Anthraquinone hydrogenation catalyst evaluation device

Abstract

The invention relates to an anthraquinone hydrogenation catalyst evaluation device which comprises a supporting frame and a filler pipe, the filler pipe is located on the supporting frame, the filler pipe is sleeved with a heat preservation pipe, the filler pipe is sequentially filled with a first inert filler, an anthraquinone hydrogenation catalyst and a second inert filler, and the upper end and the lower end of the filler pipe communicate with backflow pipes. The bottom of the filler pipe is communicated with a gas conduit, the orifice of the gas conduit faces the orifice of the return pipe, the bottom of the filler pipe is communicated with a liquid outlet pipe, a liquid outlet valve is mounted on the liquid outlet pipe, and a connecting assembly connected with the support frame is arranged at the bottom of the filler pipe. Hydrogen enters the heat preservation pipe through the gas guide pipe, the hydrogen and working liquid are mixed and pass through the upper end opening of the backflow pipe and then pass through the first inert filler, the anthraquinone hydrogenation catalyst and the second inert filler from top to bottom, working liquid gas-liquid circulation is formed, the gas-liquid mixing effect is good, and the working liquid circulation backflow effect is good; the filler pipe is mounted on the support frame through the connecting assembly, so that the stability of the anthraquinone hydrogenation catalyst evaluation process is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of catalyst evaluation, in particular to an anthraquinone hydrogenation catalyst evaluation device. BACKGROUND

[0002] The principle of the anthraquinone hydrogenation catalyst is mainly based on its catalytic effect in the anthraquinone hydrogenation reaction, which promotes the conversion of anthraquinone to hydroanthraquinone through mechanisms such as reducing the reaction activation energy, promoting hydrogen adsorption and dissociation, stabilizing the reaction intermediates and improving the reaction selectivity.

[0003] The related technology can refer to the Chinese patent with the publication number CN208003919U, which discloses an anthraquinone hydrogenation catalyst evaluation device, which comprises a filler column, a heat preservation jacket, and a reflux pipe. The filler column is internally filled with an anthraquinone hydrogenation catalyst. The filler column has a mesh structure at both ends, and the filler column is connected to an inlet pipe and an outlet pipe at both ends, respectively. A hydrogenation gas pipe is connected to one end of the filler column through the inlet pipe. The reflux pipe is connected to the inlet pipe and the outlet pipe at both ends, respectively. The heat preservation jacket is wrapped on the outer wall of the filler column.

[0004] In view of the related technology in the above, the anthraquinone hydrogenation process is generally used in the current industrial hydrogen peroxide production. The palladium catalyst is the core of this process. In the preparation process of the anthraquinone hydrogenation catalyst evaluation, inert fillers and catalysts need to be added to the filler pipe, and then the reaction is waited. SUMMARY

[0005] In order to improve the stability of the anthraquinone hydrogenation catalyst evaluation process, the application provides an anthraquinone hydrogenation catalyst evaluation device.

[0006] The application provides an anthraquinone hydrogenation catalyst evaluation device, which adopts the following technical scheme:

[0007] An anthraquinone hydrogenation catalyst evaluation device comprises a support frame and a filler pipe. The filler pipe is located on the support frame. A heat preservation pipe is arranged on the outer sleeve of the filler pipe. The filler pipe is sequentially filled with first inert fillers, an anthraquinone hydrogenation catalyst and second inert fillers. A reflux pipe is connected to the upper and lower ends of the filler pipe. A gas guide pipe is connected to the bottom of the filler pipe. The pipe opening of the gas guide pipe faces the pipe opening of the reflux pipe. An outlet pipe is connected to the bottom of the filler pipe. An outlet valve is installed on the outlet pipe. A connecting assembly connected with the support frame is arranged at the bottom of the filler pipe.

[0008] By adopting the technical scheme, the prepared anthraquinone working solution is added to the filler pipe through the top of the filler pipe, hydrogen gas is introduced into the filler pipe through the gas guide pipe, and the working solution is circulated and refluxed automatically between the filler pipe and the reflux pipe by using hydrogen gas as a power source. After the hydrogen gas and the working solution are mixed and pass through the upper end of the reflux pipe, the gas-liquid mixture passes through the first inert filler, the anthraquinone hydrogenation catalyst and the second inert filler from top to bottom, so that the working solution is circulated and refluxed, the gas-liquid mixing effect is good, the working solution circulation reflux effect is good, and the filler pipe is installed on the support frame through the connecting assembly, so that the stability of the anthraquinone hydrogenation catalyst evaluation process is improved.

[0009] Optionally, the support frame comprises a support ring and a plurality of support legs fixed to the bottom of the support ring, and a receiving cup is arranged in the support frame below the support ring.

[0010] By adopting the technical scheme, the support legs support the support frame, and the receiving cup receives the hydrogenated liquid flowing out of the liquid outlet pipe.

[0011] Optionally, the connecting assembly comprises a connecting disc, a through hole is formed in the middle of the connecting disc for the liquid outlet pipe to pass through, the connecting disc is fixedly connected with the filler pipe, a plurality of connecting grooves are formed in the bottom of the connecting disc, moving grooves are formed in the inner walls of the two sides of the connecting grooves, two connecting pieces are arranged in the connecting grooves, limit pieces are arranged on one side of the bottom of the two connecting pieces, moving rods are arranged in the moving grooves on one side of the top of the two connecting pieces away from each other, and the moving rods are slidably connected with the connecting disc.

[0012] By adopting the technical scheme, the connecting disc is placed above the support frame, the two limit pieces are located below the support frame, the position between the two limit pieces is adjusted by moving the moving rods in the moving grooves, the two limit pieces are moved close to each other, and the stability of the connection between the connecting disc and the support frame is improved.

[0013] Optionally, limit grooves are formed in the limit pieces and matched with the support legs.

[0014] By adopting the technical scheme, when the two limit pieces are moved close to each other, the support legs are located in the limit grooves, and the stability of the connection between the connecting disc and the support frame is improved.

[0015] Optionally, a plurality of moving racks are arranged on the moving rods, a plurality of moving gears corresponding to the moving racks are rotatably connected in the connecting disc, and the moving gears are engaged with the moving racks.

[0016] By adopting the technical scheme, the position of the moving rods is adjusted by rotating the moving gears through the moving racks, so that the positions of the connecting pieces and the limit pieces are adjusted.

[0017] Optionally, the connecting disc is rotationally connected with the same number of intermediate gears as the connecting notches, and intermediate rods are arranged at the middle positions of every two movable gears, and the movable gears are meshed with the intermediate racks arranged on the two sides of the intermediate rods, and the intermediate rack on the side of the intermediate rod close to the center of the connecting disc is meshed with the intermediate gear, and the connecting disc is rotationally connected with a rotating ring, and the rotating ring is externally provided with rotating outer gears meshed with the intermediate gears.

[0018] By adopting the above technical scheme, the rotating ring is rotated to drive all the intermediate gears to rotate, the intermediate gears drive the intermediate rods to move during the rotation of the intermediate gears, and the intermediate rods drive the two movable gears to rotate reversely through the intermediate racks on the two sides of the intermediate rods during the movement of the intermediate rods, so that the two movable rods are synchronously close to or away from each other to adjust the positions of the two limiters.

[0019] Optionally, the connecting ring is rotationally connected with a first bevel gear and a second bevel gear, the first bevel gear is connected with a first gear, the rotating ring is internally provided with rotating inner teeth meshed with the first gear, the first bevel gear is meshed with the second bevel gear, the second bevel gear is provided with a second gear, the top end of the connecting ring is provided with a rod slot, the rod slot is provided with a connecting rod, the connecting rod is slidably connected with the connecting disc, and the connecting rod is provided with a connecting rack meshed with the second gear.

[0020] By adopting the above technical scheme, the connecting rod is moved to drive the second gear to rotate through the connecting rack, so that the second bevel gear is rotated to drive the first bevel gear and the first gear to rotate, thereby driving the rotating ring to rotate.

[0021] Optionally, the rod slot is provided with an elastic spring, and the two ends of the elastic spring are connected with the end of the connecting rod and the inner wall of the bottom end of the rod slot.

[0022] By adopting the above technical scheme, when the movable rod is pressed downward, the elastic spring is compressed under force to exert an upward force on the movable rod, and when the movable rod is released, the compressed elastic spring releases the elastic force to push the movable rod to move upward.

[0023] Optionally, the top of the filler pipe is communicated with a reflux condenser pipe.

[0024] By adopting the above technical scheme, the working liquid carried by the airflow is conveniently cooled and recovered through the reflux condenser pipe.

[0025] Optionally, the reflux condenser pipe is sleeved with a cooling pipe.

[0026] By adopting the above technical scheme, the temperature of the reflux condenser pipe is reduced through the cooling pipe, and the cooled working liquid is conveniently recovered.

[0027] To sum up, the present application includes at least one of the following beneficial technical effects:

[0028] 1. By adding the prepared anthraquinone working solution to the filler pipe through the filler pipe top, hydrogen gas is introduced into the filler pipe through the gas guide pipe, and the working solution is automatically circulated between the filler pipe and the reflux pipe by using hydrogen gas as the power source. After the hydrogen gas and the working solution are mixed through the upper port of the reflux pipe, they pass through the first inert filler, the anthraquinone hydrogenation catalyst, and the second inert filler from top to bottom, forming a working solution gas-liquid circulation. The gas-liquid mixing effect is good, the working solution circulation reflux effect is good, and the filler pipe is installed on the support frame through the connecting assembly, thereby improving the stability of the anthraquinone hydrogenation catalyst evaluation process. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 Fig. 1 is a schematic diagram of the overall structure of an anthraquinone hydrogenation catalyst evaluation device.

[0030] Figure 2 Fig. 5 is a schematic diagram of the structure of a support frame in the embodiment of the present application.

[0031] Figure 3 Fig. 8 is a schematic diagram of the connection relationship between the moving rack and the moving gear in the embodiment of the present application.

[0032] BRIEF DESCRIPTION OF DRAWINGS: 1, support frame; 11, support ring; 12, support leg; 2, filler pipe; 21, first inert filler; 22, anthraquinone hydrogenation catalyst; 23, second inert filler; 24, reflux pipe; 25, gas guide pipe; 26, liquid outlet pipe; 27, liquid outlet valve; 3, heat preservation pipe; 31, first circulation pipe; 4, reflux condenser pipe; 5, cooling pipe; 51, second circulation pipe; 6, receiving cup; 7, connecting assembly; 71, connecting disc; 711, through port; 712, connecting notch; 713, moving groove; 72, connecting piece; 73, limiting piece; 74, moving rod; 741, moving rack; 75, first bevel gear; 751, first gear; 76, second bevel gear; 761, second gear; 77, connecting rod; 771, connecting rack; 772, elastic spring; 78, intermediate gear; 79, rotating ring; 8, moving gear; 9, intermediate rod; 91, intermediate rack. DETAILED DESCRIPTION

[0033] The present application will be further described in detail below in conjunction with all the drawings.

[0034] The embodiment of the present application discloses an anthraquinone hydrogenation catalyst evaluation device.

[0035] REFERENCE Figure 1The utility model provides an anthraquinone hydrogenation catalyst evaluation device, including support frame 1 and filler pipe 2, filler pipe 2 is located on support frame 1, and the outer sleeve of filler pipe 2 is equipped with heat preservation pipe 3, and the upper and lower ends of heat preservation pipe 3 are all communicated with first circulating pipe 31, and the first circulating pipe 31 is connected with constant temperature heating equipment, and the constant temperature heating equipment includes conveying pump and the constant temperature of heating medium, makes the heating medium continuously flow in heat preservation pipe 3, keeps the temperature of anthraquinone hydrogenation catalyst 22 evaluation process in filler pipe 2 suitable temperature, improves the stability of evaluation experiment.

[0036] Refer to Figure 1 And Figure 2 , filler pipe 2 is filled with first inert filler 21, anthraquinone hydrogenation catalyst 22 and second inert filler 23 in proper order, and the first inert material and the second inert material can be glass material, and the upper and lower ends of filler pipe 2 are communicated with reflux pipe 24, and the bottom of filler pipe 2 is communicated with gas guide pipe 25, and the nozzle of gas guide pipe 25 faces the nozzle of reflux pipe 24, and the prepared anthraquinone working solution is added to filler pipe 2 through the top of filler pipe 2, hydrogen gas enters filler pipe 2 through gas guide pipe 25, and hydrogen gas is the power source to make the working solution realize automatic reflux circulation between filler pipe and reflux pipe 24, and after hydrogen gas and working solution are mixed and pass through the upper end of reflux pipe 24, they pass through first inert filler 21, anthraquinone hydrogenation catalyst 22 and second inert filler 23 from top to bottom, forming working solution gas-liquid circulation, and the gas-liquid mixing effect is good, and the working solution reflux circulation effect is good.

[0037] Refer to Figure 1 And Figure 2 , the top of filler pipe 2 is communicated with reflux condenser tube 4, the outer sleeve of reflux condenser tube 4 is equipped with cooling pipe 5, and the upper and lower sides of cooling pipe 5 are both communicated with second circulating pipe 51, cooling medium is conveyed into cooling pipe 5 through second circulating pipe 51, the temperature of reflux condenser tube 4 is reduced, and the working solution entrained by gas flow is conveniently cooled and recovered.

[0038] Refer to Figure 2 , the bottom of filler pipe 2 is communicated with liquid outlet pipe 26, the liquid outlet valve 27 is installed on liquid outlet pipe 26, the support frame 1 includes support ring 11 and a plurality of support legs 12 fixed at the bottom of support ring 11, the support legs 12 support the support frame 1, and the support frame 1 is provided with receiving cup 6 located below the support ring 11, the hydrogenated liquid flowing out of liquid outlet pipe 26 is received by receiving cup 6 by opening the liquid outlet valve 27.

[0039] Refer to Figure 2 And Figure 3The bottom of the filler pipe 2 is provided with a connecting assembly 7 connected with the support frame 1. The connecting assembly 7 comprises a connecting disc 71, the connecting disc 71 is provided with a through hole 711 for the outlet pipe 26 to pass through, the connecting disc 71 is fixedly connected with the filler pipe 2, a plurality of connecting grooves 712 are formed in the bottom of the connecting disc 71, the inner walls of the two sides of the connecting grooves 712 are provided with moving grooves 713, two connecting pieces 72 are arranged in the connecting grooves 712, the bottom of the two connecting pieces 72 is provided with a limiting piece 73 on one side close to each other, the top of the two connecting pieces 72 is provided with a moving rod 74 in the moving groove 713 on one side away from each other, and the moving rod 74 is slidably connected with the connecting disc 71. The connecting disc 71 is placed above the support frame 1, the two limiting pieces 73 are located below the support frame 1, the position between the two limiting pieces 73 is adjusted by moving the moving rod 74 in the moving groove 713, the two limiting pieces 73 are close to each other, and the stability of the connection between the connecting disc 71 and the support frame 1 is improved.

[0040] The limiting piece 73 is provided with a limiting groove matched with the supporting leg 12. When the two limiting pieces 73 are close to each other, the supporting leg 12 is located in the limiting groove, and the stability of the connection between the connecting disc 71 and the support frame 1 is improved.

[0041] The connecting ring is rotatably connected with a first bevel gear 75 and a second bevel gear 76, the first bevel gear 75 is coaxially connected with a first gear 751, the first bevel gear 75 is engaged with the second bevel gear 76, the second bevel gear 76 is coaxially connected with a second gear 761, a rod groove is formed in the top end of the connecting ring, a connecting rod 77 is movably connected in the rod groove, the connecting rod 77 is slidably connected with the connecting disc 71, the connecting rod 77 is provided with a connecting rack 771 engaged with the second gear 761, an elastic spring 772 is arranged in the rod groove, the two ends of the elastic spring 772 are connected with the end of the connecting rod 77 and the inner wall of the bottom end of the rod groove, the connecting disc 71 is rotatably connected with the same number of intermediate gears 78 as the connecting grooves 712, the connecting disc 71 is rotatably connected with a rotating ring 79, the rotating ring 79 is provided with a plurality of rotating outer teeth engaged with the intermediate gears 78, the rotating ring 79 is provided with rotating inner teeth engaged with the first gear 751, a plurality of moving rods 74 are provided with moving racks 741, the connecting disc 71 is rotatably connected with a plurality of moving gears 8 corresponding to the moving racks 741, the moving gears 8 are engaged with the moving racks 741, intermediate rods 9 are arranged at the middle positions of every two moving gears 8, the intermediate rods 9 are provided with intermediate racks 91 engaged with the moving gears 8 on both sides, and the intermediate rack 91 close to the center of the connecting disc 71 is engaged with the intermediate gear 78.

[0042] When the connecting disc 71 needs to be connected with the support frame 1 or separated from the support frame 1, the connecting rod 77 is pressed downward, the connecting rod 77 moves downward, the elastic spring 772 is compressed to generate an upward elastic force, the second gear 761 and the second bevel gear 76 are driven to rotate, the first bevel gear 75 and the first gear 751 are driven to rotate, the first gear 751 drives the rotating ring 79 to rotate, the rotating ring 79 drives all the intermediate gears 78 to rotate in the rotating process, so that the intermediate rod 9 moves, drives the moving gears 8 on both sides of the intermediate rod 9 to rotate, drives the two moving rods 74 to move away from each other, so that the two limiting pieces 73 move away from each other, after the connecting disc 71 is connected with the support frame 1 or separated from the support frame 1, the connecting rod 77 is released, the elastic spring 772 which is compressed releases the elastic force and pushes the connecting rod 77 to move upward, so that the two limiting pieces 73 move close to each other to reset.

[0043] The implementation principle of the anthraquinone hydrogenation catalyst evaluation device is: the prepared anthraquinone working solution is added to the top of the filler pipe 2, hydrogen gas is introduced into the filler pipe 2 through the gas guide pipe 25, the working solution is automatically circulated between the filler pipe and the reflux pipe 24 by using hydrogen gas as a power source, hydrogen gas and the working solution are mixed and pass through the first inert filler 21, the anthraquinone hydrogenation catalyst 22 and the second inert filler 23 from top to bottom through the upper port of the reflux pipe 24, the working solution gas-liquid circulation is formed, the gas-liquid mixing effect is good, the working solution circulation reflux effect is good, the liquid outlet valve 27 is opened, and the receiving cup 6 receives the hydrogenated liquid flowing out of the liquid outlet pipe 26.

[0044] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, therefore: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. An anthraquinone hydrogenation catalyst evaluation device, comprising a support frame (1) and a stuffing tube (2), wherein the stuffing tube (2) is located on the support frame (1), and is characterized in that: The stuffing tube (2) is provided with an insulation tube (3) on its outer sleeve. The stuffing tube (2) is sequentially filled with a first inert filler (21), an anthraquinone hydrogenation catalyst (22) and a second inert filler (23). The upper and lower ends of the stuffing tube (2) are connected to a reflux pipe (24). The bottom of the stuffing tube (2) is connected to a gas conduit (25), the pipe mouth of the gas conduit (25) faces the pipe mouth of the reflux pipe (24). The bottom of the stuffing tube (2) is connected to a liquid outlet pipe (26), and a liquid outlet valve (27) is installed on the liquid outlet pipe (26). The bottom of the stuffing tube (2) is provided with a connecting assembly (7) connected to the support frame (1).

2. The anthraquinone hydrogenation catalyst evaluation device according to claim 1, characterized in that: The support frame (1) comprises a support ring (11) and a plurality of support legs (12) fixed to the bottom of the support ring (11); a receiving cup (6) located below the support ring (11) is provided in the support frame (1).

3. The anthraquinone hydrogenation catalyst evaluation device according to claim 2, characterized in that: The connecting assembly (7) comprises a connecting disk (71), a through hole (711) for a liquid outlet pipe (26) to pass through is provided in the middle of the connecting disk (71), the connecting disk (71) is fixedly connected to the filling pipe (2), a plurality of connecting notches (712) are provided at the bottom of the connecting disk (71), movable grooves (713) are provided on the inner walls on both sides of the connecting notches (712), two connecting members (72) are provided in the connecting notches (712), a limiting member (73) is provided on the side where the bottoms of the two connecting members (72) are close to each other, and a movable rod (74) located in the movable groove (713) is provided on the side where the tops of the two connecting members (72) are away from each other, and the movable rod (74) is slidably connected to the connecting disk (71).

4. The anthraquinone hydrogenation catalyst evaluation device according to claim 3, characterized in that: The limiting member (73) is provided with a limiting groove that matches the supporting leg (12).

5. The anthraquinone hydrogenation catalyst evaluation device according to claim 3, characterized in that: A plurality of movable racks (741) are provided on the movable rods (74), and a plurality of movable gears (8) corresponding to the movable racks (741) are rotatably connected in the connecting disk (71), and the movable gears (8) are meshed with the movable racks (741).

6. The anthraquinone hydrogenation catalyst evaluation device according to claim 5, characterized in that: The connecting disk (71) is rotatably connected to an intermediate gear (78) having the same number as the connecting notches (712). An intermediate rod (9) is provided between each two movable gears (8). Intermediate racks (91) meshing with the movable gears (8) are provided on both sides of the intermediate rod (9). The intermediate rack (91) on the side of the intermediate rod (9) close to the center of the connecting disk (71) meshes with the intermediate gear (78). A rotating ring (79) is rotatably connected to the connecting disk (71). A plurality of rotating external teeth meshing with the intermediate gears (78) are provided on the outside of the rotating ring (79).

7. The anthraquinone hydrogenation catalyst evaluation device according to claim 6, characterized in that: A first bevel gear (75) and a second bevel gear (76) are rotatably connected in the connecting ring, a first gear (751) is connected to the first bevel gear (75), a rotating internal tooth meshing with the first gear (751) is provided in the rotating ring (79), the first bevel gear (75) is meshed with the second bevel gear (76), a second gear (761) is provided on the second bevel gear (76), a rod groove is provided at the top of the connecting ring, a connecting rod (77) is provided in the rod groove, the connecting rod (77) is slidably connected to the connecting disk (71), and a connecting rack (771) meshing with the second gear (761) is provided on the connecting rod (77).

8. The anthraquinone hydrogenation catalyst evaluation device according to claim 7, characterized in that: An elastic spring (772) is provided in the rod groove, and both ends of the elastic spring (772) are connected to the end of the connecting rod (77) and the inner wall of the bottom end of the rod groove.

9. The anthraquinone hydrogenation catalyst evaluation device according to claim 1, characterized in that: The top of the filling tube (2) is connected to a reflux condenser (4).

10. The anthraquinone hydrogenation catalyst evaluation device according to claim 9, characterized in that: The reflux condenser (4) is provided with a cooling tube (5) on its outer shell.

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