CO preferential catalytic reactor

Abstract

The utility model relates to the field of reactors, in particular to a CO priority catalytic reactor. Comprising a shell and a plurality of catalyst filling pipes, the catalyst filling pipes are arranged on the shell in a penetrating mode, the shell is connected with the catalyst filling pipes in a sealed mode, a hydrogen inlet connector and a hydrogen outlet connector are arranged at the two ends of each catalyst filling pipe respectively, an air inlet connector is arranged at the hydrogen inlet connector, and an air outlet connector is arranged at the air outlet connector. A liquid inlet and a liquid outlet are formed in the shell. Therefore, by arranging the plurality of catalyst filling pipes, the scheme can be adapted to use scenes under different catalyst requirements, single-pipe use and multi-pipe parallel / series use can be realized, a single catalyst can be adopted or multiple catalysts can be switched for use, and the application scenes are wider.

Description

Technical Field

[0001] The utility model relates to the field of reactors, in particular to a CO priority catalytic reactor. Background Art

[0002] At present, proton exchange membrane fuel cells (PEMFCs) are being used in the fields of automobiles, distributed power generation, and mobile devices as an efficient and environmentally friendly energy conversion device. However, hydrogen, the main fuel of PEMFC, often contains trace amounts of carbon monoxide (CO) in practical applications, which not only reduces the performance of PEMFC but also damages its electrolyte membrane. Therefore, the development of a reactor that can effectively remove CO from hydrogen is of great practical significance for the commercial application of PEMFC.

[0003] Common methods for removing CO from PEMFC hydrogen include adsorption, membrane separation and catalytic oxidation. Among them, although catalytic oxidation can remove CO, the traditional reactor has deficiencies in practicality and stability, and it is difficult to meet the strict requirements of PEMFC for hydrogen purity. Therefore, the present invention proposes a novel reactor for preferential oxidation and removal of CO from PEMFC hydrogen, aiming to solve the above problems and further improve the performance and stability of PEMFC. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a CO priority catalytic reactor to solve the problem of low adaptability of traditional reactors.

[0005] The utility model solves the above technical problems with the following technical solutions: a CO priority catalytic reactor, comprising a shell and a plurality of catalyst filling tubes, the catalyst filling tubes being passed through the shell, the shell being sealed and connected to the catalyst filling tubes at the connection, a hydrogen inlet joint and a hydrogen outlet joint being respectively provided at both ends of the catalyst filling tubes, an air inlet joint being provided at the hydrogen inlet joint, and a liquid inlet and a liquid discharge port being provided on the shell.

[0006] Furthermore, the shell is a rectangular cavity structure, one side of the rectangular cavity structure is a detachable mounting plate, and the liquid inlet is arranged on the mounting plate.

[0007] Furthermore, a temperature sensor interface is also provided on the mounting plate.

[0008] Furthermore, a heating rod interface is also provided on the mounting plate.

[0009] Furthermore, a liquid level meter interface and a liquid replenishment interface are also provided on the mounting plate.

[0010] Furthermore, a safety valve interface is also provided on the mounting plate.

[0011] Furthermore, the hydrogen inlet joint is provided with an air inlet joint, which includes a joint sealing plate, a compression sleeve and a filter screen. The filter screen is arranged inside the joint sealing plate, the compression sleeve is arranged inside the joint sealing plate, and the compression sleeve is used to fix the filter screen.

[0012] The utility model provides a CO priority catalytic reactor, including a shell and a plurality of catalyst filling tubes, the catalyst filling tubes are inserted into the shell, the shell and the catalyst filling tubes are sealed at the connection, the two ends of the catalyst filling tube are respectively provided with a hydrogen inlet joint and a hydrogen outlet joint, the hydrogen inlet joint is provided with an air inlet joint, and the shell is provided with a liquid inlet and a liquid outlet. In this way, the scheme can adapt to the use scenarios under different catalyst needs by providing a plurality of catalyst filling tubes, can be used as a single tube and multiple tubes in parallel / series, can use a single catalyst or multiple catalysts for switching, and has a wider range of application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of a CO priority catalytic reactor of the utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of a CO priority catalytic reactor of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of a hydrogen inlet joint of a CO priority catalytic reactor of the utility model.

[0016] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0017] 1. Shell, 2. Catalyst filling tube, 3. Hydrogen inlet connector, 301. Connector sealing plate, 302. Press sleeve, 303. Filter, 4. Hydrogen outlet connector, 5. Air inlet connector, 6. Liquid inlet, 7. Liquid drain, 8. Mounting plate, 9. Temperature sensor interface, 10. Heating rod interface, 11. Liquid level gauge interface, 12. Safety valve interface. DETAILED DESCRIPTION

[0018] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0019] In the description of the present invention, it should be understood that the terms "upper", "lower", "center", "inside", "outside", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] like Figure 1-Figure 3 As shown, the utility model provides a CO priority catalytic reactor, including a shell and a plurality of catalyst filling tubes, the catalyst filling tubes are inserted into the shell, the shell and the catalyst filling tubes are sealed at the connection, the two ends of the catalyst filling tube are respectively provided with a hydrogen inlet joint and a hydrogen outlet joint, the hydrogen inlet joint is provided with an air inlet joint, and the shell is provided with a liquid inlet and a liquid outlet. In this way, by providing a plurality of catalyst filling tubes, the scheme can adapt to the use scenarios under different catalyst requirements, can be used as a single tube and multiple tubes in parallel / series, can use a single catalyst or multiple catalysts for switching, and has a wider range of application scenarios.

[0022] It is necessary to additionally explain that: when in use, first remove the hydrogen inlet joint / hydrogen outlet joint, fill the CO preferential oxidation catalyst into the catalyst filling tube, and after filling, install the hydrogen inlet joint / hydrogen outlet joint, hydrogen enters through the hydrogen inlet joint, and the air inlet joint is connected and arranged on the hydrogen inlet joint to form a three-way structure. After hydrogen is introduced, under the action of air and CO preferential oxidation catalyst, CO undergoes oxidation reaction to generate carbon dioxide, which forms a mixed gas with hydrogen and enters the fuel cell stack, which will not affect the performance and service life of the fuel cell stack;

[0023] In addition, when the amount of CO preferential oxidation catalyst used is large, you can use Figure 1 The structure shown connects a plurality of catalyst filling tubes in series via an air inlet joint, and realizes the use of a large amount of CO preferential oxidation catalyst via the plurality of catalyst filling tubes, wherein the air is introduced into the air inlet joint near the hydrogen inlet end, and the gas air inlet joint is closed and used only as a passage.

[0024] The CO priority catalytic reactor of the utility model is as follows: Figure 1-Figure 3 As shown, on the basis of the technical solution described above, it can also be that: the shell is a rectangular cavity structure, one side of the rectangular cavity structure is a detachable mounting plate, and the liquid inlet is arranged on the mounting plate. Since the rectangular cavity needs to be filled with coolant, a rectangular cavity structure is adopted to make it have a larger capacity and higher heat exchange efficiency. The design of the detachable mounting plate makes the installation and disassembly of the liquid inlet more convenient, and facilitates maintenance and replacement. In actual use, the coolant enters the rectangular cavity through the liquid inlet to cool the CO priority catalytic reactor, thereby ensuring the stability and life of the catalytic reactor.

[0025] In addition, the utility model can be further improved, for example: a liquid outlet is provided on the other side of the rectangular cavity to discharge the cooled coolant, so that the flow and circulation of the coolant can be better controlled and the heat exchange efficiency can be improved.

[0026] The CO priority catalytic reactor of the utility model is as follows: Figure 1-Figure 3 As shown, based on the technical solution described above, it can also be that: the mounting plate is also provided with a temperature sensor interface. By adding the temperature sensor interface, the CO priority catalytic reactor of the utility model can monitor the temperature state inside the reactor in real time. This improvement not only improves the intelligence level of the equipment, but also enhances the safety and controllability of the reaction process.

[0027] The temperature sensor is placed inside the shell through the temperature sensor interface to collect real-time temperature data inside the reactor and transmit the data to the control system for analysis and processing. The control system can adjust the reaction conditions in time according to the received temperature data to ensure that the catalytic reaction is carried out within the optimal temperature range.

[0028] In addition, by setting up a temperature sensor interface on the mounting plate, it is also convenient to connect to external temperature monitoring equipment, such as a temperature recorder or a remote monitoring system. In this way, users can not only understand the temperature conditions inside the reactor in real time, but also remotely control and monitor the reactor through the remote monitoring system, which greatly improves the flexibility and convenience of the equipment. The CO priority catalytic reactor of this scheme not only improves the intelligence and safety of the equipment, but also provides users with a more convenient operation and monitoring experience. This improvement makes the application of this reactor in industrial production more extensive and reliable.

[0029] The CO priority catalytic reactor of the utility model is as follows: Figure 1-Figure 3 As shown, based on the technical solution described above, it can also be that: a heating rod interface is also provided on the mounting plate.

[0030] The setting of the heating rod interface enables the CO priority catalytic reactor to be heated by an external heating rod when necessary, thereby improving the reaction efficiency of the catalytic reactor. The design of the heating rod interface is reasonable and easy to install, and can effectively connect the heating rod to the catalytic reactor, so that the heat generated by the heating rod can be evenly transferred to the catalyst inside the catalytic reactor, thereby achieving efficient catalytic reaction.

[0031] In practical applications, when the ambient temperature of the catalytic reactor is low, or when the catalytic reaction rate needs to be quickly increased, the catalytic reactor can be heated by an external heating rod. The introduction of the heating rod interface not only improves the adaptability and flexibility of the catalytic reactor, but also makes the operation of the catalytic reactor more convenient and efficient. The CO priority catalytic reactor of this scheme improves the adaptability and flexibility of the catalytic reactor by introducing optimized designs such as the heating rod interface, making the operation of the catalytic reactor more convenient and efficient, and providing more reliable and effective technical support for applications in industrial production and environmental protection.

[0032] The CO priority catalytic reactor of the utility model is as follows: Figure 1-Figure 3 As shown, on the basis of the technical solution described above, it can also be that: a liquid level gauge interface and a liquid replenishment interface are also provided on the mounting plate. In practical applications, in order to more accurately control the operating state of the CO priority catalytic reactor and improve the reaction efficiency, the utility model further designs a liquid level gauge interface and a liquid replenishment interface. The setting of the liquid level gauge interface allows the staff to monitor the liquid level in the reactor in real time. By connecting to the liquid level gauge, the liquid height information inside the reactor can be obtained in real time, thereby judging the state of the reaction. When the liquid level is too low, the liquid can be replenished in time to ensure the continuity and stability of the reaction.

[0033] The setting of the refill interface makes it convenient to add liquid to the reactor when needed. The refill interface is usually connected to the refill device. When the liquid level meter detects that the liquid level is too low, the refill device will automatically start and add an appropriate amount of liquid to the reactor through the refill interface. The refill process can be automatically controlled without manual intervention, which greatly improves work efficiency and safety.

[0034] In this solution, the liquid infusion interface and the liquid inlet can share a passage, that is, a tee can be used to achieve this.

[0035] The CO priority catalytic reactor of the utility model is as follows: Figure 1-Figure 3As shown, based on the technical solution described above, it can also be that: a safety valve interface is also provided on the mounting plate. The setting of the safety valve is intended to ensure the safety of the CO priority catalytic reactor during operation. The safety valve is an important safety protection device that can automatically close or release pressure in abnormal conditions such as excessive pressure or overheating inside the equipment, thereby preventing equipment damage or accidents.

[0036] The CO priority catalytic reactor of the utility model is as follows: Figure 1-Figure 3 As shown, on the basis of the technical solution described above, it can also be: the air inlet joint is provided at the hydrogen inlet joint, including a joint sealing plate, a compression sleeve and a filter screen, the filter screen is arranged inside the joint sealing plate, the compression sleeve is arranged inside the joint sealing plate, and the compression sleeve is used to fix the filter screen. The joint sealing plate is made of corrosion-resistant and high-temperature resistant materials to ensure stable operation during the reaction process. The design of the joint sealing plate fully considers the uniformity and smoothness of gas flow to ensure that hydrogen and air can be evenly mixed and improve the efficiency of the catalytic reaction. The compression sleeve is made of elastic material, which can fit the joint sealing plate tightly during installation, effectively fix the filter screen, and prevent it from loosening or falling off. At the same time, the elasticity of the compression sleeve can also absorb the vibration and impact generated during gas flow to a certain extent, protecting the joint sealing plate and the filter screen from damage. The filter screen is made of a fine metal mesh or fiber mesh, which can filter out impurities and particulate matter in the gas, prevent them from entering the interior of the catalytic reactor and causing damage to the catalyst, and also prevent the catalyst from flowing into the stack with the airflow, thereby ensuring the service life of the stack. The setting of the filter not only improves the service life of the catalytic reactor, but also ensures the stability and reliability of the catalytic reaction.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A CO preferential catalytic reactor, characterized in that: It includes a shell and multiple catalyst filling tubes, the catalyst filling tubes are inserted into the shell, the shell is sealed and connected to the catalyst filling tubes, two ends of the catalyst filling tubes are respectively provided with a hydrogen inlet joint and a hydrogen outlet joint, the hydrogen inlet joint is provided with an air inlet joint, and the shell is provided with a liquid inlet and a liquid outlet.

2. The CO preferential catalytic reactor according to claim 1, characterized in that: The shell is a rectangular cavity structure, one side of the rectangular cavity structure is a detachable mounting plate, and the liquid inlet is arranged on the mounting plate.

3. The CO preferential catalytic reactor according to claim 2, characterized in that: The mounting plate is also provided with a temperature sensor interface.

4. The CO preferential catalytic reactor according to claim 2, characterized in that: The mounting plate is also provided with a heating rod interface.

5. The CO preferential catalytic reactor according to claim 2, characterized in that: The mounting plate is also provided with a liquid level meter interface and a liquid replenishment interface.

6. The CO preferential catalytic reactor according to claim 2, characterized in that: The mounting plate is also provided with a safety valve interface.

7. The CO preferential catalytic reactor according to any one of claims 1 to 6, characterized in that: The hydrogen inlet joint is provided with an air inlet joint, which includes a joint sealing plate, a compression sleeve and a filter screen. The filter screen is arranged inside the joint sealing plate, the compression sleeve is arranged inside the joint sealing plate, and the compression sleeve is used to fix the filter screen.

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