PROX reactor
By introducing a multi-reaction chamber and S-shaped flow channel design into the PROX reactor, the problem of poor purification effect caused by the single reaction chamber design was solved, achieving more efficient CO purification and ensuring the normal operation of the fuel cell system.
Patent Information
- Application Number
- CN202520157601.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-01-23
AI Technical Summary
The single-chamber design of the existing PROX reactor results in a short hydrogen-rich gas travel distance, poor purification effect, and inability to effectively purify CO in the fuel cell system.
It adopts a multi-reaction chamber design, including the PROX first reaction chamber, the PROX second reaction chamber and the PROX third reaction chamber. Combined with the S-shaped flow channel and aluminum alloy shell, it increases the gas purification stroke and improves catalytic efficiency through nickel foam mesh and air inlet pipe.
It improves the purification effect of hydrogen-rich gas, has a compact structure, small size, low processing cost and high heat dissipation efficiency, ensuring the normal operation of fuel cell systems.
Smart Images
Figure CN223788311U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to PROX reactor technical field especially relates to a PROX reactor. BACKGROUND
[0002] PROX reactor, full name is "preferential oxidation reactor", its main function is in hydrogen-rich gas preferential oxidation carbon monoxide, converts it into carbon dioxide, thereby purifying hydrogen, ensures the normal operation of fuel cell. Since proton exchange membrane fuel cell is very sensitive to CO, even extremely low concentration CO can cause battery performance to drop significantly even poisoning, therefore, PROX reactor plays a vital role in fuel cell system.
[0003] At present, the PROX reactor on the market adopts single reaction cavity to purify hydrogen-rich gas, carbon monoxide in oxidizing gas. But the setting of single reaction cavity leads to short moving stroke of hydrogen-rich gas, which leads to poor purification effect, therefore, a kind of PROX reactor is presented. UTILITY MODEL CONTENT
[0004] The utility model discloses to solve the shortcomings in the prior art, and a kind of PROX reactor is presented.
[0005] In order to realize the above-mentioned purpose, the utility model has adopted the following technical scheme: a kind of PROX reactor, including reactor shell, the inside of the reactor shell is sequentially provided with PROX first reaction cavity, PROX second reaction cavity and PROX third reaction cavity from right to left, PROX first reaction cavity is provided with PROX first through-hole being connected with PROX second reaction cavity in the bottom of one side inner wall, the top of one side inner wall of PROX second reaction cavity is provided with PROX second through-hole being connected with PROX third reaction cavity;
[0006] The outer surface of the reactor shell one side is fixedly connected with hydrogen-rich gas inlet pipe, and hydrogen-rich gas inlet pipe is communicated with PROX first reaction cavity, the outer surface of the reactor shell one side top is fixedly connected with PROX first air inlet pipe, and PROX first air inlet pipe is communicated with PROX first reaction cavity, the outer surface of the reactor shell one side bottom is fixedly connected with PROX second air inlet pipe, and PROX second air inlet pipe, and PROX second air inlet pipe is communicated with PROX second reaction cavity, the outer surface of the reactor shell one side top is fixedly connected with PROX third air inlet pipe, and PROX third air inlet pipe is communicated with PROX third reaction cavity, the outer surface of the reactor shell one side is fixedly connected with hydrogen-rich gas outlet pipe, and hydrogen-rich gas outlet pipe is communicated with PROX third reaction cavity;
[0007] The outer surface of the reactor shell both sides is fixedly connected with sealing plate.
[0008] Further, the top of the reactor shell is fixedly connected with a PROX first large sealing plate and a PROX first small sealing plate, the PROX first large sealing plate is matched with the PROX first reaction cavity and the PROX third reaction cavity, and the PROX first small sealing plate is matched with the PROX first reaction cavity, the bottom of the reactor shell is fixedly connected with a PROX second large sealing plate and a PROX second small sealing plate, and the PROX second large sealing plate is matched with the PROX first reaction cavity and the PROX second reaction cavity, and the PROX second small sealing plate is matched with the PROX third reaction cavity.
[0009] Further, the PROX first through hole and the PROX second through hole are both installed with a foamed nickel net.
[0010] Further, the outer surface of the two sealing plates is fixedly connected with rubber pads on one side, and the rubber pads are sealingly abutted with the reactor shell.
[0011] Further, the outer surface of the single sealing plate is fixedly connected with three thermocouple mounting joints on one side, and the three thermocouple mounting joints are respectively located on the inner side of the adjacent PROX first reaction cavity, PROX second reaction cavity and PROX third reaction cavity.
[0012] Further, the reactor shell is rectangular.
[0013] Further, the reactor shell is made of aluminum alloy material.
[0014] Further, the two sealing plates are fixedly connected with the reactor shell by bolts.
[0015] The beneficial effects of the utility model are as follows:
[0016] In use, the PROX reactor is provided with a PROX first reaction cavity, a PROX second reaction cavity, a PROX third reaction cavity, a PROX first air inlet pipe, a PROX second air inlet pipe and a PROX third air inlet pipe, adopts S-shaped flow channel purification, increases the purification stroke of hydrogen-rich gas, improves the purification effect, and the reactor shell is made of a standard rectangular aluminum profile, so that the PROX reactor has the advantages of compact structure, small volume, low processing cost, high heat dissipation efficiency and the like. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical scheme of the utility model, the following will be a brief description of the drawings needed to be used in the specific implementation mode, obviously, the following description of the drawings is only some embodiments of the utility model, for those skilled in the art, under the premise of not paying creative labor, other drawings can also be obtained according to these drawings.
[0018] Fig. 1 : the formal drawing of the utility model;
[0019] Fig. 2 : the perspective view of the utility model.
[0020] Reference signs are as follows:
[0021] 1, reactor shell; 2, PROX second small sealing plate; 3, PROX second large sealing plate; 4, PROX first large sealing plate; 5, PROX first small sealing plate; 6, PROX first reaction cavity; 7, PROX second reaction cavity; 8, PROX third reaction cavity; 9, hydrogen-rich gas inlet pipe; 10, PROX first air inlet pipe; 11, PROX third air inlet pipe; 12, rubber pad; 13, sealing plate; 14, thermocouple mounting connector; 15, PROX second air inlet pipe; 16, foamed nickel mesh; 17, hydrogen-rich gas outlet pipe. DETAILED DESCRIPTION
[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model. In the description of the utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model; the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0023] As Figs. 1-2As shown, it relates to a PROX reactor, comprising a reactor shell 1, the inside of the reactor shell 1 is sequentially provided with a PROX first reaction cavity 6, a PROX second reaction cavity 7 and a PROX third reaction cavity 8 from right to left, a PROX first through hole communicated with the PROX second reaction cavity 7 is arranged on the bottom of the side inner wall of the PROX first reaction cavity 6, a PROX second through hole communicated with the PROX third reaction cavity 8 is arranged on the top of the side inner wall of the PROX second reaction cavity 7, the PROX first through hole and the PROX second through hole are both provided with a foamed nickel mesh 16, the foamed nickel mesh 16 is placed in the PROX first through hole and the PROX second through hole, which plays a role of uniform gas distribution and has good corrosion resistance, so as to effectively prevent the impurity gas in the hydrogen-rich gas from being corroded.
[0024] The outer surface of the reactor shell 1 is fixedly connected with a hydrogen-rich gas inlet pipe 9, and the hydrogen-rich gas inlet pipe 9 is communicated with the PROX first reaction cavity 6, the outer surface of the reactor shell 1 is fixedly connected with a PROX first air inlet pipe 10 at the top, and the PROX first air inlet pipe 10 is communicated with the PROX first reaction cavity 6, the outer surface of the reactor shell 1 is fixedly connected with a PROX second air inlet pipe 15 at the bottom, and the PROX second air inlet pipe 15 is communicated with the PROX second reaction cavity 7, the outer surface of the reactor shell 1 is fixedly connected with a PROX third air inlet pipe 11 at the top, and the PROX third air inlet pipe 11 is communicated with the PROX third reaction cavity 8, the outer surface of the reactor shell 1 is fixedly connected with a hydrogen-rich gas outlet pipe 17, and the hydrogen-rich gas outlet pipe 17 is communicated with the PROX third reaction cavity 8;
[0025] The outer surface of the reactor shell 1 is fixedly connected with a sealing plate 13 on both sides, the two sealing plates 13 are fixedly connected with the reactor shell 1 by bolts, and the bolts can assist in disassembling the sealing plate 13, and the purpose is to fill the catalyst, the outer surface of the two sealing plates 13 is fixedly connected with a rubber pad 12 on one side, and the rubber pad 12 is sealed and abutted with the reactor shell 1, and the rubber pad 12 plays a sealing role.
[0026] The top of the reactor shell 1 is fixedly connected with a PROX first large sealing plate 4 and a PROX first small sealing plate 5, and the PROX first large sealing plate 4 is matched with a PROX second reaction chamber 7 and a PROX third reaction chamber 8, and the PROX first small sealing plate 5 is matched with a PROX first reaction chamber 6; the bottom of the reactor shell 1 is fixedly connected with a PROX second large sealing plate 3 and a PROX second small sealing plate 2, and the PROX second large sealing plate 3 is matched with the PROX first reaction chamber 6 and the PROX second reaction chamber 7, and the PROX second small sealing plate 2 is matched with the PROX third reaction chamber 8; the PROX first large sealing plate 4, the PROX first small sealing plate 5, the PROX second large sealing plate 3 and the PROX second small sealing plate 2 are arranged to seal the three reaction chambers, respectively.
[0027] The outer surface of the single sealing plate 13 is fixedly connected with three thermocouple mounting joints 14, and the three thermocouple mounting joints 14 are located at the inner sides of the adjacent PROX first reaction chamber 6, PROX second reaction chamber 7 and PROX third reaction chamber 8, respectively, for detecting the internal temperature of the three reaction chambers.
[0028] The reactor shell 1 is rectangular, and the reactor shell 1 is made of aluminum alloy material, so that the reactor shell 1 has the advantages of compact structure, small volume, low processing cost and high heat dissipation efficiency.
[0029] Working principle: hydrogen-rich gas enters the PROX first reaction chamber 6 through a hydrogen-rich gas inlet pipe 9, air enters the PROX first reaction chamber 6 through a PROX first air inlet pipe 10, and the air and the catalyst cooperate to purify the hydrogen-rich gas in the PROX first reaction chamber 6, and then the hydrogen-rich gas enters the PROX second reaction chamber 7 through a PROX first through hole, the air enters the PROX second reaction chamber 7 through a PROX second air inlet pipe 15, and the air and the catalyst cooperate to purify the hydrogen-rich gas in the PROX second reaction chamber 7, and then the hydrogen-rich gas enters the PROX third reaction chamber 8 through a PROX second through hole, the air enters the PROX third reaction chamber 8 through a PROX third air inlet pipe 11, and the air and the catalyst cooperate to purify the hydrogen-rich gas in the PROX third reaction chamber 8, and then the hydrogen-rich gas is discharged through a hydrogen-rich gas outlet pipe 17.
[0030] The preferred embodiments disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details and limit the utility model to the specific implementation. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the utility model, so that the person skilled in the art can well understand and use the utility model. The utility model is limited by the claims and the whole scope and equivalents.
Claims
1. A PROX reactor comprising a reactor housing (1), characterized in that: The inside of the reactor shell (1) is sequentially provided with a PROX first reaction cavity (6), a PROX second reaction cavity (7) and a PROX third reaction cavity (8) from right to left, a PROX first through hole is formed in the bottom of the inner wall of one side of the PROX first reaction cavity (6) and is in communication with the PROX second reaction cavity (7), and a PROX second through hole is formed in the top of the inner wall of one side of the PROX second reaction cavity (7) and is in communication with the PROX third reaction cavity (8). The outer surface of the reactor shell (1) is fixedly connected with a hydrogen-rich gas inlet pipe (9) in communication with the PROX first reaction cavity (6), the outer surface of the reactor shell (1) is fixedly connected with a PROX first air inlet pipe (10) at the top and in communication with the PROX first reaction cavity (6), the outer surface of the reactor shell (1) is fixedly connected with a PROX second air inlet pipe (15) at the bottom and in communication with the PROX second reaction cavity (7), the outer surface of the reactor shell (1) is fixedly connected with a PROX third air inlet pipe (11) at the top and in communication with the PROX third reaction cavity (8), and the outer surface of the reactor shell (1) is fixedly connected with a hydrogen-rich gas outlet pipe (17) in communication with the PROX third reaction cavity (8). The outer surface of the reactor shell (1) is fixedly connected with sealing plates (13) on both sides.
2. A PROX reactor according to claim 1, characterized in that: The top of the reactor shell (1) is fixedly connected with a PROX first large sealing plate (4) and a PROX first small sealing plate (5), the PROX first large sealing plate (4) is matched with the PROX second reaction cavity (7) and the PROX third reaction cavity (8), the PROX first small sealing plate (5) is matched with the PROX first reaction cavity (6), the bottom of the reactor shell (1) is fixedly connected with a PROX second large sealing plate (3) and a PROX second small sealing plate (2), the PROX second large sealing plate (3) is matched with the PROX first reaction cavity (6) and the PROX second reaction cavity (7), and the PROX second small sealing plate (2) is matched with the PROX third reaction cavity (8).
3. A PROX reactor according to claim 1, characterized in that: The PROX first through hole and the PROX second through hole are both installed with a foamed nickel mesh (16).
4. A PROX reactor according to claim 1, characterized in that: The outer surface of each of the two sealing plates (13) is fixedly connected with a rubber pad (12) in sealing abutment with the reactor shell (1).
5. A PROX reactor according to claim 1, characterized in that: The outer surface of each of the two sealing plates (13) is fixedly connected with a rubber pad (12) in sealing abutment with the reactor shell (1).
6. A PROX reactor according to claim 1, characterized in that: The reactor shell (1) is rectangular.
7. A PROX reactor according to claim 1, characterized in that: The reactor shell (1) is made of aluminum alloy.
8. A PROX reactor according to claim 1, characterized in that: Both of the sealing plates (13) are fixedly connected with the reactor shell (1) by bolts.