An anthraquinone hydrogen peroxide hydrogenation tower for protecting catalysts

Abstract

The present invention relates to the field of hydrogen peroxide production equipment, and particularly to an anthraquinone process hydrogen peroxide hydrogenation tower for protecting catalysts. The present invention provides such an anthraquinone process hydrogen peroxide hydrogenation tower for protecting catalysts, which includes an infusion assembly, a partition isolation mechanism, etc.; the infusion assembly is connected to the partition isolation mechanism. In the anthraquinone process hydrogen peroxide hydrogenation tower for protecting catalysts of the present invention, during the catalytic hydrogenation reaction of the entire processing liquid, the partition isolation mechanism sequentially separates the catalysts in the filter disc into partitions. The separated catalysts are inside the partition isolation mechanism, and the partition isolation mechanism individually performs an anti-adsorption treatment on them, realizing the catalytic hydrogenation reaction of the catalysts with the processing liquid and hydrogen. The anti-adsorption treatment work of the catalysts can be carried out synchronously. It solves the technical problem that in the catalyst maintenance treatment step, the entire hydrogenation tower needs to be shut down, and multiple cumbersome treatment steps are required to perform the anti-adsorption treatment on the catalysts, which affects the efficiency of the entire hydrogen peroxide production work.

Description

Technical Field

[0001] The present invention relates to the field of hydrogen peroxide production equipment, and particularly to an anthraquinone method hydrogen peroxide hydrogenation tower for protecting catalysts. Background Art

[0002] In the process of producing hydrogen peroxide by the anthraquinone method, a filter disk filled with palladium catalytic catalyst is provided in the hydrogenation tower. An anthraquinone treatment liquid and hydrogen are injected into the filter disk, and a catalytic hydrogenation reaction is quickly carried out under the catalysis of the catalyst to synthesize an intermediate product for producing hydrogen peroxide. If the toxic substances contained in the treatment liquid are not completely purified, after the catalyst undergoes a long-term catalytic hydrogenation reaction, the catalyst in the hydrogenation reactor is prone to poisoning, reducing the activity of the catalyst or even losing its activity. Therefore, in order to reduce the degree of catalyst poisoning and ensure that the catalyst can have a long service life, it is necessary to regularly maintain the catalyst.

[0003] However, in the existing steps for maintaining the catalyst in the hydrogenation reactor, it is necessary to first shut down the entire hydrogenation tower, stop the catalytic hydrogenation reaction processing of the treatment liquid, then take out the catalyst from the filter disk, use an anti-adsorption liquid to reversely adsorb the harmful substances in the catalyst, then screen out the small-volume catalyst fragments damaged in the catalyst, and finally refill the catalyst that has completed the anti-adsorption treatment back into the hydrogenation reactor. The entire treatment step is cumbersome, resulting in limited progress of the hydrogenation processing of the treatment liquid and ultimately affecting the efficiency of the entire hydrogen peroxide production work. Summary of the Invention

[0004] In order to overcome the disadvantages that in the steps of maintaining the catalyst in the hydrogenation reactor, it is necessary to shut down the entire hydrogenation tower and perform multiple cumbersome treatment steps to perform anti-adsorption treatment on the catalyst, which affects the efficiency of the entire hydrogen peroxide production work, the present invention provides an anthraquinone method hydrogen peroxide hydrogenation tower for protecting catalysts.

[0005] An anthraquinone method hydrogen peroxide hydrogenation tower for protecting catalysts described herein includes a tower body, a middle part of the tower, a tray, an inner cylinder, an inner ring slider, an infusion assembly, a partition isolation mechanism, a jet assembly, and a rotation assembly; the area of the tower body located above the middle part of the tower is the treatment liquid inlet area; the area of the tower body located below the middle part of the tower is the treatment liquid collection area; a tray is fixedly connected inside the middle part of the tower; a plurality of sieve holes are opened at the bottom of the tray; an inner cylinder is rotatably connected inside the tray; the tray and the inner cylinder together form a complete filter disk; an inner ring slider is slidably connected above the middle part of the tower; an infusion assembly is connected to the upper side of the inner cylinder; the infusion assembly is connected to the middle part of the tower; a partition isolation mechanism is connected to the right side of the filter disk, and the partition isolation mechanism performs anti-adsorption treatment work on the catalyst in the filter disk in a partitioned manner; the partition isolation mechanism is connected to the infusion assembly above; the partition isolation mechanism is connected to the middle part of the tower; a jet assembly is connected inside the infusion assembly; the jet assembly is connected to the middle part of the tower; a rotation assembly for driving the inner cylinder to rotate is connected below the middle part of the tower.

[0006] Preferably, the infusion assembly includes a liquid leakage tray, an annular liquid collecting pipe, a funnel, a third annular slider, and a liquid guiding pipe;

[0007] A liquid leakage tray is fixedly connected to the upper side of the inner cylinder; the liquid leakage tray is slidably connected to the tower; an annular liquid collecting pipe is fixedly connected to the upper side of the liquid leakage tray; a plurality of spray pipes are connected to the lower side of the annular liquid collecting pipe; the spray pipes are connected to the liquid leakage tray; a funnel is fixedly connected to the upper side of the tower; a third annular slider is slidably connected to the lower side of the funnel; a plurality of liquid guiding pipes connecting the funnel are fixedly connected around the third annular slider; each liquid guiding pipe is connected to the annular liquid collecting pipe; the liquid leakage tray, the funnel, and the third annular slider are all connected to the air jet assembly; the funnel and the third annular slider are both connected to the partition isolation mechanism.

[0008] Preferably, the partition isolation mechanism includes a frame body, a filter pipe, a first annular pipe, a first annular slider, a waste liquid pipe, a lifting partition plate, and a stirring infusion assembly;

[0009] A frame body is fixedly connected between the tray and the right side of the inner cylinder; a filter pipe is connected to the lower side of the frame body; the filter pipe penetrates through the inner cylinder; a first annular pipe is fixedly connected to the inner lower side of the inner cylinder; the filter pipe is connected to the first annular pipe; a first annular slider is slidably connected to the lower side of the first annular pipe; a waste liquid pipe is fixedly connected to the lower side of the tower; the upper end of the waste liquid pipe penetrates through the first annular slider and is connected to the first annular pipe; a lifting partition plate is slidably connected to each of the front side and the rear side of the frame body; a stirring infusion assembly is connected between the two lifting partition plates; the stirring infusion assembly is connected to the frame body; the funnel and the third annular slider are both connected to the stirring infusion assembly; the stirring infusion assembly is connected to the tower.

[0010] Preferably, at least one layer of filter screen is fixedly connected to the end of the filter pipe close to the frame body.

[0011] Preferably, the stirring infusion assembly includes a first motor, a lead screw, a fixing plate, an upper turntable, a first toothed ring, a lower turntable, a liquid spraying rod, a liquid distribution pipe, a second motor, a first straight gear, a second annular pipe, a second annular slider, a liquid inlet pipe, and an infusion pipe;

[0012] A first motor is fixedly connected to the upper side of the frame body; a lead screw is rotatably connected to the upper side of the frame body; the output shaft of the first motor drives the lead screw to rotate; a fixed plate is fixedly connected between the two lifting partition plates; the fixed plate is connected to the lead screw; the middle part of the fixed plate is rotatably connected with an upper turntable; a first toothed ring is fixedly connected to the upper side of the upper turntable; a lower turntable is rotatably connected to the upper side of the frame body; a plurality of liquid spraying rods are fixedly connected through the upper turntable; a liquid distribution pipe is commonly connected between the upper ends of all the liquid spraying rods; the lower ends of all the liquid spraying rods are slidably connected to the lower turntable; a second motor is fixedly connected to the rear part of the upper side of the frame body; a first straight gear is fixedly connected to the output shaft of the second motor; the first straight gear meshes with the first toothed ring; a second annular pipe is fixedly connected to the outer surface of the funnel; a second annular slider is fixedly connected to the outer surface of the third annular slider; the second annular slider is slidably connected to the second annular pipe; a liquid inlet pipe is connected to the left side of the second annular pipe; the left end of the liquid inlet pipe is fixedly connected to the middle of the tower; a liquid infusion pipe connecting the second annular pipe is fixedly connected to the right side of the second annular slider; the right end of the liquid infusion pipe is connected to the liquid distribution pipe.

[0013] Preferably, both the annular liquid collecting pipe and the annular gas collecting pipe are arranged as annular structures with non-closed ends near the partition isolation mechanism.

[0014] Preferably, the air jetting assembly includes an annular gas collecting pipe, a third annular pipe, an air inlet pipe, an air delivery pipe and an air jetting pipe.

[0015] An annular gas collecting pipe is fixedly connected to the upper side of the liquid leakage tray; a third annular pipe is fixedly connected to the lower side of the third annular slider; an air inlet pipe is connected to the middle of the third annular pipe; the lower end of the air inlet pipe is fixedly connected to the middle of the tower; an air delivery pipe is connected to the left side of the third annular pipe; the air delivery pipe is connected to the annular gas collecting pipe; a plurality of air jetting pipes are connected to the lower side of the annular gas collecting pipe in a surrounding manner; all the air jetting pipes are connected to the liquid leakage tray.

[0016] Preferably, a bottom plug for diverting gas to the surroundings is fixedly connected to the lower end of each air jetting pipe.

[0017] Preferably, a plurality of spiral flow guiding groove structures are formed on the upper surface surrounding each bottom plug.

[0018] Preferably, the rotating assembly includes a fixed frame, a motor, a second straight gear and a second toothed ring; a fixed frame is fixedly connected to the lower side of the middle of the tower.

[0019] A motor is fixedly connected to the left side of the fixed frame; a second straight gear is fixedly connected to the output shaft of the motor; a second toothed ring is fixedly connected inside the inner cylinder; the second straight gear meshes with the second toothed ring.

[0020] The beneficial effects of the present invention are as follows: In the middle of the tower body of a hydrogenation tower for anthraquinone hydrogen peroxide that protects the catalyst of the present invention, a filter disk is provided. A liquid infusion component is connected to the filter disk, and a jet component is connected inside the liquid infusion component. A partition isolation mechanism is connected to the right side of the filter disk. The filter disk is filled with the catalyst. At the same time, the treatment liquid entering the tower body passes through the liquid infusion component and is evenly distributed into the filter disk, allowing the treatment liquid to uniformly seep through the catalyst from top to bottom. At the same time, the jet component uniformly mixes hydrogen with the treatment liquid in the liquid infusion component, enabling the treatment liquid and hydrogen to fully react in the catalyst. During the catalytic hydrogenation reaction of the entire treatment liquid, the partition isolation mechanism sequentially separates the catalyst in the filter disk into partitions. The isolated catalyst is inside the partition isolation mechanism, and the partition isolation mechanism separately performs an anti-adsorption treatment on it, realizing the catalytic hydrogenation reaction of the catalyst with the treatment liquid and hydrogen, and the anti-adsorption treatment work on the catalyst alone can be carried out synchronously. When regularly maintaining the catalyst, while ensuring that the catalyst can have a long service life, it also ensures that the catalytic reaction treatment work on the treatment liquid and hydrogen can be continuously carried out, improving the processing efficiency of the treatment liquid;

[0021] It solves the technical problem that during the maintenance process of the catalyst in the hydrogenation reactor, the entire hydrogenation tower needs to be shut down, and a number of cumbersome treatment steps are required to perform an anti-adsorption treatment on the catalyst, which affects the efficiency of the entire hydrogen peroxide production work. Description of the Drawings

[0022] Figure 1 Schematic three-dimensional structure diagram of the present application described according to the embodiment;

[0023] Figure 2 Schematic cross-sectional view in the middle of the tower of the present application described according to the embodiment;

[0024] Figure 3 Schematic three-dimensional internal structure diagram in the middle of the tower of the present application described according to the embodiment;

[0025] Figure 4 Schematic three-dimensional structure diagram of the liquid infusion component and the jet component of the present application described according to the embodiment;

[0026] Figure 5 Schematic three-dimensional structure diagram of the liquid infusion component and the filter disk of the present application described according to the embodiment;

[0027] Figure 6 Schematic three-dimensional structure diagram of the filter disk of the present application described according to the embodiment;

[0028] Figure 7 Schematic cross-sectional view of the filter disk of the present application described according to the embodiment;

[0029] Figure 8 Schematic exploded view of the filter disk of the present application described according to the embodiment;

[0030] Figure 9 Schematic diagram of the first partial three-dimensional structure of the partition isolation mechanism of the present application according to an embodiment;

[0031] Figure 10 Schematic diagram of the second partial three-dimensional structure of the partition isolation mechanism of the present application according to an embodiment;

[0032] Figure 11 Schematic diagram of the third partial three-dimensional structure of the partition isolation mechanism of the present application according to an embodiment;

[0033] Figure 12 Schematic diagram of the three-dimensional structure of the jet component of the present application according to an embodiment;

[0034] Figure 13 Schematic diagram of the partial three-dimensional structure of the jet component of the present application according to an embodiment.

[0035] Explanation of reference numerals: 1 - tower body, 11 - middle of the tower, 21 - tray, 211 - sieve holes, 22 - inner cylinder, 221 - inner ring slider, 31 - frame, 32 - filter pipe, 33 - first annular pipe, 34 - first annular slider, 35 - waste liquid pipe, 36 - lifting partition board, 41 - first motor, 42 - lead screw, 43 - fixing plate, 44 - upper turntable, 441 - first toothed ring, 45 - lower turntable, 46 - liquid spraying rod, 47 - liquid distribution pipe, 48 - second motor, 49 - first straight gear, 410 - second annular pipe, 411 - second annular slider, 412 - liquid inlet pipe, 413 - infusion pipe, 51 - liquid leakage tray, 52 - annular liquid collecting pipe, 521 - spraying pipe, 53 - funnel, 54 - third annular slider, 55 - liquid guiding pipe, 61 - annular gas collecting pipe, 62 - third annular pipe, 63 - gas inlet pipe, 64 - gas transmission pipe, 65 - gas spraying pipe, 66 - bottom plug, 661 - diversion groove, 71 - fixing frame, 72 - motor, 73 - second straight gear, 74 - second toothed ring. Detailed implementation manners

[0036] The present invention will be further described below in conjunction with the accompanying drawings and detailed implementation manners.

[0037] Embodiment

[0038] An anthraquinone process hydrogen peroxide hydrogenation tower for protecting a catalyst, as Figures 1 - 13As shown in the figure, it includes a tower body 1, a middle part of the tower 11, a tray 21, an inner cylinder 22, an inner ring slider 221, an infusion component, a partition isolation mechanism, a jet component, and a rotating component; the area of the tower body 1 above the middle part of the tower 11 is the processing liquid inlet area; the area of the tower body 1 below the middle part of the tower 11 is the processing liquid collection area; the tray 21 is bolted inside the middle part of the tower 11; several sieve holes 211 are opened at the bottom of the tray 21; the inner cylinder 22 is rotatably connected inside the tray 21; the inner ring slider 221 is slidably connected above the middle part of the tower 11; the upper side of the inner cylinder 22 is connected to the infusion component; the infusion component is connected to the middle part of the tower 11; the upper side of the partition isolation mechanism is connected to the infusion component; the partition isolation mechanism is connected to the middle part of the tower 11; the jet component is connected inside the infusion component; the jet component is connected to the middle part of the tower 11; the lower side of the middle part of the tower 11 is connected to the rotating component; the rotating component is connected to the inner cylinder 22.

[0039] As Figure 3 , Figure 4 and Figure 12 shown in the figure, the infusion component includes a liquid leakage tray 51, an annular liquid collecting pipe 52, a funnel 53, a third annular slider 54, and a liquid guiding pipe 55; the liquid leakage tray 51 is bolted to the upper side of the inner cylinder 22; the liquid leakage tray 51 is slidably connected to the middle part of the tower 11; the annular liquid collecting pipe 52 is fixedly connected to the upper side of the liquid leakage tray 51; several spray pipes 521 are connected to the lower side of the annular liquid collecting pipe 52; the spray pipes 521 are connected to the liquid leakage tray 51; the funnel 53 is bolted to the upper side of the middle part of the tower 11; the third annular slider 54 is slidably connected to the lower side of the funnel 53; several liquid guiding pipes 55 connected to the funnel 53 are fixedly connected around the third annular slider 54; each liquid guiding pipe 55 is connected to the annular liquid collecting pipe 52; the liquid leakage tray 51, the funnel 53, and the third annular slider 54 are all connected to the jet component; the funnel 53 and the third annular slider 54 are both connected to the partition isolation mechanism.

[0040] As Figure 7 and Figures 9 - 11As shown in the figure, the partition isolation mechanism includes a housing 31, a filter pipe 32, a first annular pipe 33, a first annular slider 34, a waste liquid pipe 35, a lifting partition 36, and a stirring and infusion assembly; a housing 31 is bolted between the right side of the tray 21 and the inner cylinder 22; a filter pipe 32 is connected to the lower side of the housing 31; at least one layer of filter screen is fixedly connected to one end of the filter pipe 32 close to the housing 31; the filter pipe 32 penetrates through the inner cylinder 22; a first annular pipe 33 is bolted to the lower inner side of the inner cylinder 22; the filter pipe 32 is connected to the first annular pipe 33; a first annular slider 34 is slidably connected to the lower side of the first annular pipe 33; a waste liquid pipe 35 is fixedly connected to the lower side of the tower middle 11; the upper end of the waste liquid pipe 35 penetrates through the first annular slider 34 and is connected to the first annular pipe 33; a lifting partition 36 is slidably connected to each of the front and rear sides of the housing 31; a stirring and infusion assembly is connected between the two lifting partitions 36; the stirring and infusion assembly is connected to the housing 31; the funnel 53 and the third annular slider 54 are both connected to the stirring and infusion assembly; the stirring and infusion assembly is connected to the tower middle 11.

[0041] As Figure 4 and Figure 11 shown in the figure, the stirring and infusion assembly includes a first motor 41, a lead screw 42, a fixing plate 43, an upper turntable 44, a first toothed ring 441, a lower turntable 45, a liquid spraying rod 46, a liquid distribution pipe 47, a second motor 48, a first straight gear 49, a second annular pipe 410, a second annular slider 411, a liquid inlet pipe 412, and an infusion pipe 413; a first motor 41 is bolted to the upper side of the housing 31; a lead screw 42 is rotatably connected to the upper side of the housing 31; the output shaft of the first motor 41 drives the lead screw 42 to rotate; a fixing plate 43 is bolted between the two lifting partitions 36; the fixing plate 43 is connected to the lead screw 42; the middle of the fixing plate 43 is rotatably connected to an upper turntable 44; a first toothed ring 441 is bolted to the upper side of the upper turntable 44; a lower turntable 45 is rotatably connected to the upper side of the housing 31; a plurality of liquid spraying rods 46 are fixedly connected through the upper turntable 44; a liquid distribution pipe 47 is commonly connected between the upper ends of all the liquid spraying rods 46; the lower ends of all the liquid spraying rods 46 are slidably connected to the lower turntable 45; a second motor 48 is bolted to the rear part of the upper side of the housing 31; a first straight gear 49 is fixedly connected to the output shaft of the second motor 48; the first straight gear 49 meshes with the first toothed ring 441; a second annular pipe 410 is fixedly connected to the outer surface of the funnel 53; a second annular slider 411 is fixedly connected to the outer surface of the third annular slider 54; the second annular slider 411 is slidably connected to the second annular pipe 410; a liquid inlet pipe 412 is connected to the left side of the second annular pipe 410; the left end of the liquid inlet pipe 412 is fixedly connected to the tower middle 11; an infusion pipe 413 is fixedly connected to the right side of the second annular slider 411 and is connected to the second annular pipe 410; the right end of the infusion pipe 413 is connected to the liquid distribution pipe 47.

[0042] As Figure 5As shown, both the annular liquid collecting pipe 52 and the annular gas collecting pipe 61 are arranged as annular structures with one end close to the partition isolation mechanism being non-closed.

[0043] As Figure 4 , Figure 12 and Figure 13 shown, the jet component includes an annular gas collecting pipe 61, a third annular pipe 62, an air inlet pipe 63, a gas transmission pipe 64 and a jet pipe 65; the annular gas collecting pipe 61 is fixedly connected to the upper side of the liquid leakage tray 51; the third annular slider 54 is fixedly connected to the lower side of the third annular pipe 62; the middle of the third annular pipe 62 is connected to the air inlet pipe 63; the lower end of the air inlet pipe 63 is fixedly connected to the tower middle 11; the left side of the third annular pipe 62 is connected to the gas transmission pipe 64; the gas transmission pipe 64 is connected to the annular gas collecting pipe 61; several jet pipes 65 are connected to the lower side of the annular gas collecting pipe 61 in a surrounding manner; the jet pipes 65 are all connected to the liquid leakage tray 51; a bottom plug 66 is fixedly connected to the lower end of each jet pipe 65; several spiral flow guiding grooves 661 structures are respectively formed on the upper surface surrounding each bottom plug 66.

[0044] As Figure 2 and Figure 6 shown, the rotating component includes a fixed frame 71, a motor 72, a second straight gear 73 and a second toothed ring 74; the fixed frame 71 is bolted to the lower side of the tower middle 11; the motor 72 is bolted to the left side of the fixed frame 71; the output shaft of the motor 72 is fixedly connected to the second straight gear 73; the second toothed ring 74 is bolted inside the inner cylinder 22; the second straight gear 73 meshes with the second toothed ring 74.

[0045] The catalytic hydrogenation reaction of the anthraquinone process hydrogen peroxide hydrogenation tower for protecting the catalyst works as follows:

[0046] The tray 21 and the inner cylinder 22 together form a complete filter disc, and the filter disc is filled with the catalyst. The filling height of the catalyst is lower than the lifting partition plate 36. The processing liquid enters the processing liquid inlet area of the tower body 1 above the tower middle 11. The processing liquid in the processing liquid inlet area passes through the funnel 53 and enters the annular liquid collecting pipe 52 along each liquid guiding pipe 55, and then is sprayed into the liquid leakage tray 51 from each spraying pipe 521. The processing liquid uniformly flows downward from the liquid leakage tray 51 into the catalyst, and seeps through the catalyst from top to bottom. During this process, the external hydrogen delivery device delivers hydrogen into the third annular pipe 62 through the air inlet pipe 63. The hydrogen enters the annular gas collecting pipe 61 through the gas transmission pipe 64, and is respectively sprayed downward from each jet pipe 65, so that the hydrogen is fully mixed with the processing liquid in the liquid leakage tray 51. The mixed hydrogen and the processing liquid continuously undergo catalytic hydrogenation reaction by the catalyst during the process of seeping downward through the catalyst. Finally, the processing liquid after the catalytic hydrogenation reaction is completed passes through the sieve holes 211 and enters the processing liquid collection area of the tower body 1 below the tower middle 11.

[0047] During the process of hydrogen gas spraying downward from the spray pipe 65, the hydrogen gas spirally disperses around the diversion groove 661 of the bottom plug 66 in the downward direction along the spray pipe 65, enhancing the mixing effect of the hydrogen gas and the treatment liquid in the liquid leakage tray 51, and improving the catalytic hydrogenation reaction efficiency of the hydrogen gas and the treatment liquid in the later stage.

[0048] The catalyst maintenance work of the anthraquinone process hydrogen peroxide hydrogenation tower for protecting the catalyst:

[0049] During the process of the catalytic hydrogenation reaction processing in which hydrogen gas continuously penetrates through the catalyst along with the treatment liquid, the output shaft of the motor 72 drives the second spur gear 73 to rotate intermittently. The second spur gear 73 meshes with the second toothed ring 74 to drive the inner cylinder 22 and its connected partition isolation mechanism to rotate intermittently around the axis of the funnel 53, so that the frame body 31 sequentially passes through each area of the tray 21. Under the control of the stirring and liquid delivery assembly, every time the frame body 31 passes through an area, the frame body 31 performs partition maintenance work on the catalyst in this area.

[0050] In the steps of the frame body 31 performing partition maintenance work, first, the output shaft of the first motor 41 drives the lead screw 42 to rotate. The rotating lead screw 42 drives the fixed plate 43 and the two lifting partition plates 36 connected thereto to move downward, so that the two lifting partition plates 36 form a closed maintenance space with the frame body 31, and the catalyst in the area of the tray 21 where the frame body 31 is located is separately isolated in this maintenance space. At the same time, the fixed plate 43 drives the upper turntable 44, the first toothed ring 441, the lower turntable 45, the liquid spraying rod 46, the liquid distribution pipe 47, the second motor 48 and the first spur gear 49 to move downward synchronously, so that the liquid spraying rods 46 all extend into the maintenance space.

[0051] Then, the externally connected anti-adsorption liquid delivery device conveys the anti-adsorption liquid to the second annular pipeline 410 through the liquid inlet pipe 412. The anti-adsorption liquid successively enters each liquid spraying rod 46 through the liquid delivery pipe 413 and the liquid distribution pipe 47. The liquid spraying rod 46 sprays the anti-adsorption liquid onto the catalyst in the maintenance space. At the same time, the output shaft of the second motor 48 drives the first spur gear 49 to rotate. The first spur gear 49 meshes with the first toothed ring 441 to drive the upper turntable 44 to rotate. The upper turntable 44 drives the liquid spraying rod 46 and the lower turntable 45 to rotate slowly. The rotating liquid spraying rod 46 stirs the catalyst in the maintenance space, realizing the anti-adsorption treatment work on the harmful substances adsorbed on the catalyst in the maintenance space. The anti-adsorption liquid is discharged into the first annular pipeline 33 through the filter pipe 32 and discharged from the tower 11 along the waste liquid pipe 35.

[0052] During the period when the liquid spraying rod 46 stirs the catalyst in the maintenance space, the small-sized broken catalyst fragments in the maintenance space follow the flowing anti-adsorption liquid, pass through the filter screen of the filter pipe 32 and are discharged along the waste liquid pipe 35, ending the maintenance work on the catalyst.

[0053] Through the above processing steps, the catalytic hydrogenation reaction of the catalyst for the treatment liquid and hydrogen can be realized, which can be synchronized with the anti-adsorption treatment work of the catalyst alone. When the catalyst is regularly maintained, while ensuring that the catalyst has a long service life, it also ensures that the catalytic reaction treatment work of the treatment liquid and hydrogen can be continuously carried out, improving the processing efficiency of the treatment liquid.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. An anthraquinone hydrogen peroxide hydrogenation tower for protecting a catalyst, comprising a tower body (1), a middle part of the tower (11) and a tray (21); The area of the tower body (1) above the tower middle (11) is the processing liquid inlet area; the area of the tower body (1) below the tower middle (11) is the processing liquid collection area; a tray (21) is fixedly connected inside the tower middle (11); it is characterized in that: It further comprises an inner cylinder (22), an inner ring slider (221), an infusion assembly, a partition isolation mechanism, a jet assembly and a rotating assembly; A plurality of sieve holes (211) are formed in the bottom of the tray (21); an inner cylinder (22) is rotatably connected inside the tray (21); the tray (21) and the inner cylinder (22) together form a complete filter disc; an inner ring slider (221) is slidably connected to the upper side of the middle part of the tower (11); the upper side of the inner cylinder (22) is connected with an infusion assembly; the infusion assembly is connected to the middle part of the tower (11); the right side of the filter disc is connected with a partition isolation mechanism, and the partition isolation mechanism performs an anti-adsorption treatment work on the catalyst in the filter disc in a partitioned manner; the upper side of the partition isolation mechanism is connected with the infusion assembly; The partition isolation mechanism is connected to the middle part of the tower (11); a jet assembly is connected inside the infusion assembly; the jet assembly is connected to the middle part of the tower (11); the lower side of the middle part of the tower (11) is connected with a rotating assembly for driving the inner cylinder (22) to rotate; The infusion assembly comprises a liquid leakage disc (51), an annular liquid collecting pipe (52), a funnel (53), a third annular slider (54) and a liquid guiding pipe (55); The liquid leakage disc (51) is fixedly connected to the upper side of the inner cylinder (22); the liquid leakage disc (51) is slidably connected to the middle part of the tower (11); the annular liquid collecting pipe (52) is fixedly connected to the upper side of the liquid leakage disc (51); a plurality of spray pipes (521) are connected to the lower side of the annular liquid collecting pipe (52) in a surrounding manner; the spray pipes (521) are connected to the liquid leakage disc (51); the funnel (53) is fixedly connected to the upper side of the middle part of the tower (11); the third annular slider (54) is slidably connected to the lower side of the funnel (53); a plurality of liquid guiding pipes (55) connected to the funnel (53) are fixedly connected in a surrounding manner to the third annular slider (54); each liquid guiding pipe (55) is connected to the annular liquid collecting pipe (52); the liquid leakage disc (51), the funnel (53) and the third annular slider (54) are all connected to the jet assembly; the funnel (53) and the third annular slider (54) are both connected to the partition isolation mechanism; The partition isolation mechanism comprises a frame body (31), a filter pipe (32), a first annular pipe (33), a first annular slider (34), a waste liquid pipe (35), a lifting partition plate (36) and a stirring infusion assembly; A frame body (31) is fixedly connected between the right sides of the tray (21) and the inner cylinder (22); the filter pipe (32) is connected to the lower side of the frame body (31); the filter pipe (32) penetrates through the inner cylinder (22); the first annular pipe (33) is fixedly connected to the inner lower side of the inner cylinder (22); the filter pipe (32) is connected to the first annular pipe (33); the first annular slider (34) is slidably connected to the lower side of the first annular pipe (33); the waste liquid pipe (35) is fixedly connected to the lower side of the middle part of the tower (11); The upper end of the waste liquid pipe (35) penetrates through the first annular slider (34) and is connected to the first annular pipe (33); a lifting partition plate (36) is slidably connected to each of the front side and the rear side of the frame body (31); a stirring and liquid infusion assembly is connected between the two lifting partition plates (36); the stirring and liquid infusion assembly is connected to the frame body (31); the funnel (53) and the third annular slider (54) are both connected to the stirring and liquid infusion assembly; the stirring and liquid infusion assembly is connected to the middle part of the tower (11).

2. The anthraquinone process hydrogen peroxide hydrogenation tower for protecting a catalyst according to claim 1, wherein At least one layer of filter screen is fixedly connected to one end of the filter pipe (32) close to the frame body (31).

3. A hydrogenation tower for anthraquinone process hydrogen peroxide to protect the catalyst according to claim 1, characterized in that, The stirring and liquid infusion assembly includes a first motor (41), a lead screw (42), a fixing plate (43), an upper turntable (44), a first toothed ring (441), a lower turntable (45), a liquid spraying rod (46), a liquid distribution pipe (47), a second motor (48), a first straight gear (49), a second annular pipe (410), a second annular slider (411), a liquid inlet pipe (412) and a liquid infusion pipe (413); The first motor (41) is fixedly connected to the upper side of the frame body (31); the lead screw (42) is rotatably connected to the upper side of the frame body (31); the output shaft of the first motor (41) drives the lead screw (42) to rotate; the fixing plate (43) is fixedly connected between the two lifting partition plates (36); the fixing plate (43) is connected to the lead screw (42); the middle part of the fixing plate (43) is rotatably connected to the upper turntable (44); the first toothed ring (441) is fixedly connected to the upper side of the upper turntable (44); the lower turntable (45) is rotatably connected to the upper side of the frame body (31); a plurality of liquid spraying rods (46) are fixedly connected through the upper turntable (44); a liquid distribution pipe (47) is commonly connected between the upper ends of all the liquid spraying rods (46); the lower ends of all the liquid spraying rods (46) are slidably connected to the lower turntable (45); the second motor (48) is fixedly connected to the rear part of the upper side of the frame body (31); the output shaft of the second motor (48) is fixedly connected to the first straight gear (49); the first straight gear (49) meshes with the first toothed ring (441); the second annular pipe (410) is fixedly connected to the outer surface of the funnel (53); the second annular slider (411) is fixedly connected to the outer surface of the third annular slider (54); the second annular slider (411) is slidably connected to the second annular pipe (410); the left side of the second annular pipe (410) is connected to the liquid inlet pipe (412); the left end of the liquid inlet pipe (412) is fixedly connected to the middle part of the tower (11); The right side of the second annular slider (411) is fixedly connected to the liquid infusion pipe (413) which is connected to the second annular pipe (410); The right end of the liquid infusion pipe (413) is connected to the liquid distribution pipe (47).

4. A hydrogenation tower for anthraquinone process hydrogen peroxide for protecting a catalyst according to claim 3, characterized in that, Both the annular liquid collecting pipe (52) and the annular gas collecting pipe (61) are arranged as annular structures with non-closed ends at the ends close to the partition isolation mechanism.

5. A hydrogenation tower for anthraquinone process hydrogen peroxide for protecting a catalyst according to claim 1, characterized in that, The air jetting assembly includes an annular gas collecting pipe (61), a third annular pipe (62), an air inlet pipe (63), an air delivery pipe (64) and an air jetting pipe (65); An annular gas collecting pipe (61) is fixedly connected to the upper side of the liquid leakage tray (51); a third annular pipe (62) is fixedly connected to the lower side of the third annular slider (54); an air inlet pipe (63) is connected to the middle of the third annular pipe (62); the lower end of the air inlet pipe (63) is fixedly connected to the middle of the tower (11); a gas transmission pipe (64) is connected to the left side of the third annular pipe (62); the gas transmission pipe (64) is connected to the annular gas collecting pipe (61); a plurality of gas jet pipes (65) are connected to the lower side of the annular gas collecting pipe (61) in a surrounding manner; the gas jet pipes (65) are all connected to the liquid leakage tray (51).

6. The anthraquinone hydrogen peroxide hydrogenation tower for protecting the catalyst according to claim 5, characterized in that, A bottom plug (66) for guiding gas to all around is fixedly connected to the lower end of each gas jet pipe (65).

7. A hydrogenation tower for anthraquinone process hydrogen peroxide for protecting a catalyst according to claim 6, characterized in that, A plurality of spiral flow guiding grooves (661) are formed on the upper surface surrounding each bottom plug (66).

8. The anthraquinone process hydrogen peroxide hydrogenation tower for protecting a catalyst according to claim 1, characterized in that The rotating assembly includes a fixed frame (71), a motor (72), a second straight gear (73) and a second toothed ring (74). A fixed frame (71) is fixedly connected to the lower side of the middle of the tower (11); a motor (72) is fixedly connected to the left side of the fixed frame (71); a second straight gear (73) is fixedly connected to the output shaft of the motor (72); a second toothed ring (74) is fixedly connected to the inside of the inner cylinder (22); the second straight gear (73) is meshed with the second toothed ring (74).

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