On-line reforming hydrogen production device and method for improving combustion performance of methanol fuel engine

Abstract

The present invention relates to an online reforming hydrogen production device and method for improving the combustion performance of a methanol fuel engine, comprising a hydrogen production tank, a feeding component, a reaction chamber, a separation chamber, an air supply pipeline and a control module, wherein the feeding component is installed on the hydrogen production tank, and the reaction chamber and the separation chamber are located inside the hydrogen production tank; the feeding component is connected to the control module for adding reaction materials to the reaction chamber; the two ends of the separation chamber are respectively connected to the reaction chamber and the air supply pipeline, and the other end of the air supply pipeline is connected to the air inlet of the engine, the separation chamber is used to filter the hydrogen generated by the reaction chamber, and an adjustment structure connecting the control module is provided between the separation chamber and the air supply pipeline, which is used to adjust the hydrogen content delivered by the air supply pipeline to the air inlet of the engine. Compared with the prior art, the present invention adjusts the ratio of hydrogen to methanol fuel according to the working conditions of the engine, significantly improves the combustion performance, improves the combustion efficiency, and the adjustment structure is convenient to adjust.

Description

Technical Field

[0001] The invention relates to the technical field of reforming hydrogen production, and in particular to an online reforming hydrogen production device and method for improving the combustion performance of a methanol fuel engine. Background Art

[0002] With the increasing global demand for clean energy and the gradual depletion of traditional fossil fuel resources, finding alternative energy sources has become an urgent need. Methanol, as a clean and efficient liquid fuel, has shown great application potential in the fields of transportation and industrial power due to its wide source, good combustion characteristics and low emissions. However, when methanol is directly used as an engine fuel, there are problems such as ignition difficulties and incomplete combustion, which affect its promotion and application. In recent years, studies have found that by reforming methanol online into a hydrogen-rich mixed gas (mainly composed of H2, CO and a small amount of CO2), the combustion performance of methanol fuel engines can be significantly improved, thermal efficiency can be improved and harmful emissions can be reduced.

[0003] The current hydrogen production device is unable to realize the function of dynamically delivering hydrogen to the methanol fuel engine, and thus cannot meet the demand for hydrogen of the methanol fuel engine under different working conditions, resulting in poor combustion performance of the methanol fuel engine, and therefore urgently needs to be improved. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects of the above-mentioned prior art that the reforming hydrogen production device cannot dynamically transport hydrogen to the methanol fuel engine and cannot adapt to various working conditions of the methanol fuel engine, resulting in poor combustion performance of the methanol fuel engine, and to provide an online reforming hydrogen production device and method for improving the combustion performance of the methanol fuel engine.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] This embodiment provides an online reforming hydrogen production device for improving the combustion performance of a methanol fuel engine, comprising a hydrogen production tank, a material discharge component, a reaction chamber, a separation chamber, an air supply pipeline and a control module, wherein the material discharge component is installed on the hydrogen production tank, and the reaction chamber and the separation chamber are located inside the hydrogen production tank;

[0007] The material discharge component is connected to the control module and is used to add reaction materials into the reaction chamber;

[0008] The two ends of the separation chamber are respectively connected to the reaction chamber and the air supply pipe, and the other end of the air supply pipe is connected to the air intake of the engine. The separation chamber is used to filter the hydrogen generated by the reaction chamber. An adjustment structure of a connection control module is provided between the separation chamber and the air supply pipe, which is used to adjust the hydrogen content delivered by the air supply pipe to the air intake of the engine.

[0009] Preferably, an H-shaped partition plate group is arranged inside the hydrogen production tank, and the partition plate group includes a first partition plate, a second partition plate and a reaction carrier plate; the first partition plate and the second partition plate are symmetrically fixed at both ends of the reaction carrier plate, and the first partition plate is located at one end of the hydrogen production tank close to the gas supply pipeline, and the partition plate arranged on the reaction carrier plate divides the area enclosed by the first partition plate and the second partition plate into a reaction chamber and a separation chamber.

[0010] Preferably, the second partition plate and the end of the hydrogen production tank away from the gas delivery pipeline enclose a transition chamber; the end of the second partition plate close to the reaction chamber is provided with a first air hole, the first air hole is located at the end of the reaction chamber away from the reaction carrier plate, and the first air hole connects the reaction chamber and the transition chamber;

[0011] A one-way valve is provided at one end of the second partition plate close to the separation chamber, and the one-way valve is connected to the control module. The inlet end of the one-way valve is connected to the transition chamber, and the outlet end is connected to the separation chamber. A second air hole is provided at one end of the first partition plate close to the separation chamber, and the second air hole connects the separation chamber and the air supply pipe.

[0012] Preferably, the adjustment structure comprises a fixing plate, a fixing block, an adjustment motor, a driving gear, a tooth plate and a closing plate;

[0013] The fixing plate is fixed to one end of the hydrogen production tank close to the first partition plate, and is vertically fixed to the side of the first partition plate away from the second partition plate, the fixing block is mounted on the fixing plate, the driving gear is rotatably mounted on the fixing block, the regulating motor is driven to connect the driving gear, and is communicatively connected to the control module;

[0014] The fixed plate is provided with a through slot matching with the tooth plate, the tooth plate passes through the through slot, one end of the tooth plate is meshed with the driving gear, and the other end is connected to the closing plate, the number of the second air holes is multiple, and the closing plate abuts against one side of the second air holes to adjust the number of the second air holes opened.

[0015] Preferably, a rectangular groove is provided on the outer side of the hydrogen production tank, and the material discharge component is arranged in the rectangular groove;

[0016] The material unloading component includes a first material storage tank, a first material control valve, a second material storage tank, a second material control valve, a third material storage tank and a third material control valve;

[0017] The outlet end of the first storage tank is provided with a first feeding pipe, the outlet end of the first feeding pipe is connected to the reaction chamber, the first material control valve is arranged at the outlet end of the first feeding pipe and is connected to the control module, and the first storage tank is used to store methanol;

[0018] The outlet end of the second material storage tank is provided with a second feeding pipe, the outlet end of the second feeding pipe is connected to the reaction chamber, the second material control valve is arranged at the outlet end of the second feeding pipe and is connected to the control module, and the second material storage tank is used to store water;

[0019] The outlet end of the third storage tank is provided with a third feeding pipe, the outlet end of the third feeding pipe is connected to the reaction chamber, the third control valve is arranged at the outlet end of the third feeding pipe and is connected to the control module, and the third storage tank is used to store the catalyst.

[0020] Preferably, a temperature controller and a pressure controller are provided inside the reaction chamber; the temperature controller is used to control the temperature inside the reaction chamber, and the pressure controller is used to control the pressure inside the reaction chamber; the temperature controller and the pressure controller are located at one end of the reaction chamber away from the reaction carrier plate, and are respectively connected to the control modules.

[0021] Preferably, a separation module is provided in the separation chamber, the separation module divides the separation chamber into two areas, and the separation module is used to separate and purify hydrogen in the mixed gas transported by the reaction chamber.

[0022] This embodiment also provides a method for improving the combustion performance of a methanol fuel engine by an online reforming hydrogen production device, comprising the following steps:

[0023] Mixing methanol fuel and water in a certain proportion into a reaction chamber to obtain a methanol-water mixture;

[0024] Adding a catalyst to a methanol-water mixture and adjusting the temperature and pressure in a reaction chamber to cause the methanol-water mixture to undergo a reforming reaction to obtain a hydrogen-rich mixed gas;

[0025] Separate and purify the hydrogen-rich mixed gas to obtain high-purity hydrogen;

[0026] High-purity hydrogen is delivered to the intake duct of the methanol fuel engine and mixed with the methanol fuel for combustion.

[0027] Preferably, the mass ratio of the methanol fuel to water is in the range of 1-1.5:1, and the types of the catalyst include Cu, ZnO and Al2O3.

[0028] Preferably, the reaction temperature range in the reaction chamber is 200-350° C., and the reaction pressure range is 2-5 bar.

[0029] Compared with the prior art, the present invention has the following advantages:

[0030] (1) The control module of this scheme controls the unloading component to add hydrogen production materials into the reaction chamber inside the hydrogen production tank. The hydrogen in the reaction chamber then enters the separation chamber, and the separation chamber transports the filtered hydrogen to the methanol fuel generator through the air supply pipeline. When the generator operating conditions change, the control module controls the regulating structure to change the hydrogen content transported by the air supply pipeline to the generator.

[0031] When the working condition of the generator changes, the control module controls the regulating structure to adjust the hydrogen delivery content of the separation cavity to the air delivery pipeline, i.e., the engine air inlet, so as to meet the hydrogen demand of the methanol fuel engine under different working conditions, realize the dynamic adjustment of the hydrogen delivery amount of the hydrogen production device, improve the combustion performance of the fuel in the methanol fuel engine, and thus improve the applicability of the methanol fuel engine. In addition, the hydrogen production device has a simple and reliable structure, and the hydrogen delivery content is easy to adjust.

[0032] (2) This scheme adopts an H-shaped partition plate group to divide the internal space of the hydrogen production tank into a reaction chamber, a transition chamber and a separation chamber which are connected in sequence. Methanol and water are reformed in the reaction chamber to produce hydrogen. The hydrogen-containing mixed gas is transported to the separation chamber in one direction through the transition chamber. After separation and purification in the separation chamber, high-purity hydrogen is obtained and transported to the engine in an appropriate amount. The combustion performance of the engine is improved by the combustion of methanol fuel. The hydrogen production device has a compact structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic diagram of the three-dimensional structure of the hydrogen production device provided by the present invention;

[0034] Figure 2 A front view of the hydrogen production device provided by the present invention;

[0035] Figure 3 A side view of the hydrogen production device provided by the present invention;

[0036] Figure 4 The present invention provides Figure 3 Sectional view of AA in the middle;

[0037] Figure 5 A top view of the hydrogen production device provided by the present invention;

[0038] Figure 6 A schematic diagram of the internal structure of the hydrogen production device provided by the present invention;

[0039] Figure 7 A schematic diagram of the structure of the regulating structure provided by the present invention;

[0040] Figure 8 A flow chart of the method for improving combustion performance of a methanol fuel engine by online reforming hydrogen production provided by the present invention;

[0041] In the figure: 1. hydrogen production tank; 2. rectangular groove; 3. control module; 4. air supply pipe; 5. first partition plate; 6. second partition plate; 7. reaction carrier plate; 8. reaction area; 9. separation area; 10. temperature controller; 11. pressure controller; 12. first air vent; 13. second air vent; 14. first storage tank; 15. first material control valve; 16. second storage tank; 17. second material control valve; 18. third storage tank; 19. third material control valve; 20. one-way valve; 21. separation module; 22. fixing plate; 23. through groove; 24. fixing block; 25. adjusting motor; 26. driving gear; 27. tooth plate; 28. intermediate rod; 29. ​​closing plate. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0043] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0045] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0046] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0047] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0048] Example 1

[0049] like Figures 1 to 7 As shown, this embodiment provides an online reforming hydrogen production device for improving the combustion performance of a methanol fuel engine, characterized in that it includes a hydrogen production tank 1, a feed component, a reaction chamber 8, a separation chamber 9, an air supply pipeline 4 and a control module 3, the feed component is installed on the hydrogen production tank 1, and the reaction chamber and the separation chamber are located inside the hydrogen production tank 1;

[0050] The material discharge component is connected to the control module 3 and is used to add reaction materials into the reaction chamber;

[0051] The two ends of the separation chamber 9 are respectively connected to the reaction chamber 8 and the air supply pipe 4. The other end of the air supply pipe 4 is connected to the air intake of the engine. The separation chamber 9 is used to filter the hydrogen generated by the reaction chamber 8. An adjustment structure of a connection control module is provided between the separation chamber 9 and the air supply pipe 4, which is used to adjust the hydrogen content delivered by the air supply pipe 4 to the air intake of the engine.

[0052] Working principle: The control module 3 controls the material feeding component to add hydrogen production materials into the reaction chamber 8 inside the hydrogen production tank 1, and then the hydrogen in the reaction chamber 8 enters the separation chamber 9, and the separation chamber 9 delivers the filtered hydrogen to the methanol fuel generator through the air delivery pipe 4. When the generator operating conditions change, the control module 3 controls the regulating structure to change the hydrogen content delivered by the air delivery pipe 4 to the generator.

[0053] When the working condition of the generator changes, the control module 3 controls the regulating structure to adjust the hydrogen delivery content of the separation chamber 9 to the air delivery pipe 4, i.e., the engine air inlet, so as to meet the demand for hydrogen of the methanol fuel engine under different working conditions, realize the dynamic adjustment of the hydrogen delivery amount of the hydrogen production device, improve the combustion performance of the fuel in the methanol fuel engine, and thus improve the applicability of the methanol fuel engine. In addition, the hydrogen production device has a simple and reliable structure, and the hydrogen delivery content is easy to adjust.

[0054] In a preferred embodiment, an H-shaped partition plate group is arranged inside the hydrogen production tank 1, and the partition plate group includes a first partition plate 5, a second partition plate 6 and a reaction carrier plate 7; the first partition plate 5 and the second partition plate 6 are symmetrically fixed at both ends of the reaction carrier plate 7, and the first partition plate 5 is located at one end of the hydrogen production tank 1 close to the air supply pipe 4, and is arranged on the reaction carrier plate 7 to divide the area enclosed by the first partition plate 5 and the second partition plate 6 into a reaction chamber 8 and a separation chamber 9.

[0055] Specifically, the second partition plate 6 and the end of the hydrogen production tank 1 away from the gas delivery pipe 4 enclose a transition chamber; the end of the second partition plate 6 close to the reaction chamber 8 is provided with a first air hole 12, and the first air hole 12 is located at the end of the reaction chamber 8 away from the reaction carrier plate 7, and the first air hole 12 connects the reaction chamber 8 and the transition chamber;

[0056] A one-way valve 20 is provided at one end of the second partition plate 6 close to the separation chamber 9, and the one-way valve 20 is connected to the control module 3. The inlet end of the one-way valve 20 is connected to the transition chamber, and the outlet end is connected to the separation chamber 9. A second air hole 13 is provided at one end of the first partition plate 5 close to the separation chamber 9, and the second air hole 13 connects the separation chamber 9 and the air supply pipe 4.

[0057] An H-shaped partition plate group is used to divide the internal space of the hydrogen production tank into a reaction chamber, a transition chamber and a separation chamber which are connected in sequence. Methanol and water are reformed in the reaction chamber to produce hydrogen. The hydrogen-containing mixed gas is unidirectionally transported to the separation chamber through the transition chamber. After separation and purification in the separation chamber, high-purity hydrogen is obtained and transported to the engine in an appropriate amount. The combustion performance of the engine is improved by the combustion of methanol fuel. The hydrogen production device has a compact structure.

[0058] In a preferred embodiment, the adjustment structure includes a fixing plate 22, a fixing block 24, an adjustment motor 25, a driving gear 26, a tooth plate 27 and a closing plate 29;

[0059] The fixing plate 22 is fixed to one end of the hydrogen production tank 1 close to the first partition plate 5, and is vertically fixed to the side of the first partition plate 5 away from the second partition plate 6. The fixing block 24 is installed on the fixing plate 22. The driving gear 26 is rotatably installed on the fixing block 24. The regulating motor 25 drives and connects the driving gear 26, and is communicatively connected to the control module.

[0060] The fixing plate 22 is provided with a through slot 23 which cooperates with the tooth plate 27. The tooth plate 27 passes through the through slot 23. One end of the tooth plate 27 is meshed with the driving gear 26, and the other end is connected to the closing plate 29. There are multiple second air holes 13, and the closing plate 29 abuts against one side of the second air holes 13 to adjust the number of the second air holes 13 that are opened.

[0061] Specifically, a rectangular groove 2 is provided on the outer side of the hydrogen production tank 1, and the material discharge component is arranged in the rectangular groove 2;

[0062] The material unloading component includes a first material storage tank 14, a first material control valve 15, a second material storage tank 16, a second material control valve 17, a third material storage tank 18 and a third material control valve 19;

[0063] A first feeding pipe is provided at the outlet end of the first storage tank 14, and the outlet end of the first feeding pipe is connected to the reaction chamber 8. A first control valve 15 is provided at the outlet end of the first feeding pipe and is connected to the control module. The first storage tank 14 is used to store methanol.

[0064] The outlet end of the second storage tank 16 is provided with a second feeding pipe, the outlet end of the second feeding pipe is connected to the reaction chamber 8, the second control valve 17 is arranged at the outlet end of the second feeding pipe and is connected to the control module, and the second storage tank 16 is used to store water;

[0065] A third feeding pipe is provided at the outlet end of the third storage tank 18, and the outlet end of the third feeding pipe is connected to the reaction chamber 8. A third control valve 19 is provided at the outlet end of the third feeding pipe and is connected to the control module. The third storage tank 18 is used to store catalyst.

[0066] Among them, a temperature controller 10 and a pressure controller 11 are provided inside the reaction chamber 8; the temperature controller 10 is used to control the temperature inside the reaction chamber 8, and the pressure controller 11 is used to control the pressure inside the reaction chamber 8; the temperature controller 10 and the pressure controller 11 are located at one end of the reaction chamber 8 away from the reaction carrier plate 7, and are respectively connected to the control module 3.

[0067] Furthermore, a separation module 21 is provided in the separation chamber 9 , and the separation module 21 divides the separation chamber 9 into two areas. The separation module 21 is used to separate and purify hydrogen in the mixed gas transported by the reaction chamber 8 .

[0068] Working principle: During operation, the control module 3 controls the first material control valve 15, the second material control valve 17 and the third material control valve 19 to be opened respectively, so as to feed the corresponding methanol, water and catalyst into the reaction area 8 in the storage tank, and then the control module 3 controls the temperature controller 10 and the pressure controller 11 to start, so as to adjust the reaction temperature and reaction pressure in the reaction area 8 to appropriate values. After a period of reaction, the hydrogen-rich mixed gas produced after the reaction passes through the first air hole 12 and the one-way valve 20 in turn into the separation area 9. After the mixed gas passes through the separation module 21 in the separation area 9, the separation module 21 separates the impurity gas in the mixed gas, so that the high-purity hydrogen is discharged from the reaction area 8 through the second air hole 13. The high-purity hydrogen discharged from the reaction area 8 enters the intake duct of the methanol fuel engine through the air supply pipe 4, thereby improving the combustion performance.

[0069] It should be noted that the hydrogen delivery rate can be adjusted by the adjustment mechanism, specifically as follows: the control module 3 controls the start of the adjustment motor 25, so that the driving gear 26 fixedly connected to the output end of the adjustment motor 25 rotates, and the driving gear 26 is engaged with the tooth plate 27, so that the tooth plate 27 slides in the through groove 23 toward the second air hole 13, and then the intermediate rod 28 fixedly connected to the tooth plate 27 slides in the direction of the second air hole 13, thereby driving the closing plate 29 fixedly connected to the intermediate rod 28 to slide in the direction of the second air hole 13, thereby blocking the second air hole 13 on the first partition plate 5, thereby realizing the adjustment of the hydrogen delivery rate, which is suitable for the demand for hydrogen of the methanol fuel engine under different working conditions, thereby realizing dynamic adjustment of the combustion performance of the methanol fuel engine.

[0070] like Figure 8 As shown, this embodiment also provides a method for improving the combustion performance of a methanol fuel engine by an online reforming hydrogen production device, comprising the following steps:

[0071] S1: Mixing methanol fuel and water in a certain proportion into the reaction chamber 8 to obtain a methanol-water mixture;

[0072] S2: adding a catalyst to the methanol-water mixture, and adjusting the temperature and pressure in the reaction chamber 8 to cause the methanol-water mixture to undergo a reforming reaction to obtain a hydrogen-rich mixed gas;

[0073] S3: separating and purifying the hydrogen-rich mixed gas to obtain high-purity hydrogen;

[0074] S4: High-purity hydrogen is delivered to the intake duct of the methanol fuel engine and mixed with the methanol fuel for combustion.

[0075] A methanol-water mixture with a mass ratio of 1:1 is selected as the reforming raw material and filled in the reforming reactor. The catalyst is set to operate at a temperature of 200°C and a pressure of 2 bar to cause a reforming reaction of the methanol-water mixture to generate a hydrogen-rich mixed gas, which is then separated and purified by a hydrogen production device to remove impurities (such as CO, CO2, etc.) to obtain high-purity hydrogen. The separated and purified high-purity hydrogen is directly injected into the intake duct of the methanol fuel engine and mixed with the methanol fuel for combustion to improve combustion performance.

[0076] Example 2

[0077] This embodiment is basically the same as embodiment 1, except that a methanol-water mixture with a mass ratio of 1:1 is selected as the reforming raw material, and the reforming reactor is filled with The catalyst is set to operate at a temperature of 350°C and a pressure of 5 bar to cause a reforming reaction of the methanol-water mixture to generate a hydrogen-rich mixed gas, which is then separated and purified by a hydrogen production device to remove impurities (such as CO, CO2, etc.) to obtain high-purity hydrogen. The separated and purified high-purity hydrogen is directly injected into the intake duct of the methanol fuel engine and mixed with the methanol fuel for combustion to improve combustion performance.

[0078] Example 3

[0079] This embodiment is basically the same as embodiment 1, except that a methanol-water mixture with a mass ratio of 1.5:1 is selected as the reforming raw material, and the reforming reactor is filled with The catalyst is set to operate at a temperature of 200°C and a pressure of 2 bar to cause a reforming reaction of the methanol-water mixture to generate a hydrogen-rich mixed gas, which is then separated and purified by a hydrogen production device to remove impurities (such as CO, CO2, etc.) to obtain high-purity hydrogen. The separated and purified high-purity hydrogen is directly injected into the intake duct of the methanol fuel engine and mixed with the methanol fuel for combustion to improve combustion performance.

[0080] Example 4

[0081] This embodiment is basically the same as embodiment 1, except that a methanol-water mixture with a mass ratio of 1.5:1 is selected as the reforming raw material, and the reforming reactor is filled with The catalyst is set to operate at a temperature of 350°C and a pressure of 5 bar to cause a reforming reaction of the methanol-water mixture to generate a hydrogen-rich mixed gas, which is then separated and purified by a hydrogen production device to remove impurities (such as CO, CO2, etc.) to obtain high-purity hydrogen. The separated and purified high-purity hydrogen is directly injected into the intake duct of the methanol fuel engine and mixed with the methanol fuel for combustion to improve combustion performance.

[0082] The table of improving combustion performance of Examples 1 to 4 is as follows:

[0083]

[0084] As can be seen from the table above, with the increase of operating temperature and pressure, the purity of hydrogen is improved, the combustion efficiency is significantly improved, and harmful emissions (such as CO and ) also decreased significantly.

[0085] Specifically: Temperature effect: Higher operating temperature (such as 350°C) helps to improve hydrogen purity and combustion efficiency, while more effectively reducing harmful emissions; Pressure effect: Higher working pressure (such as 5 bar) also helps to improve hydrogen purity and combustion efficiency, and further reduce harmful emissions; Methanol-water mixture ratio: Properly increasing the methanol ratio (such as 1.5:1) can slightly improve combustion efficiency and reduce harmful emissions, but the effect is not as obvious as temperature and pressure. In summary, Example 4 (operating temperature of 350°C, pressure of 5 bar, methanol-water mixture mass ratio of 1.5:1) performs best in improving combustion performance, not only improving combustion efficiency, but also significantly reducing harmful emissions.

[0086] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. An online reforming hydrogen production device for improving the combustion performance of a methanol fuel engine, characterized in that: It comprises a hydrogen production tank (1), a material discharge component, a reaction chamber (8), a separation chamber (9), an air supply pipeline (4) and a control module (3), wherein the material discharge component is mounted on the hydrogen production tank (1), and the reaction chamber and the separation chamber are located inside the hydrogen production tank (1); The material discharge component is connected to the control module (3) and is used to add reaction materials into the reaction chamber; The two ends of the separation chamber (9) are respectively connected to the reaction chamber (8) and the air supply pipeline (4); the other end of the air supply pipeline (4) is connected to the air intake of the engine; the separation chamber (9) is used to filter the hydrogen generated by the reaction chamber (8); an adjustment structure connected to a control module is provided between the separation chamber (9) and the air supply pipeline (4) for adjusting the hydrogen content delivered by the air supply pipeline (4) to the air intake of the engine; An H-shaped partition plate group is arranged inside the hydrogen production tank (1), and the partition plate group comprises a first partition plate (5), a second partition plate (6) and a reaction carrier plate (7); the first partition plate (5) and the second partition plate (6) are symmetrically fixed at two ends of the reaction carrier plate (7), the first partition plate (5) is located at one end of the hydrogen production tank (1) close to the gas supply pipeline (4), and the reaction carrier plate (7) divides the area enclosed by the first partition plate (5) and the second partition plate (6) into a reaction chamber (8) and a separation chamber (9); The second partition plate (6) and the end of the hydrogen production tank (1) away from the gas supply pipe (4) enclose a transition chamber; the end of the second partition plate (6) close to the reaction chamber (8) is provided with a first air hole (12), the first air hole (12) is located at the end of the reaction chamber (8) away from the reaction carrier plate (7), and the first air hole (12) connects the reaction chamber (8) and the transition chamber; A one-way valve (20) is provided at one end of the second partition plate (6) close to the separation chamber (9), and the one-way valve (20) is connected to the control module (3). The inlet end of the one-way valve (20) is connected to the transition chamber, and the outlet end is connected to the separation chamber (9). A second air vent (13) is provided at one end of the first partition plate (5) close to the separation chamber (9), and the second air vent (13) is connected to the separation chamber (9) and the air supply pipe (4).

2. The online reforming hydrogen production device for improving the combustion performance of a methanol fuel engine according to claim 1, characterized in that: The adjustment structure comprises a fixing plate (22), a fixing block (24), an adjustment motor (25), a driving gear (26), a tooth plate (27) and a closing plate (29); The fixing plate (22) is fixed to one end of the hydrogen production tank (1) close to the first partition plate (5), and is vertically fixed to a side of the first partition plate (5) away from the second partition plate (6); the fixing block (24) is mounted on the fixing plate (22); the driving gear (26) is rotatably mounted on the fixing block (24); the regulating motor (25) is driven and connected to the driving gear (26), and is communicatively connected to the control module; The fixing plate (22) is provided with a through slot (23) which matches with the tooth plate (27); the tooth plate (27) passes through the through slot (23); one end of the tooth plate (27) is meshed with the driving gear (26); the other end is connected to the closing plate (29); the number of the second air holes (13) is plural; the closing plate (29) abuts against one side of the second air holes (13) and is suitable for adjusting the number of the second air holes (13) to be opened.

3. The online reforming hydrogen production device for improving the combustion performance of a methanol fuel engine according to claim 1, characterized in that: A rectangular groove (2) is provided on the outer side of the hydrogen production tank (1), and the material discharge component is arranged in the rectangular groove (2); The material unloading component comprises a first material storage tank (14), a first material control valve (15), a second material storage tank (16), a second material control valve (17), a third material storage tank (18) and a third material control valve (19); The outlet end of the first storage tank (14) is provided with a first feeding pipe, the outlet end of the first feeding pipe is connected to the reaction chamber (8), the first material control valve (15) is arranged at the outlet end of the first feeding pipe and is connected to the control module, and the first storage tank (14) is used to store methanol; The outlet end of the second material storage tank (16) is provided with a second feeding pipe, the outlet end of the second feeding pipe is connected to the reaction chamber (8), the second material control valve (17) is arranged at the outlet end of the second feeding pipe and is connected to the control module, and the second material storage tank (16) is used to store water; A third feeding pipe is provided at the outlet end of the third storage tank (18), and the outlet end of the third feeding pipe is connected to the reaction chamber (8). The third material control valve (19) is arranged at the outlet end of the third feeding pipe and is connected to the control module. The third storage tank (18) is used to store the catalyst.

4. The online reforming hydrogen production device for improving the combustion performance of a methanol fuel engine according to claim 1, characterized in that: A temperature controller (10) and a pressure controller (11) are provided inside the reaction chamber (8); the temperature controller (10) is used to control the temperature inside the reaction chamber (8), and the pressure controller (11) is used to control the pressure inside the reaction chamber (8); the temperature controller (10) and the pressure controller (11) are located at one end of the reaction chamber (8) away from the reaction carrier plate (7), and are respectively connected to the control module (3).

5. The on-line reforming hydrogen production device for improving the combustion performance of a methanol fuel engine according to claim 1, characterized in that: A separation module (21) is provided in the separation chamber (9), the separation module (21) divides the separation chamber (9) into two areas, and the separation module (21) is used to separate and purify hydrogen in the mixed gas transported by the reaction chamber (8).

6. A method for improving the combustion performance of a methanol fuel engine by an online reforming hydrogen production device according to any one of claims 1 to 5, characterized in that: The following steps are involved: Mixing methanol fuel and water in a certain ratio into a reaction chamber (8) to obtain a methanol-water mixture; Adding a catalyst to a methanol-water mixture and adjusting the temperature and pressure in a reaction chamber (8) to cause the methanol-water mixture to undergo a reforming reaction to obtain a hydrogen-rich mixed gas; Separate and purify the hydrogen-rich mixed gas to obtain high-purity hydrogen; High-purity hydrogen is delivered to the intake duct of the methanol fuel engine and mixed with the methanol fuel for combustion.

7. The method according to claim 6, characterized in that The mass ratio of the methanol fuel to water is in the range of 1-1.5:1, and the types of the catalyst include Cu, ZnO and Al2O3.

8. The method according to claim 6, characterized in that The reaction temperature range in the reaction chamber (8) is 200-350°C, and the reaction pressure range is 2-5 bar.

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