Pre-conversion reactor

Abstract

The utility model relates to the technical field of pre-conversion reactors, and discloses a pre-conversion reactor which comprises a pre-conversion reactor main body, an upper connecting pipeline is fixed at the top of the pre-conversion reactor main body, and a lower connecting pipeline is fixed at the bottom of the pre-conversion reactor main body; the pre-conversion reactor is provided with the auxiliary positioning device, so that the pre-conversion catalyst can be conveniently positioned, the purpose that the pre-conversion catalyst is easily and quickly positioned when being fixed is achieved, the assembly efficiency is improved, and a material pre-converted by the pre-conversion reactor main body enters a conversion furnace; the converter can improve the carbon space velocity, reduce the number of furnace tubes, save investment and reduce energy consumption; the device is provided with the maintenance device, locking of the position of the high-temperature-resistant mounting block can be conveniently relieved, then a connecting handle can be pulled to open the high-temperature-resistant movable door, the opening and closing locking operation of the high-temperature-resistant movable door is easy and convenient, and the purpose that the interior of the outer heating sleeve is easy to maintain is achieved.

Description

Technical Field

[0001] This utility model relates to the field of preconversion reactor technology, specifically a preconversion reactor. Background Technology

[0002] Refinery hydrogen is mainly used for hydrogenation of gasoline and diesel to improve oil quality. Steam reforming is currently the main hydrogen production technology in refineries. The feedstocks used include natural gas, refinery gas, liquefied petroleum gas, and naphtha. The pre-conversion technology of hydrogen production units involves connecting a pre-conversion reactor in series before the conventional primary reformer. Its purpose is to transfer part of the load of the conventional reformer to the pre-conversion reactor and recover the heat from the reformer flue gas for the pre-conversion process, thereby reducing the heat load of the primary reformer, reducing the fuel consumption of the reformer, and also converting high-carbon hydrocarbons in the feedstock, preventing carbon buildup on the primary reformer catalyst, removing residual sulfides, protecting the primary reformer and shift catalyst, and extending their service life.

[0003] However, in existing pre-conversion reactors, the pre-conversion catalyst is difficult to position quickly during fixation, affecting assembly efficiency. Therefore, those skilled in the art have provided a pre-conversion reactor to solve the problems mentioned in the background. Utility Model Content

[0004] The purpose of this invention is to provide a pre-conversion reactor to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A pre-conversion reactor includes a pre-conversion reactor body, an upper connecting pipe fixed to the top of the pre-conversion reactor body, a lower connecting pipe fixed to the bottom of the pre-conversion reactor body, auxiliary positioning devices embedded and fixed on both sides of the pre-conversion reactor body, a maintenance device provided on the outside of the pre-conversion reactor body, and an outer heating jacket fixed on the outside of the pre-conversion reactor body.

[0007] The auxiliary positioning device includes a high-temperature resistant housing. A high-temperature resistant spring is provided on one inner wall of the high-temperature resistant housing. One end of the high-temperature resistant spring is connected to a high-temperature resistant movable plate. A high-temperature resistant movable frame is connected to the side of the high-temperature resistant movable plate away from the high-temperature resistant housing. A high-temperature resistant positioning sleeve is fixed to the side of the high-temperature resistant movable frame away from the high-temperature resistant movable plate. A high-temperature resistant positioning block is fixed to the side of the high-temperature resistant positioning sleeve away from the high-temperature resistant movable frame. A high-temperature resistant threaded post is fixed to the side of the high-temperature resistant movable plate away from the high-temperature resistant movable frame. A high-temperature resistant handle pad is fixed to one end of the high-temperature resistant threaded post. A high-temperature resistant nut is threadedly connected to the outer side of the high-temperature resistant threaded post.

[0008] As a further embodiment of this utility model: the maintenance device includes a high-temperature resistant movable door, a connecting handle fixed to the outer side of the high-temperature resistant movable door, a high-temperature resistant mounting block fixed to one side of the high-temperature resistant movable door, a first high-temperature resistant semi-threaded rod fixed to the outer side of the high-temperature resistant mounting block, a second high-temperature resistant semi-threaded rod fixed to the outer side of the pre-conversion reactor body, high-temperature resistant gaskets movably sleeved on the outer sides of the first and second high-temperature resistant semi-threaded rods, and high-temperature resistant threaded sleeves threadedly connected to the outer sides of the first and second high-temperature resistant semi-threaded rods.

[0009] As a further improvement of this utility model: the high-temperature resistant movable door and the pre-conversion reactor body are rotatably connected by a rotating shaft, and a high-temperature resistant sealing strip is provided on the side of the high-temperature resistant movable door near the pre-conversion reactor body.

[0010] As a further embodiment of this utility model: the radius of the first high-temperature resistant semi-threaded rod is equal to that of the second high-temperature resistant semi-threaded rod, and the outer side of the high-temperature resistant gasket has a through hole that is adapted to the size of the first high-temperature resistant semi-threaded rod and the second high-temperature resistant semi-threaded rod.

[0011] As a further improvement of this utility model: one side of the high-temperature resistant shell is embedded and fixed inside the pre-conversion reactor body, and the outer side of the high-temperature resistant nut is provided with anti-slip texture.

[0012] As a further improvement of this utility model: the pre-conversion reactor body is provided with a pre-conversion catalyst inside, and the pre-conversion catalyst is provided with a positioning groove that matches the size of the high-temperature resistant positioning block.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This device is equipped with an auxiliary positioning device. The pre-conversion catalyst is installed inside the pre-conversion reactor body. The high-temperature resistant positioning block can be inserted into the positioning groove of the pre-conversion catalyst to facilitate the positioning of the pre-conversion catalyst and make it easier to fix it later. This achieves the purpose of easy and quick positioning of the pre-conversion catalyst during fixing, improving assembly efficiency. The material pre-converted by the pre-conversion reactor body then enters the conversion furnace. At this time, the conversion furnace can increase carbon space velocity, reduce the number of furnace tubes, save investment and reduce energy consumption.

[0015] 2. This device is equipped with a maintenance device that can easily unlock the high-temperature resistant mounting block. Then, the connecting handle can be pulled to open the high-temperature resistant movable door. The opening and closing of the high-temperature resistant movable door is simple, which makes it easy to maintain the internal parts of the external heating jacket. Attached Figure Description

[0016] Figure 1 This is a three-dimensional view of a pre-conversion reactor;

[0017] Figure 2 This is a schematic diagram of an auxiliary positioning device in a pre-conversion reactor;

[0018] Figure 3 This is a schematic diagram of a maintenance device in a pre-conversion reactor.

[0019] In the diagram: 1. Pre-conversion reactor body; 2. Upper connecting pipe; 3. Lower connecting pipe; 4. Auxiliary positioning device; 41. High-temperature resistant shell; 42. High-temperature resistant spring; 43. High-temperature resistant movable plate; 44. High-temperature resistant movable frame; 45. High-temperature resistant positioning sleeve; 46. High-temperature resistant positioning block; 47. High-temperature resistant threaded column; 48. High-temperature resistant handle pad; 49. High-temperature resistant nut; 5. Maintenance device; 51. High-temperature resistant movable door; 52. Connecting handle; 53. High-temperature resistant mounting block; 54. First high-temperature resistant semi-threaded rod; 55. Second high-temperature resistant semi-threaded rod; 56. High-temperature resistant gasket; 57. High-temperature resistant threaded sleeve; 6. External heating sleeve. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-3 In this embodiment of the present invention, a pre-conversion reactor includes a pre-conversion reactor body 1, an upper connecting pipe 2 fixed to the top of the pre-conversion reactor body 1, a lower connecting pipe 3 fixed to the bottom of the pre-conversion reactor body 1, auxiliary positioning devices 4 embedded and fixed on both sides of the pre-conversion reactor body 1, a maintenance device 5 provided on the outside of the pre-conversion reactor body 1, and an outer heating sleeve 6 fixed on the outside of the pre-conversion reactor body 1.

[0022] The auxiliary positioning device 4 includes a high-temperature resistant shell 41. A high-temperature resistant spring 42 is provided on one inner wall of the high-temperature resistant shell 41. One end of the high-temperature resistant spring 42 is connected to a high-temperature resistant movable plate 43. A high-temperature resistant movable frame 44 is connected to the side of the high-temperature resistant movable plate 43 away from the high-temperature resistant shell 41. A high-temperature resistant positioning sleeve 45 is fixed to the side of the high-temperature resistant movable frame 44 away from the high-temperature resistant movable plate 43. A high-temperature resistant positioning block 46 is fixed to the side of the high-temperature resistant positioning sleeve 45 away from the high-temperature resistant movable frame 44. A pre-conversion catalyst is provided inside the pre-conversion catalyst, and a positioning groove adapted to the size of the high-temperature resistant positioning block 46 is opened inside the pre-conversion catalyst. A high-temperature resistant threaded column 47 is fixed to the side of the high-temperature resistant movable plate 43 away from the high-temperature resistant movable frame 44. A high-temperature resistant handle pad 48 is fixed to one end of the high-temperature resistant threaded column 47. A high-temperature resistant nut 49 is threadedly connected to the outside of the high-temperature resistant threaded column 47. One side of the high-temperature resistant shell 41 is embedded and fixed inside the pre-conversion reactor body 1. Anti-slip texture is provided on the outside of the high-temperature resistant nut 49.

[0023] In one embodiment of this utility model, the maintenance device 5 includes a high-temperature resistant movable door 51, a connecting handle 52 fixed to the outside of the high-temperature resistant movable door 51, a high-temperature resistant mounting block 53 fixed to one side of the high-temperature resistant movable door 51, a first high-temperature resistant semi-threaded rod 54 fixed to the outside of the high-temperature resistant mounting block 53, a second high-temperature resistant semi-threaded rod 55 fixed to the outside of the pre-conversion reactor body 1, a high-temperature resistant gasket 56 movably sleeved on the outside of the first high-temperature resistant semi-threaded rod 54 and the second high-temperature resistant semi-threaded rod 55, a high-temperature resistant threaded sleeve 57 threadedly connected to the outside of the first high-temperature resistant semi-threaded rod 54 and the second high-temperature resistant semi-threaded rod 55, the high-temperature resistant movable door 51 and the pre-conversion reactor body 1 are rotatably connected by a rotating shaft, a high-temperature resistant sealing strip is provided on the side of the high-temperature resistant movable door 51 near the pre-conversion reactor body 1, the radius of the first high-temperature resistant semi-threaded rod 54 is equal to the radius of the second high-temperature resistant semi-threaded rod 55, and the outside of the high-temperature resistant gasket 56 has a through hole that matches the size of the first high-temperature resistant semi-threaded rod 54 and the second high-temperature resistant semi-threaded rod 55.

[0024] The working principle of this invention is as follows: The device is equipped with an auxiliary positioning device 4. A pre-conversion catalyst is placed inside the main body 1 of the pre-conversion reactor. The pre-conversion catalyst is prepared by co-precipitation, where aluminum hydroxide and magnesium oxide are mixed, ball-milled, and then calcined at 1200℃ to form a magnesium-aluminum spinel carrier. A sodium carbonate precipitant solution and a mixed salt solution of nickel nitrate, lanthanum nitrate, and copper nitrate are added dropwise to a three-necked flask in a parallel flow, with magnetic stirring activated simultaneously. During precipitation, the pH of the slurry is controlled between 6.5 and 7.0. After the solution is added dropwise, the calcined carrier is added, and the oil bath temperature is raised to 65℃~70℃. The mixture is stirred and aged for one hour. After aging, it is filtered using a vacuum filter, washed with deionized water to remove sodium ions, and then the filter cake is placed in a drying oven and dried at 100℃ for 3~4 hours. The dried filter cake is ground into a fine powder in a mortar and dried in a drying oven for 3-4 hours. Then it is calcined in a box furnace at 400°C for two hours. The calcined mixture is then added to graphite and deionized water and pressed into tablets at 6.0 MPa. After forming, it is naturally air-dried to produce a pre-conversion catalyst. First, pull the high-temperature resistant handle pad 48 outward. When the pre-conversion catalyst is installed and fixed inside the pre-conversion reactor body 1, after placing the pre-conversion catalyst at the installation position of the pre-conversion reactor body 1, the high-temperature resistant handle pad 48 can be released. The high-temperature resistant spring 42 in the high-temperature resistant shell 41 pushes the high-temperature resistant movable plate 43 to move, allowing the high-temperature resistant movable plate 43 to drive the high-temperature resistant movable frame 44 and the high-temperature resistant positioning sleeve 45 to move. This allows the corresponding surface of the high-temperature resistant positioning sleeve 45 to fit against the outside of the pre-conversion catalyst, and the high-temperature resistant positioning block 46 can be inserted into the positioning groove of the pre-conversion catalyst, which facilitates the positioning of the pre-conversion catalyst and makes subsequent fixing easier. This achieves the purpose of easy and quick positioning of the pre-conversion catalyst during fixing, improving the efficiency of the installation. To improve efficiency, the material pre-converted by the pre-conversion reactor body 1 enters the conversion furnace. At this time, the conversion furnace can increase carbon space velocity, reduce the number of furnace tubes, save investment, and reduce energy consumption. This device is equipped with a maintenance device 5. When the high-temperature resistant movable door 51 on the outside of the outer heating jacket 6 is closed, the second high-temperature resistant semi-threaded rod 55 and the first high-temperature resistant semi-threaded rod 54 are threadedly connected to the outer side of the high-temperature resistant threaded sleeve 57. When it is necessary to open the maintenance device 5 to perform internal maintenance of the pre-conversion reactor body 1, the high-temperature resistant threaded sleeve 57 can be rotated counterclockwise to remove the high-temperature resistant threaded sleeve 57 from the outside of the second high-temperature resistant semi-threaded rod 55 and the first high-temperature resistant semi-threaded rod 54. Then, the high-temperature resistant gasket 56 can also be removed from the outside of the second high-temperature resistant semi-threaded rod 55 and the first high-temperature resistant semi-threaded rod 54. This can easily release the lock of the high-temperature resistant mounting block 53. Then, the connecting handle 52 can be pulled to open the high-temperature resistant movable door 51. The opening, closing, and locking operations of the high-temperature resistant movable door 51 are simple, achieving the purpose of easy internal maintenance of the outer heating jacket 6.

[0025] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A pre-reforming reactor comprising a pre-reforming reactor body (1), characterized in that, The top of the pre-reforming reactor body (1) is fixed with an upper connecting pipeline (2), the bottom of the pre-reforming reactor body (1) is fixed with a lower connecting pipeline (3), both sides of the pre-reforming reactor body (1) are embedded with auxiliary positioning devices (4), the outer side of the pre-reforming reactor body (1) is provided with a maintenance device (5), and the outer side of the pre-reforming reactor body (1) is fixed with an external heating jacket (6). The auxiliary positioning device (4) comprises a high-temperature-resistant shell (41), the inner wall of one side of the high-temperature-resistant shell (41) is provided with a high-temperature-resistant spring (42), one end of the high-temperature-resistant spring (42) is connected with a high-temperature-resistant movable plate (43), the side, away from the high-temperature-resistant shell (41), of the high-temperature-resistant movable plate (43) is connected with a high-temperature-resistant movable frame (44), the side, away from the high-temperature-resistant movable plate (43), of the high-temperature-resistant movable frame (44) is fixed with a high-temperature-resistant positioning sleeve (45), the side, away from the high-temperature-resistant movable frame (44), of the high-temperature-resistant positioning sleeve (45) is fixed with a high-temperature-resistant positioning block (46), the side, away from the high-temperature-resistant movable frame (44), of the high-temperature-resistant movable plate (43) is fixed with a high-temperature-resistant threaded column (47), one end of the high-temperature-resistant threaded column (47) is fixed with a high-temperature-resistant handle pad (48), and the outer side of the high-temperature-resistant threaded column (47) is threadedly connected with a high-temperature-resistant nut (49).

2. A pre-reformer according to claim 1, c h a r a c t e r i z e d in that The maintenance device (5) comprises a high-temperature-resistant movable door (51), the outer side of the high-temperature-resistant movable door (51) is fixed with a connecting handle (52), one side of the high-temperature-resistant movable door (51) is fixed with a high-temperature-resistant mounting block (53), the outer side of the high-temperature-resistant mounting block (53) is fixed with a first high-temperature-resistant half-threaded rod (54), the outer side of the pre-reforming reactor body (1) is fixed with a second high-temperature-resistant half-threaded rod (55), the outer sides of the first high-temperature-resistant half-threaded rod (54) and the second high-temperature-resistant half-threaded rod (55) are movably sleeved with a high-temperature-resistant gasket (56), and the outer sides of the first high-temperature-resistant half-threaded rod (54) and the second high-temperature-resistant half-threaded rod (55) are threadedly connected with a high-temperature-resistant threaded sleeve (57).

3. A pre-reformer according to claim 2, c h a r a c t e r i z e d in that The high-temperature-resistant movable door (51) and the pre-reforming reactor body (1) are rotationally connected through a rotating shaft, and the side, close to the pre-reforming reactor body (1), of the high-temperature-resistant movable door (51) is provided with a high-temperature-resistant sealing strip.

4. A pre-reformer according to claim 2, c h a r a c t e r i z e d in that The radius size of the first high-temperature-resistant half-threaded rod (54) is equal to that of the second high-temperature-resistant half-threaded rod (55), and the outer side of the high-temperature-resistant gasket (56) is provided with a through hole matched in size with the first high-temperature-resistant half-threaded rod (54) and the second high-temperature-resistant half-threaded rod (55).

5. A pre-reformer according to claim 1, characterized in that One side of the high-temperature-resistant shell (41) is embedded and fixed in the interior of the pre-reforming reactor body (1), and the outer side of the high-temperature-resistant nut (49) is provided with anti-skid lines.

6. A pre-reformer according to claim 1, characterized in that The interior of the pre-reforming reactor body (1) is provided with a pre-reforming catalyst, and the interior of the pre-reforming catalyst is provided with a positioning groove matched in size with the high-temperature-resistant positioning block (46).

Images