CN216120374U - Device for dispersing catalyst slurry of mixed fuel cell - Google Patents
Device for dispersing catalyst slurry of mixed fuel cell Download PDFInfo
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- CN216120374U CN216120374U CN202122078693.4U CN202122078693U CN216120374U CN 216120374 U CN216120374 U CN 216120374U CN 202122078693 U CN202122078693 U CN 202122078693U CN 216120374 U CN216120374 U CN 216120374U
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Abstract
The utility model belongs to the field of fuel cells, and particularly relates to a device for dispersing mixed fuel cell catalyst slurry, which comprises a mixing unit and a stirring unit; the mixing unit comprises a cylinder body and a cover body covering the cylinder body, and a sealed space is formed by the cover body and the cylinder body; the cover body is provided with a vacuumizing hole, a feeding hole, a stirring unit mounting hole and an air inlet hole, and the stirring unit is mounted on the mixing unit through the stirring unit mounting hole. Compared with the prior art, the utility model ensures that the cylinder is in a highly anaerobic state by repeatedly carrying out operations of vacuumizing and introducing inert gas in the cylinder, and has higher safety.
Description
Technical Field
The utility model belongs to the field of fuel cells, and particularly relates to a device for dispersing catalyst slurry of a mixed fuel cell.
Background
A fuel cell is a chemical device that directly converts chemical energy of fuel into electrical energy, and is also called an electrochemical generator. It is a fourth power generation technology following hydroelectric power generation, thermal power generation and atomic power generation. The fuel cell converts the Gibbs free energy in the chemical energy of the fuel into electric energy through electrochemical reaction, and is not limited by the Carnot cycle effect, so the efficiency is high; in addition, fuel and oxygen are used as raw materials for the fuel cell, and mechanical transmission parts are not arranged, so that the discharged harmful gas is extremely little, and the service life is long. It follows that fuel cells are the most promising power generation technology from the viewpoint of energy conservation and ecological environment conservation.
The catalyst layer is a place where hydrogen and oxygen electrochemically react in the fuel cell to generate electric current, and is the core of the hydrogen fuel cell. Since there are three components involved in the chemical reaction, i.e., gas (hydrogen and oxygen), electrons and protons, it is desirable that all of the three components reach the catalyst surface. The gas passes through the voids, the electrons pass through the conductive support, and the protons pass through the ionomer, which puts high demands on the catalyst layer material. First it must be porous so that hydrogen and oxygen can pass through; secondly, the conductivity of the conductive material must be good, so that the current can be large; then, it has good contact with the ionomer to ensure that protons can come in; again, the catalyst layer must be thin so that cell potential loss due to proton transfer rate and reaction gas penetration deep into the catalyst layer is minimized; finally, the water of reaction must be effectively removed, otherwise the catalyst will be immersed in the water, resulting in unreachable gases.
The catalyst used by the present fuel cell is mainly a nano-scale carbon carrier loaded with a nano-scale platinum catalyst, and the catalyst is characterized in that the platinum catalyst has small particle size and high surface activity, and simultaneously, the particle size of the carbon carrier is small, so that the whole activity of the catalyst is very high, once the catalyst meets oxygen in the air and carbon-containing organic solvents such as alcohols and the like, the combustion is easily generated, the production safety is influenced, and the catalyst carrier is damaged. If the carbon carrier carrying the platinum catalyst is dispersed in a mixed solvent of water and an organic solvent at present, namely fuel cell catalyst slurry is required to be obtained, the safety of the existing device is low, fire hazards exist, and particularly when the amount of the catalyst and the amount of the organic solvent are large, fire accidents are easy to occur.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solve the above problems and provide an apparatus for dispersing and mixing a fuel cell catalyst slurry, which completely removes oxygen or air during the dispersion and mixing process of the fuel cell catalyst slurry and ensures high safety during the dispersion and mixing process.
The purpose of the utility model is realized by the following technical scheme:
an apparatus for dispersing a mixed fuel cell catalyst slurry includes a mixing unit and a stirring unit; the mixing unit comprises a cylinder body and a cover body covering the cylinder body, and a sealed space is formed by the cover body and the cylinder body; the cover body is provided with a vacuumizing hole, a feeding hole, a stirring unit mounting hole and an air inlet hole, and the stirring unit is mounted on the mixing unit through the stirring unit mounting hole.
Preferably, the cylinder body and the cover body are sealed through a sealing ring or ground glass.
Preferably, the cylinder is of a double-layer structure, an interlayer outlet and an interlayer inlet are formed in the side wall of the cylinder, and heat insulation or cooling is performed in the cylinder by vacuumizing or filling heat insulation materials or filling cooling media in the interlayer.
Preferably, the material of barrel and lid be glass, stainless steel or pottery.
Preferably, the volume of the cylinder is 1-10L.
Preferably, the bottom of the cylinder body is provided with a discharge hole.
Preferably, the stirring unit mounting hole is arranged at the center of the cover body, and the stirring shaft of the stirring unit is vertically inserted into the mixing unit.
Preferably, the vacuumizing hole, the feeding hole and the air inlet hole are dispersedly arranged on the cover body.
Preferably, the vacuumizing hole is connected with a vacuumizing pump, and the air inlet hole is connected with an inert gas storage tank, such as a nitrogen tank.
Preferably, the stirring unit is a high-speed stirrer or a high-speed disperser.
Preferably, the stirring unit comprises a motor, a stirring shaft and a stirring paddle or a dispersing paddle, the motor is connected with the stirring paddle or the dispersing paddle through the stirring shaft, the stirring paddle or the dispersing paddle is arranged in the barrel, and the distance between the outer edge of the paddle and the inner wall or the bottom of the barrel is 1-8 cm.
When the catalyst is used, a catalyst is added into the mixing unit and sealed to form a sealed space; vacuumizing the formed sealed space, filling inert gas, and repeating for many times to completely replace the internal gas with the inert gas; and slowly adding water and an organic solvent under stirring to obtain the fuel cell catalyst slurry.
The working principle of the utility model is as follows:
platinum carbon catalyst is added into the cylinder body, and the cover body is pressed tightly to form a sealed space. And installing a stirring unit, and extending a stirring shaft of the stirring unit and a stirring paddle or dispersing slurry into the position, close to the bottom, of the barrel from a stirring unit installation hole on the cover body for stirring. The vacuumizing hole and the air inlet hole on the cover body are respectively connected to a vacuumizing pump and an inert gas (such as nitrogen, helium and the like) storage tank, the vacuumizing pump is firstly opened to vacuumize the air in the cylinder, then the inert gas is introduced into the cylinder, and the operations of vacuumizing and introducing the inert gas are repeatedly carried out for a plurality of times, so that the air in the cylinder is completely exhausted. Filling inert gas into the cylinder, opening the cylinder and stirring, slowly adding or dropwise adding a water-containing organic solvent serving as a solvent from a feeding hole, and stirring and dispersing to form catalyst slurry. After stirring, discharging the catalyst slurry from the discharge hole at the bottom of the cylinder or opening the cover body from the cover body and pouring out the catalyst slurry.
Compared with the prior art, the utility model has the following beneficial effects:
1. the operation of vacuumizing and introducing inert gas in the cylinder is performed for many times, so that the cylinder is in a highly oxygen-free state, and the cylinder has higher safety.
2. The cover body is provided with the plurality of holes, different operations can be realized by connecting different devices through different holes, the problem that the same hole is mixed in the operation process can be avoided, and the universality of the device can be improved.
3. The cylinder body adopts a double-layer structure, and cooling media such as circulating cooling water can be filled into the interlayer for cooling and heat preservation.
Drawings
FIG. 1 is a schematic perspective view of a dispersion stirring apparatus according to the present invention;
FIG. 2 is a schematic front view of the dispersion stirring apparatus of the present invention;
in the figure: 1-a cover body; 2-a cylinder body; 31-sandwich outlet; 32-interlayer inlet; 4-a sleeve; 5-stirring shaft; 6, a motor; 7-stirring unit mounting holes; 8-vacuum hole pumping; 9-air inlet holes; 10-a feed hole.
Detailed Description
The utility model is described in detail below with reference to the figures and specific embodiments.
Example 1
An apparatus for dispersing a mixed fuel cell catalyst slurry, as shown in fig. 1 and 2, includes a mixing unit and a stirring unit; the mixing unit comprises a cylinder body 2 and a cover body 1 covering the cylinder body 2, and a sealed space is formed by the cover body 1 and the cylinder body 2; the lid 1 is provided with a vacuumizing hole 8, a feeding hole 10, a stirring unit mounting hole 7 and an air inlet 9, and the stirring unit is mounted on the mixing unit through the stirring unit mounting hole 7.
More specifically, in the present embodiment:
a stirring unit installation hole 7 is provided at a central position of the cover body 1 for passing through the stirring shaft 5 of the stirring unit, and the diameter of the stirring unit installation hole 7 is determined according to the diameter of the stirring shaft 5. The cover body 1 is also provided with a vacuumizing hole 8, a feeding hole 10 and an air inlet hole 9 which are arranged along the circumferential direction, and the diameter of the vacuumizing hole is determined according to the actual situation. The vacuumizing hole 8 and the air inlet hole 9 are respectively connected with a vacuumizing pump and an inert gas storage tank. An inverted cone-shaped sleeve 4 is fixed on the upper part of the cover (fixed, so that the cover body 1 and the sleeve 4 cannot rotate along with the stirring shaft 5), and the stirring shaft 5 extends into the barrel body 2 through the sleeve 4 and the stirring unit mounting hole 7.
In order to better ensure the dispersion and mixing effect and the safety, the volume of the cylinder body 2 is 5L. The cylinder 2 adopts a double-layer structure, an interlayer outlet 31 and an interlayer inlet 32 for entering and exiting the cooling medium are arranged on the cylinder 2, the interlayer inlet 32 and the interlayer outlet 31 are respectively arranged on opposite sides and are arranged one above the other, wherein the interlayer inlet 32 is arranged on the lower side, and the interlayer outlet 31 is arranged on the upper side. The bottom of the cylinder 2 is provided with a discharge hole through which the catalyst slurry can be discharged after the completion of dispersion and mixing, or the catalyst slurry can be directly poured out by opening the lid 1. The diameter of the discharge hole is determined according to the diameter of the cylinder 2 and the volume of the cylinder 2.
A sealing ring or frosted glass is arranged between the cylinder body 2 and the cover body 1 for sealing, so that the cylinder body 2 and the cover body 1 are sealed. The material of the cylinder 2 and the cover 1 can be made of glass, stainless steel or ceramic.
The stirring unit comprises a motor 6, a stirring shaft 5 and a stirring paddle or a dispersing paddle, the motor 6 is connected with the stirring paddle or the dispersing paddle through the stirring shaft 5, the stirring paddle or the dispersing paddle is arranged in the barrel 2, and the distance between the outer edge of the paddle and the inner wall or the bottom of the barrel 2 is 1cm, so that the effect and the safety of dispersing and mixing are guaranteed. The stirring shaft 5 of the stirring unit is vertically inserted into the mixing unit through the stirring unit mounting hole 7. The stirring unit used may be a high-speed stirrer, a high-speed disperser or other device capable of achieving a dispersing and stirring effect.
When the catalyst is used, a catalyst is added into the mixing unit and sealed to form a sealed space; vacuumizing the formed sealed space, filling inert gas, and repeating for many times to completely replace the internal gas with the inert gas; the aqueous organic solvent, which in this example was an aqueous ethanol solution, was slowly added under stirring to obtain the fuel cell catalyst slurry.
The working principle of the utility model is as follows:
platinum carbon catalyst is added into the cylinder body 2, and the cover body 1 is pressed tightly to form a sealed space. And (3) installing a stirring unit, and extending a stirring shaft 5 and a stirring paddle or dispersing slurry of the stirring unit into the position, close to the bottom, of the barrel body 2 from a stirring unit installing hole 7 on the cover body 1 for stirring. The vacuumizing hole 8 and the air inlet hole 9 on the cover body 1 are respectively connected to a vacuumizing pump and an inert gas (such as nitrogen, helium and the like) storage tank, the vacuumizing pump is firstly opened to vacuumize the air in the cylinder body 2, then the inert gas is introduced into the cylinder body 2, and the operations of vacuumizing and introducing the inert gas are repeatedly carried out for multiple times, so that the air in the cylinder body 2 is completely exhausted. The cylinder 2 is filled with an inert gas, and after stirring, a water-containing organic solvent is slowly added or dropped as a solvent through the feed hole 10, and stirred and dispersed to form a catalyst slurry. After stirring, discharging the catalyst slurry from the discharge hole at the bottom of the cylinder 2 or pouring out the catalyst slurry by opening the cover 1 from the cover 1.
The embodiments described above are intended to facilitate the understanding and use of the utility model by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (10)
1. An apparatus for dispersing a mixed fuel cell catalyst slurry, comprising a mixing unit and a stirring unit; the mixing unit comprises a cylinder body (2) and a cover body (1) covering the cylinder body (2), and a sealed space is formed by the cover body (1) and the cylinder body (2); the cover body (1) is provided with a vacuumizing hole (8), a feeding hole (10), a stirring unit mounting hole (7) and an air inlet hole (9), and the stirring unit is mounted on the mixing unit through the stirring unit mounting hole (7).
2. The apparatus for dispersing a mixed fuel cell catalyst slurry as claimed in claim 1, wherein the cylinder (2) and the cover (1) are sealed by a sealing ring or ground glass.
3. The apparatus for dispersing mixed fuel cell catalyst slurry according to claim 1, wherein the cylinder (2) has a double-layer structure, the side wall of the cylinder (2) is provided with an interlayer outlet (31) and an interlayer inlet (32), and the interlayer is evacuated or filled with a heat insulating material or a cooling medium.
4. The apparatus for dispersing mixed fuel cell catalyst slurry according to claim 1, wherein the material of the cylinder (2) and the cover (1) is glass, stainless steel or ceramic.
5. The apparatus for dispersing a catalyst slurry for a hybrid fuel cell according to claim 1, wherein the volume of the cylinder (2) is 1 to 10L.
6. The apparatus for dispersing a mixed fuel cell catalyst slurry according to claim 1, wherein the agitating unit mounting hole (7) is provided at a central position of the cover body (1), and the agitating shaft (5) of the agitating unit is vertically inserted into the mixing unit.
7. The apparatus for dispersing a catalyst slurry for a hybrid fuel cell according to claim 1, wherein the evacuation hole (8), the feed hole (10), and the intake hole (9) are dispersedly provided in the cover body (1).
8. The apparatus for dispersing a mixed fuel cell catalyst slurry as claimed in claim 1, wherein the evacuation hole (8) is connected to an evacuation pump, and the air intake hole (9) is connected to an inert gas storage tank.
9. The apparatus for dispersing a mixed fuel cell catalyst slurry according to claim 1, wherein the stirring unit is a high-speed stirrer or a high-speed disperser.
10. The device for dispersing mixed fuel cell catalyst slurry according to claim 9, wherein the stirring unit comprises a motor (6), a stirring shaft (5) and a stirring paddle or a dispersing paddle, the motor (6) is connected with the stirring paddle or the dispersing paddle through the stirring shaft (5), the stirring paddle or the dispersing paddle is arranged in the cylinder (2), and the distance between the outer edge of the stirring paddle and the inner wall or the bottom of the cylinder (2) is 1-8 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122078693.4U CN216120374U (en) | 2021-08-31 | 2021-08-31 | Device for dispersing catalyst slurry of mixed fuel cell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122078693.4U CN216120374U (en) | 2021-08-31 | 2021-08-31 | Device for dispersing catalyst slurry of mixed fuel cell |
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| CN216120374U true CN216120374U (en) | 2022-03-22 |
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| CN202122078693.4U Active CN216120374U (en) | 2021-08-31 | 2021-08-31 | Device for dispersing catalyst slurry of mixed fuel cell |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117101529A (en) * | 2023-10-20 | 2023-11-24 | 上海韵量新能源科技有限公司 | Weighing type centrifugal batching method and batching device for fuel cell catalyst slurry |
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2021
- 2021-08-31 CN CN202122078693.4U patent/CN216120374U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117101529A (en) * | 2023-10-20 | 2023-11-24 | 上海韵量新能源科技有限公司 | Weighing type centrifugal batching method and batching device for fuel cell catalyst slurry |
| CN117101529B (en) * | 2023-10-20 | 2024-02-09 | 上海韵量新能源科技有限公司 | Weighing type centrifugal batching method and batching device for fuel cell catalyst slurry |
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20230602 Address after: Room 504, Building B, Science and Technology Innovation Park, No. 398 Mahuan Road, Lihai Street, Yuecheng District, Shaoxing City, Zhejiang Province, 312000 (commitment to apply) Patentee after: Zhejiang Yuanshen Hydrogen Power Technology Co.,Ltd. Address before: 201613 room 335, building 1, No. 299, Zhongchen Road, Songjiang District, Shanghai Patentee before: Shanghai Husheng New Energy Technology Co.,Ltd. |
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