CN114392582A - P-xylene adsorption type separation device - Google Patents

Abstract

The invention discloses a paraxylene adsorption type separation device which comprises a front treatment device, wherein one end of the front treatment device is communicated with a tank body, the tank body is provided with a driving assembly, and a mixing separation assembly is arranged in the tank body. According to the invention, by arranging the mixing and separating component, the inner cylinder is matched with the outer cylinder, when the adsorbent is added, the adsorbent is quickly mixed with the raw material by using centrifugal force, the adsorption efficiency of the adsorbent is accelerated, the adsorbent is separated from the raw material adsorbed with the paraxylene by using centrifugal force, the adsorbent is attached to the inner wall of the outer cylinder, the raw material adsorbed with the paraxylene is extruded out of the inner cylinder, then the adsorbent flows out from one end of the outer cylinder far away from the accommodating tank, and the raw material adsorbed with the paraxylene flows back along the guide plate, so that the mixing and adsorption process can be accelerated, the separation of the adsorbent can be quickly completed, and the purpose of continuous production can be realized.

Description

P-xylene adsorption type separation device

Technical Field

The invention relates to the technical field of organic chemical equipment, in particular to a paraxylene adsorption type separation device.

Background

Para-xylene (PX) is an important basic organic chemical raw material, generally used for producing Purified Terephthalic Acid (PTA) or purified dimethyl terephthalate (DMT), and is mainly obtained by obtaining a C8 aromatic hydrocarbon mixture through an aromatic hydrocarbon combination unit and separating PX from 4 isomers thereof. The C8 arene is mainly from reformed oil, ethylene cracking by-product gasoline, coal tar, toluene disproportionation and transalkylation oil, or light hydrocarbon aromatization gasoline, except for high PX content in the toluene selective disproportionation process, xylene isomers from different sources are close to thermodynamic equilibrium, and because 4 isomers of C8 arene have very similar physical properties except for freezing point, the xylene isomers are difficult to separate by adopting a common rectification method.

Chinese patent publication No. CN111804009A discloses a para-xylene adsorption separation apparatus, which comprises a plurality of placing plates for placing adsorbing materials, and the raw materials flow through the placing plates to be adsorbed and separated from the para-xylene. To this end, we propose a para-xylene adsorption type separation apparatus to solve the above problems.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides a paraxylene adsorption type separation device.

In order to achieve the purpose, the invention adopts the following technical scheme:

the paraxylene adsorption type separation device comprises a front-channel treatment device and is characterized in that one end of the front-channel treatment device is communicated with a tank body, the tank body is provided with a driving assembly, a mixing and separating assembly is arranged in the tank body, the side wall of the tank body is communicated with a conveying pipe, a pressure pump is arranged on the conveying pipe, and one end, far away from the tank body, of the conveying pipe is communicated with an adsorption and desorption tank;

mix the separable set including with jar internal wall fixed connection's support frame, it is connected with urceolus and inner tube to rotate on the support frame, urceolus and the coaxial setting of inner tube, urceolus and inner tube all are connected the setting with the drive assembly transmission, fixedly connected with guide plate in the urceolus, and the outer wall counterbalance setting of guide plate and inner tube, a plurality of drainage plates that encircle the setting of inner wall fixedly connected with of inner tube, the internal wall fixedly connected with holding tank of the jar body, and the lower extreme of urceolus is located the holding tank and sets up.

Preferably, the inner tube includes the barrel, the inner wall sliding connection that the barrel is close to the retaining ring has the collection shell, collect the first otter board of fixedly connected with in the shell, and collect the shell sliding connection has the second otter board, the one side of collecting the shell and keeping away from first otter board is provided with the third otter board, the retaining ring is close to the one end fixedly connected with circle cover of collecting the shell, two crisscross helicla flutes that set up are seted up to the circle cover outer wall, the inner wall rotation that the collection shell is close to the helicla flute is connected with the pivot, the lateral wall fixedly connected with guide block of pivot, and the both ends of guide block all are provided with three hornblocks, the lateral wall of pivot is fixedly connected with guide bar still, and the spout has been seted up to the lateral wall of guide bar, the lateral wall fixedly connected with of second otter board matches with the slider with spout.

Preferably, drive assembly includes driving motor, driving motor's output runs through the lateral wall setting of the jar body, driving motor output end fixedly connected with bull stick, and bull stick and inner tube fixed connection, the outer wall fixedly connected with of inner tube encircles the latch that sets up, and the lateral wall of support frame rotates and is connected with the gear train with latch meshing, the inner wall fixedly connected with of urceolus and gear train meshing internal gear.

Preferably, the lower end of the inner cylinder is provided with a through hole which is arranged in a surrounding manner, a filtering membrane is arranged in the through hole, and the inner wall of the inner cylinder, which is close to the backflow plate, is fixedly connected with an annular breast board.

Preferably, still be communicated with the reposition of redundant personnel pipeline on the conveyer pipe, be provided with the solenoid valve on the reposition of redundant personnel pipeline, inhale the quantity of separating the jar and shunt the quantity phase-match of pipeline.

Preferably, the gear train includes the driven gear with latch meshing's drive gear and with internal gear meshing, drive gear and driven gear all rotate with the support frame and are connected the setting, the lateral wall fixedly connected with of drive gear and driven gear meshing's change gear.

Preferably, the parcel has the guard shield on the backward flow board, and the cross section of backward flow board is the arc, the one end fixedly connected with apron of jar body is kept away from to the backward flow board.

Preferably, the guide plate and the drainage plate are both spiral, and the pitch of the guide plate is smaller than that of the drainage plate.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the mixing and separating component is arranged, the inner cylinder is matched with the outer cylinder, when the adsorbent is added, the adsorbent is quickly mixed with the raw material by using centrifugal force, the adsorption efficiency of the adsorbent is accelerated, the adsorbent is separated from the raw material adsorbed with paraxylene by using centrifugal force, the adsorbent is attached to the inner wall of the outer cylinder, the raw material adsorbed with paraxylene is extruded out of the inner cylinder, then the adsorbent flows out from one end of the outer cylinder far away from the accommodating tank, and the adsorbed paraxylene raw material flows back along the guide plate, so that the mixing and adsorption process can be accelerated, the separation of the adsorbent can be quickly completed, the purpose of continuous production can be realized, and a single set of equipment can efficiently and continuously carry out separation production operation of paraxylene;

2. according to the invention, by arranging the driving component, the mixing and separating component can be driven to operate by using the driving motor, and a certain rotation speed difference exists between the inner cylinder and the outer cylinder, so that convection is formed in the process of mixing the raw material and the adsorbent, the high-efficiency mixing of the adsorbent and the raw material is realized, the raw material adsorption effect of the adsorbent is further ensured, and the extraction rate of the mixing and separating component is improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a paraxylene adsorption separation device according to the present invention;

FIG. 2 is a schematic diagram of the internal structure of a paraxylene adsorption separation device according to the present invention;

FIG. 3 is a schematic structural diagram of a mixed separation component of a paraxylene adsorption separation device according to the present invention;

FIG. 4 is a schematic view of a partial structure of a paraxylene adsorption separation apparatus according to the present invention;

FIG. 5 is a schematic view of a portion of a para-xylene adsorptive separation unit according to the present invention;

FIG. 6 is a schematic cross-sectional structural view of a structure of a mixed separation assembly in a paraxylene adsorption separation device according to the present invention;

FIG. 7 is a schematic structural diagram of a driving assembly of a paraxylene adsorption separation device according to the present invention;

FIG. 8 is an enlarged view of the structure at A in FIG. 7;

FIG. 9 is a schematic diagram of the inner cylinder structure of a paraxylene adsorption separation device according to the present invention;

FIG. 10 is a schematic view of a collecting shell structure of a paraxylene adsorption separation device according to the present invention;

FIG. 11 is an enlarged view of the structure at B in FIG. 9;

FIG. 12 is an enlarged view of the structure of FIG. 10 at C;

FIG. 13 is a schematic structural diagram of a reflux plate of a paraxylene adsorption separation device according to the present invention.

In the figure: 1. a preceding processing device; 2. a tank body; 3. a through hole; 4. a drive assembly; 41. a drive motor; 42. a rotating rod; 43. clamping teeth; 44. an internal gear; 45. a drive gear; 46. a driven gear; 47. a speed change gear; 5. a delivery pipe; 6. a pressure pump; 7. an adsorption tank; 8. a support frame; 9. an inner barrel; 91. a barrel; 92. collecting the shells; 93. a first screen plate; 94. a second screen plate; 95. a chute; 96. a third screen plate; 97. a round sleeve; 98. a helical groove; 99. a rotating shaft; 910. a guide block; 911. a triangular block; 912. a slider; 10. an outer cylinder; 11. a baffle; 12. a drainage plate; 13. accommodating grooves; 14. a retainer ring; 15. a connecting rod; 16. a feed tube; 17. a return plate; 18. an annular breast plate; 19. a diversion pipeline; 20. an electromagnetic valve; 21. a shield; 22. and (7) a cover plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-13, a paraxylene adsorption separation device comprises a front processing device 1, wherein the front processing device 1 comprises a disproportionation device, an isomerization device and a xylene rectification device, so as to extract a C8 aromatic hydrocarbon mixture, and according to the production process, the content of C9+ aromatic hydrocarbon in the C8 aromatic hydrocarbon mixture is not more than 500 mg/kg, so as to ensure the purity of the subsequent paraxylene finished product, one end of the front processing device 1 is communicated with a tank body 2, the tank body 2 is provided with a driving component 4, a mixing and separating component is arranged in the tank body 2, the side wall of the tank body 2 is communicated with a delivery pipe 5, a pressure pump 6 is arranged on the delivery pipe 5, and one end of the delivery pipe 5, which is far away from the tank body 2, is communicated with an adsorption tank 7.

Wherein, the mixing and separating component comprises a supporting frame 8 fixedly connected with the inner wall of the tank body 2, an outer cylinder 10 and an inner cylinder 9 are rotatably connected on the supporting frame 8, the outer cylinder 10 and the inner cylinder 9 are coaxially arranged, the outer cylinder 10 and the inner cylinder 9 are both in transmission connection with the driving component 4, a guide plate 11 is fixedly connected in the outer cylinder 10, the guide plate 11 is abutted against the outer wall of the inner cylinder 9, the guide plate 11 is matched with the rotating outer cylinder 10 to form the effect of spiral feeding to drive the raw materials in the holding tank 13 to flow upwards and is mixed with the absorbent in the inner cylinder 9 in the flowing process, a plurality of circumferentially arranged drainage plates 12 are fixedly connected with the inner wall of the inner cylinder 9, the holding tank 13 is fixedly connected with the inner wall of the tank body 2, the lower end of the outer cylinder 10 is positioned in the holding tank 13, one end of the inner cylinder 9 close to the holding tank 13 is rotatably connected with a check ring 14, the liquid level of the C8 aromatic mixture in the holding tank 13 is lower than the horizontal level of the check ring 14, a raw materials backward flow after being used for avoiding the direct interfusion holding tank 13 of adsorbent for avoiding the adsorbent, lead to C8 aromatic hydrocarbon mixture in the holding tank 13 to mix and the layering with the adsorbent, lead to holding tank 13 bottom deposit adsorbent, connecting rod 15 and jar body 2's inner wall fixed connection is passed through to retaining ring 14's lateral wall, connecting rod 15's lateral wall still fixedly connected with is used for adding the adsorbent filling tube 16, and the lower extreme opening of filling tube 16 is located the inner wall setting of inner tube 9, the inner wall fixedly connected with slope of jar body 2 returns flow plate 17, and the one end of returning flow plate 17 inserts the setting of inner tube 9, it is used for guiding jar body 2, and the raw materials backward flow after adsorbing the paraxylene, and return flow plate 17 does not contact with the inner wall of inner tube 9, jar body 2 keeps away from holding tank 13's lateral wall and conveyer pipe 5 intercommunication setting.

Further, the inner cylinder 9 includes a cylinder 91, the inner wall of the cylinder 91 close to the retainer ring 14 is slidably connected with a collecting shell 92, the inner of the collecting shell 92 is fixedly connected with a first mesh plate 93, the inner of the collecting shell 92 is slidably connected with a second mesh plate 94, meshes of the first mesh plate 93 and the second mesh plate 94 correspond to each other, when the first mesh plate 93 and the second mesh plate 94 are aligned, a mixture of the adsorbent and the raw material can pass through the first mesh plate 93 and the second mesh plate 94, and when the first mesh plate 93 and the second mesh plate 94 are staggered, the mixture of the adsorbent and the raw material cannot pass through, the mesh of the third mesh plate 96 is smaller than the meshes of the first mesh plate 93 and the second mesh plate 94, one side of the collecting shell 92 far away from the first mesh plate 93 is provided with a third mesh plate 96, one end of the retainer ring 14 close to the collecting shell 92 is fixedly connected with a round sleeve 97, the outer wall of the round sleeve 97 is provided with two staggered spiral grooves 98, the pattern of the spiral grooves 98 is similar to the down screw, the staggered part of the spiral groove 98 is provided with an extra space for facilitating the rotation of the guide block 910, when the guide block 910 rotates along the inner wall of the spiral groove 98, the guide block 910 is also subjected to the reaction force of the inner wall of the spiral groove 98, at the staggered part of the spiral groove 98, the guide block 910 rotates under the drive of the reaction force of the inner wall of the spiral groove 98, so that the direction of the guide block 910 changes, and thus one spiral groove 98 slides into the other spiral groove 98, and finally the collection shell 92 is driven to reciprocate, the inner wall of the collection shell 92 close to the spiral groove 98 is rotatably connected with a rotating shaft 99, the side wall of the rotating shaft 99 is fixedly connected with the guide block 910, the two ends of the guide block 910 are respectively provided with a triangular block 911, the side wall of the rotating shaft 99 is also fixedly connected with a guide rod, the side wall of the guide rod is provided with a sliding groove 95, the side wall of the second mesh plate 94 is fixedly connected with a sliding block 912 matched with the sliding groove 95, in the design, because the raw material still contains a certain amount of impurities, at the position where the collecting shell 92 is arranged, the position where the adsorbent contacts the raw material is exactly the contact position of the adsorbent, the collecting shell 92 is arranged to be matched with the first screen plate 93 and the second screen plate 94, the collecting shell 92 can be driven to reciprocate by the circular sleeve 97 matched with the staggered spiral groove 98, when the collecting shell 92 moves towards the retainer ring 14, the rotating shaft 99 is driven to rotate by the guide block 910, and the sliding groove 95 matched with the sliding block 912 is used to drive the second screen plate 94 to move, so that the meshes of the first screen plate 93 and the second screen plate 94 correspond to each other, and after the adsorbent contacts the raw material, the impurities which are easily adsorbed by the adsorbent can form larger particles and are blocked by the third screen plate 96, and are collected into the collecting shell 92, so that the impurities adsorbed by the adsorbent have small influence on the adsorption and separation of xylene, and can be separated in the subsequent adsorption and desorption purification process, on the other hand, when the collecting shell 92 moves away from the retainer ring 14, the rotating shaft 99 rotates under the driving of the guide block 910 again, and the sliding block 912 drives the second mesh plate 94 to move, so that the meshes of the first mesh plate 93 and the second mesh plate 94 are staggered, and the impurities in the collecting shell 92 are prevented from flowing out, while on one hand, when the collecting shell 92 moves towards the holding tank 13, the collecting effect can be improved by using the reaction force of the collecting shell 92 and the solvent, on the other hand, because the adsorbent and the raw material need a certain time to be mixed, when the collecting shell 92 moves away from the retainer ring 14, the space and the time for mixing the raw material and the adsorbent can be given, so that the raw material and the adsorbent have a longer mixing time between the collecting shell 92 and the retainer ring 14, the adsorbent can fully adsorb the impurities, and the larger particles and impurities are prevented from flowing into the subsequent process, while the excess adsorbent moves synchronously with the raw material in the direction of the drive assembly 4.

Further, the driving assembly 4 includes a driving motor 41, an output end of the driving motor 41 penetrates through a side wall of the tank body 2, the driving motor 41 is used for driving the inner cylinder 9 and the outer cylinder 10 to rotate, a servo motor with a gearbox is adopted to provide high torque to facilitate a user to control the rotating speed, so that the requirement of the production process is met, an output end of the driving motor 41 penetrates through the support frame 8 and is fixedly connected with a rotating rod 42, a middle position of the rotating rod 42 is fixedly connected with the output end of the driving motor 41, two ends of the rotating rod 42 are fixedly connected with the inner cylinder 9, an outer wall of the inner cylinder 9 is fixedly connected with a circumferentially arranged latch 43, a gear set meshed with the latch 43 is rotatably connected with a side wall of the support frame 8, an inner gear 44 meshed with the gear set is fixedly connected with an inner wall of the outer cylinder 10, and the gear set is used for ensuring that the rotating directions of the inner cylinder 9 and the outer cylinder 10 are the same and the rotating speeds are different while being driven, this kind of design, when utilizing driving motor 41 to drive inner tube 9 and urceolus 10 pivoted, make and to make inner tube 9 and urceolus 10 have certain rotational speed difference, and then in raw materials and adsorbent mixing process, the adsorbent with inflow inner tube 9 has higher initial velocity, and then the velocity of flow is slower along the ascending raw materials of urceolus 10, and then form the speed difference, and when the miscella continued to flow upwards, because inner tube 9 and urceolus 10's rotational speed difference can also possess certain stirring effect, realize the high-efficient mixing of adsorbent and raw materials, and then guarantee the raw materials adsorption effect of adsorbent, improve mixed separating element's extraction rate.

Further, the lower end of the inner cylinder 9 is provided with a through hole 3 which is arranged in a surrounding manner, a filtering membrane is arranged in part of the through hole 3, an inner wall of the inner cylinder 9, which is close to the reflux plate 17, is fixedly connected with an annular baffle plate 18, the adsorbent flows towards the outer cylinder 10 along the through hole 3 after entering the inner cylinder 9 through a charging pipe 16, and the adsorbent is mixed with the raw material, after being melted into the paraxylene, the density of the adsorbent is increased, the raw material which is adsorbed with the paraxylene is extruded to flow upwards along the through hole 3, and finally the raw material which is adsorbed with the paraxylene is made to flow back along a guide plate 11, wherein the filtering membrane is arranged in the through hole 3 which is used for the raw material which is adsorbed with the paraxylene to flow back into the inner cylinder 9, at the position, the liquid level in a liquid level high accommodating groove 13 in the outer cylinder 10 is formed by the filtering membrane and the inner cylinder 9, a wrapping environment which is close to the wall is formed by the filtering membrane and the inner cylinder 9, so as to ensure that the solution in the inner cylinder 9 can flow upwards in a reverse direction, and the solvent blocking the backflow in the inner cylinder 9 drives the adsorbent to enter the inner cylinder 9 again, the adsorbent flows downwards along the outer cylinder 10 and flows to the adsorption and desorption equipment through the conveying pipe 5, the annular baffle is used for blocking the raw material adsorbing the paraxylene from being mixed with the adsorbent again at the upper end of the inner cylinder 9 on one hand, and is also used for improving the liquid level of the inner cylinder 9 close to the annular baffle on the other hand, so that the raw material adsorbing the paraxylene can flow back conveniently.

Furthermore, the delivery pipe 5 is also communicated with a shunt pipeline 19, the shunt pipeline 19 is provided with an electromagnetic valve 20, the number of the adsorption tanks 7 is matched with the shunt number of the shunt pipeline 19, and in terms of the prior art, before the invention of continuously produced adsorption and desorption equipment (in the prior art, para-diethylbenzene is used as a desorption agent to adsorb para-xylene in the adsorbent), a plurality of equipment only having the adsorption and desorption function can be designed to process the adsorbent and the solvent of para-xylene, so as to realize the matching in efficiency.

Further, the gear train includes drive gear 45 and driven gear 46 with internal gear 44 meshing with latch 43 meshing, drive gear 45 and driven gear 46 all rotate with support frame 8 and are connected the setting, the lateral wall fixedly connected with of drive gear 45 has speed change gear 47 with driven gear 46 meshing, wherein speed change gear 47's external diameter and number of teeth all are greater than drive gear 45, and the lateral wall of inner tube 9 has seted up annular groove of stepping down and is used for avoiding interfering with speed change gear 47, this kind of design is used for realizing the differential rotation of inner tube 9 and urceolus 10, on the other hand, because need not to adjust to the difference in rotational speed of inner tube 9 and urceolus 10, so adopt simpler gear drive mechanism, if follow-up production technology changes, also can use instead and have the gear train of adjusting the drive ratio.

Further, the parcel has guard shield 21 on the board 17 that flows back, and the cross section of board 17 that flows back is the arc, and the one end fixedly connected with apron 22 of jar body 2 is kept away from to the board 17 that flows back, on the one hand, is used for preventing partial mixed liquid from dripping to flowing back on the board 17 from top to bottom and getting rid of through setting up guard shield 21, and on the other hand, through setting up apron 22, keeps away from the direction extension of holding tank 13 forward, improves the safeguard effect.

Further, guide plate 11 and drainage plate 12 are the heliciform, and the pitch of guide plate 11 is less than the pitch of drainage plate 12, and wherein guide plate 11 is single, utilizes guide plate 11 cooperation pivoted urceolus 10 to drive the raw materials slope upward flow, and drainage plate 12 is then a plurality ofly, drives adsorbent and upwards gushes after mixing with the adsorbent the raw materials that are adsorbed paraxylene upwards flow.

In the invention, when a user carries out the production of the paraxylene adsorption process, the disproportionation, isomerization and rectification of raw materials are firstly completed by utilizing the front processing equipment 1 to obtain a C8 aromatic hydrocarbon mixture needing to be adsorbed and separated, then the adsorption process is utilized to separate paraxylene from m-xylene, o-xylene and ethylbenzene in the C8 aromatic hydrocarbon mixture, wherein the C8 aromatic hydrocarbon mixture is used as the raw material to be injected into the holding tank 13, an adsorbent is injected into the inner barrel 9 through the charging pipe 16, after the user starts the driving component 4, the driving motor 41 and the matching rotating rod 42 drive the inner barrel 9 to rotate, then the inner barrel 9 drives the sinking component to rotate by utilizing the latch 43, at the moment, the outer barrel 10 also rotates synchronously along with the inner barrel 9, wherein the rotation directions of the inner barrel 9 and the outer barrel 10 are the same, the rotation of the outer barrel 10 is greater than the rotation speed of the inner barrel 9, at the moment, the outer barrel 10 drives the guide plate 11 to drive the raw materials in the holding tank 13 to flow upwards in the rotation process, the adsorbent in the inner cylinder 9 flows into the inner cylinder 9 after passing through the retaining ring 14 and moves along with the inner cylinder 9, wherein the adsorbent in the inner cylinder 9 can synchronously flow with the inner cylinder 9 and pass through the through hole 3 to be mixed with the raw material in the outer cylinder 10 under the action of centrifugal force, at the moment, the adsorbent can adsorb paraxylene in the raw material in the mixing process, then the outer cylinder 10 is matched with the guide plate 11 to drive the mixed solution to flow upwards, the solution in the inner cylinder 9 flows upwards under the matching of the inner cylinder 9 and the drainage plate 12, on the other hand, after the adsorbent adsorbs paraxylene, the density of the adsorbent rises at the moment, under the action of the centrifugal force, the adsorbent and the raw material adsorbed paraxylene are layered, the specific expression of the adsorbent is similar to the solid-liquid separation mode of a horizontal screw centrifuge, and is realized by the centrifugal force generated by the matching rotation of density difference, in the separation device, the whole inner cylinder is not fully distributed with the solvent and the adsorbent, the gravity is matched to realize separation, the requirement on the rotating speed is reduced, then the adsorbent continuously flows upwards along the inner wall of the outer cylinder 10 until the adsorbent is separated from the outer cylinder 10 and flows out along the conveying pipe 5 under the action of the gravity, the raw material adsorbed with the paraxylene flows downwards along the backflow plate 17 in an inclined mode to realize separation of the adsorbent and the outer cylinder, when the requirement is stated, the condition that the raw material directly flows to the adsorption and desorption equipment can be effectively avoided by adopting the inclined inner cylinder 9 and the inclined outer cylinder 10 compared with the horizontally designed inner cylinder 9 and the horizontally designed outer cylinder 10, the separation effect is ensured, the lifting and conveying are not required, the included angle between the outer cylinder 10 and the horizontal plane is not more than 15 degrees, so that the resistance when the raw material and the solvent are driven to flow upwards is reduced, and the flow effect is ensured;

in particular, in order to ensure the separation effect, the liquid level of the adsorbent layer should be higher than the gap between the outer cylinder 10 and the inner cylinder 9, and on the other hand, there is a certain gap between the reflux plate 17 and the inner cylinder 9, and at this time, the layered liquid level of the raw material and the adsorbent to which paraxylene is adsorbed (the layered liquid level is an assumed level for easy understanding) is located between the reflux plate 17 and the inner cylinder 9, and both the raw material and the adsorbent are dynamic, and the liquid level is a range value, and the adsorbent is solid but still has a part of the raw material solution, so that the adsorbent is in a state of solid-liquid mixing), at this time, the raw material adsorbed paraxylene in the upper layer flows back down along the reflux plate 17, and the mixed solvent located between the reflux plate 17 and the inner cylinder 9 flows back down and mixes twice after contacting the annular baffle plate 18, and further the adsorbent and the raw material adsorbed paraxylene are separated again by the action of centrifugal force, improve this department liquid level to a certain extent simultaneously, make the raw materials that obscures near sideboard adsorb paraxylene flow out along backward flow board 17, in this kind of paraxylene adsorption type separator, through setting up the mixed separation subassembly, can make the adsorbent mix with the raw materials fast at centrifugal force, accelerate the adsorption efficiency of adsorbent, and utilize centrifugal force to make the adsorbent separate with the raw materials after adsorbing paraxylene, not only accelerated the mixture and the separating speed of adsorbent and raw materials, can also realize continuous production, very big improvement production efficiency, single set of device treatment scale possesses very big promotion.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (9)

1. The p-xylene adsorption type separation device comprises a front treatment device (1), and is characterized in that one end of the front treatment device (1) is communicated with a tank body (2), the tank body (2) is provided with a driving assembly (4), a mixing separation assembly is arranged in the tank body (2), the side wall of the tank body (2) is communicated with a conveying pipe (5), the conveying pipe (5) is provided with a pressure pump (6), and one end, far away from the tank body (2), of the conveying pipe (5) is communicated with an adsorption tank (7);

mix the separable set and include with jar body (2) inner wall fixed connection's support frame (8), it is connected with urceolus (10) and inner tube (9) to rotate on support frame (8), urceolus (10) and inner tube (9) coaxial setting, urceolus (10) and inner tube (9) all are connected the setting with drive assembly (4) transmission, fixedly connected with guide plate (11) in urceolus (10), and guide plate (11) and the outer wall counterbalance setting of inner tube (9), a plurality of drainage plates (12) of encircleing the setting of inner wall fixedly connected with of inner tube (9), the inner wall fixedly connected with holding tank (13) of the jar body (2), and the lower extreme of urceolus (10) is located and sets up in holding tank (13).

2. The paraxylene adsorption separation device according to claim 1, wherein a retainer ring (14) is rotatably connected to one end of the inner cylinder (9) close to the holding tank (13), the side wall of the retainer ring (14) is fixedly connected with the inner wall of the tank body (2) through a connecting rod (15), a feed pipe (16) for adding an adsorbent is further fixedly connected to the side wall of the connecting rod (15), a reflux plate (17) is fixedly connected to the inner wall of the tank body (2) and is obliquely arranged, one end of the reflux plate (17) is inserted into the inner cylinder (9) for arrangement, and the side wall of the tank body (2) far away from the holding tank (13) is communicated with the delivery pipe (5).

3. The paraxylene adsorption separation device according to claim 2, wherein the inner cylinder (9) comprises a cylinder body (91), the inner wall of the cylinder body (91) close to the retainer ring (14) is connected with a collection shell (92) in a sliding manner, the collection shell (92) is internally and fixedly connected with a first mesh plate (93), the collection shell (92) is connected with a second mesh plate (94) in a sliding manner, one side of the collection shell (92) far away from the first mesh plate (93) is provided with a third mesh plate (96), one end of the retainer ring (14) close to the collection shell (92) is fixedly connected with a round sleeve (97), the outer wall of the round sleeve (97) is provided with two spiral grooves (98) which are arranged in a staggered manner, the inner wall of the collection shell (92) close to the spiral grooves (98) is rotatably connected with a rotating shaft (99), and the side wall of the rotating shaft (99) is fixedly connected with a guide block (910), and the both ends of guide block (910) all are provided with triangle piece (911), the lateral wall of pivot (99) is fixedly connected with guide bar still, and spout (95) have been seted up to the lateral wall of guide bar, the lateral wall fixedly connected with of second otter board (94) and slider (912) that spout (95) match.

4. The paraxylene adsorption type separation device according to claim 2, wherein the drive assembly (4) comprises a drive motor (41), the output end of the drive motor (41) penetrates through the side wall of the tank body (2), the output end of the drive motor (41) is fixedly connected with a rotating rod (42), the rotating rod (42) is fixedly connected with the inner cylinder (9), the outer wall of the inner cylinder (9) is fixedly connected with a latch (43) arranged in a surrounding mode, the side wall of the support frame (8) is rotatably connected with a gear set meshed with the latch (43), and the inner wall of the outer cylinder (10) is fixedly connected with an inner gear (44) meshed with the gear set.

5. The paraxylene adsorption separation device according to claim 2, wherein the lower end of the inner cylinder (9) is provided with a through hole (3) which is arranged in a surrounding way, a filtering membrane is arranged in the through hole (3), and the inner wall of the inner cylinder (9) close to the reflux plate (17) is fixedly connected with an annular baffle plate (18).

6. The paraxylene adsorption separation device according to claim 1, wherein the delivery pipe (5) is further communicated with a shunt pipeline (19), the shunt pipeline (19) is provided with an electromagnetic valve (20), and the number of the adsorption tanks (7) is matched with the shunt number of the shunt pipeline (19).

7. The paraxylene adsorption type separation device according to claim 3, wherein the gear set comprises a driving gear (45) meshed with the latch (43) and a driven gear (46) meshed with the internal gear (44), the driving gear (45) and the driven gear (46) are both rotatably connected with the support frame (8), and a speed change gear (47) meshed with the driven gear (46) is fixedly connected to the side wall of the driving gear (45).

8. The paraxylene adsorption separation device according to claim 2, wherein the reflux plate (17) is wrapped by a protective cover (21), the cross section of the reflux plate (17) is arc-shaped, and one end of the reflux plate (17) far away from the tank body (2) is fixedly connected with a cover plate (22).

9. The paraxylene adsorptive separation device according to claim 2, wherein said guide plate (11) and said flow guide plate (12) are both helical, and the pitch of the guide plate (11) is smaller than the pitch of the flow guide plate (12).

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