Fixed bed hydrogenation reaction device

Abstract

The utility model discloses a fixed bed hydrogenation reaction device and relates to the technical field of fixed bed hydrogenation. The fixed bed hydrogenation reaction device comprises a shell, a shell cover is connected to the shell in a clamped mode, a distribution disc is arranged at the upper end of the interior of the shell, a plurality of scale depositing baskets are arranged on the distribution disc, a plurality of sliding grooves are formed in the shell in a cylindrical mode at equal intervals, sliding blocks are connected into the sliding grooves in a sliding mode, and pressing blocks are arranged in the sliding grooves and located above the sliding blocks in a sliding mode. The pressing block and the sliding block are fixedly connected with the shell cover and the distribution disc correspondingly, supporting plates are symmetrically arranged on the shell, a fixing box is arranged on the supporting plates, a limiting block slides in the fixing box, an electric hydraulic rod is arranged on the side, away from the limiting block, of the fixing box, and the telescopic end of the electric hydraulic rod is fixedly connected with the limiting block. According to the utility model, the distribution disc is detachably mounted in the shell, and the distribution disc can be quickly dismounted and mounted, so that the cleaning efficiency and the cleaning effect of the distribution disc are effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of fixed-bed hydrogenation, and specifically relates to a fixed-bed hydrogenation reaction device. Background Technique

[0002] Catalytic hydrogenation reaction is a common fine chemical unit operation process. Through hydrogenation, the reduction of double-bond olefins, nitro groups, etc. can be achieved, and the protection such as debenzylation can also be realized. Hydrogenation is mostly carried out by kettle reaction. With the continuous improvement of chemical equipment, the use of fixed-bed flow hydrogenation has been greatly improved in terms of hydrogenation efficiency and safety.

[0003] A fixed-bed hydrogenation reaction device is a reactor filled with solid catalyst or solid. The solid particles in the fixed-bed hydrogenation reaction device are in a static state to catalyze the reaction of reactants, and it is mainly used to realize gas-solid phase reactions.

[0004] During the use of a fixed-bed hydrogenation reactor, a distribution plate is usually required to evenly disperse the materials entering the reaction device. In daily use, some raw material residues will remain on the distribution plate, and it is necessary to clean the distribution plate and the fouling basket. The existing distribution plates are usually fixedly connected to the shell by welding, which is not convenient for cleaning. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a fixed-bed hydrogenation reaction device that can overcome or at least partially solve the above problems.

[0006] To solve the above technical problems, the basic concept of the technical solution adopted by the utility model is: a fixed-bed hydrogenation reaction device, including a shell, a shell cover is clamped on the shell, a distribution plate is arranged at the upper end inside the shell, a plurality of fouling baskets are arranged on the distribution plate, a plurality of chutes are arranged on the shell at equal intervals in a cylindrical shape, a slider is slidably connected in the chute, a pressing block is slid above the slider in the chute, the pressing block and the slider are respectively fixedly connected to the shell cover and the distribution plate, support plates are symmetrically arranged on the shell, a fixed box is arranged on the support plate, a limiting block is slidably arranged in the fixed box, an electro-hydraulic rod is arranged on one side of the fixed box away from the limiting block, and the telescopic end of the electro-hydraulic rod is fixedly connected to the limiting block. A slot for cooperating with the limiting block is opened on the shell cover, a discharge pipe and a feed pipe are respectively connected to the shell and the shell cover, and an outlet collector is arranged at the lower end inside the shell.

[0007] In order to prevent the impact between high-speed fluids on the distribution plate, further, an inlet distributor is arranged at the connection between the feed pipe and the shell cover.

[0008] In order to facilitate the removal of the fouling basket from the distribution plate, further, the fouling basket and the distribution plate are detachably connected by threads.

[0009] In order to facilitate the addition and discharge of the catalyst, further, a catalyst addition pipe and a catalyst discharge pipe are connected to one side of the housing, and valves are provided in both the catalyst addition pipe and the catalyst discharge pipe.

[0010] In order to facilitate the stirring of the catalyst, further, a motor is provided at the upper end inside the outlet collector, the output of the motor is fixedly connected with a stirring rod, the stirring rod extends out of the outlet collector, stirring blocks are symmetrically arranged at the lower end inside the housing, and the stirring rod and the stirring blocks are fixedly connected by connecting blocks.

[0011] In order to facilitate the protection of the motor, further, a protective housing is provided at the upper end inside the outlet collector, and the motor is located inside the protective housing.

[0012] After adopting the above technical solution, the present utility model has the following beneficial effects compared with the prior art: The present utility model enables the distribution plate to be detachably installed in the housing, and realizes the quick disassembly and assembly of the distribution plate, effectively improving the cleaning efficiency and cleaning effect of the distribution plate.

[0013] The following further describes in detail the specific implementation manners of the present utility model with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In the drawings:

[0015] Figure 1 is a front view schematic diagram of the fixed-bed hydrogenation reaction device proposed by the present utility model;

[0016] Figure 2 is a sectional view of the fixed-bed hydrogenation reaction device proposed by the present utility model Figure 1 ;

[0017] Figure 3 is a sectional view of the fixed-bed hydrogenation reaction device proposed by the present utility model Figure 2 ;

[0018] Figure 4 is a sectional view of the fixed-bed hydrogenation reaction device proposed by the present utility model Figure 3 ;

[0019] Figure 5 is a partial sectional view of the fixed-bed hydrogenation reaction device proposed by the present utility model;

[0020] Figure 6 is the fixed-bed hydrogenation reaction device proposed by the present utility model Figure 3 The enlarged schematic view at A in.

[0021] In the figure: 1. housing; 101. discharge pipe; 102. catalyst addition pipe; 103. catalyst unloading pipe; 104. support plate; 105. outlet collector; 2. housing cover; 201. feed pipe; 202. inlet distributor; 203. pressing block; 3. distribution plate; 301. fouling basket; 302. slider; 4. fixed box; 401. electro-hydraulic rod; 402. limit block; 5. motor; 501. stirring rod; 502. stirring block; 503. protective housing. Specific embodiments

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments in conjunction with the accompanying drawings in the embodiments of the present utility model. The following embodiments are used to illustrate the present utility model but are not used to limit the scope of the present utility model.

[0023] Embodiment 1:

[0024] Referring to Figures 1 - 6 , a fixed-bed hydrogenation reaction device includes a housing 1, a housing cover 2 is clamped on the housing 1, a distribution plate 3 is arranged at the upper end inside the housing 1, a plurality of fouling baskets 301 are arranged on the distribution plate 3, a plurality of chutes are arranged on the housing 1 at equal intervals in a cylindrical shape, a slider 302 is slidably connected in the chute, a pressing block 203 is slid above the slider 302 in the chute, the pressing block 203 and the slider 302 are respectively fixedly connected to the housing cover 2 and the distribution plate 3, support plates 104 are symmetrically arranged on the housing 1, a fixed box 4 is arranged on the support plates 104, a limit block 402 is slidably arranged in the fixed box 4, an electro-hydraulic rod 401 is arranged on one side of the fixed box 4 away from the limit block 402, and the telescopic end of the electro-hydraulic rod 401 is fixedly connected to the limit block 402. A slot for cooperating with the limit block 402 is opened on the housing cover 2. A discharge pipe 101 and a feed pipe 201 are respectively connected to the housing 1 and the housing cover 2. An outlet collector 105 is arranged at the lower end inside the housing 1;

[0025] An inlet distributor 202 is arranged at the connection between the feed pipe 201 and the housing cover 2;

[0026] When hydrocracking of the material is required, the material enters the housing 1 through the feed pipe 201. After the material enters the inlet distributor 202, the inlet distributor 202 sprays the material to avoid the material directly impacting the distribution plate 3, playing a role of pre-distribution. The distribution plate 3 evenly disperses and drops the material entering the reactor, effectively contacting with hydrogen and catalyst below the distribution plate 3, so that the material undergoes a full hydrocracking reaction. The reacted material drops to the lower end inside the housing 1 and passes through the filtration of the outlet collector 105, and then the reacted material enters the discharge pipe 101. When the distribution plate 3 needs to be cleaned, the electro-hydraulic rod 401 contracts, the limit block 402 moves into the fixed box 4, the housing cover 2 loses the limiting effect, the housing cover 2 is removed, the slider 302 loses the limit of the pressing block 203, and the distribution plate 3 can be taken out for cleaning, realizing the disassembly of the distribution plate 3. When the distribution plate 3 needs to be fixed in the housing 1, the slider 302 is slid into the chute, the distribution plate 3 enters the housing 1, the housing cover 2 is moved so that the pressing block 203 enters the chute to limit the slider 302, the electro-hydraulic rod 401 extends, and the limit block 402 moves into the slot to limit and fix the housing cover 2, realizing the installation and fixation of the distribution plate 3;

[0027] The distribution plate 3 is detachably installed in the housing 1, and the quick disassembly and assembly of the distribution plate 3 are realized, effectively improving the cleaning efficiency and cleaning effect of the distribution plate 3.

[0028] Embodiment 2:

[0029] Refer to Figures 1 - 6 A fixed-bed hydrogenation reaction device is basically the same as that in Embodiment 1. Further, a catalyst addition pipe 102 and a catalyst discharge pipe 103 are connected to one side of the housing 1, and valves are arranged in both the catalyst addition pipe 102 and the catalyst discharge pipe 103;

[0030] An electric motor 5 is arranged at the upper end inside the outlet collector 105. The output of the electric motor 5 is fixedly connected with a stirring rod 501. The stirring rod 501 extends out of the outlet collector 105. Stirring blocks 502 are symmetrically arranged at the lower end inside the housing 1. The stirring rod 501 and the stirring blocks 502 are fixedly connected through a connecting block.

[0031] When the device is working, the electric motor 5 works to drive the stirring rod 501 to rotate with the stirring blocks 502, stirring the catalyst particles around the outlet collector 105 to accelerate the rate of the liquid entering the discharge pipe 101. When the catalyst needs to be added, the valve in the catalyst addition pipe 102 is opened, and the catalyst enters the housing 1 through the catalyst addition pipe 102. When the catalyst needs to be discharged, the valve of the catalyst discharge pipe 103 is opened, and at this time the catalyst is discharged from the catalyst discharge pipe 103. When the electric motor 5 works, the stirring blocks 502 rotate, enabling the catalyst to enter the catalyst discharge pipe 103 more quickly, and thus being discharged from the housing 1;

[0032] Stir the catalyst particles around the outlet collector 105 to accelerate the rate of liquid entering the discharge pipe 101 and facilitate the addition and discharge of the catalyst.

[0033] Example 3:

[0034] Refer to Figures 1 - 6 , a fixed-bed hydrogenation reaction device, which is basically the same as that in Example 1. Further, the fouling basket 301 is detachably connected to the distribution plate 3 by threads. When the distribution plate 3 is taken out of the housing 1 for cleaning, the fouling basket 301 can be detached from the distribution plate 3 to make the distribution plate 3 and the fouling basket 301 cleaner.

[0035] A protective shell 503 is provided at the upper end inside the outlet collector 105, and the motor 5 is located inside the protective shell 503. The protective shell 503 protects the motor 5. Avoid the motor 5 contacting the material and affecting the use of the motor 5.

[0036] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention.

Claims

1. A fixed bed hydrogenation reaction device, characterized in that: The invention comprises a shell (1), a shell cover (2) being clamped on the shell (1), a distribution plate (3) being arranged at the inner upper end of the shell (1), a plurality of dirt baskets (301) being arranged on the distribution plate (3), a plurality of slide grooves being arranged on the shell (1) at equal intervals in a cylindrical shape, a slider (302) being slidably connected in the slide groove, a pressure block (203) being slidably disposed above the slider (302) in the slide groove, the pressure block (203) and the slider (302) being fixedly connected to the shell cover (2) and the distribution plate (3) respectively, and a support plate (104) being symmetrically arranged on the shell (1). A fixing box (4) is arranged on the support plate (104), a limiting block (402) is slidably arranged inside the fixing box (4), an electric hydraulic rod (401) is arranged on a side of the fixing box (4) away from the limiting block (402), a telescopic end of the electric hydraulic rod (401) is fixedly connected to the limiting block (402), a slot for cooperating with the limiting block (402) is provided on the shell cover (2), a discharge pipe (101) and a feed pipe (201) are connected to the shell (1) and the shell cover (2) respectively, and an outlet collector (105) is arranged at the lower end of the shell (1).

2. The fixed bed hydrogenation reaction device according to claim 1, characterized in that: An inlet distributor (202) is provided at the connection between the feed pipe (201) and the shell cover (2).

3. The fixed bed hydrogenation reaction device according to claim 1, characterized in that: The dirt collection basket (301) is detachably connected to the distribution plate (3) via threads.

4. The fixed bed hydrogenation reaction device according to claim 1, characterized in that: One side of the shell (1) is connected to a catalyst addition pipe (102) and a catalyst discharge pipe (103), and valves are provided in the catalyst addition pipe (102) and the catalyst discharge pipe (103).

5. The fixed bed hydrogenation reaction device according to claim 1, characterized in that: A motor (5) is arranged at the upper end of the outlet collector (105); a stirring rod (501) is fixedly connected to the output of the motor (5); the stirring rod (501) extends out of the outlet collector (105); a stirring block (502) is symmetrically arranged at the lower end of the shell (1); the stirring rod (501) and the stirring block (502) are fixedly connected via a connecting block.

6. The fixed bed hydrogenation reaction device according to claim 5, characterized in that: A protective shell (503) is provided at the inner upper end of the outlet collector (105), and the motor (5) is located inside the protective shell (503).

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