CN113786787A

CN113786787A - Ultrahigh-temperature continuous carbon nanotube purifying equipment

Info

Publication number: CN113786787A
Application number: CN202110567326.2A
Authority: CN
Inventors: 尤瑞滨
Original assignee: Fujian Zhonghe New Materials Co ltd
Current assignee: Fujian Zhonghe New Materials Co ltd
Priority date: 2021-05-24
Filing date: 2021-05-24
Publication date: 2021-12-14

Abstract

The invention relates to the technical field of carbon nanotube equipment, in particular to ultra-high temperature continuous carbon nanotube purification equipment. The (mixing) shaft rotates and drives the sliding sleeve and rotate, forces the installation cover to slide from top to bottom along the slide bar, and then orders about cleaning support and cleaning scraper blade and reciprocate. The impurities on the outer wall of the protective cover are scraped by the cleaning scraper. The influence on the heat transfer efficiency of the heating pipe due to the impurities attached to the outside of the protective cover is avoided, and therefore the energy loss of the equipment is increased.

Description

Ultrahigh-temperature continuous carbon nanotube purifying equipment

Technical Field

The invention relates to the technical field of ultrasonic seams, in particular to ultrahigh-temperature continuous carbon nanotube purification equipment.

Background

The carbon nano tube has special structural characteristics, remarkable physical and chemical properties and potential application value in the future high-tech field, is a research front and a hot spot in the fields of physics, chemistry, biology, materials and the like, and has wide application prospect in the fields of nano electronic devices, catalyst carriers, electrochemical materials, composite materials and the like.

For example, chinese patent application No. CN201920344690.0 discloses a carbon nanotube high temperature continuous purification equipment, including adding feed tank, high temperature purification jar and product cooling tank, high temperature purification jar sets up between adding feed tank and product cooling tank, the upper end of adding feed tank is connected with the input tube, the material transfer valve is all installed to the lower extreme of adding feed tank, high temperature purification jar and product cooling tank, be connected with first connecting pipe between adding feed tank and the high temperature purification jar, be connected with the second between high temperature purification jar and the product cooling tank and connect the jar, the output tube is installed to the lower extreme of product cooling tank, the vacuum pump is installed to the upper end of high temperature purification jar. The patent can meet the requirement of general carbon nanotube purification, only easily-treated iodine particles are generated in the proposed process, and the iodine particles have relatively small environmental pollution and do not have relatively large danger compared with stronger reducing agents.

However, the above patent still has problems, for example, the high temperature purification tank of the patent is not easy to clean, and after long-term use, impurities are attached to the inner wall of the tank body, which further affects the heat conduction of the heating pipe and increases the energy loss.

Based on the above, the invention designs the ultrahigh-temperature continuous carbon nanotube purifying equipment to solve the technical problems.

Disclosure of Invention

The invention aims to provide ultrahigh-temperature continuous carbon nanotube purification equipment to solve the technical problems.

In order to achieve the purpose, the invention provides the following technical scheme: an ultra-high temperature continuous carbon nanotube purification device comprises an iodine vapor inlet pipe and a carbon nanotube inlet pipe, wherein the iodine vapor inlet pipe and the carbon nanotube inlet pipe are connected with a mixer, the mixer is connected with a distributor, the distributor is connected with three reaction kettles for purifying carbon nanotubes, a first inlet pipe and an exhaust pipe are arranged at the upper end of each reaction kettle, a discharge pipe is arranged at the lower end of each reaction kettle, the reaction kettles are connected with a tail gas treatment device, a heating device and a stirring shaft are arranged in the inner cavities of the reaction kettles, the stirring shaft rotates under the driving of a first motor, a cleaning device for cleaning the heating device is arranged on the outer wall of the stirring shaft, the cleaning device comprises a sliding sleeve fixed on the outer wall of the stirring shaft, two spiral grooves are formed in the outer wall of the sliding sleeve, the peaks of the two spiral grooves are communicated, and the lowest points of the two spiral grooves are communicated, spiral recess sliding connection has the installation cover, the reation kettle top wall is provided with the slide bar, slide bar and installation cover sliding connection, the installation cover outer wall is provided with clean support, clean support outer wall is provided with a plurality of clean scraper blades, clean scraper blade and heating device butt.

Preferably, a water spraying device is arranged at the upper end of the reaction kettle and comprises a water distribution block fixed at the top of the reaction kettle, the water distribution block is communicated with a water delivery pipe, a plurality of water outlet pipes are arranged on the water distribution block, each water outlet pipe is connected with a first one-way valve, and the first one-way valve is connected with a nozzle used for spraying water to an inner cavity of the reaction kettle.

Preferably, heating device is including fixing the heating pipe at the reation kettle inner wall, the heating pipe outside is provided with the protection casing, the protection casing is fixed at the reation kettle inner wall, clean scraper blade and protection casing butt.

Preferably, the reation kettle lower extreme is provided with sampling device, sampling device is including the sampling tube with the reation kettle inner chamber intercommunication, the sampling tube outer wall is provided with first control valve, the sampling tube is connected with the seal box, the chamber door has been seted up on the seal box, the seal box is connected with the vacuum pump through the back flow, back flow and reation kettle inner chamber intercommunication, the back flow is connected with the second check valve.

Preferably, the reaction kettle is provided with a fixing ring fixed in the inner cavity of the reaction kettle, and the fixing ring is rotatably connected with the stirring shaft.

Preferably, the top of the fixing ring is provided with a connecting sleeve, the connecting sleeve and the stirring shaft are coaxially arranged, the connecting outer wall is provided with a sliding groove, the sliding groove is connected with a sliding block in a sliding manner, and the sliding block is fixedly connected with the cleaning support.

Preferably, the tail gas processing apparatus including the tail gas treatment jar and with the aspirator pump of blast pipe intercommunication, aspirator pump and tail gas treatment jar inner chamber intercommunication, the tail gas treatment jar is provided with bin outlet, air inlet and iodine vapor outlet, iodine vapor outlet connection has the second control valve, the second control valve is connected with the jar of keeping in.

Preferably, the temporary storage tank is communicated with an iodine vapor feeding pipe.

Preferably, the discharge opening is provided with a screw shaft.

Compared with the prior art, the invention has the beneficial effects that: the (mixing) shaft rotates and drives the sliding sleeve and rotate, and the rotation of sliding sleeve forces the installation cover to slide from top to bottom along the slide bar, and then orders about clean support and clean scraper blade and reciprocate. The impurities on the outer wall of the protective cover are scraped by the cleaning scraper. The influence on the heat transfer efficiency of the heating pipe due to the impurities attached to the outside of the protective cover is avoided, and therefore the energy loss of the equipment is increased.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the reactor structure of the present invention;

FIG. 3 is an enlarged view of a portion A of FIG. 2;

FIG. 4 is an enlarged view of a portion B of FIG. 2;

FIG. 5 is a schematic view of the structure of the tail gas treatment device of the present invention;

FIG. 6 is a schematic view of a structure of a tail gas sliding sleeve according to the present invention;

FIG. 7 is a schematic view of the structure of the water spraying device of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. an iodine vapor feed pipe; 2. a carbon nanotube feed tube; 3. a mixer; 4. a dispenser; 5. a reaction kettle; 6. a first feed tube; 7. an exhaust pipe; 8. a discharge pipe; 9. a tail gas treatment device; 10. a heating device; 11. a stirring shaft; 12. a cleaning device; 13. a sliding sleeve; 14. a spiral groove; 15. installing a sleeve; 16. a slide bar; 17. cleaning the bracket; 18. a cleaning blade; 19. a water spraying device; 20. a water distribution block; 21. a water outlet pipe; 22. a first check valve; 23. a nozzle; 24. heating a tube; 25. a protective cover; 26. a sampling device; 27. a sampling tube; 28. a first control valve; 29. a sealing box; 30. a box door; 31. a vacuum pump; 32. a second one-way valve; 33. a fixing ring; 34. connecting sleeves; 35. a chute; 36. a slider; 37. a tail gas treatment tank; 38. a getter pump; 39. a discharge outlet; 40. an air inlet; 41. an iodine vapor outlet; 42. a second control valve; 43. a temporary storage tank; 44. a screw shaft.

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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b):

referring to fig. 1-7, the present invention provides a technical solution: an ultra-high temperature continuous carbon nanotube purification device comprises an iodine vapor inlet pipe 1 and a carbon nanotube inlet pipe 2, wherein the iodine vapor inlet pipe 1 and the carbon nanotube inlet pipe 2 are connected with a mixer 3, the mixer 3 is connected with a distributor 4, the distributor 4 is connected with three reaction kettles 5 for purifying carbon nanotubes, the upper end of each reaction kettle 5 is provided with a first inlet pipe 6 and an exhaust pipe 7, the lower end of each reaction kettle 5 is provided with a discharge pipe 8, the reaction kettles 5 are connected with a tail gas treatment device 9, the inner cavity of each reaction kettle 5 is provided with a heating device 10 and a stirring shaft 11, the outer wall of each stirring shaft 11 is provided with a cleaning device 12 for cleaning the heating device 10, the cleaning device 12 comprises a sliding sleeve 13 fixed on the outer wall of the stirring shaft 11, the outer wall of the sliding sleeve 13 is provided with two spiral grooves 14, the highest points of the two spiral grooves 14 are communicated, and the lowest points of the two spiral grooves 14 are communicated, spiral groove 14 is connected with mounting sleeve 15 in a sliding manner, the top wall of reaction kettle 5 is provided with slide bar 16, slide bar 16 is connected with mounting sleeve 15 in a sliding manner, the outer wall of mounting sleeve 15 is provided with cleaning support 17, the outer wall of cleaning support 17 is provided with a plurality of cleaning scrapers 18, and cleaning scrapers 18 are abutted to heating device 10.

Specifically, a water spraying device 19 is arranged at the upper end of the reaction kettle 5, the water spraying device 19 comprises a water distribution block 20 fixed at the top of the reaction kettle 5, the water distribution block 20 is communicated with a water pipe, a plurality of water outlet pipes 21 are arranged on the water distribution block 20, each water outlet pipe 21 is connected with a first one-way valve 22, and the first one-way valve 22 is connected with a nozzle 23 used for spraying water to the inner cavity of the reaction kettle 5.

Specifically, the heating device 10 includes a heating pipe 24 fixed on the inner wall of the reaction kettle 5, a protective cover 25 is arranged outside the heating pipe 24, the protective cover 25 is fixed on the inner wall of the reaction kettle 5, and the cleaning scraper 18 is abutted against the protective cover 25.

Specifically, 5 lower extremes of reation kettle are provided with sampling device 26, and sampling device 26 is including the sampling tube 27 with 5 inner chambers of reation kettle intercommunication, and the sampling tube 27 outer wall is provided with first control valve 28, and sampling tube 27 is connected with seal box 29, has seted up chamber door 30 on the seal box 29, and seal box 29 is connected with vacuum pump 31 through the back flow, back flow and 5 inner chambers of reation kettle intercommunication, and the back flow is connected with second check valve 32. The door 30 is opened, the carbon nanotubes in the sealing box 29 are taken out, and the carbon nanotubes are detected to determine the purity of the carbon nanotubes.

Specifically, reaction kettle 5 is provided with a fixed ring 33 fixed in the inner cavity of reaction kettle 5, and fixed ring 33 is rotatably connected with stirring shaft 11. The lower end of the stirring shaft 11 is supported by the fixing ring 33, so that the stirring shaft 11 is prevented from deflecting.

Specifically, the top of the fixing ring 33 is provided with a connecting sleeve 34, the connecting sleeve 34 and the stirring shaft 11 are coaxially arranged, the outer wall of the connecting sleeve is provided with a sliding groove 35, the sliding groove 35 is slidably connected with a sliding block 36, and the sliding block 36 is fixedly connected with the cleaning support 17. The slider 36 is connected to the cleaning support 17 to increase the stability of the lower end of the cleaning support 17. The lower end of the cleaning support 17 is prevented from being distorted and deformed during the operation of the cleaning support 17.

Specifically, the tail gas treatment device 9 includes a tail gas treatment tank 37 and an aspirator pump 38 communicated with the exhaust pipe 7, the aspirator pump 38 is communicated with an inner cavity of the tail gas treatment tank 37, the tail gas treatment tank 37 is provided with a discharge port 39, an air inlet 40 and an iodine vapor outlet 41, oxygen enters the inner cavity of the tail gas treatment tank 37 through the air inlet 40, the iodine vapor outlet 41 is connected with a second control valve 42, and the second control valve 42 is connected with a temporary storage tank 43. The outer wall of the tail gas treatment tank 37 is provided with a heat preservation device, and the high temperature in the tail gas treatment tank 37 is kept through the heat preservation device. The off-gas discharged from the reaction vessel 5 is treated by the off-gas treatment tank 37. After treatment, the iodine vapor produced enters the temporary storage tank 43, while the remaining reaction products are discharged from the inner cavity of the tail gas treatment tank 37 through the discharge port 39.

Specifically, the temporary storage tank 43 is communicated with the iodine vapor feeding pipe 1. The temporary storage tank 43 is communicated with the iodine vapor feeding pipe 1, so that the repeated utilization rate of the iodine vapor is improved.

Specifically, the discharge port 39 is provided with a screw shaft 44. The screw shaft 44 is rotated by the second motor. Clogging of the discharge port 39 is prevented by the screw shaft 44.

One specific application of this embodiment is: in the mixer 3, the iodine vapor and the carbon nanotubes are mixed. After the iodine vapor and the carbon nanotubes are mixed, the mixed iodine vapor and carbon nanotubes are output to a reaction kettle 5 through a distributor 4. When one of the reaction vessels 5 is filled with the mixed iodine vapor and carbon nanotubes, the distributor 4 controls the injection of the iodine vapor and carbon nanotubes into the other reaction vessel 5. In reaction vessel 5, the iodine vapor reacts with the iron entrained in the carbon nanotubes. And iodide produced by the iodine vapor and iron is sublimated into gas at high temperature. The gas is drawn into a tail gas treatment tank 37 by a suction pump 38. At the same time, oxygen is injected into the tail gas treatment tank 37. Oxygen reacts with iodide at high temperature to displace the iodine. And iodine sublimes into gas at high temperature. The iodine vapor enters the temporary storage tank 43, and the rest of the reaction products are discharged out of the inner cavity of the tail gas treatment tank 37 through a discharge port 39.

In the carbon nanotube purification process, the stirring shaft 11 rotates to disturb the iodine vapor and the carbon nanotubes in the reaction kettle 5, so that the iodine vapor and the carbon nanotubes are prevented from being settled in the reaction kettle 5, the iodine vapor and the carbon nanotubes are not uniformly mixed, and the purification effect of the carbon nanotubes is further influenced. The sliding sleeve 13 rotates synchronously with the stirring shaft 11 while the stirring shaft 11 rotates. The rotation of the sliding sleeve 13 forces the mounting sleeve 15 to slide up and down along the sliding rod 16, which in turn drives the cleaning bracket 17 and the cleaning blade 18 to move up and down. Foreign substances on the outer wall of the shield cover 25 are scraped off by the cleaning blade 18. The influence on the heat transfer efficiency of the heating pipe 24 due to the foreign matters attached to the outside of the protective cover 25 is avoided, thereby increasing the energy loss of the equipment.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides an ultra-high temperature continuous carbon nanotube purification equipment, includes iodine vapor inlet pipe (1) and carbon nanotube inlet pipe (2), its characterized in that: the device comprises an iodine vapor feeding pipe (1), a carbon nanotube feeding pipe (2), a mixer (3), a distributor (4), three reaction kettles (5) for purifying carbon nanotubes, a first feeding pipe (6) and an exhaust pipe (7) which are connected to the mixer (3), a discharging pipe (8) which is arranged at the lower end of each reaction kettle (5), a tail gas treatment device (9) which is connected to each reaction kettle (5), a heating device (10) and a stirring shaft (11) which are arranged in the inner cavity of each reaction kettle (5), and a cleaning device (12) for cleaning the heating device (10) which is arranged on the outer wall of each stirring shaft (11);

cleaning device (12) is including fixing slip cap (13) at (mixing) shaft (11) outer wall, two spiral recess (14) have been seted up to slip cap (13) outer wall, two the peak intercommunication of spiral recess (14), two the minimum intercommunication of spiral recess (14), spiral recess (14) sliding connection has installation cover (15), reation kettle (5) roof is provided with slide bar (16), slide bar (16) and installation cover (15) sliding connection, installation cover (15) outer wall is provided with clean support (17), clean support (17) outer wall is provided with a plurality of clean scraper blade (18), clean scraper blade (18) and heating device (10) butt.

2. The purification equipment of the ultra-high temperature continuous carbon nano tube of claim 1, which is characterized in that: the reaction kettle is characterized in that a water spraying device (19) is arranged at the upper end of the reaction kettle (5), the water spraying device (19) comprises a water distribution block (20) fixed at the top of the reaction kettle (5), the water distribution block (20) is communicated with a water pipe, a plurality of water outlet pipes (21) are arranged on the water distribution block (20), each water outlet pipe (21) is connected with a first one-way valve (22), and the first one-way valves (22) are connected with nozzles (23) used for spraying water to the inner cavity of the reaction kettle (5).

3. The purification equipment of the ultra-high temperature continuous carbon nano tube of claim 1, which is characterized in that: heating device (10) is including fixing heating pipe (24) at reation kettle (5) inner wall, heating pipe (24) outside is provided with protection casing (25), protection casing (25) are fixed at reation kettle (5) inner wall, cleaning scraper blade (18) and protection casing (25) butt.

4. The purification equipment of the ultra-high temperature continuous carbon nano tube of claim 1, which is characterized in that: reation kettle (5) lower extreme is provided with sampling device (26), sampling device (26) including sampling tube (27) with reation kettle (5) inner chamber intercommunication, sampling tube (27) outer wall is provided with first control valve (28), sampling tube (27) are connected with seal box (29), chamber door (30) have been seted up on seal box (29), seal box (29) are connected with vacuum pump (31) through the back flow, back flow and reation kettle (5) inner chamber intercommunication, the back flow is connected with second check valve (32).

5. The purification equipment of the ultra-high temperature continuous carbon nano tube of claim 1, which is characterized in that: reaction kettle (5) is provided with fixed ring (33) of fixing at reaction kettle (5) inner chamber, fixed ring (33) is connected with (mixing) shaft (11) rotation.

6. The purification equipment of the ultra-high temperature continuous carbon nano tube of claim 5, which is characterized in that: the top of the fixing ring (33) is provided with a connecting sleeve (34), the connecting sleeve (34) and the stirring shaft (11) are coaxially arranged, the outer wall of the connecting sleeve is provided with a sliding groove (35), the sliding groove (35) is connected with a sliding block (36) in a sliding manner, and the sliding block (36) is fixedly connected with the cleaning support (17).

7. The purification equipment of the ultra-high temperature continuous carbon nano tube of claim 1, which is characterized in that: tail gas processing apparatus (9) including tail gas treatment tank (37) and with aspirator pump (38) of blast pipe (7) intercommunication, aspirator pump (38) and tail gas treatment tank (37) inner chamber intercommunication, tail gas treatment tank (37) are provided with bin outlet (39), air inlet (40) and iodine vapor outlet (41), iodine vapor outlet (41) are connected with second control valve (42), second control valve (42) are connected with temporary storage tank (43).

8. The purification equipment of the ultra-high temperature continuous carbon nano tube of claim 7, which is characterized in that: the temporary storage tank (43) is communicated with the iodine vapor feeding pipe (1).

9. The purification equipment of the ultra-high temperature continuous carbon nano tube of claim 8, which is characterized in that: the discharge opening (39) is provided with a screw shaft (44).