A high-purity n-heptane precision separation device

Abstract

The invention discloses a high-purity n-heptane precision separation device, which relates to the technical field of n-heptane preparation. The device comprises a base, a support shaft is rotatably arranged on the base, and a positioning part for fixing an extraction bottle is arranged on the support shaft; L-shaped frames are symmetrically and fixedly arranged on both sides of the base, and an annular frame is fixedly arranged at the end of the L-shaped frame, and a first feed part for adding sulfuric acid solution, a second feed part for adding nitric acid solution, an extraction part, a third feed part for adding activated carbon and potassium permanganate, and a distillation part are arranged in sequence on the circumference of the annular frame; the device also comprises a rotating part and an oscillating part, the rotating part is used to drive the support shaft to rotate, so as to drive the extraction bottle to move to various parts; the oscillating part is used to oscillate the distillation bottle; in the process of preparing high-purity n-heptane, the invention basically does not need manual operation, and can fully stir the solution through the oscillating part after adding the solution to the extraction bottle each time, so that solutions with different densities can also be fully mixed.

Description

Technical Field

[0001] The invention relates to the technical field of n-heptane preparation, and in particular to a high-purity n-heptane precision separation device. Background Art

[0002] n-Heptane is a typical non-polar solvent and one of the most widely used hydrocarbon solvents in industry. It is widely used in the production of coatings, dyes, pigments, inks, adhesives, medicines, pesticides, foods, feed additives, flavors and fragrances, and cosmetics. Pure n-heptane is used as a standard for chromatographic analysis and a standard solvent for octane number determination. It is also used in organic synthesis, in the preparation of experimental reagents, as an extraction solvent for animal and plant oils and fats, and as a quick-drying rubber adhesive and rubber solvent. It is also used in the manufacture of cosmetics and as a solvent for cleaning coatings, paints, quick-drying inks, and printing machine parts.

[0003] In the prior art, in order to further remove unsaturated hydrocarbons in the raw material, it may be necessary to perform oxidation treatment on n-heptane. The specific method is to take the raw material n-heptane, add a sulfuric acid solution with a volume concentration of 10% and a nitric acid solution with a volume concentration of 40% (the volume ratio of sulfuric acid to nitric acid is 1:3) to it in sequence, stir it, let it stand for stratification, discard the acid layer, retain the organic layer, and add activated carbon and potassium permanganate to this organic layer for oxidation;

[0004] In actual application, when the raw material n-heptane is mixed with different solutions, the solution in the extraction bottle is usually stirred by centrifugation. However, due to the different densities of the solutions, each solution only rotates in the corresponding layer, and different solutions cannot be fully mixed. However, when manual oscillation is used, the efficiency is low. Summary of the invention

[0005] The object of the present invention is to provide a high-purity n-heptane precision separation device to solve the following technical problems:

[0006] When the raw material n-heptane is mixed with different solutions, the solution in the extraction bottle is usually stirred by centrifugation. However, due to the different densities of the solutions, each solution only rotates in the corresponding layer, and the different solutions cannot be fully mixed.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A high-purity n-heptane precision separation device comprises a base, a support shaft is rotatably arranged on the base, and a positioning part for fixing an extraction bottle is provided on the support shaft;

[0009] L-shaped frames are symmetrically fixedly arranged on both sides of the base, a ring frame is fixedly arranged at the end of the L-shaped frame, and a first feed part for adding sulfuric acid solution, a second feed part for adding nitric acid solution, an extraction part, a third feed part for adding activated carbon and potassium permanganate, and a distillation part are arranged in sequence around the ring frame;

[0010] It also includes a rotating part and an oscillating part, wherein the rotating part is used to drive the support shaft to rotate so as to drive the extraction bottle to move to various positions;

[0011] The oscillating part is used for oscillating the extraction bottle.

[0012] Preferably, a feeding pipe for feeding is provided on the extraction bottle, and a discharging pipe for discharging is provided at the bottom of the extraction bottle.

[0013] Preferably, the rotating part includes a first gear fixedly arranged on the support shaft, a first motor fixedly arranged on the base, a second gear meshing with the first gear fixedly arranged at the output end of the first motor, a support plate fixedly arranged at the top end of the support shaft, a support fixedly arranged at the end of the support plate, and an extraction bottle arranged on one side of the support.

[0014] Preferably, the oscillating part comprises a centrifugal module and a flipping module, the centrifugal module is used to drive the positioned extraction bottle to rotate to perform centrifugal motion, and the flipping module is used to drive the extraction bottle to flip back and forth between the horizontal direction and the vertical direction while rotating.

[0015] Preferably, the centrifugal module comprises a rotating shaft rotatably arranged at the end of the support, one end of the rotating shaft is fixed to the output end of the second motor fixedly arranged at one side of the support, and the other end of the rotating shaft is fixed to the first bevel gear, and the first bevel gear is meshed with the second bevel gear;

[0016] Among them, the first driving seat is rotatably arranged on the rotating shaft, a through groove is opened between the two bevel gears, a cylinder is fixedly arranged in the through groove, a second driving seat is rotatably arranged on the cylinder, the second driving seat is fixed to the first driving seat through an L-shaped support plate, and the extraction bottle is fixed on the second bevel gear through a positioning part.

[0017] Preferably, the flip module comprises a driving plate fixedly arranged on the first driving seat, the driving plate is arranged obliquely, a guide groove is provided on the driving plate, a pin is slidably embedded in the guide groove, one side of the pin is fixed to the push plate, and the other end of the push plate is fixed to a receiving plate fixedly arranged vertically;

[0018] Among them, a receiving seat is fixedly arranged on the support, a driving shaft is rotatably arranged in the receiving seat, a cam is fixedly arranged at one end of the driving shaft, an outer end surface of the cam is slidingly abutted against the receiving plate, the other end of the driving shaft is fixed to the first rotating wheel, a second rotating wheel is fixedly arranged at the output end of the second motor, and the second rotating wheel is connected to the first rotating wheel through a belt transmission.

[0019] Preferably, a baffle is fixedly arranged on the support, a guide rod is fixedly arranged between the baffle and the receiving seat, and the receiving plate is fixed to a guide plate slidably arranged on the guide rod;

[0020] Wherein, a first spring is arranged on the guide rod, one end of the first spring is fixed to the baffle plate, and the other end of the first spring is fixed to the guide plate.

[0021] Preferably, the positioning portion comprises a plurality of groups of strip-shaped grooves arranged in a circumferential array on the inner end surface of the cylinder, and a plurality of groups of strip-shaped seats engaging with the strip-shaped grooves are correspondingly arranged on the tube wall of the discharge tube.

[0022] Preferably, the positioning part further comprises a positioning ring, the inner ring surface of the positioning ring is provided with a plurality of groups of grooves corresponding to and engaging with the strip-shaped card seats, the groove wall of the groove is provided with positioning rods which are slidably inserted and arranged, each positioning rod is provided with an arc-shaped end facing the ring center end, a second spring is provided on the positioning rod, one end of the second spring is fixed to the ring body, and the other end is fixed to the end of the positioning rod;

[0023] A slot corresponding to the positioning rod is provided on the strip card seat, and the bottom of the strip card seat is arranged as an inclined guide surface.

[0024] Preferably, a support ring is rotatably arranged at the bottom of the positioning ring, an adjustment plate is fixedly arranged on one side of the support ring, and the adjustment plate is fixed to the driving end of the electric push rod fixedly arranged on one side of the first driving seat.

[0025] Beneficial effects of the present invention:

[0026] (1) The present invention drives the support shaft to rotate through the rotating part, first rotates to the first feeding part, adds sulfuric acid solution to the extraction bottle, and then rotates to the second feeding part, adds nitric acid solution to the extraction bottle, and shakes the extraction bottle through the oscillation part. After standing and stratification, the acid layer is discarded through the extraction part, and the organic layer is retained. The extraction bottle is rotated to the third feeding part again, and a mixture of activated carbon and potassium permanganate is added to the extraction bottle. The mixture is stirred for a period of time through the oscillation part, and finally the extraction bottle is rotated to the distillation part, and then high-purity n-heptane is distilled. In the process of preparing high-purity n-heptane, the present invention basically does not require manual operation, and can be fully stirred by the oscillation part after adding solution to the extraction bottle each time, so that solutions with different densities can also be fully mixed, thereby improving the extraction quality;

[0027] (2) In the present invention, after each solution is added to the extraction bottle, the extraction bottle is first driven to rotate by the centrifugal module to perform centrifugal motion. During this process, the flip module drives the extraction bottle to deflect from the vertical direction to the horizontal direction, and then reset to the vertical state. This process can make the layers in the bottle easier to mix with each other, thereby improving the stirring effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] Figure 1 This is a schematic diagram of the structure of a high-purity n-heptane precision separation device of the present invention. Figure 1 ;

[0030] Figure 2 This is a schematic diagram of the structure of a high-purity n-heptane precision separation device of the present invention. Figure 2 ;

[0031] Figure 3 It is a schematic diagram of the structure inside an extraction bottle in a high-purity n-heptane precision separation device of the present invention;

[0032] Figure 4 It is a structural schematic diagram of a feed pipe in a high-purity n-heptane precision separation device of the present invention;

[0033] Figure 5 It is a structural schematic diagram of a bevel gear in a high-purity n-heptane precision separation device of the present invention;

[0034] Figure 6 This is a schematic diagram of the structure of the oscillating part of a high-purity n-heptane precision separation device of the present invention. Figure 1 ;

[0035] Figure 7 This is a schematic diagram of the structure of the oscillating part of a high-purity n-heptane precision separation device of the present invention. Figure 2 ;

[0036] Figure 8 This is a schematic diagram of the structure of the oscillating part of a high-purity n-heptane precision separation device of the present invention. Figure 3 ;

[0037] Fig. 9 It is a schematic structural diagram of a discharge pipe in a high-purity n-heptane precision separation device of the present invention;

[0038] Fig.10 It is a structural schematic diagram of a slide plate in a high-purity n-heptane precision separation device of the present invention;

[0039] Fig.11 It is a structural schematic diagram of a positioning ring in a high-purity n-heptane precision separation device of the present invention;

[0040] Fig.12 It is a structural schematic diagram of a cylinder in a high-purity n-heptane precision separation device of the present invention.

[0041] In the figure: 1, base; 2, first storage box; 3, extraction bottle; 4, second motor; 5, electric push rod; 6, receiving seat; 101, L-shaped frame; 102, first motor; 103, second gear; 104, support shaft; 105, support plate; 106, first gear; 107, annular frame; 201, second storage box; 202, third storage box; 203, liquid storage box; 204, distillation cylinder; 205, extraction tube; 206, liquid inlet pipe; 207, pipeline; 208, activated carbon adsorption column box; 209, feed pipe; 301, feed pipe; 302, discharge pipe; 303, strip card seat; 304, slot; 305, vertical channel; 306, horizontal channel; 307, slide; 308, third spring; 309, slide seat; 310, discharge port; 311, sealing plate ; 312, slide bar; 313, fourth spring; 314, slide plate; 315, plunger; 401, support; 402, rotating shaft; 403, first driving seat; 404, bevel gear one; 405, bevel gear two; 406, second driving seat; 407, second rotating wheel; 408, first rotating wheel; 409, belt; 501, adjustment plate; 502, positioning ring; 503, groove; 504, positioning rod; 505, second spring; 506, arc end; 507, cylinder; 508, strip slot; 509, inclined guide surface; 601, cam; 602, receiving plate; 603, driving shaft; 604, guide rod; 605, guide plate; 606, first spring; 607, baffle; 608, push plate; 609, driving plate; 610, guide groove; 611, pin shaft. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] Example 1

[0044] See also Figure 1 and Figure 3As shown, the present invention is a high-purity n-heptane precision separation device, comprising a base 1, a support shaft 104 is rotatably arranged on the base 1, and a positioning portion for fixing the extraction bottle 3 is provided on the support shaft 104; in one implementation of the present embodiment, a feeding pipe 301 for feeding is provided on the extraction bottle 3, and a discharge pipe 302 for discharging is provided at the bottom of the extraction bottle 3; specifically, before the high-purity n-heptane is prepared, the raw material n-heptane can be added to the extraction bottle 3 through the feeding pipe 301 and arranged on one side of the support shaft 104 through the positioning portion, and part of the solution in the preparation process can be discharged through the discharge pipe 302, wherein the extraction bottle 3, the feeding pipe 301 and the discharge pipe 302 are all made of transparent glass to facilitate observation by operators;

[0045] L-shaped frames 101 are symmetrically fixedly arranged on both sides of the base 1, and an annular frame 107 is fixedly arranged at the end of the L-shaped frame 101. The first feed part for adding sulfuric acid solution, the second feed part for adding nitric acid solution, the extraction part, the third feed part for adding activated carbon and potassium permanganate, and the distillation part are arranged in sequence around the annular frame 107;

[0046] It also includes a rotating part and an oscillating part, wherein the rotating part is used to drive the support shaft 104 to rotate, so as to drive the extraction bottle 3 to move to various positions;

[0047] The oscillating part is used to oscillate the extraction bottle 3; it can be explained that, in this embodiment, the rotation part drives the support shaft 104 to rotate, so that the positioned extraction bottle 3 moves along the first feed part, the second feed part, the extraction part, the third feed part and the distillation part in sequence, first rotates to the first feed part, adds a sulfuric acid solution with a volume concentration of 10% to the extraction bottle 3, and then rotates to the second feed part, adds a nitric acid solution with a volume concentration of 40% to the extraction bottle 3, and the volume ratio of sulfuric acid to nitric acid is 1:3; the extraction bottle 3 is shaken by the oscillating part, after standing and stratifying, the acid layer is discarded by the extraction part, the organic layer is retained, and the extraction bottle 3 is rotated to the third feed part again, and a mixture of activated carbon and potassium permanganate is added to the extraction bottle 3, and stirred for a period of time by the oscillating part, and finally the extraction bottle 3 is rotated to the distillation part, and then high-purity n-heptane is distilled out. In the process of preparing high-purity n-heptane in this embodiment, basically no manual operation is required, and after each solution is added to the extraction bottle 3, it can be fully stirred by the oscillating part, so that solutions with different densities can also be fully mixed, thereby improving the extraction quality.

[0048] Example 2

[0049] Based on Example 1, please refer to Figure 2The rotating part includes a first gear 106 fixedly arranged on the support shaft 104, a first motor 102 is fixedly arranged on the base 1, a second gear 103 meshing with the first gear 106 is fixedly arranged at the output end of the first motor 102, a support plate 105 is fixedly arranged at the top of the support shaft 104, a support 401 is fixedly arranged at the end of the support plate 105, and the extraction bottle 3 is arranged on one side of the support 401; it can be explained that the first motor 102 first drives the second gear 103 to rotate, and the second gear 103 can drive the support shaft 104 to rotate by meshing with the first gear 106, and the support shaft 104 drives the support 401 to rotate synchronously through the support plate 105, so as to drive the positioned extraction bottle 3 to move along each operating part;

[0050] It should be noted that the axis of the support shaft 104 coincides with the center line of the ring frame 107 .

[0051] See also Figure 8 As a further solution of this embodiment, the oscillation part includes a centrifugal module and a flipping module. The centrifugal module is used to drive the extraction bottle 3 to rotate after being positioned to perform centrifugal motion, and the flipping module is used to drive the extraction bottle 3 to flip back and forth between the horizontal direction and the vertical direction while rotating. It can be explained that when each solution is added to the extraction bottle 3, the extraction bottle 3 is first driven by the centrifugal module to rotate and perform centrifugal motion. During this process, the flipping module drives the extraction bottle 3 to deflect 90 degrees from the vertical direction to the horizontal direction, and then reset to the vertical state. This process can make it easy for the layers in the bottle to mix with each other, thereby improving the stirring effect.

[0052] See also Figure 5 and Figure 6 as well as Fig.12 The centrifugal module includes a rotating shaft 402 rotatably arranged at the end of the support 401, one end of the rotating shaft 402 is fixed to the output end of the second motor 4 fixedly arranged at one side of the support 401, and the other end of the rotating shaft 402 is fixed to the bevel gear 1 404, and the bevel gear 1 404 is meshed with the bevel gear 2 405, wherein the first driving seat 403 is rotatably arranged on the rotating shaft 402, a through groove is provided between the bevel gear 2 405, a cylinder 507 is fixedly arranged in the through groove, and a second driving seat 406 is rotatably arranged on the cylinder 507, the second driving seat 406 is fixed to the first driving seat 403 through an L-shaped support plate 411, and the extraction bottle 3 is fixed to the bevel gear 2 405 through a positioning portion; it can be explained that the second motor 4 drives the bevel gear 1 404 to rotate through the rotating shaft 402, and the bevel gear 1 404 drives the extraction bottle 3 to rotate by meshing with the bevel gear 2 405, and the extraction bottle 3 is in a vertical state at this time;

[0053] See also Figure 7 and Figure 8The flip module includes a driving plate 609 fixedly arranged on the first driving seat 403, the driving plate 609 is arranged in an inclined manner, a guide groove 610 is provided on the driving plate 609, a pin shaft 611 is slidably embedded in the guide groove 610, one side of the pin shaft 611 is fixed to the push plate 608, and the other end of the push plate 608 is fixed to the receiving plate 602 fixedly arranged vertically, wherein the receiving seat 6 is fixedly arranged on the support 401, and the driving shaft 603 is rotatably arranged in the receiving seat 6, a cam 601 is fixedly arranged at one end of the driving shaft 603, the outer end surface of the cam 601 is slidably abutted against the receiving plate 602, the other end of the driving shaft 603 is fixed to the first rotating wheel 408, and the second rotating wheel 407 is fixedly arranged at the output end of the second motor 4, and the second rotating wheel 407 is transmission-connected to the first rotating wheel 408 through a belt 409; it can be explained that when the second motor 4 drives the rotating shaft 402 to rotate The second rotating wheel 407 can be driven to rotate synchronously. The second rotating wheel 407 drives the first rotating wheel 408 to rotate through the belt 409. The first rotating wheel 408 drives the cam 601 to rotate through the driving shaft 603. The cam 601 pushes the receiving plate 602 and the push plate 608 to move in the horizontal direction. The push plate 608 pushes the pin shaft 611 to slide in the guide groove 610, and can synchronously drive the driving plate 609 and the first driving seat 403 to rotate on the rotating shaft 402. At the same time, the first driving seat 403 drives the second driving seat 406 to turn 90 degrees through the L-shaped support plate 411. The second driving seat 406 drives the bevel gear 2 405 to turn 90 degrees synchronously through the cylinder 507. At this time, the extraction bottle 3 is in a horizontal state. During this process, the bevel gear 2 405 is always meshed with the bevel gear 1 404, so it will not affect the normal rotation of the extraction bottle 3.

[0054] In this embodiment, a baffle 607 is also fixedly arranged on the support 401, a guide rod 604 is fixedly arranged between the baffle 607 and the receiving seat 6, and the receiving plate 602 is fixed to a guide plate 605 slidably arranged on the guide rod 604, wherein a first spring 606 is provided on the guide rod 604, one end of the first spring 606 is fixed to the baffle 607, and the other end is fixed to the guide plate 605; it can be understood that when the cam 601 pushes the receiving plate 602 to move, the receiving plate 602 squeezes the first spring 606 through the guide plate 605 to generate elastic force, and as the cam 601 continues to rotate, the first spring 606 can drive the guide plate 605 and the receiving plate 602 to reset, thereby driving the extraction bottle 3 to reset to a vertical state, and so on and so forth, thereby effectively improving the solution stirring effect.

[0055] See also Figure 3 , Figure 5 , Fig.11 and Fig.12The positioning part includes a plurality of groups of strip-shaped slots 508 arranged in a circumferential array on the inner end surface of the cylinder 507, and a plurality of groups of strip-shaped seats 303 engaging with the strip-shaped slots 508 are arranged on the wall of the discharge tube 302; specifically, after the discharge tube 302 at the bottom of the extraction bottle 3 is plugged into the cylinder 507, each strip-shaped seat 303 is engaged with the strip-shaped slots 508 one by one, so that when the driving bevel gear 2 405 rotates, the extraction bottle 3 can be driven to rotate synchronously;

[0056] See also Figure 3 In this embodiment, the positioning part also includes a positioning ring 502, and the inner ring surface of the positioning ring 502 is correspondingly provided with a plurality of groups of grooves 503 corresponding to the strip card seat 303, and the positioning rods 504 are slidably inserted in the groove wall of the groove 503, and each positioning rod 504 is arranged with an arc-shaped end 506 toward the center end of the ring, and a second spring 505 is provided on the positioning rod 504, one end of the second spring 505 is fixed to the ring body, and the other end is fixed to the end of the positioning rod 504, wherein the strip card seat 303 is provided with a slot 304 corresponding to the positioning rod 504, and the bottom of the strip card seat 303 is set to be inclined Guide surface 509; It can be explained that when the extraction bottle 3 is positioned, the extraction bottle 3 first passes through the positioning ring 502, and each arc-shaped end 506 first contacts the inclined guide surface 509, pushing the positioning rod 504 to move in the direction away from the ring center end. At this time, the second spring 505 contracts to generate elastic force. When it moves to the slot 304 position, the positioning rod 504 is inserted into the slot 304 under the action of the elastic force to achieve a snap connection, thereby fixing the extraction bottle 3, so that the extraction bottle 3 will not fall off during the reciprocating flipping process. When the extraction bottle 3 needs to be removed, the positioning rod 504 can be pulled to both sides;

[0057] Specifically, a support ring is rotatably arranged at the bottom of the positioning ring 502, and an adjustment plate 501 is fixedly arranged on one side of the support ring. The adjustment plate 501 is fixed to the driving end of the electric push rod 5 fixedly arranged on one side of the first driving seat 403; specifically, the positioning ring 502 is supported by the support ring, and when the extraction bottle 3 is installed, the discharge pipe 302 can directly pass through the support ring; at the same time, in this embodiment, by arranging the electric push rod 5, when adding materials to the extraction bottle 3 or discharging materials, the electric push rod 5 can drive the extraction bottle 3 to rise and fall.

[0058] See also Figure 1 and Figure 2The first feed part includes a first storage box 2 for storing sulfuric acid solution, the second feed part includes a second storage box 201 for storing nitric acid solution, and the third feed part includes a third storage box 202 for storing a mixture of activated carbon and potassium permanganate. The first storage box 2, the second storage box 201 and the third storage box 202 are all fixedly arranged on the first motor 102. The bottom of the first storage box 2, the second storage box 201 and the third storage box 202 are all provided with a delivery pipe 209, and a solenoid valve is arranged in the delivery pipe 209. The solenoid valve is used to control the opening and closing of the delivery pipe 209 to discharge the corresponding material into the extraction bottle 3;

[0059] See also Figure 3-Figure 4 , a plunger 315 is slidably embedded in the feed pipe 301, and a slide groove 307 is symmetrically provided on the inner wall of the feed pipe 301. The plunger 315 is fixed to a slide seat 309 slidably arranged in the slide groove 307. A third spring 308 fixed to the groove wall is also provided in the slide groove 307, and the other end of the third spring 308 is fixed to the slide seat 309. The plunger 315 is provided with a vertical channel 305 along the axial direction of the discharge pipe 302, and a horizontal channel 306 connected to the vertical channel 305 is provided at the bottom of the plunger 315; specifically, the outer wall of the plunger 315 is slidably fitted with the inner wall of the feed pipe 301, and the material in the extraction bottle 3 will not flow out along the gap between the plunger 315 and the feed pipe 301. In the initial state, based on the elastic force of the third spring 308, the top of the plunger 315 is in contact with the feed pipe 301 The opening of the extraction bottle 3 is flush with the horizontal channel 306. At this time, the horizontal channel 306 is located in the feed pipe 301. When it is necessary to add material to the extraction bottle 3, the feed pipe 301 and the corresponding delivery pipe 209 are kept on the same axis, and the extraction bottle 3 is driven to rise by the electric push rod 5, so that the delivery pipe 209 is inserted into the feed pipe 301 and the plunger 315 is pushed toward the extraction bottle 3. When the horizontal channel 306 is connected to the inside of the extraction bottle 3, the solenoid valve is opened, and the material can be discharged into the extraction bottle 3 along the delivery pipe 209, the vertical channel 305 and the horizontal channel 306. After the discharge is completed, the electric push rod 5 is reset, and the plunger 315 is reset under the action of the third spring 308, and the feed pipe 301 is limited again. Based on the limit of the slide groove 307, the plunger 315 cannot be separated from the feed pipe 301 upward;

[0060] In addition, in this embodiment, the diameter of the material delivery pipe 209 is the same as that of the plunger 315 .

[0061] See also Figure 1-Figure 2The extraction part includes a liquid storage tank 203 arranged at the bottom of the second storage tank 201, and an extraction tube 205 is provided on the liquid storage tank 203; the distillation part includes a distillation cylinder 204, one side of the distillation cylinder 204 is connected to the liquid inlet pipe 206 through a pump body, and the other side of the distillation cylinder 204 is connected to the activated carbon adsorption column box 208 through a pipeline 207; specifically, after the liquid in the extraction bottle 3 is allowed to stand and stratify, the acid layer liquid is discharged into the liquid storage tank 203 through the discharge pipe 302 and the extraction tube 205, the acid layer is discarded, and the organic layer is retained;

[0062] During distillation, the raw material n-heptane is discharged into the distillation cylinder 204 through the discharge pipe 302 and the liquid inlet pipe 206. After the distillation is completed, the highly oxidized substances and benzene ring-containing substances formed during the oxidation process are removed through the activated carbon adsorption column box 208;

[0063] It is also necessary to note that, please refer to Fig. 9 and Fig.10 A discharge port 310 is provided at the bottom of the discharge pipe 302, a sealing plate 311 is embedded in the discharge port 310, three groups of sliding rods 312 are fixedly arranged in a circumferential array in the discharge pipe 302, the sealing plate 311 is fixed to a slide plate 314 slidably arranged on the slide rod 312, and a fourth spring 313 is further provided on the slide rod 312, one end of the fourth spring 313 is fixed to the slide plate 314, and the other end is fixed to the end of the slide rod 312; specifically, in the initial state, based on the elastic force of the fourth spring 313, the sealing plate 311 is at In the state of sealing the discharge port 310, when the discharge tube 302 moves to the extraction tube 205 or the liquid inlet tube 206, the extraction bottle 3 is driven to descend by the electric push rod 5, and the extraction tube 205 or the liquid inlet tube 206 can lift the sealing plate 311 and separate it from the discharge port 310. At this time, the fourth spring 313 contracts to generate elastic force, and the material in the extraction bottle 3 can be discharged through the gap between the sealing plate 311 and the tube wall. After the discharge is completed, the electric push rod 5 is reset, and the sealing plate 311 can re-seal the discharge port 310.

[0064] A separation method of a high-purity n-heptane precision separation device comprises the following steps:

[0065] The first motor 102 drives the second gear 103 to rotate, and the second gear 103 can drive the support shaft 104 to rotate by meshing with the first gear 106. The support shaft 104 drives the support 401 to rotate synchronously through the support plate 105, so as to drive the extraction bottle 3 to move along various operating parts;

[0066] Turn to the first feeding part and add a sulfuric acid solution with a volume concentration of 10% into the extraction bottle 3;

[0067] Then turn to the second feeding part, add nitric acid solution with a volume concentration of 40% into the extraction bottle 3, and the volume ratio of sulfuric acid to nitric acid is 1:3;

[0068] The extraction bottle 3 is shaken by the oscillation part, and after standing and stratification, the acid layer is discarded by the extraction part, and the organic layer is retained;

[0069] Turn to the third feeding section, add the mixture of activated carbon and potassium permanganate into the extraction bottle 3, and stir for a period of time through the oscillation section;

[0070] The extraction bottle 3 is rotated to the distillation section, and then high-purity n-heptane is distilled out.

[0071] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0072] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0073] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A high-purity n-heptane precision separation device, comprising a base (1), characterized in that: The base (1) is rotatably provided with a support shaft (104), and the support shaft (104) is provided with a positioning portion for fixing the extraction bottle (3); L-shaped frames (101) are symmetrically fixedly arranged on both sides of the base (1), an annular frame (107) is fixedly arranged at the end of the L-shaped frame (101), and a first feed part for adding sulfuric acid solution, a second feed part for adding nitric acid solution, an extraction part, a third feed part for adding activated carbon and potassium permanganate, and a distillation part are sequentially arranged around the annular frame (107); It also includes a rotating part and an oscillating part, wherein the rotating part is used to drive the support shaft (104) to rotate, so as to drive the extraction bottle (3) to move to various positions; The oscillating part is used to oscillate the extraction bottle (3); The extraction bottle (3) is provided with a feeding pipe (301) for feeding materials, and the bottom of the extraction bottle (3) is provided with a discharge pipe (302) for discharging materials; The rotating part comprises a first gear (106) fixedly arranged on the support shaft (104), a first motor (102) fixedly arranged on the base (1), a second gear (103) meshing with the first gear (106) fixedly arranged at the output end of the first motor (102), a support plate (105) fixedly arranged at the top end of the support shaft (104), a support seat (401) fixedly arranged at the end of the support plate (105), and an extraction bottle (3) arranged on one side of the support seat (401); The oscillating part comprises a centrifugal module and a flipping module, the centrifugal module is used to drive the extraction bottle (3) to rotate after being positioned to perform centrifugal movement, and the flipping module is used to drive the extraction bottle (3) to flip back and forth between the horizontal direction and the vertical direction while rotating; The centrifugal module comprises a rotating shaft (402) rotatably arranged at the end of a support (401), one end of the rotating shaft (402) is fixed to the output end of a second motor (4) fixedly arranged at one side of the support (401), the other end of the rotating shaft (402) is fixed to a bevel gear 1 (404), and the bevel gear 1 (404) is meshed with a bevel gear 2 (405); Wherein, a first drive seat (403) is rotatably arranged on the rotating shaft (402), a through slot is provided between the second bevel gear (405), a cylinder (507) is fixedly arranged in the through slot, a second drive seat (406) is rotatably arranged on the cylinder (507), the second drive seat (406) is fixed to the first drive seat (403) via an L-shaped support plate (411), and the extraction bottle (3) is fixed to the second bevel gear (405) via a positioning portion; The positioning portion comprises a plurality of groups of strip-shaped slots (508) arranged in a circumferential array on the inner end surface of the cylinder (507), and a plurality of groups of strip-shaped seats (303) engaging with the strip-shaped slots (508) are correspondingly arranged on the tube wall of the discharge tube (302).

2. A high-purity n-heptane precision separation device according to claim 1, characterized in that: The flip module comprises a driving plate (609) fixedly arranged on the first driving seat (403), the driving plate (609) being arranged in an inclined manner, a guide groove (610) being provided on the driving plate (609), a pin shaft (611) being slidably embedded in the guide groove (610), one side of the pin shaft (611) being fixed to the push plate (608), and the other end of the push plate (608) being fixed to a receiving plate (602) fixedly arranged vertically thereto; A receiving seat (6) is fixedly arranged on the support (401), a driving shaft (603) is rotatably arranged in the receiving seat (6), a cam (601) is fixedly arranged at one end of the driving shaft (603), an outer end surface of the cam (601) is in sliding contact with a receiving plate (602), the other end of the driving shaft (603) is fixed to a first rotating wheel (408), a second rotating wheel (407) is fixedly arranged at the output end of the second motor (4), and the second rotating wheel (407) is transmission-connected to the first rotating wheel (408) via a belt (409).

3. A high-purity n-heptane precision separation device according to claim 2, characterized in that: A baffle (607) is also fixedly arranged on the support (401), a guide rod (604) is fixedly arranged between the baffle (607) and the receiving seat (6), and the receiving plate (602) is fixed to a guide plate (605) slidably arranged on the guide rod (604); A first spring (606) is provided on the guide rod (604); one end of the first spring (606) is fixed to the baffle (607), and the other end of the first spring (606) is fixed to the guide plate (605).

4. The high-purity n-heptane precision separation device according to claim 1, characterized in that: The positioning portion further comprises a positioning ring (502), the inner ring surface of the positioning ring (502) correspondingly opens a plurality of groups of grooves (503) correspondingly engaged with the strip-shaped holder (303), the groove wall of the groove (503) is slidably inserted into the positioning rod (504), each positioning rod (504) is arranged with an arc-shaped end (506) toward the center end of the ring, and a second spring (505) is arranged on the positioning rod (504), one end of the second spring (505) is fixed to the ring body, and the other end is fixed to the end of the positioning rod (504); A slot (304) corresponding to the positioning rod (504) is provided on the strip-shaped card seat (303), and the bottom of the strip-shaped card seat (303) is arranged as an inclined guide surface (509).

5. A high-purity n-heptane precision separation device according to claim 4, characterized in that: A support ring is rotatably arranged at the bottom of the positioning ring (502), an adjustment plate (501) is fixedly arranged on one side of the support ring, and the adjustment plate (501) is fixed to the driving end of the electric push rod (5) fixedly arranged on one side of the first driving seat (403).

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