CN211872165U - Reaction device for quickly producing carbon nano tube fibers - Google Patents
Reaction device for quickly producing carbon nano tube fibers Download PDFInfo
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- CN211872165U CN211872165U CN201922228248.4U CN201922228248U CN211872165U CN 211872165 U CN211872165 U CN 211872165U CN 201922228248 U CN201922228248 U CN 201922228248U CN 211872165 U CN211872165 U CN 211872165U
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Abstract
The utility model provides a reaction device for quickly producing carbon nanotube fibers, in particular to the technical field of carbon nanotube fiber production devices, which comprises a feed liquid conveying system, a gas pressurization system, a high-speed centrifugal atomizer and a CVD reactor; the high-speed centrifugal atomizer comprises a high-speed motor and a high-speed centrifugal atomizing disk, the high-speed centrifugal atomizing disk is arranged at the front end of a spindle of the high-speed motor and is positioned in the CVD reactor, and a plurality of liquid outlet holes are formed in the high-speed centrifugal atomizing disk at equal intervals in the circumferential direction; the feed liquid conveying system is used for conveying feed liquid into the high-speed centrifugal atomizing disc; and the gas pressurization system conveys high-pressure carrier gas to the position right above the high-speed centrifugal atomizing disc, and the high-pressure carrier gas carries atomized feed liquid to enter a reaction chamber of the CVD reactor. The utility model discloses can solve the CVD legal system and prepare carbon nanotube fibre in-process, the specific surface area of column feed liquid is little, the insufficient problem of feed liquid reaction.
Description
Technical Field
The utility model belongs to the technical field of carbon nanotube fiber apparatus for producing, concretely relates to a reaction unit for produce carbon nanotube fibre fast.
Background
The carbon nanotube fiber has the characteristics of high specific modulus, high specific strength, high conductivity, low density and the like, and has important application prospects in the fields of aerospace, national defense and military, electrode materials and the like. The CVD method for preparing the carbon nanotube fiber has simple operation and low cost, and is the first choice for industrially producing the carbon nanotube fiber. At present, the feed liquid for preparing the carbon nano tube fiber by the CVD method is mainly conveyed by a common pipeline, the conveyed feed liquid is in a liquid column shape, the specific surface area is small, evaporation of the feed liquid and subsequent full reaction are not facilitated, partial feed liquid is insufficiently reacted to form impurities, and the quality of the carbon nano tube fiber is seriously influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a reaction unit for producing carbon nanotube fibre fast sets up high-speed motor and high-speed centrifugal atomizing disk, solves the CVD legal system and prepares carbon nanotube fibre in-process, and the specific surface area of column feed liquid is little, and the insufficient problem of feed liquid reaction.
The technical scheme is as follows:
a reaction device for rapidly producing carbon nanotube fibers comprises a feed liquid conveying system, a gas pressurization system, a high-speed centrifugal atomizer and a CVD reactor; the high-speed centrifugal atomizer comprises a high-speed motor and a high-speed centrifugal atomizing disk, the high-speed centrifugal atomizing disk is arranged on a main shaft at the front end of the high-speed motor and is positioned in the CVD reactor, and a plurality of liquid outlet holes are formed in the high-speed centrifugal atomizing disk at equal intervals in the circumferential direction; the feed liquid conveying system is used for conveying feed liquid into the high-speed centrifugal atomizing disc; and the gas pressurization system conveys high-pressure carrier gas to the position right above the high-speed centrifugal atomizing disc, and the high-pressure carrier gas carries atomized feed liquid to enter a reaction chamber of the CVD reactor. The high-speed centrifugal atomizer atomizes feed liquid into uniform and fine liquid drops under the action of high-speed centrifugation, the gas pressurization system conveys high-pressure carrier gas to the position right above the high-speed centrifugal atomizing disc, the atomized feed liquid is carried into the CVD reactor, and the CVD reactor converts the atomized feed liquid into a carbon nano tube bundle under certain production conditions.
Preferably, the feed liquid conveying system comprises a feed liquid pump, a feed liquid tank and a liquid conveying pipeline, the feed liquid pump is arranged on the liquid conveying pipeline, one end of the liquid conveying pipeline is connected with the feed liquid tank, the other end of the liquid conveying pipeline is communicated with a liquid guide pipe, the liquid guide pipe is vertically distributed, the lower end of the liquid guide pipe is communicated with the high-speed centrifugal atomizing disc, and a main shaft of the high-speed motor penetrates through the liquid guide pipe to be connected with the high-speed centrifugal atomizing disc. The arrangement can ensure that the liquid in the liquid conveying pipeline is conveyed into the high-speed centrifugal atomizing disk through the liquid guide pipe, and the main shaft of the motor is not influenced to drive the high-speed centrifugal atomizing disk to rotate.
Preferably, the gas pressurization system comprises a gas storage tank, a gas pressurization pump, a gas transmission pipeline and a gas buffering disc, the gas transmission pipeline is provided with the gas pressurization pump, one end of the gas transmission pipeline is communicated with the gas storage tank, the other end of the gas transmission pipeline is communicated with the gas buffering disc, the gas buffering disc is provided with a plurality of gas outlets, and the gas buffering disc is arranged on the upper portion in the CVD reactor.
Preferably, the gas booster pump can improve carrier gas pressure to 5~6 MPa, gas buffering dish circumference evenly sets up a plurality of ventholes, every the venthole is followed the radial distribution of buffering dish. The high-pressure gas with the pressure of 5-6 MPa can blow fine liquid drops atomized by the high-speed centrifugal atomizing disc to the reaction chamber, and the fine liquid drops cannot be accumulated on the inner wall of the buffer chamber.
Preferably, the CVD reactor includes a buffer chamber, a reaction chamber, and a resistance furnace, a lower end of the buffer chamber communicates with an upper end of the reaction chamber, and the resistance furnace is located outside the reaction chamber. The resistance furnace is used for providing a heat source for the reaction chamber, the small liquid drops enter the middle lower part of the buffer chamber along with high-pressure carrier gas, the specific surface area of the atomized small liquid drops is very large, the atomized small liquid drops are quickly vaporized at the relatively high temperature of the middle lower part of the buffer chamber, and then the vaporized materials form a carbon nano tube bundle in the reaction chamber of a high-temperature area. The carbon nanotube bundle is carried out of the reaction chamber by the carrier gas and spun into carbon nanotube fibers by twisting.
Preferably, the gas buffer disc is arranged in the buffer chamber, the gas buffer disc is fixed on the liquid guide pipe, and the gas buffer disc is positioned right above the high-speed centrifugal atomizing disc.
Preferably, the high-speed centrifugal atomizing disk is located the well upper portion of buffer chamber, the high-speed centrifugal atomizing disk is cylindrical, the side equidistance circumference of high-speed centrifugal atomizing disk is equipped with a plurality of groups go out the liquid hole, every group go out the liquid hole by a plurality of edges high-speed centrifugal atomizing disk axial distribution go out the liquid hole and constitute.
Preferably, the buffer chamber is in a circular truncated cone shape, the upper end of the buffer chamber is larger than the lower end of the buffer chamber, the resistance furnace is in a cylindrical shape, and the inner diameter of the lower end of the buffer chamber is the same as that of the reaction chamber. The arrangement can prevent small liquid drops atomized by the high-speed centrifugal atomizing disk from being thrown onto the inner wall of the buffer chamber and can also prevent the accumulation of materials at the contact part of the buffer chamber and the reaction chamber.
Preferably, the top cover of the high-speed centrifugal atomizing disc is provided with an opening, and the opening is connected with the lower end of the liquid guide pipe. An opening is provided for receiving the feed liquid to be atomized.
Preferably, the maximum rotating speed of the high-speed motor is not lower than 25000 rpm, and the operating rotating speed of the high-speed motor is 6000-25000 rpm.
The utility model has the advantages that:
(1) the feed liquid is dispersed into fine liquid drops through the atomization effect of the high-speed centrifugal atomizing disc, the specific surface area of the feed liquid is increased, the feed liquid is rapidly vaporized at the relatively high temperature of the middle lower part of the buffer chamber, and then the vaporized feed liquid forms a carbon nanotube bundle in a reaction chamber of a high-temperature area, so that the problem that impurities generated by incomplete reaction of the feed liquid reduce the quality of carbon nanotube fibers is solved.
(2) The use of high-pressure carrier gas can spray the feed liquid atomized by the high-speed centrifugal atomizing disk to the middle lower part of the buffer chamber, so that the feed liquid is prevented from accumulating on the inner wall of the buffer chamber.
(3) The rapid and uniform vaporization of the feed liquid and the use of high-pressure carrier gas greatly improve the production efficiency of the carbon nanotube fiber.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of a reaction apparatus for rapidly producing carbon nanotube fibers;
FIG. 2 is a schematic diagram of a portion of the fine structure of a high-speed centrifugal atomizer;
FIG. 3 is a longitudinal cross-sectional view of a CVD reactor.
In the figure: 1. a gas storage tank; 2. a gas booster pump; 3. a gas pipeline; 4. a high-speed motor; 5. a fluid delivery conduit; 6. a feed liquid pump; 7. a feed liquid tank; 8. a buffer chamber; 9. a resistance furnace; 10. a reaction chamber; 101. a catheter; 11. a main shaft; 12. a gas cushion pan; 13. an air outlet; 14. a high-speed centrifugal atomizing disc; 15. a liquid outlet hole; 16. the rod is heated.
Detailed Description
As shown in fig. 1-3, a reaction apparatus for rapidly producing carbon nanotube fibers comprises a feed liquid conveying system, a gas pressurizing system, a high-speed centrifugal atomizer and a CVD reactor; the high-speed centrifugal atomizer comprises a high-speed motor 4 and a high-speed centrifugal atomizing disk 14, wherein the high-speed centrifugal atomizing disk 14 is arranged at the front end of a main shaft 11 of the high-speed motor 4. The feed liquid conveying system comprises a feed liquid pump 6, a feed liquid tank 7 and a liquid conveying pipeline 5, the feed liquid pump 6 is arranged on the liquid conveying pipeline 5, one end of the liquid conveying pipeline 5 is connected with the feed liquid tank 7, the other end of the liquid conveying pipeline 5 is communicated with a liquid guide pipe 101, the liquid guide pipe 101 is vertically distributed, the lower end of the liquid guide pipe 101 is communicated with a high-speed centrifugal atomizing disc 14, and a main shaft 11 of a high-speed motor 4 penetrates through the liquid guide pipe 101 to. The gas pressurization system comprises a gas storage tank 1, a gas booster pump 2, a gas transmission pipeline 3 and a gas buffer disc 12, wherein the gas booster pump 2 is arranged on the gas transmission pipeline 3, one end of the gas transmission pipeline 3 is communicated with the gas storage tank 1, and the other end of the gas transmission pipeline 3 is communicated with the gas buffer disc 12. The CVD reactor comprises a buffer chamber 8, a reaction chamber 10 and a resistance furnace 9, wherein the lower end of the buffer chamber 8 is communicated with the upper end of the reaction chamber 10, the resistance furnace 9 is positioned outside the reaction chamber 10, and a plurality of heating rods 16 are arranged in the resistance furnace 9 and used for heating the reaction chamber 10.
Wherein, the gas buffer disk 12 is arranged inside the buffer chamber 8 and is fixed on the liquid guide pipe 101 in a detachable way, and the gas buffer disk 12 is positioned right above the high-speed centrifugal atomizing disk 14. The high-speed centrifugal atomizing disk 14 is positioned at the middle upper part of the buffer chamber 8, the high-speed centrifugal atomizing disk 14 is cylindrical, a plurality of groups of liquid outlet holes 15 are circumferentially arranged on the side surface of the high-speed centrifugal atomizing disk 14 at equal intervals, and each group of liquid outlet holes 15 consists of a plurality of liquid outlet holes 15 which are axially distributed along the high-speed centrifugal atomizing disk 14. The top cover of the high-speed centrifugal atomizing disk 14 is provided with an opening, and the opening is connected with the lower end of the liquid guide pipe 101. An opening is provided for receiving the feed liquid to be atomized.
Specifically, the buffer chamber 8 is in a circular truncated cone shape, the upper end of the buffer chamber 8 is larger than the lower end of the buffer chamber, the resistance furnace 9 is in a cylindrical shape, and the inner diameter of the lower end of the buffer chamber 8 is the same as that of the reaction chamber 10. The arrangement can prevent small liquid drops atomized by the high-speed centrifugal atomizing disk from being thrown onto the inner wall of the buffer chamber 8, and can also prevent the accumulation of materials at the contact part of the buffer chamber 8 and the reaction chamber 10.
In this embodiment, the maximum rotation speed of the high-speed motor 4 is not lower than 25000 rpm, and the operation rotation speed of the high-speed motor 4 is set to 6000 and 25000 rpm. The gas booster pump 2 can improve the pressure of carrier gas to 5-6 MPa, the gas buffer disc 12 is evenly provided with a plurality of gas outlet holes 14 in the circumferential direction, and each gas outlet hole 14 is distributed along the radial direction of the buffer disc 12. The high-pressure gas with the pressure of 5-6 MPa can blow the fine liquid drops atomized by the high-speed centrifugal atomizing disc 14 to the reaction chamber 10, and the fine liquid drops are not accumulated on the inner wall of the buffer chamber 8.
Principle of
A feed liquid pump 6 is adopted to convey reaction liquid in a feed liquid tank 7 to a high-speed centrifugal atomizing disc 14 through a liquid conveying pipeline 5, the high-speed centrifugal atomizing disc 14 rotates at a high speed under the driving of a high-speed motor 4, and feed liquid is dispersed into fine liquid drops through the atomizing effect of the high-speed centrifugal atomizing disc 14, so that the specific surface area of the feed liquid is increased.
The method comprises the steps of pressurizing gas in a gas storage tank 1 to 5-6 MPa by a gas booster pump 2 through a gas transmission pipeline 3, then spraying the gas from the top of a buffer chamber 8 through a pipeline, rapidly bringing atomized fine liquid drops into the middle lower part of the buffer chamber by high-pressure carrier gas, rapidly vaporizing the atomized small liquid drops at a relatively high temperature in the middle lower part of the buffer chamber, forming a carbon nanotube bundle in a reaction chamber 10 of a high-temperature region by the vaporized material, carrying the carbon nanotube bundle out of the reaction chamber 10 by the carrier gas, and spinning the carbon nanotube fiber by using a twisting mode.
Note that, in order to facilitate observation of the relationship between the reaction chamber 10, the buffer chamber 8, and the resistance furnace 9, the high-speed centrifugal atomizing disk 14, the gas buffer disk 12, and the like are not shown in fig. 3.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (10)
1. A reaction device for rapidly producing carbon nanotube fibers is characterized by comprising a feed liquid conveying system, a gas pressurizing system, a high-speed centrifugal atomizer and a CVD reactor;
the high-speed centrifugal atomizer comprises a high-speed motor and a high-speed centrifugal atomizing disk, the high-speed centrifugal atomizing disk is arranged on a main shaft at the front end of the high-speed motor and is positioned in the CVD reactor, and a plurality of liquid outlet holes are formed in the high-speed centrifugal atomizing disk at equal intervals in the circumferential direction;
the feed liquid conveying system is used for conveying feed liquid into the high-speed centrifugal atomizing disc;
and the gas pressurization system conveys high-pressure carrier gas to the position right above the high-speed centrifugal atomizing disc, and the high-pressure carrier gas carries atomized feed liquid to enter a reaction chamber of the CVD reactor.
2. The reaction device for rapidly producing carbon nanotube fibers according to claim 1, wherein the feed liquid delivery system comprises a feed liquid pump, a feed liquid tank and a liquid delivery pipeline, the feed liquid pump is disposed on the liquid delivery pipeline, one end of the liquid delivery pipeline is connected to the feed liquid tank, the other end of the liquid delivery pipeline is communicated with a liquid guide tube, the liquid guide tube is vertically distributed, the lower end of the liquid guide tube is communicated with the high-speed centrifugal atomizing disk, and a main shaft of the high-speed motor penetrates through the liquid guide tube to be connected with the high-speed centrifugal atomizing disk.
3. The reaction device as claimed in claim 2, wherein the gas pressurization system comprises a gas storage tank, a gas pressurization pump, a gas transmission pipeline and a gas buffer disk, the gas transmission pipeline is provided with the gas pressurization pump, one end of the gas transmission pipeline is communicated with the gas storage tank, the other end of the gas transmission pipeline is communicated with the gas buffer disk, the gas buffer disk is provided with a plurality of gas outlets, and the gas buffer disk is arranged at the upper part in the CVD reactor.
4. The reaction device for rapidly producing carbon nanotube fibers as recited in claim 3, wherein the gas booster pump can increase the pressure of the carrier gas to 5-6 MPa, and a plurality of gas outlets are uniformly arranged on the circumference of the gas buffer disk, and each gas outlet is radially distributed along the buffer disk.
5. The reaction apparatus for rapidly manufacturing carbon nanotube fiber according to claim 3, wherein the CVD reactor comprises a buffer chamber, a reaction chamber, and a resistance furnace, a lower end of the buffer chamber is communicated with an upper end of the reaction chamber, and the resistance furnace is located outside the reaction chamber.
6. The reaction device for rapidly producing carbon nanotube fibers according to claim 5, wherein the gas buffer disk is fixed on the liquid guide tube, and the gas buffer disk is positioned right above the high-speed centrifugal atomizing disk.
7. The reaction device for rapidly producing carbon nanotube fibers as recited in claim 5, wherein said high-speed centrifugal atomizing disk is located at the middle upper portion of said buffer chamber, said high-speed centrifugal atomizing disk is cylindrical, a plurality of sets of said liquid outlet holes are circumferentially arranged on the side surface of said high-speed centrifugal atomizing disk at equal intervals, and each set of said liquid outlet holes is composed of a plurality of said liquid outlet holes axially distributed along said high-speed centrifugal atomizing disk.
8. The reaction apparatus for rapidly manufacturing carbon nanotube fiber according to claim 5, wherein the buffer chamber has a truncated cone shape, the upper end of the buffer chamber is larger than the lower end, the resistance furnace has a cylindrical shape, and the inner diameter of the lower end of the buffer chamber is the same as the inner diameter of the reaction chamber.
9. The reaction device for rapidly producing carbon nanotube fibers as defined in claim 2, wherein the top cover of the high-speed centrifugal atomizing disk is provided with an opening, and the opening is connected with the lower end of the liquid guide tube.
10. The reaction apparatus for rapidly producing carbon nanotube fibers as set forth in any one of claims 1 to 9, wherein the maximum rotation speed of the high speed motor is not lower than 25000 rpm, and the operating rotation speed of the high speed motor is set to 6000-25000 rpm.
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| CN201922228248.4U CN211872165U (en) | 2019-12-13 | 2019-12-13 | Reaction device for quickly producing carbon nano tube fibers |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112792989A (en) * | 2021-02-06 | 2021-05-14 | 德阳优博络客新型建材有限公司 | Aerated concrete slab solid waste recovery system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112792989A (en) * | 2021-02-06 | 2021-05-14 | 德阳优博络客新型建材有限公司 | Aerated concrete slab solid waste recovery system |
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