An apparatus for preparing oligowall carbon nanotubes

Abstract

The utility model relates to carbon nanotube preparation device field discloses a kind of oligowall carbon nanotube preparation devices, including device box and filter box, the device box inside is provided with preparation mechanism, the filter box inside is provided with filter mechanism, the preparation mechanism includes air inlet pipe, the device box upper end is provided with air inlet pipe, the device box inside is opened with preparation cavity, the preparation cavity inside is provided with reaction frame, the reaction frame upper end is provided with deflector, the deflector inside is opened with multiple air inlet cavities, the air inlet cavity is set as conical stainless steel vortex cavity body, the air inlet cavity bottom end is opened with multiple groups of symmetrical oblique micropore. In the utility model, the preparation mechanism is set, the air inlet cavity is optimized, the uniformity of injected gas in the reaction cavity can be effectively improved, and then the filter mechanism is set, the waste gas can be filtered, so that the waste gas can be recycled.

Description

Technical Field

[0001] This utility model relates to the field of carbon nanotube preparation apparatus, and more particularly to an apparatus for preparing oligowalled carbon nanotubes. Background Technology

[0002] Carbon nanotubes, as one-dimensional nanomaterials, are lightweight, have a perfectly connected hexagonal structure, and possess many exceptional mechanical, electrical, and chemical properties. In recent years, with the deepening research into carbon nanotubes and nanomaterials, their broad application prospects have become increasingly apparent.

[0003] Traditional carbon nanotube preparation devices have certain structural limitations. The vapor deposition reaction zone and the catalyst injection unit are usually in a simple series structure, which leads to uneven catalyst dispersion. In addition, the exhaust gas discharged from carbon nanotube preparation contains usable gas, and direct discharge would be wasteful.

[0004] Therefore, those skilled in the art have provided an apparatus for preparing oligowalled carbon nanotubes to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies and provide a device for preparing oligowalled carbon nanotubes. By optimizing the gas inlet chamber through the preparation mechanism, the uniformity of the injected gas in the reaction chamber can be effectively improved. Furthermore, by using the filtration mechanism, the waste gas can be filtered, thereby enabling the waste gas to be recycled.

[0006] To achieve the above objectives, this utility model provides the following technical solution: An apparatus for preparing oligowalled carbon nanotubes includes an apparatus housing and a filter housing. The apparatus housing contains a preparation mechanism, and the filter housing contains a filtration mechanism. The preparation mechanism includes an air inlet pipe. An air inlet pipe is provided at the upper end of the device housing. A preparation chamber is opened inside the device housing. A reaction frame is provided inside the preparation chamber. A guide plate is provided at the upper end of the reaction frame. Multiple air inlet chambers are opened inside the guide plate. The air inlet chambers are set as conical stainless steel vortex chambers. Multiple sets of symmetrical oblique microholes are opened at the bottom of the air inlet chambers. The filtration mechanism includes a fixed frame, which is provided inside the filter box. The upper two outer walls of the fixed frame are provided with slots. Pull rods are provided on both sides of the outer wall of the filter box. Cavities are provided inside both sides of the filter box. One end of the pull rod extends into the cavity and is connected to an inclined block. The inclined block and the slot are engaged. A filter plate is provided inside the fixed frame. The above technical solution optimizes the air inlet chamber through the preparation mechanism, which effectively improves the uniformity of the injected gas in the reaction chamber. Furthermore, the filter mechanism filters the exhaust gas, enabling its recycling.

[0007] Furthermore, a reaction chamber is provided inside the reaction frame, a base is provided on the inner wall at the bottom of the reaction chamber, and a catalytic reaction layer is provided on the upper end of the base; The above technical solution allows the preparation reaction to be carried out inside the reaction chamber.

[0008] Furthermore, a vent pipe is provided between the device housing and the filter housing, and a second solenoid valve is provided on the outer wall of the vent pipe; The above technical solution allows the exhaust gas inside the filter box to enter through a vent pipe.

[0009] Furthermore, a spring is connected to one side of the inner wall of the cavity, and the spring is sleeved on the outer wall of one end of the pull rod; The above technical solution allows the oblique locking block to be more securely fixed inside the slot.

[0010] Furthermore, a first air outlet pipe and a second air outlet pipe are respectively provided on both sides of the outer wall of the filter box, and a first solenoid valve is provided on the outer wall of both the first air outlet pipe and the second air outlet pipe. The above technical solution separates waste gas and usable gas through the first and second exhaust pipes, saving costs.

[0011] Furthermore, a door is provided on one side of the outer wall of the device housing; The above technical solution facilitates the removal of nanotubes prepared inside the device.

[0012] Furthermore, both the device housing and the filter housing are equipped with anti-slip pads at their bottom ends; The above technical solutions improve the stability of the device during use.

[0013] Furthermore, a control module is provided on one side of the outer wall of the device housing, and the control module is electrically connected to the first solenoid valve and the second solenoid valve. The above technical solution facilitates the control of various electrical components inside the device and makes operation convenient.

[0014] This utility model has the following beneficial effects: 1. The present invention proposes a device for preparing oligowalled carbon nanotubes. Through the cooperation of the guide plate, the air inlet chamber and the micropores, the air inlet chamber is set as a stainless steel air inlet chamber with a 45° cone angle. The narrow inlet forces the fluid to enter at high speed, generating strong shear force and instantly forming a stable vortex. The expansion of the cone angle causes the pressure to gradually decrease as the fluid flows down the wall, avoiding the collapse of the vortex core and maintaining the stability of the vortex. The inner wall is mirror polished. At the same time, multiple sets of symmetrical oblique micropores are opened at the bottom of the air inlet chamber. Thus, the Coanda effect causes the gas entering the air inlet chamber to form a swirling flow. The dispersion uniformity is improved by about 3 times compared with the traditional straight pipe injection method.

[0015] 2. The oligowalled carbon nanotube preparation device proposed in this utility model, through the setting of a filter plate, and the filter plate material being set as a ceramic fiber filter plate, can filter by-products such as carbon soot in waste gas, thereby enabling the reuse of waste gas, which is green and environmentally friendly and saves costs. Furthermore, through the cooperation of the set blocks, springs, slots, and pull rods, the filter plate can be quickly disassembled and installed, thereby enabling regular maintenance and cleaning of the filter plate, avoiding the decline in filtration effect caused by long-term use, and thus improving the practicality of the device. Attached Figure Description

[0016] Figure 1 This is an isometric view of an apparatus for preparing oligowalled carbon nanotubes according to this utility model; Figure 2 This is a cross-sectional view of an apparatus for preparing oligowalled carbon nanotubes according to the present invention. Figure 3 This is a cross-sectional view of the filtration mechanism of a device for preparing oligowalled carbon nanotubes according to this utility model. Figure 4 for Figure 2 Enlarged view of point A in the middle; Figure 5 for Figure 3 Enlarged view of point B in the middle.

[0017] Explanation of reference numerals in the attached figures: 1. Preparation mechanism; 101. Inlet pipe; 102. Guide plate; 103. Preparation chamber; 104. Reaction frame; 105. Base; 106. Catalytic reaction layer; 107. Inlet chamber; 108. Micropores; 109. Reaction chamber; 2. Filtration mechanism; 201. Fixing frame; 202. Filter plate; 203. Slot; 204. Inclined block; 205. Spring; 206. Pull rod; 207. Cavity; 3. Device housing; 4. Door; 5. Filter housing; 6. Control module; 7. First solenoid valve; 8. First outlet pipe; 9. Second outlet pipe; 10. Anti-slip pad; 11. Vent pipe; 12. Second solenoid valve. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Reference Figure 1 , Figure 2 and Figure 4 This utility model provides a specific implementation method: An apparatus for preparing oligowalled carbon nanotubes includes an apparatus housing 3 and a filter housing 5. The apparatus housing 3 is equipped with a preparation mechanism 1, and the filter housing 5 is equipped with a filter mechanism 2. The preparation mechanism 1 includes an air inlet pipe 101. The air inlet pipe 101 is provided at the upper end of the device housing 3. A preparation chamber 103 is opened inside the device housing 3. A reaction frame 104 is provided inside the preparation chamber 103. A guide plate 102 is provided at the upper end of the reaction frame 104. Multiple air inlet chambers 107 are opened inside the guide plate 102. The air inlet chamber 107 is set as a conical stainless steel vortex chamber. Multiple sets of symmetrical oblique microholes 108 are opened at the bottom end of the air inlet chamber 107. By optimizing the air inlet chamber 107 through the preparation mechanism 1, the uniformity of the injected gas in the reaction chamber 109 can be effectively improved. A reaction chamber 109 is opened inside the reaction frame 104. A base 105 is provided on the inner wall at the bottom end of the reaction chamber 109. A catalytic reaction layer 106 is provided at the upper end of the base 105. The preparation reaction is carried out inside the reaction chamber 109.

[0020] Reference Figure 1 , Figure 3 and Figure 5The filter mechanism 2 includes a fixed frame 201, which is installed inside the filter housing 5. The fixed frame 201 has slots 203 on both outer walls of its upper end. Pull rods 206 are installed on both outer walls of the filter housing 5. Cavities 207 are installed inside both sides of the filter housing 5. One end of the pull rod 206 extends into the cavity 207 and is connected to an inclined block 204. The inclined block 204 and the slot 203 are engaged. A filter plate 202 is installed inside the fixed frame 201. The filter mechanism 2 filters the exhaust gas, enabling its recycling. A vent pipe 11 is installed between the device housing 3 and the filter housing 5. A second solenoid valve 12 is installed on the outer wall of the vent pipe 11. The exhaust gas is introduced into the filter housing 5 through the vent pipe 11. One side of the inner wall of the cavity 207 is connected to… A spring 205 is attached, which is sleeved on the outer wall of one end of the pull rod 206, so that the inclined block 204 is more firmly fixed inside the slot 203. The outer walls of the filter box 5 are respectively provided with a first air outlet pipe 8 and a second air outlet pipe 9. The outer walls of the first air outlet pipe 8 and the second air outlet pipe 9 are provided with a first solenoid valve 7. The exhaust gas and usable gas are separated through the first air outlet pipe 8 and the second air outlet pipe 9, saving costs. A door 4 is provided on one side of the outer wall of the device box 3, which facilitates the removal of the nanotubes prepared inside the device. The bottom of the device box 3 and the filter box 5 are provided with anti-slip pads 10 to improve the stability of the device during use. A control module 6 is provided on one side of the outer wall of the device box 3. The control module 6 is electrically connected to the first solenoid valve 7 and the second solenoid valve 12, which facilitates the control of various electrical components inside the device and makes operation convenient.

[0021] Working principle: When using this device, argon gas is introduced into the device housing 3 to completely expel the air inside the preparation chamber 103. Then, the heating module inside the device housing 3 is controlled by the control module 6 to raise the temperature inside the preparation chamber 103. After reaching the specified temperature, the gas is switched to a hydrogen-argon mixture to continue heating. After the temperature stabilizes, the argon gas supply is stopped, and ethylene is introduced through the inlet pipe 101. After a certain amount of ethylene is introduced, the gas supply is stopped, and the temperature is maintained for the reaction. Because the guide plate 102 has multiple inlet chambers 107, and the inlet chambers 107 are set as stainless steel vortex chambers with a 45° cone angle and mirror polished inner walls, and multiple sets of symmetrical oblique microholes 108 are opened on the bottom surface, the dispersion can be improved compared to the traditional straight pipe injection method. The uniformity is improved by about 3 times. After the reaction is completed, the waste gas inside the preparation chamber 103 is controlled by the second solenoid valve 12 to enter the filter box 5, so that the waste gas is filtered through the filter plate 202. The useful gas is discharged through the second exhaust pipe 9, and the remaining waste gas is discharged through the first exhaust pipe 8. When the filter plate 202 has been used for a long time, the two pull rods 206 are pulled outward, so that the inclined block 204 and the slot 203 are disengaged. The filter plate 202 can be directly taken out through the fixing frame 201, and then the filter plate 202 can be cleaned and maintained. During installation, only the reverse operation is required. The device box 3 is equipped with a temperature sensor, which can monitor the temperature inside the device in real time. All internal connections of the device are sealed.

[0022] The following points should be noted in this article: 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in a general design.

[0023] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for preparing oligowalled carbon nanotubes, comprising a device housing (3) and a filter housing (5), characterized in that: The device housing (3) is equipped with a preparation mechanism (1), and the filter housing (5) is equipped with a filter mechanism (2). The preparation mechanism (1) includes an air inlet pipe (101). The upper end of the device housing (3) is provided with an air inlet pipe (101). The device housing (3) has a preparation chamber (103) inside. The preparation chamber (103) has a reaction frame (104) inside. The upper end of the reaction frame (104) is provided with a guide plate (102). The guide plate (102) has multiple air inlet chambers (107) inside. The air inlet chamber (107) is configured as a conical stainless steel vortex chamber. The bottom end of the air inlet chamber (107) has multiple sets of symmetrical oblique microholes (108). The filtration mechanism (2) includes a fixed frame (201). The fixed frame (201) is provided inside the filter box (5). The upper two outer walls of the fixed frame (201) are provided with slots (203). The outer walls of the filter box (5) are provided with pull rods (206). The filter box (5) is provided with cavities (207) on both sides. One end of the pull rod (206) extends into the cavity (207) and is connected to an inclined block (204). The inclined block (204) and the slot (203) are engaged and connected. The fixed frame (201) is provided with a filter plate (202).

2. The apparatus for preparing oligowalled carbon nanotubes according to claim 1, characterized in that: The reaction frame (104) has a reaction chamber (109) inside, and a base (105) is provided on the inner wall of the bottom end of the reaction chamber (109). A catalytic reaction layer (106) is provided on the upper end of the base (105).

3. The apparatus for preparing oligowalled carbon nanotubes according to claim 1, characterized in that: A vent pipe (11) is provided between the device housing (3) and the filter housing (5), and a second solenoid valve (12) is provided on the outer wall of the vent pipe (11).

4. The apparatus for preparing oligowalled carbon nanotubes according to claim 1, characterized in that: A spring (205) is connected to one side of the inner wall of the cavity (207), and the spring (205) is sleeved on the outer wall of one end of the pull rod (206).

5. The apparatus for preparing oligowalled carbon nanotubes according to claim 1, characterized in that: The filter box (5) has a first air outlet pipe (8) and a second air outlet pipe (9) on both sides of its outer wall. The outer walls of the first air outlet pipe (8) and the second air outlet pipe (9) are each equipped with a first solenoid valve (7).

6. The apparatus for preparing oligowalled carbon nanotubes according to claim 1, characterized in that: A door (4) is provided on one side of the outer wall of the device housing (3).

7. The apparatus for preparing oligowalled carbon nanotubes according to claim 1, characterized in that: The bottom of both the device housing (3) and the filter housing (5) are provided with anti-slip pads (10).

8. The apparatus for preparing oligowalled carbon nanotubes according to claim 1, characterized in that: A control module (6) is provided on one side of the outer wall of the device housing (3). The control module (6) is electrically connected to the first solenoid valve (7) and the second solenoid valve (12).

Images