CN116173687A

CN116173687A - Purifier and gas preparation device

Info

Publication number: CN116173687A
Application number: CN202310202308.3A
Authority: CN
Inventors: 冀中华; 彭伟
Original assignee: Beijing Dongfang Huaqing Technology Co ltd
Current assignee: Beijing Dongfang Huaqing Technology Co ltd
Priority date: 2023-03-02
Filing date: 2023-03-02
Publication date: 2023-05-30

Abstract

The invention provides a purifier and a gas preparation device, wherein the purifier comprises a plurality of purification units which are stacked and fixed, and the purification units comprise: the filter plate assembly is used for filtering the hydrogen-rich gas to form hydrogen and waste gas; the hydrogen runner plate is pressed on one side of the filter plate assembly and is used for receiving and guiding hydrogen; the waste gas plate assembly is pressed on the other side of the filter plate assembly and is used for receiving the hydrogen-rich gas and simultaneously guiding the obtained waste gas; the filter plate component, the hydrogen runner plate and the waste gas plate component are identical in shape, annular parts corresponding to the positions in the direction perpendicular to the purification unit are formed at a plurality of positions on the outer edge of the filter plate component, the annular parts corresponding to the positions form air passages penetrating through the purification unit, different air passages are respectively used for forming a hydrogen-rich channel, a hydrogen channel and a waste gas channel, the hydrogen runner plate is communicated with the hydrogen channel to guide hydrogen to the hydrogen channel, and the waste gas plate component is communicated with the hydrogen-rich channel and the waste gas channel to be used for receiving hydrogen-rich gas and guiding waste gas to the waste gas channel.

Description

Purifier and gas preparation device

Technical Field

The embodiment of the invention relates to the technical field of gas purification, in particular to a purifier and a gas preparation device.

Background

Purification refers to separating impurities from a mixture to increase its purity. The purification is an important chemical method, not only has important roles in chemical research, but also has important roles in chemical production. The purification is the main part of chemical research and chemical production. The invention discloses a method and a purifying device with 100% of film utilization rate, and solves the defect of high pressure loss of a main channel of fluid entering and exiting from the purifier, so that the manufacture of a large purifier is realized.

Disclosure of Invention

The invention provides a purifier capable of realizing the compatibility of purification precision, purification efficiency and purifier volume, and a gas preparation device with the purifier.

In order to solve the above technical problems, an embodiment of the present invention provides a purifier, including a plurality of purification units stacked and fixedly connected, where the purification units include:

the filter plate assembly is used for filtering the hydrogen-rich gas to form hydrogen and waste gas;

the hydrogen runner plate is pressed on one side of the filter plate assembly and is used for receiving and guiding the hydrogen;

the waste gas plate assembly is pressed on the other side of the filter plate assembly and is used for receiving the hydrogen-rich gas, so that the hydrogen-rich gas is fully contacted with the filter plate assembly, and the obtained waste gas is guided;

the filter plate component, the hydrogen runner plate and the waste gas plate component are identical in shape, annular parts corresponding to the positions in the direction perpendicular to the purification unit are respectively formed at a plurality of positions on the outer edge, the annular parts corresponding to the positions form air passages penetrating through the purification unit, different air passages are respectively used for forming a hydrogen-rich channel, a hydrogen channel and a waste gas channel, the hydrogen runner plate is communicated with the hydrogen channel so as to guide the hydrogen to the hydrogen channel, and the waste gas plate component is communicated with the hydrogen-rich channel and the waste gas channel so as to be used for receiving the hydrogen-rich gas and guiding the waste gas to the waste gas channel.

As an optional embodiment, the edge of the hydrogen runner plate is provided with a hydrogen tank for containing leaked hydrogen, a first air hole communicated with the hydrogen tank for guiding out the leaked hydrogen, at least part of the edge of the exhaust plate assembly is provided with an exhaust gas tank for containing leaked exhaust gas, and the exhaust plate assembly, the hydrogen runner plate and the filter plate assembly are respectively provided with a second air hole, and the exhaust gas tank is communicated with the second air holes so as to guide out the leaked exhaust gas through a plurality of the second air holes.

As an optional embodiment, the filter plate assembly includes at least one mesh plate, a hydrogen permeable membrane connected to the mesh plate, and a membrane support frame of the hydrogen permeable membrane, where the mesh plate, the hydrogen permeable membrane, and the membrane support frame are identical in shape to the filter plate assembly, the hydrogen runner plate, and the exhaust gas plate assembly, and are fixedly connected to each other;

the edge of the mesh plate, the hydrogen permeable membrane and the membrane supporting frame is provided with annular parts corresponding to the air passages, the mesh plate comprises one or two pieces, when the mesh plate is one piece, the mesh plate is connected with one side of the membrane supporting frame, and when the mesh plate is two pieces, the hydrogen permeable membrane and the membrane supporting frame of the hydrogen permeable membrane are clamped between the two mesh plates.

As an optional embodiment, the hydrogen flow passage plate is sunk inwards towards one side of the filter plate assembly to form a plurality of hydrogen flow passages, and the edge of the hydrogen flow passage plate is provided with a strip-shaped hydrogen groove, a first air hole communicated with the hydrogen groove and a hydrogen air hole communicated with the hydrogen passage and the hydrogen flow passage;

the exhaust gas plate assembly comprises an exhaust gas flow passage plate and an exhaust gas end plate, the exhaust gas flow passage plate is pressed on the other side of the filter plate assembly, the exhaust gas flow passage plate is inwards sunken towards one side of the filter plate assembly to form a plurality of gas flow passages, and the exhaust gas grooves are formed in the edges of the exhaust gas flow passage plate;

the edge of one side of the exhaust end plate, which faces the exhaust flow passage plate, is provided with a hydrogen-rich gas hole and a first diversion trench which are communicated with the hydrogen-rich channel, and an exhaust gas hole and a second diversion trench which are communicated with the exhaust channel;

the exhaust gas flow channel plate is provided with an air inlet hole corresponding to the first diversion trench and communicated with the first diversion trench and the gas flow channel, so that the hydrogen-rich gas is introduced into the gas flow channel from the hydrogen-rich gas channel, and simultaneously, the exhaust gas flow channel plate is provided with an air outlet hole corresponding to the second diversion trench and communicated with the gas flow channel, so that the exhaust gas is introduced into the exhaust gas channel.

As an optional embodiment, the purification unit further includes a smoke plate assembly having the same shape as the filter plate assembly, the hydrogen flow channel plate and the exhaust gas plate assembly, and the smoke plate assembly is pressed against one side of the hydrogen flow channel plate, which is away from the filter plate assembly, and is used for introducing and guiding out high-temperature smoke gas so as to preheat the purification unit, an annular portion communicated with the air channel is provided at the edge of the smoke plate assembly corresponding to each air channel, and the first air hole and the second air hole are correspondingly provided at the positions corresponding to each first air hole and the second air hole;

the flue gas plate assembly comprises a hydrogen-flue gas end plate and a flue gas end plate, wherein the hydrogen-flue gas end plate is pressed on the hydrogen flow passage plate, the flue gas end plate is pressed on the hydrogen-flue gas end plate, a plurality of flue gas flow passages are formed by inwards sinking one side of the hydrogen-flue gas end plate towards the flue gas end plate, grooves which are respectively communicated with the outside and the flue gas flow passages are correspondingly formed in the side edges of the hydrogen-flue gas end plate and the flue gas end plate along the direction vertical to the purification unit, and the grooves corresponding to the positions are matched and encircled into flue gas holes.

As an optional embodiment, two adjacent purification units are connected by using an intermediate end plate, the shape of the intermediate end plate is the same as that of the filter plate assembly, the hydrogen flow passage plate and the waste gas plate assembly, the edge of the intermediate end plate corresponds to each air passage, an annular part communicated with the air passage is arranged at the position corresponding to each air passage, an air port communicated with the air passage and used for conveying different gases is arranged at the position corresponding to each air passage, the first air hole and the second air hole are respectively arranged at the positions corresponding to the first air hole and the second air hole, and a hydrogen tank and a waste gas tank are respectively arranged at two sides of the intermediate end plate.

As an alternative embodiment, the edge of each annular part adjacent to the corresponding plate body is provided with a slot, the slots of the annular parts positioned in the same air passage are mutually communicated to form a long sheet slot, the hydrogen gas holes, the hydrogen rich gas holes and the waste gas holes are communicated with the long sheet slot, and the long sheet slot is internally matched and inserted with a gas filter sheet.

As an optional embodiment, the plurality of purification units are matched to form a purification monomer, the purifier comprises a plurality of purification monomers, and the purification monomers, the purification units and the plate bodies are connected in a manner of welding by arranging metal plating layers; two adjacent purification monomers are connected through graphite paper, the graphite paper is identical to the filter plate component, the hydrogen runner plate and the waste gas plate component in shape, and the edge of the graphite paper corresponds to each air passage and is provided with an annular part communicated with the air passage.

As an optional embodiment, the purifier further comprises a top plate and a bottom plate for clamping a plurality of the purifying units, the top plate and the bottom plate have the same shape as the filter plate assembly, the hydrogen runner plate and the waste gas plate assembly, and screw holes are arranged at positions corresponding to each air passage and are used for penetrating bolts, the rod diameter of each bolt is smaller than the inner diameter of the corresponding air passage, so that gas can flow through gaps between the air passage and the corresponding bolts, and two ends of each bolt extend out of the top plate and the bottom plate and are in sealing connection with the corresponding top plate or the corresponding bottom plate based on nuts and sealing gaskets;

the top plate and the bottom plate are provided with gas pipelines which are respectively communicated with the first air holes and the second air holes and used for conveying gas, a plurality of channels with one ends respectively communicated with corresponding air passages and the other ends respectively extending to the outside of the top plate are formed in the top plate, and the channels are respectively used for conveying hydrogen-rich gas, hydrogen and waste gas.

Another embodiment of the present invention also provides a gas production apparatus comprising a purifier as described above.

Based on the disclosure of the above embodiment, it can be known that the purifier has the advantages of simple overall structure and easy preparation, and the annular portions corresponding to the positions can form through air passages for conveying hydrogen-rich gas, hydrogen gas and waste gas respectively after the plates in the purification unit are stacked by arranging the annular portions at the edges of the plates in the purification unit. The annular part is positioned at the edge of the plate body, so that the setting size is not limited, and the annular part can be set according to the requirement, so that the air flow can be increased based on the air passage, and meanwhile, the filtering area of the filter plate assembly is maximized, and the purification efficiency of the purifier can be obviously improved no matter the volume of the purifier. In addition, set up the hydrogen tank on the hydrogen runner board, set up the waste gas groove on the waste gas runner board, all set up the first gas pocket with the hydrogen tank intercommunication on each plate body simultaneously, with the second gas pocket of waste gas groove intercommunication, can make when there is gas leakage in the runner, if hydrogen leakage, when waste gas leakage, all accessible corresponding gas tank, gas pocket are derived, and can not influence the purity of gas in the air flue.

Drawings

Fig. 1 is a schematic diagram of a purifier according to an embodiment of the present invention.

Fig. 2 is a schematic diagram showing an exploded structure of a purifier according to an embodiment of the present invention.

Fig. 3 is a schematic diagram of another construction of a purifier according to an embodiment of the present invention.

Fig. 4 is a schematic view of a part of the structure of a purifier according to an embodiment of the present invention.

Fig. 5 is a schematic diagram of the structure of a purification unit in accordance with an embodiment of the present invention.

Fig. 6 is an exploded view of the structure of a purification unit in an embodiment of the present invention.

Fig. 7 is another angular structure diagram of fig. 6.

Fig. 8 is another structural exploded view of a purification unit in an embodiment of the present invention.

Fig. 9 is a schematic diagram of a purification unit in accordance with another embodiment of the present invention.

Fig. 10 is a schematic diagram of a purifier according to another embodiment of the present invention.

Fig. 11 is an exploded view of a purifier according to another embodiment of the present invention.

Fig. 12 is a schematic structural view of an intermediate end plate in an embodiment of the present invention.

Fig. 13 is a schematic diagram of the structure of a purification unit in accordance with another embodiment of the present invention.

Fig. 14 is a schematic view showing the structure of an intermediate end plate in another embodiment of the present invention.

Fig. 15 is a schematic view showing the structure of a purifier according to another embodiment of the present invention.

Reference numerals:

1-a purification unit; 2-an annular portion; 3-a hydrogen-rich gas channel; 4-hydrogen channel; 5-an exhaust gas channel; 6-screen plate; 7-a hydrogen permeable membrane; 8-a membrane support frame; 9-a hydrogen flow channel plate; 10-flue gas flow passage; 11-hydrogen gas holes; 12-an exhaust gas flow-path plate; 13-an exhaust end plate; 14-gas flow channels; 15-a first diversion trench; 16-an air inlet hole; 17-a second diversion trench; 18-an air outlet hole; 19-hydrogen-flue gas end plate; 20-smoke holes; 21-an intermediate end plate; 22-pores; 23-slots; 24-graphite paper; 25-top plate; 26-a bottom plate; 27-a bolt; 28-nut; 29-a gasket; 30-channel; 31-monomer; 32-a flue gas end plate; 33-a third diversion trench; 34-a hydrogen tank; 35-a first air hole; 36-an exhaust gas tank; 37-second air holes; 38-gas pipeline

Detailed Description

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings, but not limiting the invention.

It should be understood that various modifications may be made to the embodiments disclosed herein. Therefore, the following description should not be taken as limiting, but merely as exemplification of the embodiments. Other modifications within the scope and spirit of this disclosure will occur to persons of ordinary skill in the art.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and, together with a general description of the disclosure given above and the detailed description of the embodiments given below, serve to explain the principles of the disclosure.

These and other characteristics of the invention will become apparent from the following description of a preferred form of embodiment, given as a non-limiting example, with reference to the accompanying drawings.

It is also to be understood that, although the invention has been described with reference to some specific examples, a person skilled in the art will certainly be able to achieve many other equivalent forms of the invention, having the characteristics as set forth in the claims and hence all coming within the field of protection defined thereby.

The above and other aspects, features and advantages of the present disclosure will become more apparent in light of the following detailed description when taken in conjunction with the accompanying drawings.

Specific embodiments of the present disclosure will be described hereinafter with reference to the accompanying drawings; however, it is to be understood that the disclosed embodiments are merely examples of the disclosure, which may be embodied in various forms. Well-known and/or repeated functions and constructions are not described in detail to avoid obscuring the disclosure in unnecessary or unnecessary detail. Therefore, specific structural and functional details disclosed herein are not intended to be limiting, but merely serve as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present disclosure in virtually any appropriately detailed structure.

The specification may use the word "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," which may each refer to one or more of the same or different embodiments in accordance with the disclosure.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 8, an embodiment of the present invention provides a purifier including a plurality of purification units 1 stacked and fixedly connected, wherein the purification units 1 include:

the hydrogen runner plate 9 is pressed on one side of the filter plate assembly and is used for receiving and guiding hydrogen;

the filter plate component, the hydrogen flow channel plate 9 and the waste gas plate component are identical in shape, annular parts 2 corresponding to the positions in the direction perpendicular to the purification unit 1 are respectively formed at a plurality of positions on the outer edge, the annular parts 2 corresponding to the positions form air passages penetrating through the purification unit 1, different air passages are respectively used for forming a hydrogen-rich channel 3, a hydrogen channel 4 and a waste gas channel 5, the hydrogen flow channel plate 9 is communicated with the hydrogen channel 4 so as to guide hydrogen into the hydrogen channel 4, and the waste gas plate component is communicated with the hydrogen-rich channel 3 and the waste gas channel 5 so as to be used for receiving hydrogen-rich gas and guiding waste gas into the waste gas channel 5.

For example, the purifier may include one or more purification units 1, the specific number of which may be increased or decreased as desired. Each purification unit 1 is identical and includes a filter plate assembly, a hydrogen flow channel plate 9 and an exhaust gas plate assembly which are identical in shape and size, for example, all have rectangular shapes, circular shapes, even special shapes, etc., and is not particularly limited. The shape and the size of each plate body are limited to be the same, so that the process difficulty can be greatly reduced, and the sealing connection can be better realized. Rectangular and circular are respectively taken as examples for explanation. In order to increase the air flow and reduce the occupation of the area for purifying and filtering the gas inside the purifying unit 1 so as to maximize the purifying and filtering area, in this embodiment, the annular portions 2 are respectively arranged at a plurality of positions on the edges of the filter plate assembly, the hydrogen flow passage plate 9 and the exhaust gas plate assembly, and the annular portions 2 are not unique in structure, and can be rectangular, circular, special-shaped or the like, so long as the annular portions are annular. Further, the plurality of annular portions 2 are divided into a plurality of groups in a direction perpendicular to the purification unit 1, and each group of annular portions 2 is positioned to correspond to and communicate with each other to form an air passage penetrating through the purification unit 1. The multiple gas passages are respectively used for forming a hydrogen passage 4, a hydrogen-rich passage 3 and an exhaust passage 5 for respectively conveying hydrogen, hydrogen-rich gas and exhaust gas. The ring-shaped portions 2 may be arranged at various positions, for example, if each plate body is rectangular, the ring-shaped portions 2 may be distributed at four corners of the plate body, may be arranged at positions where each side edge is adjacent to a corner, may be shown with reference to the drawings, or may be arranged at the center of a side plate of the plate body, or the like. If each plate body is circular, a plurality of rings can be uniformly distributed on the edge of the circular plate body, for example, the arc center angle between two adjacent ring parts 2 is 90 degrees, and also can be 60 degrees, 45 degrees and the like, and the number of the gas passages is not limited specifically and can be determined according to the actual required number of the gas passages. Further, the number of the hydrogen channels 4, the hydrogen-rich channels 3 and the exhaust channels 5 is also variable, for example, one channel may be provided for each channel, two or more hydrogen channels 4 may be provided, two or more hydrogen-rich channels 3 may be provided, and the like, and the exhaust channels 5 may be similarly provided, and may be specifically determined according to the actual flow rate of each gas. The hydrogen flow channel plate 9 in this embodiment is in communication with the hydrogen channel 4 for guiding hydrogen into the hydrogen channel 4, and the exhaust gas plate assembly is in communication with the hydrogen-rich channel 3 and the exhaust gas channel 5 for receiving the hydrogen-rich gas and guiding exhaust gas into the exhaust gas channel 5.

Based on the disclosure of the above embodiment, it can be known that the purifier provided in this embodiment has the advantages of simple overall structure and easy preparation, and the plurality of annular portions 2 are disposed at the edges of the plates in the purifying unit 1, so that after the plates in the purifying unit 1 are stacked, the annular portions 2 corresponding to the positions can form a through air passage for conveying hydrogen-rich gas, hydrogen gas and waste gas. The annular part 2 is positioned at the edge of the plate body, so that the size is not limited, and the annular part can be arranged according to the requirement, so that the air flow can be increased based on the air passage, the filtering area of the filter plate assembly is maximized, and the purification efficiency of the purifier can be obviously improved no matter the volume of the purifier.

As further shown in fig. 1 to 8, when the shapes of each plate body and the annular portion 2 in the purifying unit 1 are rectangular, and the annular portion 2 is disposed at the top corner of each plate body, it is necessary to "cut off" a portion of the top corner of each plate body and one top corner of the annular portion 2, that is, form the form shown in fig. 4, 5 or 6, and then connect the plate bodies with the top corners cut off respectively with the annular portion 2 correspondingly, so that the structure shown in fig. 4 to 6 in this embodiment can be formed. If the annular portion 2 is disposed at a side edge of the plate body and is adjacent to the top corner of the plate body, even when the annular portion 2 is level with the top corner, the top corners of the annular portion 2 and the plate body can be maintained without cutting, and the specific structure can be referred to as shown in fig. 11.

Further, as shown in fig. 9 and 10, when the plate body is circular, the annular portion 2 may be formed by extending outwardly and parallel along a part of the edge of the plate body to form a plate-shaped extension portion, and then forming through holes in each extension portion, and the specific structure may be as shown in the drawings, while the middle portion of each circular plate body forms a purifying and filtering area.

Continuing with fig. 5 to 8, the filter plate assembly in this embodiment preferably includes two mesh plates 6 and a hydrogen permeable membrane 7 and a membrane support frame 8 of the hydrogen permeable membrane 7 sandwiched between the two mesh plates 6, and the mesh plates 6, the hydrogen permeable membrane 7 and the membrane support frame 8 are the same as the filter plate assembly, the hydrogen flow channel plate 9 and the exhaust gas plate assembly in shape and size, and are fixedly connected with each other. Or may comprise only one mesh plate 6 connected to one side of the membrane support frame 8. The annular parts 2 communicated with the air passages are arranged at the edges of the mesh plate 6, the hydrogen permeable membrane 7 and the membrane supporting frame 8 corresponding to each air passage. Specifically, the hydrogen permeable membrane 7 in this embodiment may be a palladium membrane, although the material is not unique, other materials may be selected to prepare the permeable membrane according to the actual situation, the edge of the membrane is provided with the annular portion 2 made of other materials, and by arranging the annular portion 2 at the edge, the actual use area of the hydrogen permeable membrane 7 can be maximized, so that the utilization rate of the membrane is almost the same, the size of the annular portion 2 itself will not have any influence on the membrane, the application range is wider, and the usability is stronger. In practical application, the two net plates 6, the hydrogen permeable membrane 7 and the membrane supporting frame 8 can be welded, for example, diffusion welding is performed between the plate bodies, and then the peripheries of the plate bodies are welded together to fill up the gaps. The membrane supporting frame 8 is provided for supporting the hydrogen permeable membrane 7 to prevent the membrane from shrinking, shifting and the like due to high temperature and the like, and can also play a role in buffering and prevent the membrane from being stuck on the screen 6 due to heating, thereby influencing the hydrogen filtering effect. In addition, in the embodiment, through welding and fixing all the plate bodies together, all the plate bodies and the film can be firmly connected, so that the sealing effect is achieved, and the leakage of gas is prevented. The above-described structures are all realized based on a metal coating when welding.

Further, as shown in fig. 5 to 8, the hydrogen flow channel plate 9 in the present embodiment is sunk towards one side of the filter plate assembly to form a plurality of hydrogen flow channels, the specific shape of the hydrogen flow channels is not limited, if the hydrogen flow rate is large, a plurality of more tortuous flow channels can be provided to increase the gas storage capacity, and if the hydrogen flow rate is small, a small number of flow channels can be provided, and the tortuosity can also be reduced, specifically. The edge of the hydrogen flow channel plate 9 is also provided with hydrogen gas holes 11 communicated with the hydrogen channels 4 and the flow channels, for example, the hydrogen gas holes 11 are arranged at the edge of the plate body connected with the annular part 2, the hydrogen gas holes 11 at least correspond to the hydrogen channels 4 one by one, and a plurality of hydrogen gas holes 11 can also correspond to one hydrogen channel 4. After the filter plate assembly filters out the hydrogen, the hydrogen flows to each hydrogen hole 11 through the hydrogen flow channel in the hydrogen flow channel plate 9, and then flows to the hydrogen channel 4 through the hydrogen holes 11. As shown in the combined drawings, the hydrogen passages 4 in this embodiment include two, and when the plate body is rectangular, the two hydrogen passages 4 are located at two ends of the diagonal line of the plate body, respectively, which is of course not unique, and only serves as an example.

With continued reference to fig. 5-8, the exhaust gas plate assembly in this embodiment includes an exhaust gas flow channel plate 12 that is capped on the other side of the filter plate assembly and an exhaust gas end plate 13 that is capped on the other side of the exhaust gas flow channel plate 12. The side of the exhaust gas flow field plate 12 facing the filter plate assembly is recessed to form a plurality of gas flow channels 14, and the design concept of the gas flow channels 14 is the same as that of the hydrogen flow channels described above. The edge of one side of the exhaust gas end plate 13 facing the exhaust gas flow channel plate 12 is provided with a hydrogen-rich gas hole 11 and a first diversion trench 15 which are communicated with the hydrogen-rich gas channel 3, meanwhile, the edge of the exhaust gas end plate 13 is also provided with an exhaust gas hole and a second diversion trench 17 which are communicated with the exhaust gas channel 5, the exhaust gas flow channel plate 12 is provided with an air inlet hole 16 which is communicated with the first diversion trench 15 and the gas flow channel 14 corresponding to the first diversion trench 15, and simultaneously, the corresponding second diversion trench 17 is provided with an air outlet hole 18 which is communicated with the second diversion trench 17 and the gas flow channel 14, so that hydrogen-rich gas is led into the gas flow channel 14 from the hydrogen-rich gas channel 3, and meanwhile, exhaust gas is led into the exhaust gas channel 5. That is, the hydrogen-rich gas flows from the hydrogen-rich channel 3 through the hydrogen-rich gas hole 11 and the first diversion trench 15 of the exhaust end plate 13 in sequence, flows into the gas channel 14 through the gas inlet hole 16 on the exhaust gas channel plate 12, fully contacts with the filter plate assembly, then the purified and filtered hydrogen moves towards the hydrogen channel plate 9, and the rest of the exhaust gas flows to the gas outlet hole 18 and the second diversion trench 17 of the exhaust end plate 13 in sequence along the gas channel 14 and then enters the exhaust gas channel 5 to be discharged.

Optionally, continuing to combine with fig. 5 to 8, the purification unit 1 in this embodiment further includes a flue gas plate assembly having the same shape as the filter plate assembly, the hydrogen flow channel plate 9, and the exhaust gas plate assembly, where the gland is on a side of the hydrogen flow channel plate 9 facing away from the filter plate assembly, and is used for introducing and guiding out high-temperature flue gas, so as to preheat the purification unit 1, and an annular portion 2 communicating with each air channel is disposed at an edge of each plate body in the flue gas plate assembly corresponding to each air channel. Specifically, the smoke plate assembly in the present embodiment includes a hydrogen-smoke end plate 19 that is capped on the hydrogen flow path plate 9, and a smoke end plate 32 that is capped on the other side of the hydrogen-smoke end plate 19. The hydrogen-flue gas end plate 19 is sunk inwards towards one side of the flue gas end plate 32 to form a plurality of flue gas flow channels 10, and the design concept of the flue gas flow channels 10 is similar to that of the hydrogen flow channels and the gas flow channels 14, but no large tortuosity or roundabout degree is needed, and because the flue gas flow channels 10 in the embodiment are only used for increasing the residence time of flue gas and uniformly heating the purification unit 1, only the effect is needed to be satisfied, and any flow channel design is needed. Grooves which are respectively communicated with the outside and the flue gas flow channel 10 are correspondingly formed in the side edges of the hydrogen-flue gas end plate 19 and the flue gas end plate 32 along the direction vertical to the purification unit 1, the grooves corresponding to the positions are matched and surrounded to form flue gas holes 20, the flue gas holes 20 can be arranged at positions corresponding to the positions of the flue gas plate assembly, and if the plate body is rectangular, the plate body can be arranged at two side edges which are oppositely arranged, and the like. When the plate body is used as an example, the flue gas enters the flue gas flow channel 10 through the flue gas hole 20 at one side of the flue gas plate assembly, and then is discharged through the flue gas hole 20 at the other opposite side of the flue gas plate assembly, so that heat exchange is completed, heat energy is transferred to other plate bodies of the purification unit 1, the heat efficiency is increased, the heat stress is reduced, and cracks of the plate bodies due to temperature abrupt change and the like are prevented.

Of course, the fume plate assembly may not be provided, and in the purifier with the circular plate body as shown in fig. 9 and 10, the fume plate assembly is not provided. However, this does not mean that the circular plate body purifier cannot be provided with a smoke plate assembly, which is also possible, and the circular plate body purifier of the present embodiment is described only as an example.

Optionally, the hydrogen-flue gas end plate 19 may be disposed on a side facing the hydrogen flow channel plate 9 at a position corresponding to the hydrogen hole 11, and the third diversion trench 33 is communicated with the hydrogen channel 4, so that hydrogen may flow from the hydrogen hole 11 to the third diversion trench 33, and further flow into the hydrogen channel 4 through the third diversion trench 33. Alternatively, the third flow guide groove 33 is not provided, and the hydrogen gas hole 11 may be directly connected to the hydrogen gas passage 4, so that hydrogen gas may directly enter the hydrogen gas passage 4 from the hydrogen gas hole 11.

In another embodiment, as shown in fig. 13, when the plates are fixedly connected, gas leakage is easily caused by poor sealing, for example, gas in a flow channel leaks into an air channel to affect gas purity, or directly leaks to the outside to cause gas source waste, and in order to avoid the phenomenon, the purifier unit in this embodiment is further provided with a leakage prevention module for preventing gas leakage. Specifically, in order to realize the leak-proof module, in this embodiment, at least at the edge of the hydrogen flow channel plate 9, a hydrogen tank 34 for accommodating leaked hydrogen is provided, and a first air hole 35 communicating with the hydrogen tank 34 is provided, where the hydrogen tank 34 may be specifically elongated or other shapes, and the first air hole 35 may be provided at one end of the hydrogen tank 34. The hydrogen tank 34 can also be formed at the edge of each plate body in the filter plate assembly, and the first air holes 35 are formed in the filter plate assembly and each plate body in the flue gas plate assembly, and the positions of the first air holes 35 correspond to each other so as to form a channel for conveying leaked hydrogen after all the plate bodies are connected and pressed, and the first air holes 35 can be formed in a plurality of positions so as to form a plurality of channels after all the plate bodies are connected and pressed. Similarly, to prevent leakage of exhaust gas, at least the exhaust gas flow channel plate of the exhaust gas plate assembly is provided with an exhaust gas channel 36, which may be identical to or different from the hydrogen channel 34, but may be disposed at different positions. Of course, other plates in the exhaust plate assembly, the filter plate assembly may also be provided with the exhaust slot 36, which is not exclusive. Further, the exhaust gas plate assembly, the filter plate assembly and each plate body in the flue gas plate assembly are provided with the second air holes 37 correspondingly, the second air holes 37 can be matched to form a channel for conveying leaked exhaust gas after the plate bodies are connected and pressed, the channel is communicated with the exhaust gas groove 36, and the quantity of the channel is not unique, namely, the quantity of the second air holes 37 formed in each plate body is not unique, and the channel can be determined according to the actual connection condition of the plate bodies.

As shown in fig. 1 to 4, the purifier generally includes a plurality of purifying units 1, and in order to accommodate the plurality of purifying units 1, an intermediate end plate 21 for accommodating the purifying units 1 is provided between two adjacent purifying units 1 in order to avoid the gas flow disorder. As shown in fig. 12, the middle end plate 21 has the same shape as the filter plate assembly, the hydrogen flow path plate 9 and the exhaust gas plate assembly, and an annular part 2 communicated with the corresponding air path is arranged at the edge of the middle end plate corresponding to each air path. Further, the middle end plate 21 is provided with air holes 22 adjacent to each annular portion 2, and each air hole 22 is respectively communicated with a corresponding air passage for the air flowing in each air passage, such as flowing into an adjacent purifying unit 1. Meanwhile, in another embodiment, as shown in fig. 14, the middle end plate 21 is further provided with a first air hole 35 and a second air hole 37 correspondingly, and two sides of the middle end plate are also provided with a hydrogen tank 34 and an exhaust gas tank 36 respectively, so that when two ends of the middle end plate respectively receive two different purification units 1, the middle end plate can be communicated with the hydrogen tank 34 or the exhaust gas tank 36 of the corresponding purification unit 1 to better receive and convey leaked hydrogen or exhaust gas.

Further, in this embodiment, it is further defined that a plurality of purification units 1 may be combined to form a purification unit 31, and the purifier may include one purification unit 31 or may include a plurality of purification units 31. When a plurality of purification units 31 are included, adjacent two purification units 31 can be received by the graphite paper 24. The graphite paper 24 is also the same as the filter plate assembly, the hydrogen runner plate 9 and the waste gas plate assembly in shape, and the edge of the graphite paper is provided with an annular part 2 communicated with the air passages at the position corresponding to each air passage.

Optionally, as shown in fig. 5, in this embodiment, slots 23 are disposed at edges of each annular portion 2 adjacent to the corresponding plate body, the slots 23 of the annular portions 2 in the same air passage are mutually communicated to form long sheet slots 23, the hydrogen gas holes 11, the hydrogen-rich gas holes 11 and the exhaust gas holes are all communicated with the long sheet slots 23, and gas filtering sheets are inserted in the long sheet slots 23 in a matched manner. When each gas passes in and out the corresponding air hole, the gas can be filtered by the gas filter disc, and the obtained hydrogen can be purer through the design of the filter disc and the slot 23 in the embodiment, and the mounting and positioning of each plate body can be limited to a certain extent.

With continued reference to fig. 1 to 3, the purifier in this embodiment further includes a top plate 25 and a bottom plate 26 for clamping the plurality of purification units 1, where the top plate 25 and the bottom plate 26 have the same shape as the filter plate assembly, the hydrogen flow channel plate 9, and the exhaust gas plate assembly, for example, are rectangular, and screw holes are provided at positions of the top plate 25 and the bottom plate 26 corresponding to each air channel for penetrating the bolts 27. The stem diameter of the bolt 27 in this embodiment is smaller than the inner diameter of the corresponding gas passage so that gas can flow through the gap between the gas passage and the bolt 27. In order to ensure sealing performance, in this embodiment, both ends of the bolts 27 extend out of the top plate 25 and the bottom plate 26, and are sealed and connected by nuts 28 and gaskets 29. As shown in the drawing, a plurality of channels 30 with one ends respectively communicated with corresponding air passages and the other ends extending to the outside of the top plate 25 are provided in the top plate 25 in the embodiment, and the channels 30 are respectively used for conveying hydrogen, waste gas and hydrogen-rich gas. The other end of each channel 30 may lead out through a tube to introduce the corresponding gas into the purifier. In addition, in another embodiment, as shown in fig. 15, the top plate 25 and the bottom plate 26 in this embodiment are provided with a first air hole 35, a second air hole 37 at a position corresponding to each passage formed by the first air hole 35, the second air hole 36, and a gas pipe 38 communicating with the first air hole 35, the second air hole 37, respectively, for delivering leaked hydrogen gas or exhaust gas. By the method, pollution caused by leakage of gas to the outside or leakage of different gases to other gas channels and gas passages can be effectively avoided, and gas purity is influenced.

Taking the rectangular purifier as an example, when the purifier in the embodiment participates in practical application, the edges of the plates in each purification unit 1 are firstly abutted against each other and welded, and then the intermediate separator and the graphite paper 24 are welded in a plurality of purification units according to the needs to prepare a plurality of purification units 1 to form a plurality of single bodies 31, and the specific number can be determined according to the practical needs. Then, a plurality of arranged single bodies 31 can be stacked on the bottom plate 26, graphite paper 24 is arranged on one side of the purification single body 31 which is in contact with the bottom plate 26 to seal, when sealing is completed, all the plate bodies are aligned with the bottom plate 26, the top plate 25 is covered, bolts 27 are penetrated at four corners, namely all the air passages, two ends of each bolt 27 are respectively matched and sealed and fastened by sealing nuts and sealing gaskets 29, so that the four air passages are not leaked, the tightening force of each bolt 27 is ensured to be consistent when the bolts 27 are fastened, and the phenomenon of structural deformation caused by uneven stress is avoided.

When the purifier is applied to a gas preparation device, at the initial stage of gas preparation, the whole device needs to be preheated and heated, at the moment, fuel can be combusted in the device to generate high-temperature smoke, the high-temperature smoke passes through a smoke hole 20 and enters a smoke flow channel 10 to heat and exchange heat for the whole purifier, and the smoke after heat exchange is discharged from the smoke hole 20 at the other side of the purifier. When the overall temperature of the device reaches a fixed temperature, hydrogen starts to be prepared. When the device works, a large amount of hydrogen-rich gas is generated, the hydrogen-rich gas enters the hydrogen-rich channel 3 from the hydrogen-rich gas inlet pipe of the top plate 25, flows to the waste gas flow channel plate 12 along the gap between the channel and the screw rod, enters the gas flow channel 14, is fully contacted with the filter plate assembly, and is filtered by the fine holes on the screen plate 6 to form hydrogen and waste gas before reaching the filter membrane, the hydrogen permeates the filter membrane, the other screen plate 6 and then enters the hydrogen flow channel plate 9 along the hydrogen channel 4, the waste gas which does not permeate the filter membrane returns to the gas flow channel 14 again and flows to the waste gas channel 5 to be discharged, and the hydrogen flows from the hydrogen flow channel to the hydrogen channel 4 to be conveyed to the channel in the top plate 25 for conveying the hydrogen, and is conveyed to the corresponding pipeline by the channel.

Another embodiment of the invention also provides a gas preparation apparatus comprising a purifier as described in any one of the embodiments above. For example, the gas production apparatus may be used for producing hydrogen, nitrogen, or the like.

The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention, the scope of which is defined by the claims. Various modifications and equivalent arrangements of this invention will occur to those skilled in the art, and are intended to be within the spirit and scope of the invention.

Claims

1. A purifier comprising a plurality of purification units disposed in a stack and fixedly connected thereto, the purification units comprising:

2. The purifier of claim 1, wherein at least the edge of the hydrogen runner plate is provided with a hydrogen tank for containing leaked hydrogen, a first air hole communicated with the hydrogen tank for guiding out leaked hydrogen, at least part of the edge of the exhaust plate assembly is provided with an exhaust tank for containing leaked exhaust gas, and the exhaust plate assembly, the hydrogen runner plate and the filter plate assembly are respectively provided with a second air hole, and the exhaust tank is communicated with the second air holes so as to guide out leaked exhaust gas through a plurality of the second air holes.

3. The purifier of claim 1, wherein the filter plate assembly comprises at least one mesh plate, a hydrogen permeable membrane connected with the mesh plate and a membrane support frame of the hydrogen permeable membrane, wherein the mesh plate, the hydrogen permeable membrane and the membrane support frame are the same as the filter plate assembly, the hydrogen runner plate and the waste gas plate assembly in shape and are fixedly connected with each other;

4. The purifier of claim 2, wherein the hydrogen runner plate is sunk inwards towards one side of the filter plate assembly to form a plurality of hydrogen runners, and the edge of the hydrogen runner plate is provided with a strip-shaped hydrogen groove, a first air hole communicated with the hydrogen groove and a hydrogen air hole communicated with the hydrogen channel and the hydrogen runners;

5. The purifier of claim 2, wherein the purifying unit further comprises a flue gas plate assembly having the same shape as the filter plate assembly, the hydrogen flow channel plate and the waste gas plate assembly, the flue gas plate assembly is capped on one side of the hydrogen flow channel plate, which is away from the filter plate assembly, and is used for introducing and guiding out high-temperature flue gas so as to preheat the purifying unit, an annular part communicated with the air channel is arranged at the edge of the flue gas plate assembly corresponding to each air channel, and the first air hole and the second air hole are correspondingly arranged at the positions corresponding to each first air hole and the second air hole;

6. The purifier of claim 4, wherein two adjacent purification units are connected by using an intermediate end plate, the intermediate end plate has the same shape as the filter plate assembly, the hydrogen flow passage plate and the waste gas plate assembly, the edge of the intermediate end plate is provided with an annular part communicated with the air passages corresponding to each air passage, communicated air ports for conveying different gases corresponding to each air passage are formed in the positions corresponding to each air passage, the first air hole and the second air hole are also formed in the positions corresponding to each first air hole and the second air hole, and meanwhile, both sides of the intermediate end plate are also provided with a hydrogen tank and a waste gas tank respectively.

7. The purifier of claim 6, wherein each of the annular portions has a slot adjacent to an edge of the corresponding plate body, the slots of the annular portions in the same air passage are mutually communicated to form a long sheet slot, the hydrogen gas holes, the hydrogen-rich gas holes and the exhaust gas holes are all communicated with the long sheet slot, and the long sheet slot is internally matched with and inserted with a gas filter sheet.

8. The purifier according to claim 1 or 6, wherein a plurality of purification units are matched to form a purification monomer, the purifier comprises a plurality of purification monomers, and the purification monomers, the purification units and the plate bodies are connected in a manner of arranging metal plating layers for welding;

two adjacent purification monomers are connected through graphite paper, the graphite paper is identical to the filter plate component, the hydrogen runner plate and the waste gas plate component in shape, and the edge of the graphite paper corresponds to each air passage and is provided with an annular part communicated with the air passage.

9. The purifier of claim 2, further comprising a top plate and a bottom plate for clamping the plurality of purification units, wherein the top plate and the bottom plate have the same shape as the filter plate assembly, the hydrogen flow passage plate and the waste gas plate assembly, and screw holes are arranged at the positions corresponding to each air passage for penetrating bolts, the rod diameter of the bolts is smaller than the inner diameter of the corresponding air passages so that gas can flow through gaps between the air passages and the bolts, and two ends of the bolts extend out of the top plate and the bottom plate and are in sealing connection with the corresponding top plate or the corresponding bottom plate based on nuts and sealing gaskets;

10. A gas production apparatus comprising a purifier according to any one of claims 1 to 9.