CN213643644U

CN213643644U - Purifier

Info

Publication number: CN213643644U
Application number: CN202021535058.3U
Authority: CN
Inventors: 王建明; 卢进; 孙营; 王琛
Original assignee: Suzhou Gaomai New Energy Co ltd
Current assignee: Suzhou Gaomai New Energy Co ltd
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2021-07-09
Anticipated expiration: 2030-07-29

Abstract

The utility model provides a purifier, include: the palladium tube assembly comprises a plurality of palladium tubes arranged in an array; the mounting plate comprises a plurality of mounting holes arranged in an array, and one end of the palladium tube is mounted in the mounting holes; the graphite supporting plate is used for supporting the palladium tube assembly and comprises a plurality of fixing holes arranged in an array, and the palladium tubes penetrate through the fixing holes to be fixed by the graphite supporting plate; and the shell is internally provided with an accommodating cavity for accommodating the palladium tube assembly, the mounting plate and the graphite support plate. Compared with the prior art, the utility model discloses the purifier passes through graphite backup pad support palladium pipe to effectively prevent that palladium pipe from taking place vibrations, avoid producing the friction between the adjacent palladium pipe, thereby effectively improved the life of purifier.

Description

Purifier

Technical Field

The utility model belongs to the technical field of the hydrogen purification, especially, relate to a purifier.

Background

In recent years, with the rapid development of industries such as hydrogen fuel cells, steel, semiconductors, microelectronics, petrochemical industry and the like, the demand of high-purity hydrogen is rapidly increased, and the research on the production and separation technology of high-purity hydrogen is strongly promoted. The palladium and palladium alloy membrane has a series of advantages of excellent hydrogen permeation selectivity, good mechanical and thermal stability and the like based on the characteristics of the material, and is deeply and widely researched.

At present, palladium membrane purification technology is widely applied to the preparation of pure hydrogen and high-purity hydrogen. The commercial development of palladium membranes has gone through the process from pure palladium membranes to palladium alloy membranes. Since the tubular palladium membrane has a higher specific separation area than the sheet-shaped palladium membrane, which is advantageous for improving the integration of the palladium membrane module, the shape of the membrane is also developed from the original sheet shape to the now-commonly used tubular shape.

The tubular palladium membrane is divided into an unsupported type and a supported type. The unsupported tubular palladium membrane is prepared mainly through smelting, casting and rolling process, which includes mixing palladium or palladium alloy material in certain proportion, smelting and casting at high temperature to obtain cast ingot, cold and hot forging to form tube blank, and repeated cold rolling and annealing to obtain thin wall tube of required thickness. The unsupported tubular palladium membrane has the advantages of stable performance, good selectivity to hydrogen, poor mechanical strength, low hydrogen permeation rate, large pressure loss of hydrogen and high use cost. The above disadvantages limit the application of unsupported tubular palladium membranes to the technical field of low flow, low pressure, high purity hydrogen purification.

The supported tubular palladium membrane refers to metal palladium or an alloy membrane thereof which is loaded on the surface of a porous tubular support body through a physical or chemical method so as to integrate the metal palladium and the alloy membrane. The support is usually made of tubular porous ceramics, porous stainless steel, porous glass and the like. The preparation method of the supported tubular palladium membrane mainly comprises a physical vapor deposition method, a chemical vapor deposition method, a spray pyrolysis method, electroplating, chemical plating and the like. The support type tubular palladium membrane effectively solves the problem of poor mechanical strength of the palladium membrane tube because the support body is made of porous materials made of metal, ceramic and the like. Meanwhile, the palladium membrane or the palladium alloy membrane obtained by the preparation method has smaller thickness, so that the support type tubular palladium membrane also has the advantages of high hydrogen permeation rate, small hydrogen pressure loss, low use cost and the like. However, the supported tubular palladium membrane prepared by the foregoing method has a disadvantage in that the adhesion between the palladium membrane and the support is small. The purifier is easy to vibrate during the transportation process or when the purifier is arranged in an automobile to supply hydrogen for a vehicle-mounted hydrogen fuel cell, so that the palladium tube arranged in the purifier can vibrate, and the palladium membrane can be separated from the support body due to vibration. Moreover, when the palladium tubes vibrate, the adjacent palladium tubes may touch each other, thereby causing friction and damage to the palladium membrane, and further reducing the service life of the palladium tubes.

In view of the above problems, there is a need for a new purifier to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a purifier, this purifier pass through graphite support plate and support palladium pipe to effectively prevent that palladium pipe from taking place vibrations, avoid producing the friction between the adjacent palladium pipe, thereby effectively improved purifier's life.

In order to achieve the above object, the present invention provides a purifier, comprising: the palladium tube assembly comprises a plurality of palladium tubes arranged in an array; the mounting plate comprises a plurality of mounting holes arranged in an array, and one end of the palladium tube is mounted in the mounting holes; the graphite supporting plate is used for supporting the palladium tube assembly and comprises a plurality of fixing holes arranged in an array, and the palladium tubes penetrate through the fixing holes to be fixed by the graphite supporting plate; and the shell is internally provided with an accommodating cavity for accommodating the palladium tube assembly, the mounting plate and the graphite support plate.

As a further improvement of the utility model, the graphite supporting plate is in a shape of a circular plate, and the periphery of the graphite supporting plate tightly supports against the cavity wall of the accommodating cavity; and a plurality of air holes are formed in the graphite supporting plate.

As a further improvement of the utility model, the air holes are provided with three fixing holes adjacent to the air holes, and the three fixing holes form an equilateral triangle.

As a further improvement of the utility model, the circle center of the air hole is positioned on the center of the equilateral triangle.

As a further improvement of the present invention, the housing includes a first housing and a second housing matching with the first housing; the first shell is provided with a first flange, and the second shell is provided with a second flange; the first flange and the second flange are fixed together through screws, so that the first shell and the second shell are integrated.

As a further improvement of the present invention, the first flange is provided with a first abutting portion, and the second flange is provided with a second abutting portion; the first abutting portion and the second abutting portion abut against the mounting plate together to seal and fix the mounting plate.

As a further improvement of the present invention, the first supporting portion and the mounting plate are connected to each other and the second supporting portion and the mounting plate are connected to each other and the graphite gasket is disposed therebetween.

As a further improvement of the present invention, the first housing is provided with a first accommodating chamber, the second housing is provided with a second accommodating chamber, and the first accommodating chamber and the second accommodating chamber together form the accommodating chamber; the graphite support plate is positioned in the first accommodating cavity.

As a further improvement of the present invention, the graphite support plate comprises a first support plate close to the mounting plate and a second support plate far away from the mounting plate; the first shell is provided with an air inlet for inputting the hydrogen-rich mixed gas and an exhaust outlet for exhausting tail gas; the air inlet is located first casing deviates from the one end of mounting panel, the gas vent is located between mounting panel and the first backup pad.

As a further improvement of the utility model, the palladium tube comprises a support body and a palladium membrane arranged on the surface of the support body.

The utility model has the advantages that: the utility model discloses the clarifier passes through the graphite support board and supports palladium pipe to effectively prevent that palladium pipe from taking place vibrations, avoid producing the friction between the adjacent palladium pipe, thereby effectively improved the life of clarifier.

Drawings

Fig. 1 is a schematic perspective view of the purifier of the present invention.

Fig. 2 is a cross-sectional view of the purifier shown in fig. 1.

Fig. 3 is a schematic perspective view of the palladium tube assembly, the mounting plate, and the graphite support plate in cooperation with each other.

Fig. 4 is a schematic structural view of a palladium tube.

Fig. 5 is a perspective view of the mounting plate.

Fig. 6 is a schematic perspective view of a graphite support plate.

Fig. 7 is a sectional view of the housing.

Fig. 8 is a partially enlarged view of fig. 7.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 and 2, the present invention discloses a purifier 100, which includes a palladium tube assembly 10, a mounting plate 20, a graphite supporting plate 30 and a casing 40, wherein the palladium tube assembly 10, the mounting plate 20 and the graphite supporting plate 30 are accommodated in the casing 40.

Referring to fig. 3 and 4, the palladium tube assembly 10 includes a plurality of palladium tubes 11 arranged in an array. The palladium tube 11 includes a support 111 and a palladium membrane 112 disposed on a surface of the support 111. The support body 111 is tubular and includes an open end 1111, a sealed end 1112, and a blind recess 1113. The open end 1111 is mounted to the mounting plate 20. The support 111 is typically a tubular porous ceramic, porous stainless steel, porous glass, or the like. The palladium membrane 112 is plated on the outer surface of the support 111. The palladium membrane 112 may be a pure palladium membrane or an alloy palladium membrane. When the hydrogen-rich mixed gas is used, the hydrogen-rich mixed gas is jetted to the palladium tube 11, and after being filtered by the palladium membrane 112, the hydrogen enters the blind groove 1113 and is output and purified through the open end 1111.

Referring to fig. 5, 3 and 2, the mounting plate 20 is in a shape of a circular plate and includes a plurality of mounting holes 21 arranged in an array. The open end 1111 of the palladium tube 11 is fixedly installed in the installation hole 21. In this embodiment, the open end 1111 of the palladium pipe 11 is fixedly installed in the installation hole 21 by welding, but in other embodiments, the open end 1111 of the palladium pipe 11 may also be fixedly installed by other methods, which is not limited by the present invention. In the present embodiment, the mounting plate 20 is a stainless steel plate, but in other embodiments, the mounting plate 20 may be made of other materials, which is not limited by the present invention.

Referring to fig. 6, 3 and 2, the graphite supporting plate 30 is in a shape of a circular plate for supporting the palladium tube assembly 10, and includes a plurality of fixing holes 31 and air holes 32 arranged in an array. The palladium tube 11 passes through the fixing hole 31 to be supported and fixed by the graphite support plate 30. The air hole 32 has N (N >2, and N is an integer) fixing holes 31 adjacent thereto, and the N fixing holes 32 constitute a regular polygon. In this embodiment, N is 3, the 3 fixing holes 32 form an equilateral triangle, and the center of the air hole 32 is located on the center of the equilateral triangle. Because the fixing holes 31 are uniformly distributed on the periphery of the air holes 32, the palladium tubes 11 are also uniformly distributed on the periphery of the air holes 32, and the hydrogen-rich mixed gas passing through the air holes 32 can uniformly contact the surface of the palladium tubes 11, thereby improving the purification efficiency of the palladium tubes 11. Moreover, since graphite has good elasticity, the graphite support plate 30 can not only support the palladium tube 11 well, but also prevent the palladium tube 11 from vibrating, thereby avoiding friction between adjacent palladium tubes 11, and effectively prolonging the service life of the palladium tube assembly 10. In this embodiment, the graphite support plate 30 has two pieces, including a first support plate close to the mounting plate 20 and a second support plate far from the mounting plate 20.

Referring to fig. 7, fig. 2 and fig. 1, a receiving cavity 401 is disposed in the housing 40 to receive the palladium tube assembly 10, the mounting plate 20 and the graphite support plate 30. The periphery of the graphite support plate 30 tightly abuts against the wall of the accommodating cavity 401 to prevent the hydrogen-rich mixed gas from flowing into the gap between the graphite support plate 30 and the wall of the accommodating cavity 401. The housing 40 includes a first housing 41 and a second housing 42 coupled to the first housing 41. The first housing 41 is provided with a first receiving chamber 411, a first flange 412, an inlet 413 for introducing a hydrogen-rich gas mixture, and an outlet 414 for discharging off-gas. The tail gas refers to the non-hydrogen-rich gas remaining after the hydrogen-rich mixed gas is filtered by the palladium tube assembly 10. The second housing 42 is provided with a second receiving chamber 421, a second flange 422, and a gas outlet 423 for outputting purified hydrogen gas. The first accommodating cavity 411 and the second accommodating cavity 421 together form the accommodating cavity 401, and the palladium tube assembly 10 and the graphite support plate 30 are accommodated in the first accommodating cavity 411. The first and

second flanges

412 and 422 are fixed together by screws, so that the first and

second housings

41 and 42 are formed integrally. Because the first shell 41 and the second shell 42 are fixedly connected by flanges, the palladium tube assembly 10 is conveniently and fixedly installed in the shell 40, and meanwhile, the later-stage disassembly maintenance or disassembly and recovery are also convenient. The first flange 412 is provided with a first abutting portion 4121, the second flange 422 is provided with a second abutting portion 4221, and the first abutting portion 4121 and the second abutting portion 4221 abut against the mounting plate 20 together to seal and fix the mounting plate 20. In this embodiment, the cross sections of the first abutting portion 4121 and the second abutting portion 4221 are L-shaped. Graphite gaskets (not shown) are respectively arranged between the first abutting portion 4121 and the mounting plate 20 and between the second abutting portion 4221 and the mounting plate 20 to enhance the sealing effect. The air inlet 413 is located at an end of the first housing 41 facing away from the mounting plate 20, and the air outlet 414 is located between the mounting plate 20 and the first support plate.

When the purifier 100 of the present invention is used, a hydrogen-rich gas mixture is first injected into the first receiving chamber 411 through the gas inlet 413. After the hydrogen-rich mixed gas is filtered by the palladium tube assembly 10, the hydrogen gas enters the blind groove 1113 through the palladium membrane 112, enters the second containing cavity 421 through the open end 1111, and then is output outwards through the gas outlet 423. The tail gas formed after the hydrogen-rich mixed gas is filtered by the palladium tube assembly 10 is discharged through the air holes 32 and the exhaust port 414.

Compared with the prior art, the utility model discloses purifier 100 supports palladium pipe 11 through graphite backup pad 30 to effectively prevent that palladium pipe 11 from taking place vibrations, avoided producing the friction between the adjacent palladium pipe 11, thereby effectively improved purifier 100's life.

The above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A purifier, comprising:

the palladium tube assembly comprises a plurality of palladium tubes arranged in an array;

the mounting plate comprises a plurality of mounting holes arranged in an array, and one end of the palladium tube is mounted in the mounting holes;

the graphite supporting plate is used for supporting the palladium tube assembly and comprises a plurality of fixing holes arranged in an array, and the palladium tubes penetrate through the fixing holes to be fixed by the graphite supporting plate; and

the shell is internally provided with an accommodating cavity for accommodating the palladium tube assembly, the mounting plate and the graphite support plate.

2. The purifier of claim 1, wherein: the graphite support plate is in a circular plate shape, and the periphery of the graphite support plate tightly abuts against the cavity wall of the accommodating cavity; and a plurality of air holes are formed in the graphite supporting plate.

3. The purifier of claim 2, wherein: the air holes are provided with three fixing holes adjacent to the air holes, and the three fixing holes form an equilateral triangle.

4. The purifier of claim 3, wherein: the circle center of the air hole is positioned on the center of the equilateral triangle.

5. The purifier of claim 1, wherein; the shell comprises a first shell and a second shell matched with the first shell; the first shell is provided with a first flange, and the second shell is provided with a second flange; the first flange and the second flange are fixed together through screws, so that the first shell and the second shell are integrated.

6. The purifier of claim 5, wherein: the first flange is provided with a first abutting part, and the second flange is provided with a second abutting part; the first abutting portion and the second abutting portion abut against the mounting plate together to seal and fix the mounting plate.

7. The purifier of claim 6, wherein: graphite gaskets are respectively arranged between the first abutting part and the mounting plate and between the second abutting part and the mounting plate.

8. The purifier of claim 5, wherein: the first shell is provided with a first accommodating cavity, the second shell is provided with a second accommodating cavity, and the first accommodating cavity and the second accommodating cavity jointly form the accommodating cavity; the graphite support plate is positioned in the first accommodating cavity.

9. The purifier of claim 8, wherein: the graphite support plate comprises a first support plate close to the mounting plate and a second support plate far away from the mounting plate; the first shell is provided with an air inlet for inputting the hydrogen-rich mixed gas and an exhaust outlet for exhausting tail gas; the air inlet is located first casing deviates from the one end of mounting panel, the gas vent is located between mounting panel and the first backup pad.

10. The purifier of claim 1, wherein: the palladium tube comprises a support body and a palladium membrane arranged on the surface of the support body.