CN218422689U - Carbon nano tube horizontal reactor with hollow stirring shaft - Google Patents
Carbon nano tube horizontal reactor with hollow stirring shaft Download PDFInfo
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- CN218422689U CN218422689U CN202222784340.0U CN202222784340U CN218422689U CN 218422689 U CN218422689 U CN 218422689U CN 202222784340 U CN202222784340 U CN 202222784340U CN 218422689 U CN218422689 U CN 218422689U
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Abstract
The utility model relates to a carbon nanotube horizontal reactor with a hollow stirring shaft, which comprises a horizontal reactor, a horizontal stirrer, a heater, a catalyst tube, a tail gas tube, an air inlet tube and a discharge tube, wherein the stirring shaft of the horizontal stirrer comprises a hollow stirring shaft and a solid stirring shaft, one end of the solid stirring shaft is connected with a driving motor outside the horizontal reactor, the other end of the solid stirring shaft extends into the horizontal reactor and can be detachably connected with one end of the hollow stirring shaft, and both ends of the hollow stirring shaft are sealed; when the hollow stirring shaft is arranged in the horizontal reactor, the hollow stirring shaft is superposed with the central axis of the horizontal reactor; the hollow stirring shaft is provided with at least one vent, and when the hollow stirring shaft is arranged outside the horizontal reactor, the vent is detachably connected with an air pump or an inflator pump and is used for pumping air in the hollow stirring shaft away or replacing the air with inert gas; the heater is arranged on the outer side of the horizontal reactor, the catalyst pipe and the gas inlet pipe are connected with the front end of the horizontal reactor, and the tail gas pipe and the discharge pipe are connected with the rear end of the horizontal reactor.
Description
Technical Field
The utility model belongs to the technical field of carbon nanotube production facility, concretely relates to carbon nanotube horizontal reactor with hollow mixing shaft.
Background
With the rapid development of the nano material technology, the nano material has good performance and is gradually applied to a plurality of fields such as electronics, communication, electric power, chemical engineering, energy, medical treatment and the like. The carbon nanotube is a one-dimensional nano material, the radial dimension of the carbon nanotube is nano magnitude, the axial dimension of the carbon nanotube is micron magnitude, and the carbon nanotube mainly comprises carbon atoms which are arranged in a hexagon shape to form a coaxial circular tube with several layers to dozens of layers. The carbon nano tube has light weight, perfect connection of the hexagonal structure, a plurality of abnormal mechanical, electrical and chemical properties and very wide application prospect.
The market demand of carbon nanotubes is getting larger and larger, and the industrial mass production is gradually going to be carried out. At present, a vertical reactor is widely used for producing carbon nanotubes, but the volume of the reactor is always limited in a smaller size range due to the limitation of reaction conditions, which directly results in smaller yield of the carbon nanotubes. Currently, the art has attempted to use horizontal reactors to expand the yield of carbon nanotubes.
However, the horizontal agitator used in conjunction with the horizontal reactor is different from the conventional vertical agitator, in order to match the characteristic of large output of the horizontal reactor, the agitation capacity of the horizontal agitator needs to be synchronously improved, and the conventional agitator with large agitation capacity has an agitator shaft with large weight, so that the weight born by the seals at the two ends of the agitator shaft is also large, and the shaft seals at the two ends bear large weight, which is very easy to damage. In addition, the processing precision and concentricity of the shaft seal are extremely high, and the damage of the shaft seal can be caused by slight vibration or jumping of the stirring shaft, so that the air leakage of the horizontal reactor is caused, and even the danger of explosion is caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a carbon nanotube horizontal reactor with hollow mixing shaft, the technical problem of solution is that horizontal agitator's (mixing) shaft dead weight is great, and its slight vibrations will lead to the bearing seal leakproofness at (mixing) shaft both ends not good.
The carbon nano tube horizontal reactor with the hollow stirring shaft comprises a horizontal reactor, a horizontal stirrer, a heater, a catalyst pipe, a tail gas pipe, a gas inlet pipe and a discharge pipe, wherein the stirring shaft of the horizontal stirrer comprises a hollow stirring shaft and a solid stirring shaft, one end of the solid stirring shaft is connected with a driving motor outside the horizontal reactor, the other end of the solid stirring shaft extends into the horizontal reactor and is detachably connected with one end of the hollow stirring shaft, and two ends of the hollow stirring shaft are sealed;
when the hollow stirring shaft is arranged in the horizontal reactor, the hollow stirring shaft is superposed with the central axis of the horizontal reactor;
the hollow stirring shaft is provided with at least one vent, and when the hollow stirring shaft is arranged outside the horizontal reactor, the vent is detachably connected with an air pump or an inflator pump and is used for pumping away air in the hollow stirring shaft or replacing the air in the hollow stirring shaft with inert gas;
the heater is arranged on the outer side of the horizontal reactor and used for heating the horizontal reactor; the catalyst pipe and the gas inlet pipe are connected with the front end of the horizontal reactor, and the tail gas pipe and the discharge pipe are connected with the rear end of the horizontal reactor.
Optionally, a vent is arranged on the hollow stirring shaft, and the vent is detachably connected with an air pump and used for pumping away air in the hollow stirring shaft.
Optionally, two air vents are arranged on the hollow stirring shaft, one air vent is detachably connected with an inflator pump and used for filling inert gas into the hollow stirring shaft, and the other air vent is used for opening a control valve to release air when filling the inert gas.
Optionally, the outer diameter of the hollow stirring shaft is greater than 80mm, the inner diameter of the hollow stirring shaft is not less than 50mm, the length of the hollow stirring shaft is 3-20m, and the inner diameter of the horizontal reactor is greater than 500mm.
Optionally, the horizontal reactor sequentially comprises a first low-temperature zone, a high-temperature reaction zone and a second low-temperature zone from front to back, a first baffle is arranged between the first low-temperature zone and the high-temperature reaction zone, a second baffle is arranged between the second low-temperature zone and the high-temperature reaction zone, and the first baffle and the second baffle are respectively used for blocking heat of the high-temperature reaction zone from diffusing to the first low-temperature zone and the second low-temperature zone.
Optionally, both ends of the horizontal reactor are provided with detachable end covers, a plurality of sealing rings are arranged at the joints of the end covers and the horizontal reactor, and shaft seals are respectively arranged on the end covers at both ends of the horizontal reactor, so that the hollow stirring shaft can conveniently penetrate through the end covers and rotate.
Optionally, the upper portion, the center, and the lower portion of the first baffle are respectively provided with a through hole, which is used for the catalyst tube, the hollow stirring shaft, and the air inlet tube to penetrate through the first baffle, the catalyst tube, the hollow stirring shaft, and the air inlet tube penetrate through the front end of the horizontal reactor, sequentially penetrate through the through holes of the first low-temperature region and the first baffle, and then extend into the high-temperature reaction region, the catalyst tube and the air inlet tube respectively provide catalyst and carbon source raw material gas for the high-temperature reaction region, and the catalyst tube and the air inlet tube react at high temperature of the high-temperature reaction region to generate carbon nanotubes.
Optionally, the upper portion, the center, and the lower portion of the second baffle plate are respectively provided with a through hole, and the through holes are respectively used for a tail gas pipe, a hollow stirring shaft, and a discharge pipe to penetrate through the second baffle plate, the tail gas pipe and the discharge pipe penetrate through the rear end of the horizontal reactor, sequentially penetrate through the through holes of the second low-temperature region and the second baffle plate, and then extend into the high-temperature reaction region, and the tail gas pipe and the discharge pipe are respectively used for outputting tail gas and generated carbon nanotubes after reaction in the high-temperature reaction region.
Optionally, the through holes in the centers of the first baffle and the second baffle correspond to each other and correspond to shaft seals on end covers at two ends of the horizontal reactor, so that the straight hollow stirring shaft can penetrate through the end cover, the first baffle and the second baffle of the horizontal reactor;
the through holes at the centers of the first baffle plate and the second baffle plate are respectively provided with an auxiliary shaft seal, so that the hollow stirring shaft can freely rotate when passing through the first baffle plate and the second baffle plate.
Optionally, the first low-temperature zone and the second low-temperature zone are respectively provided with an exhaust pipe for exhausting expanded air when the gas in the two low-temperature zones is heated in the high-temperature reaction zone, so as to ensure the safety of the horizontal reactor.
The carbon nano tube horizontal reactor with the hollow stirring shaft has the following beneficial effects:
(1) On the basis of keeping the stirring capacity, the hollow stirring shaft effectively reduces the self weight of the stirring shaft and the bearing pressure of shaft seals at two ends of the horizontal reactor;
(2) For the large horizontal reactor and the large horizontal stirrer of the utility model, the through holes at the two ends of the horizontal reactor, the centers of the first baffle and the second baffle provide four supporting points for the hollow stirring shaft, and are all provided with shaft seals, so that the stability of the hollow stirring shaft can be increased, and the vibration of the hollow stirring shaft can be reduced;
(3) The auxiliary shaft seals at the two baffles are used as first sealing barriers to prevent gas in the high-temperature reaction zone from entering the two low-temperature zones, and the shaft seals at the two end covers are used as second sealing barriers to prevent a small amount of gas in the two low-temperature zones from leaking outside;
(4) The first baffle and the second baffle can prevent the catalyst from falling into the front and the rear low-temperature regions, so that the utilization efficiency of the catalyst is ensured, and meanwhile, high-temperature gas in the high-temperature reaction region is prevented from entering the two low-temperature regions, so that the heat diffusion is reduced; the two low-temperature regions can reduce the temperature of the end cover, improve the sealing environment of the end cover and prolong the service life of the end cover.
Drawings
FIG. 1 is a schematic structural view of a carbon nanotube horizontal reactor with a hollow stirring shaft;
FIG. 2 is a schematic diagram of one form of hollow agitator shaft;
FIG. 3 is a schematic view of another form of hollow stirring shaft.
In the attached figure, 1-horizontal reactor, 2-hollow stirring shaft, 3-heater, 4-catalyst pipe, 5-tail gas pipe, 6-gas inlet pipe, 7-discharge pipe, 8-gas outlet pipe, 9-first low-temperature zone, 10-high-temperature reaction zone, 11-second low-temperature zone, 12-first baffle, 13-second baffle, 14-solid stirring shaft and 15-vent.
Detailed Description
The carbon nanotube horizontal reactor with the hollow stirring shaft provided by the embodiment comprises a horizontal reactor 1, a horizontal stirrer, a heater 3, a catalyst pipe 4, an exhaust pipe 5, an air inlet pipe 6 and a discharge pipe 7, as shown in fig. 1, wherein the stirring shaft of the horizontal stirrer comprises a hollow stirring shaft 2 and a solid stirring shaft 14, one end of the solid stirring shaft 14 is connected with a driving motor outside the horizontal reactor 1, the other end of the solid stirring shaft is connected with one end of the hollow stirring shaft 2, and both ends of the hollow stirring shaft 2 are closed;
when the hollow stirring shaft 2 is arranged inside the horizontal reactor 1, the hollow stirring shaft is superposed with the central axis of the horizontal reactor 1;
at least one vent 15 is arranged on the hollow stirring shaft 2, the vent 15 is provided with a control valve, or the vent 15 is plugged when the vent 15 is not used; when the hollow stirring shaft 2 is arranged outside the horizontal reactor 1, the air vent 15 is detachably connected with an air pump or an inflator pump and is used for pumping away air in the hollow stirring shaft 2 or replacing the air in the hollow stirring shaft 2 with inert gas;
the heater 3 is arranged on the outer side of the horizontal reactor 1 and is used for heating the horizontal reactor 1; the catalyst pipe 4 and the air inlet pipe 6 are connected with the front end of the horizontal reactor, and the tail gas pipe 5 and the discharge pipe 7 are connected with the rear end of the horizontal reactor.
The other end of the solid stirring shaft can extend into the horizontal reactor 1 and is detachably connected with one end of the hollow stirring shaft 2; or can be welded with the hollow stirring shaft 2, and when the hollow stirring shaft 2 is disassembled and assembled, the whole stirring shaft is drawn out for operation.
Before horizontal reactor 1 was installed into to hollow mixing shaft 2, the air of inside need to be got rid of, guaranteed its safety in the environment of high temperature reaction, the utility model provides a two kinds of forms, it is first, as shown in fig. 2, be equipped with a blow vent 15 on the hollow mixing shaft 2, the connection aspiration pump can be dismantled to the blow vent for take away the air in the hollow mixing shaft.
Secondly, as shown in fig. 3, two air vents 15 are arranged on the hollow stirring shaft 2, one air vent is detachably connected with an inflator pump and used for filling inert gas into the hollow stirring shaft, a control valve is opened to release air when the other air vent is used for filling inert gas, and the control valves of the two air vents are closed when the air vent stays.
Optionally, a driving motor of the horizontal stirrer is arranged outside the front end or the rear end of the horizontal reactor 1, and the driving motor is connected with one end of the solid stirring shaft 14 to drive the solid stirring shaft 14 to rotate; the solid stirring shaft 14 can be connected with the hollow stirring shaft 2 through a pin
Optionally, the outer diameter of the hollow stirring shaft 2 is greater than 80mm, the inner diameter is not less than 50mm, the length is 3-20m, the inner diameter of the horizontal reactor 1 is greater than 500mm, the inner diameter of the horizontal reactor is not greater than 5m, otherwise, the temperature uniformity inside the horizontal reactor 1 is not well controlled.
Optionally, the horizontal reactor 1 sequentially includes a first low-temperature region 9, a high-temperature reaction region 10, and a second low-temperature region 11 from front to back, a first baffle 12 is disposed between the first low-temperature region 9 and the high-temperature reaction region 10, a second baffle 13 is disposed between the second low-temperature region 11 and the high-temperature reaction region 10, and the first baffle 12 and the second baffle 13 are respectively used for blocking heat of the high-temperature reaction region 10 from diffusing to the first low-temperature region 9 and the second low-temperature region 11.
Optionally, two ends of the horizontal reactor 1 are respectively provided with a detachable end cover, so that the maintenance is convenient, and the joint of the end cover and the horizontal reactor 1 is provided with a plurality of sealing rings, so that the high-efficiency sealing is realized, and the temperature inside the horizontal reactor 1 is prevented from being reduced; shaft seals are respectively arranged on the end covers at the two ends of the horizontal reactor 1, so that the solid stirring shaft 14 and the hollow stirring shaft 2 can conveniently penetrate through the end covers and rotate.
Optionally, the heater 3 is enclosed outside the horizontal reactor 1, and the length of the heater 3 is greater than that of the high-temperature reaction zone 10, so that the heater 3 can sufficiently heat the high-temperature reaction zone 10. The heater 3 may take a variety of commercially available forms, such as a heating plate, heating jacket, heating wire.
Optionally, the outer edges of the first baffle plate 12 and the second baffle plate 13 are welded and fixed with the inner wall of the horizontal reactor 1, so as to ensure the sealing property of the high-temperature reaction zone 10 and the stability of the two baffle plates; the first low temperature zone 9 and the second low temperature zone 11 are both empty inside.
Optionally, the upper portion, the center, and the lower portion of the first baffle 12 are respectively provided with a through hole, which is used for the catalyst tube 4, the hollow stirring shaft 2, and the air inlet tube 6 to penetrate through the first baffle 12, the catalyst tube 4, the hollow stirring shaft 2, and the air inlet tube 6 penetrate through the front end of the horizontal reactor 1, sequentially penetrate through the through holes of the first low temperature region 9 and the first baffle 12, and then extend into the high temperature reaction region 10, the catalyst tube 4 and the air inlet tube 6 respectively provide catalyst and carbon source raw material gas for the high temperature reaction region 10, and react at the high temperature of the high temperature reaction region 10 to generate carbon nanotubes.
Optionally, the upper portion, the center, and the lower portion of the second baffle 13 are respectively provided with a through hole, which is used for the tail gas pipe 5, the hollow stirring shaft 2, and the discharging pipe 7 to penetrate through the second baffle 13, the tail gas pipe 5 and the discharging pipe 7 penetrate through the rear end of the horizontal reactor 1, sequentially penetrate through the through holes of the second low-temperature zone 11 and the second baffle 13, and then extend into the high-temperature reaction zone 10, and the tail gas pipe 5 and the discharging pipe 7 are respectively used for outputting the tail gas after the reaction in the high-temperature reaction zone 10 and the generated carbon nanotubes.
Optionally, the through holes at the centers of the first baffle plate 12 and the second baffle plate 13 correspond to each other and correspond to shaft seals on end covers at two ends of the horizontal reactor 1, so that the straight hollow stirring shaft 2 can pass through the end cover of the horizontal reactor 1, the first baffle plate 12 and the second baffle plate 13;
the stirring blades are uniformly distributed on the stirring shaft in the high-temperature reaction zone 10 and are used for stirring the materials in the high-temperature reaction zone 10;
the through holes at the centers of the first baffle plate 12 and the second baffle plate 13 are provided with auxiliary shaft seals, so that the hollow stirring shaft 2 can freely rotate when passing through the first baffle plate 12 and the second baffle plate 13.
Optionally, the first low-temperature region 9 and the second low-temperature region 11 are respectively provided with an exhaust pipe 8 for exhausting expanded air when the gas in the two low-temperature regions is heated in the high-temperature reaction region 10, so as to ensure the safety of the horizontal reactor 1.
Claims (9)
1. A carbon nano tube horizontal reactor with a hollow stirring shaft is characterized by comprising a horizontal reactor, a horizontal stirrer, a heater, a catalyst tube, a tail gas tube, a gas inlet tube and a discharge tube, wherein the stirring shaft of the horizontal stirrer comprises a hollow stirring shaft and a solid stirring shaft, one end of the solid stirring shaft is connected with a driving motor outside the horizontal reactor, the other end of the solid stirring shaft is connected with one end of the hollow stirring shaft, and both ends of the hollow stirring shaft are sealed;
when the hollow stirring shaft is arranged in the horizontal reactor, the hollow stirring shaft is superposed with the central axis of the horizontal reactor;
the hollow stirring shaft is provided with at least one vent, and when the hollow stirring shaft is arranged outside the horizontal reactor, the vent is detachably connected with an air pump or an inflator pump and is used for pumping away air in the hollow stirring shaft or replacing the air in the hollow stirring shaft with inert gas;
the heater is arranged on the outer side of the horizontal reactor and used for heating the horizontal reactor; the catalyst pipe and the gas inlet pipe are connected with the front end of the horizontal reactor, and the tail gas pipe and the discharge pipe are connected with the rear end of the horizontal reactor.
2. The carbon nanotube horizontal reactor according to claim 1, wherein the hollow stirring shaft is provided with a vent, and the vent is detachably connected with an air pump for pumping air out of the hollow stirring shaft.
3. The carbon nanotube horizontal reactor according to claim 1, wherein the hollow stirring shaft is provided with two vents, one vent is detachably connected with an inflator pump for filling the hollow stirring shaft with inert gas, and the other vent is used for releasing air when filling the hollow stirring shaft with inert gas.
4. The carbon nanotube horizontal reactor according to claim 1, wherein the hollow stirring shaft has an outer diameter of more than 80mm, an inner diameter of not less than 50mm, a length of more than 3m, and an inner diameter of more than 500mm.
5. The carbon nanotube horizontal reactor according to claim 1, wherein the horizontal reactor comprises a first low temperature zone, a high temperature reaction zone and a second low temperature zone in sequence from front to back, a first baffle plate is arranged between the first low temperature zone and the high temperature reaction zone, a second baffle plate is arranged between the second low temperature zone and the high temperature reaction zone, and the first baffle plate and the second baffle plate are respectively used for blocking heat of the high temperature reaction zone from diffusing to the first low temperature zone and the second low temperature zone.
6. The carbon nanotube horizontal reactor according to claim 5, wherein the upper part, the center and the lower part of the first baffle plate are respectively provided with a through hole for the catalyst tube, the hollow stirring shaft and the air inlet tube to penetrate through the first baffle plate, the catalyst tube, the hollow stirring shaft and the air inlet tube penetrate through the front end of the horizontal reactor, sequentially penetrate through the first low-temperature region and the first baffle plate, and then extend into the high-temperature reaction region, and the catalyst tube and the air inlet tube respectively provide a catalyst and carbon source raw material gas for the high-temperature reaction region to react at high temperature in the high-temperature reaction region to generate the carbon nanotubes.
7. The carbon nanotube horizontal reactor according to claim 6, wherein the second baffle plate has a through hole at its upper, central and lower portions for passing a tail gas pipe, a hollow stirring shaft and a discharge pipe through the second baffle plate, respectively, the tail gas pipe and the discharge pipe are inserted from the rear end of the horizontal reactor, sequentially pass through the second low temperature zone and the second baffle plate, and then enter the high temperature reaction zone, and the tail gas pipe and the discharge pipe are for outputting the tail gas and the generated carbon nanotubes after the reaction in the high temperature reaction zone, respectively.
8. The carbon nanotube horizontal reactor according to claim 7, wherein the through holes at the centers of the first baffle and the second baffle are corresponding to each other and are corresponding to shaft seals on the end caps at the two ends of the horizontal reactor, so that the straight hollow stirring shaft can pass through the end caps, the first baffle and the second baffle of the horizontal reactor;
the through holes in the centers of the first baffle and the second baffle are respectively provided with an auxiliary shaft seal, so that the hollow stirring shaft can freely rotate when passing through the first baffle and the second baffle.
9. The horizontal carbon nanotube reactor according to claim 8, wherein the first low temperature zone and the second low temperature zone are provided with exhaust pipes, respectively, for exhausting expanded air when the gas in the two low temperature zones is heated in the high temperature reaction zone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222784340.0U CN218422689U (en) | 2022-10-21 | 2022-10-21 | Carbon nano tube horizontal reactor with hollow stirring shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222784340.0U CN218422689U (en) | 2022-10-21 | 2022-10-21 | Carbon nano tube horizontal reactor with hollow stirring shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218422689U true CN218422689U (en) | 2023-02-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222784340.0U Active CN218422689U (en) | 2022-10-21 | 2022-10-21 | Carbon nano tube horizontal reactor with hollow stirring shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218422689U (en) |
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- 2022-10-21 CN CN202222784340.0U patent/CN218422689U/en active Active
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