the top of the feed pipe 2 of the reaction tank 1, when the reaction gas is input into the reaction tank 1, the filtering mechanism 4 can be used to filter the solid impurities in the reaction gas, and by arranging a rotating cylinder 404 and an annular filter screen 405, the driving motor 403 can be used to drive the rotating cylinder 404 to rotate, thereby expanding the contact area between the gas and the annular filter screen 405 and improving the filtering efficiency.

[0033] An exhaust pipe 406 is fixedly embedded in the lower surface of the rotating cylinder 404 , the bottom end of the exhaust pipe 406 extends to the inside of the feed pipe 2 , and the exhaust pipe 406 is rotatably connected to the lower surface of the filter box 401 via a bearing.

[0034] A cleaning mechanism 5 is provided inside the filter box 401, and the cleaning mechanism 5 includes a strip mounting shell 501 mounted on the side of the filter box 401, and mounting blocks 11 corresponding to the positions of the strip mounting shell 501 and the surfaces of the filter box 401 are fixed, and bolt holes are provided on the surfaces of the mounting blocks 11, and fastening bolts are threadedly connected to the inner walls of the bolt holes, and the strip mounting shell 501 is fixedly connected to the surface of the filter box 401 through the mounting blocks 11 and the fastening bolts.

[0035] A threaded hole is provided on the side door of the strip mounting shell 501, and a push screw 502 is threadedly connected to the inner wall of the threaded hole. One end of the push screw 502 extends to the interior of the filter box 401, and the end of the push screw 502 is rotatably connected to a movable frame 503. A cleaning brush 504 is fixedly connected to the surface of the movable frame 503. The position of the cleaning brush 504 corresponds to the rotating cylinder 404, and the cleaning brush 504 overlaps the surface of the annular filter screen 405.

[0036] It is worth mentioning that by arranging a cleaning mechanism 5 inside the filter box 401, when the annular filter 405 needs to be cleaned, the handle 505 can be turned to drive the push screw 502 to rotate, and then drive the push screw 502 to move toward the rotating cylinder 404, and at the same time drive the movable frame 503 and the cleaning brush 504 to contact the surface of the annular filter 405. Under the rotation of the rotating cylinder 404, the annular filter 405 and the cleaning brush 504 produce relative movement, and then the cleaning brush 504 is used to remove impurities adsorbed on the surface of the annular filter 405, thereby achieving the effect of facilitating the cleaning of the filter.

[0037] Two guide slide bars 506 are fixedly connected to the side of the movable frame 503 , and two guide limit holes are provided on the surface of the strip-shaped installation shell 501 . The guide slide bars 506 are slidably connected to the inner walls of the guide limit holes.

[0038] Through the above technical solution, the guide slide bar 506 and the guide limit hole can be used to guide and limit the movable frame 503 to prevent the movable frame 503 from rotating with the propulsion screw 502, so that the cleaning brush 504 maintains horizontal and linear movement.

[0039] Finally, it should be noted that the drawings of the embodiments disclosed in the present utility model only involve structures related to the embodiments disclosed in the present utility model. The above description is only a preferred embodiment of the present utility model and is not used to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A fixed bed reactor, comprising a reaction tank (1), characterized in that: A feed pipe (2) is fixedly embedded on the upper surface of the reaction tank (1), and a discharge pipe (3) is fixedly embedded at the bottom end of the reaction tank (1); a filter mechanism (4) is fixedly disposed at the top end of the feed pipe (2), and the filter mechanism (4) is used to filter the neutral gas entering the reaction tank (1); The inner wall of the reaction tank (1) is fixedly connected with a first partition (13) and a second partition (6); a plurality of air guide tubes (7) are fixedly connected between the first partition (13) and the second partition (6); a plurality of air guide holes (8) are provided on the surface of the air guide tube (7); a plurality of air inlet holes (9) are provided on the upper surface of the first partition (13); the positions of the air inlet holes (9) correspond to the top ends of the air guide tubes (7); a plurality of air outlet holes (10) are provided on the surface of the second partition (6); the positions of the air outlet holes (10) are staggeredly distributed at the bottom ends of the air guide tubes (7); The filtering mechanism (4) comprises a filter box (401), an air supply pipe (402) is fixedly embedded in the side of the filter box (401), a driving motor (403) is fixedly mounted on the upper surface of the filter box (401), an output shaft of the driving motor (403) extends into the interior of the filter box (401) and is fixedly connected to a rotating cylinder (404), an annular filter screen (405) is fixedly connected to the surface of the rotating cylinder (404), and the height of the annular filter screen (405) corresponds to that of the air supply pipe (402).

2. A fixed bed reactor according to claim 1, characterized in that: A cleaning mechanism (5) is arranged inside the filter box (401), and the cleaning mechanism (5) comprises a strip-shaped mounting shell (501) mounted on the side of the filter box (401), a side door of the strip-shaped mounting shell (501) is provided with a threaded hole, an inner wall of the threaded hole is threadedly connected to a push screw (502), one end of the push screw (502) extends into the interior of the filter box (401), and the end of the push screw (502) is rotatably connected to a movable frame (503).

3. A fixed bed reactor according to claim 2, characterized in that: A cleaning brush (504) is fixedly connected to the surface of the movable frame (503); the position of the cleaning brush (504) corresponds to the rotating cylinder (404), and the cleaning brush (504) overlaps the surface of the annular filter screen (405).

4. A fixed bed reactor according to claim 2, characterized in that: One end of the propulsion screw rod (502) away from the movable frame (503) extends to the outside of the strip-shaped mounting shell (501) and is fixedly connected to a handle (505).

5. A fixed bed reactor according to claim 2, characterized in that: Two guide slide bars (506) are fixedly connected to the side of the movable frame (503), and two guide limit holes are provided on the surface of the strip-shaped installation shell (501). The guide slide bars (506) are slidably connected to the inner walls of the guide limit holes.

6. A fixed bed reactor according to claim 1, characterized in that: An exhaust pipe (406) is fixedly embedded in the lower surface of the rotating cylinder (404), the bottom end of the exhaust pipe (406) extends to the inside of the feed pipe (2), and the exhaust pipe (406) is rotatably connected to the lower surface of the filter box (401) via a bearing.

7. A fixed bed reactor according to claim 2, characterized in that: The surfaces of the strip-shaped mounting shell (501) and the filter box (401) are both fixed with mounting blocks (11) at corresponding positions, the surface of the mounting block (11) is provided with a bolt hole, the inner wall of the bolt hole is threadedly connected with a fastening bolt, and the strip-shaped mounting shell (501) is fixedly connected to the surface of the filter box (401) via the mounting block (11) and the fastening bolt.

8. A fixed bed reactor according to claim 1, characterized in that: A circular filter screen (12) is fixedly arranged on the inner wall of the gas outlet hole (10), and the circular filter screen (12) is used to block the catalyst.

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