Catalytic hydrogenation reaction device

Abstract

The utility model discloses a catalytic hydrogenation reaction device, which relates to the field of hydrogenation reaction equipment and comprises a reaction tank body and support legs, four catalytic components are inserted in the reaction tank body, an aeration disc and a stirring shaft are mounted in the reaction tank body, an exhaust fan and a gas storage tank are mounted at the bottom of the reaction tank body, the exhaust fan is communicated with the gas storage tank and the aeration disc, and the aeration disc is communicated with the stirring shaft. A circulating pump is installed on the outer side of the reaction tank body and communicated with the interior of the reaction tank body and the gas storage tank, a first stirrer and a second stirrer are installed on the stirring shaft, an annular iron sheet and an annular rubber sheet are embedded in the top wall of the reaction tank body, and a magnetic sheet is bonded to the bottom of a cover plate of the catalysis assembly. According to the utility model, an inactivated catalyst can be replaced, the contact area between hydrogen and a reaction stock solution and the contact area between the catalyst and the reaction stock solution are increased, the hydrogen is recycled, the utilization rate of the hydrogen is improved, and the catalytic hydrogenation reaction effect is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydrogenation reaction equipment field, concretely is a catalytic hydrogenation reaction device. BACKGROUND

[0002] Catalytic hydrogenation reaction refers to the reaction process between organic compounds and hydrogen molecules under the action of catalyst, which is one of the important unit reactions in organic synthesis. The existing catalytic hydrogenation reactor usually injects liquid reactants and hydrogen into the reaction box at the same time, and the reactants react with hydrogen under the catalysis of catalyst, but most of the existing reactors do not set stirring device, the contact of hydrogen and reactants is not thorough enough, which leads to a long reaction time and poor reaction effect.

[0003] In view of the above problems, the utility model with publication number CN220824798U discloses a catalytic hydrogenation reactor, the above device passes through air extractor and pressurizes the hydrogen in gas collecting box into gas collecting box and flows out from exhaust pipe, rotates the rotating plate and stirring blade on the rotating shaft through motor, and the hydrogen and liquid are stirred, so that the liquid and hydrogen are mixed more fully, and the reaction effect is improved. However, the hydrogen flows from top to bottom, and since the density of hydrogen is smaller than that of air, the hydrogen is mostly concentrated in the upper part of the reactor, and can only react with the upper surface of the reactants. Even if the liquid is stirred by the stirring blade, most of the positions of the reactants cannot be effectively mixed with hydrogen, and the reaction efficiency is limited. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a catalytic hydrogenation reaction device to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A catalytic hydrogenation reaction device, comprising a reaction tank body and support legs fixedly installed at the bottom of the reaction tank body, the top of the reaction tank body is provided with a liquid inlet, the bottom of the side of the reaction tank body is provided with a liquid outlet, the top of the reaction tank body is provided with four installation grooves in a ring shape, and each installation groove is provided with a catalytic assembly inside. An aeration disc is fixedly installed at the bottom end inside the reaction tank body, the aeration disc is hollow inside and uniformly provided with a plurality of aeration holes at the top end, a partition plate is fixedly installed on the support legs, an air extractor and a gas storage tank are fixedly installed at the upper end of the partition plate, a gas conveying pipe connected to the air inlet end of the air extractor communicates with the gas storage tank, a gas conveying pipe connected to the air outlet end of the air extractor penetrates through the bottom wall of the reaction tank body and communicates with the aeration disc, a circulating pump is fixedly installed on the outer sidewall of the reaction tank body, the input end of the circulating pump is connected to the top end inside the reaction tank body through a gas conveying pipe, the output end of the circulating pump is connected to the gas storage tank through a gas conveying pipe, a stirring motor is fixedly installed at the top end of the reaction tank body, a stirring shaft is rotatably installed inside the reaction tank body, a first stirrer is fixedly installed at the top position of the stirring shaft, and a second stirrer is fixedly installed at the bottom position of the stirring shaft.

[0007] As a further scheme of the utility model: the catalytic assembly includes the hollow catalyst bin and the cover plate fixedly installed at the top end of the catalyst bin, the side wall of the catalyst bin is provided with a strip hole, and the top end of the cover plate is provided with an injection port and a handle.

[0008] As a further scheme of the utility model: the top end of the stirring shaft is rotatably installed on the top wall of the reaction tank body through a bearing, and the stirring shaft penetrates the top wall of the reaction tank body and is fixedly connected with the output shaft of the stirring motor; the bottom end of the stirring shaft is rotatably installed at the top center of the aerator disc.

[0009] As a further scheme of the utility model: the first stirrer is a wing flow stirrer, and the stirring blade thereof is in an oblique angle shape; the second stirrer is a straight-leaf disc radial flow stirrer, and the stirring blade thereof is composed of a disc and six stirring leaves uniformly arranged along the disc.

[0010] As a further scheme of the utility model: the outer surface of the reaction tank body is provided with a control panel, and the exhaust fan, the circulating pump and the stirring motor are electrically connected with the control panel through wires.

[0011] As a further scheme of the utility model: the front surface of the reaction tank body is provided with an observation window.

[0012] As a further scheme of the utility model: the inside of the top wall of the reaction tank body is embedded with an annular iron sheet, the top end of the annular iron sheet is fixedly bonded with an annular rubber sheet, the top of the annular rubber sheet is flush with the top of the reaction tank body, and the bottom of the cover plate of the catalytic assembly is fixedly bonded with a magnetic sheet.

[0013] Compared with the prior art, the utility model has the advantages as follows:

[0014] 1. By setting the catalytic assembly, the solid catalyst is poured into the catalyst bin through the injection port, the strip hole is convenient for the reaction of the reaction liquid and the catalyst, the multiple catalytic assemblies can increase the contact area of the catalyst and the reaction liquid, the reaction efficiency is improved, the catalyst bin can be lifted through the handle, the deactivated catalyst can be replaced, and the use is more convenient and fast.

[0015] 2. The hydrogen in the gas storage tank can be pressed into the aerator disc through the exhaust fan, and enter the inside of the reaction tank body through the aeration hole; the aerator disc arranged at the bottom inside of the reaction tank body can make the hydrogen overflow from bottom to top and react with the reaction liquid, and the contact area of the hydrogen and the reaction liquid is increased. The setting of the circulating pump can transport the hydrogen above the liquid surface of the reaction liquid back to the gas storage tank, and the hydrogen is transported to the aerator disc again through the exhaust fan and then overflow upward, so that the use rate of the hydrogen is further improved, and the hydrogenation reaction efficiency is higher.

[0016] 3. The cover plate of the catalytic assembly is stably adsorbed on the top of the reaction tank body through the annular iron sheet and the magnetic sheet, so that the catalytic assembly is prevented from shaking due to excessive stirring force during the reaction, hydrogen overflow from the cover plate is avoided, the annular rubber sheet can play a sealing role, further avoiding hydrogen overflow, and the hydrogenation reaction effect is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 FIG. 1 is a perspective view of the embodiment 1 of the present application.

[0018] Fig. 2 FIG. 2 is a perspective view of the embodiment 1 of the present application without placing the catalytic assembly.

[0019] Fig. 3 FIG. 3 is a cross-sectional view of the embodiment 1 of the present application.

[0020] Fig. 4 FIG. 4 is a perspective view of the catalytic assembly in the embodiment 1 of the present application.

[0021] Fig. 5 FIG. 5 is a perspective view of the embodiment 2 of the present application.

[0022] Fig. 6 FIG. 6 is a structure view of the annular iron sheet in the embodiment 2 of the present application.

[0023] In the figure, 1 is a reaction tank body, 2 is a supporting leg, 3 is a liquid inlet, 4 is a liquid outlet, 5 is a mounting groove, 6 is a catalytic assembly, 61 is a catalyst bin, 62 is a cover plate, 63 is a strip-shaped hole, 64 is an injection port, 65 is a handle, 7 is an aeration disc, 8 is an aeration hole, 9 is a partition plate, 10 is an air extractor, 11 is a gas storage tank, 12 is a circulating pump, 13 is a stirring motor, 14 is a stirring shaft, 15 is a first stirrer, 16 is a second stirrer, 17 is a control panel, 18 is an observation window, 19 is an annular iron sheet, 20 is an annular rubber sheet, and 21 is a magnetic sheet. DETAILED DESCRIPTION

[0024] The embodiments of the present application will be described in detail below with reference to the accompanying drawings, in which the same or similar parts are denoted by the same reference numerals, and in practical applications, the shape, thickness or height of each component can be enlarged or reduced. The embodiments listed in the present application are only used to illustrate the present application, and are not used to limit the scope of the present application. Any obvious modification or change made to the present application does not deviate from the spirit and scope of the present application.

[0025] Embodiment 1

[0026] Please refer to Figs. 1-4The utility model discloses a catalytic hydrogenation reaction device, including reaction tank body 1 and the bottom fixed mounting of it support leg 2, the top of reaction tank body 1 is equipped with liquid inlet 3, and the bottom of reaction tank body 1 side is equipped with liquid outlet 4, and reaction raw liquid can be injected into reaction tank body 1 via liquid inlet 3, and is discharged by liquid outlet 4 after reaction. The top of reaction tank body 1 is provided with four installation grooves 5 in ring, and each installation groove 5 is provided with catalytic assembly 6 inside. Catalytic assembly 6 includes hollow catalyst bin 61 and the fixed mounting of cover plate 62 at the top of catalyst bin 61, and the periphery lateral wall of catalyst bin 61 is equipped with strip hole 63, and the top of cover plate 62 is equipped with injection port 64 and handle 65. Through injection port 64, solid catalyst can be put into catalyst bin 61, and strip hole 63 can facilitate the reaction of reaction raw liquid and catalyst, and the setting of multiple catalytic assemblies 6 can increase the contact area of catalyst and reaction raw liquid, improve reaction efficiency, and the catalyst bin 61 can be lifted through handle 65, which facilitates the replacement of deactivated catalyst, and is more convenient and fast to use.

[0027] The inside bottom of reaction tank body 1 is fixedly installed with aeration disc 7, the inside of aeration disc 7 is hollow, and a plurality of aeration holes 8 are uniformly arranged at the top of aeration disc 7. The support leg 2 is fixedly installed with a partition plate 9, and the upper end of the partition plate 9 is fixedly installed with an air extractor 10 and a gas storage tank 11. The gas inlet end of the air extractor 10 is connected with the gas storage tank 11 through a gas conveying pipe, and the gas outlet end of the air extractor 10 is connected with the aeration disc 7 through a gas conveying pipe penetrating the bottom wall of the reaction tank body 1. The hydrogen gas in the gas storage tank 11 can be pressed into the aeration disc 7 through the air extractor 10, and then enters the inside of the reaction tank body 1 through the aeration holes 8. The aeration disc 7 is arranged at the bottom of the reaction tank body 1, so that the hydrogen gas can overflow from bottom to top and react with the reaction raw liquid, thereby increasing the contact area of the hydrogen gas and the reaction raw liquid. The outer wall of the reaction tank body 1 is fixedly installed with a circulating pump 12, the input end of the circulating pump 12 is connected to the top of the inside of the reaction tank body 1 through a gas conveying pipe, and the output end of the circulating pump 12 is connected to the gas storage tank 11 through a gas conveying pipe. The hydrogen gas above the liquid level of the reaction raw liquid can be transported back to the gas storage tank 11 through the circulating pump 12, and then transported to the aeration disc 7 again through the air extractor 10 and overflowed upward, thereby further improving the utilization rate of the hydrogen gas and making the hydrogenation reaction more efficient.

[0028] The reaction tank body 1 top end is fixedly installed with a stirring motor 13, a stirring shaft 14 is rotatably installed inside the reaction tank body 1, the stirring shaft 14 top end is rotatably installed with the reaction tank body 1 top wall through a bearing, and the stirring shaft 14 penetrates the reaction tank body 1 top wall and is fixedly connected with the stirring motor 13 output shaft, and the stirring shaft 14 bottom end is rotatably installed on the aeration disc 7 top end center through a bearing. The stirring shaft 14 top position is fixedly installed with a first stirrer 15, the first stirrer 15 is a wing flow stirrer, the stirring blade is in an inclined angle shape, and when the reaction raw liquid is stirred, the reaction raw liquid is conducted vertically along the inclined blade, so that the circulating flowability of the reaction raw liquid in the vertical direction is improved. The stirring shaft 14 bottom position is fixedly installed with a second stirrer 16, the second stirrer 16 is a straight-leaf disc radial flow stirrer, the stirring blade is composed of a disc and six stirring leaves uniformly arranged vertically along the disc, the disc has a certain blocking effect, and the vertical stirring leaf has a strong disturbance shear capacity, and is used for dispersing hydrogen released by the aeration disc 7. The stirring motor 13 is started to drive the stirring shaft 14 to rotate, the stirring shaft 14 drives the first stirrer 15 and the second stirrer 16 to rotate, and the stirring action of the first stirrer 15 and the second stirrer 16 can make the reaction raw liquid and hydrogen fully contact, improve the uniformity of gas-liquid mixing, and at the same time react with the catalyst in the plurality of catalytic assemblies 6, so that the overall reaction is more stable and uniform, and the reaction efficiency is higher.

[0029] The reaction tank body 1 outer surface is provided with a control panel 17, the exhaust fan 10, the circulating pump 12 and the stirring motor 13 are electrically connected with the control panel 17 through wires.

[0030] Example 2

[0031] Please refer to Figs. 5-6 On the basis of example 1, the reaction tank body 1 front surface is provided with an observation window 18, the reaction condition of the reaction liquid and the reaction condition of the catalyst in the reaction tank body 1 can be observed through the observation window 18, so that the catalyst can be replaced in time. The reaction tank body 1 top wall is embedded with an annular iron sheet 19, the annular iron sheet 19 top end is fixedly bonded with an annular rubber sheet 20, the annular rubber sheet 20 top is flush with the reaction tank body 1 top, and the cover plate 62 of the catalytic assembly 6 is fixedly bonded with a magnetic sheet 21 at the bottom. The cover plate 62 of the catalytic assembly 6 is stably adsorbed on the reaction tank body 1 top through the annular iron sheet 19 and the magnetic sheet 21, so that the stirring intensity in the reaction process is avoided to be too large to cause the catalytic assembly 6 to shake, and hydrogen is prevented from overflowing from the cover plate 62, the annular rubber sheet 20 can play a sealing role, and hydrogen is further prevented from overflowing, so that the hydrogenation reaction effect is ensured.

[0032] It is apparent to a person skilled in the art that the present application is not restricted to the details of the foregoing exemplary embodiments, but that it can be implemented in other embodiments without departing from the spirit or essential characteristics of the application. The embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference signs in the claims should be considered as limiting the scope of the claims to the features to which the reference signs are attached.

[0033] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A catalytic hydrogenation reaction apparatus comprising a reaction tank body (1) and a support leg (2) fixedly installed at the bottom of the reaction tank body (1), characterized in that, The top of the reaction tank body (1) is provided with a liquid inlet (3), the bottom of the side of the reaction tank body (1) is provided with a liquid outlet (4), the top of the reaction tank body (1) is provided with four installation grooves (5) in a ring shape, each installation groove (5) is provided with a catalytic assembly (6) inside, the bottom end of the inside of the reaction tank body (1) is fixedly installed with an aeration disc (7), the inside of the aeration disc (7) is hollow and the top end is uniformly provided with a plurality of aeration holes (8), the supporting leg (2) is fixedly installed with a partition plate (9), the upper end of the partition plate (9) is fixedly installed with an air extractor (10) and an air storage tank (11), the air inlet end of the air extractor (10) is communicated with the air storage tank (11) through a gas conveying pipe, the air outlet end of the air extractor (10) is communicated with the aeration disc (7) through a gas conveying pipe and penetrates the bottom wall of the reaction tank body (1), the outside wall of the reaction tank body (1) is fixedly installed with a circulating pump (12), the input end of the circulating pump (12) is communicated with the top end of the inside of the reaction tank body (1) through a gas conveying pipe, the output end of the circulating pump (12) is communicated with the air storage tank (11) through a gas conveying pipe, the top end of the reaction tank body (1) is fixedly installed with a stirring motor (13), the inside of the reaction tank body (1) is rotatably installed with a stirring shaft (14), the top end of the stirring shaft (14) is fixedly installed with a first stirrer (15), the bottom end of the stirring shaft (14) is fixedly installed with a second stirrer (16).

2. The catalytic hydrogenation reactor of claim 1, wherein, The catalytic assembly (6) comprises a hollow catalyst bin (61) and a cover plate (62) fixedly installed at the top end of the catalyst bin (61), the periphery of the catalyst bin (61) is provided with a strip-shaped hole (63), and the top end of the cover plate (62) is provided with an injection port (64) and a handle (65).

3. The catalytic hydrogenation reactor of claim 2, wherein, The top end of the stirring shaft (14) is rotatably installed with the top wall of the reaction tank body (1) through a bearing, and the stirring shaft (14) penetrates the top wall of the reaction tank body (1) and is fixedly connected with the output shaft of the stirring motor (13), and the bottom end of the stirring shaft (14) is rotatably installed at the top end center of the aeration disc (7) through a bearing.

4. The catalytic hydrogenation reactor of claim 3, wherein, The first stirrer (15) is a wing flow stirrer, the stirring blade of which is in an oblique angle shape, and the second stirrer (16) is a straight-leaf disc radial flow stirrer, the stirring blade of which is composed of a disc and six stirring leaves uniformly arranged along the disc.

5. The catalytic hydrogenation reactor of claim 4, wherein, The outside surface of the reaction tank body (1) is provided with a control panel (17), and the air extractor (10), the circulating pump (12) and the stirring motor (13) are electrically connected with the control panel (17) through wires.

6. The catalytic hydrogenation reactor of claim 2, wherein, The front surface of the reaction tank body (1) is provided with an observation window (18).

7. The catalytic hydrogenation reactor of claim 6, wherein, The inside of the top wall of the reaction tank body (1) is embedded with an annular iron sheet (19), the top end of the annular iron sheet (19) is fixedly bonded with an annular rubber sheet (20), the top of the annular rubber sheet (20) is flush with the top of the reaction tank body (1), and the bottom of the cover plate (62) of the catalytic assembly (6) is fixedly bonded with a magnetic sheet (21).

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