Integrated methanol reforming hydrogen production device coupled with electrode auxiliary heating and hydrogen back-burning

Abstract

The application relates to the technical field of hydrogen production by methanol reforming, in particular to an integrated methanol reforming hydrogen production device with electrode auxiliary heating and hydrogen back-burning coupling, which comprises a left baffle and a right baffle, an inner pipe is fixed between the left baffle and the right baffle, a left electrode plate, a middle electrode plate, a right electrode plate and a partition plate are fixed in the inner cavity of the inner pipe, the left electrode plate, the middle electrode plate, the right electrode plate and the partition plate divide the inner cavity of the inner pipe into a left smoke guide chamber, a vaporization chamber, a right smoke guide chamber, a combustion chamber and a material guide chamber, a left gas guide pipe, a left reaction pipe, a middle reaction pipe and a right reaction pipe are communicated between a gas outlet pipe and the material guide chamber, a smoke guide pipe is communicated between the left smoke guide chamber and the right smoke guide chamber, a right electrode plate hole A is communicated between the right smoke guide chamber and the combustion chamber, and a right gas guide pipe is communicated between the combustion chamber and an air inlet pipe. The device solves the problems of slow starting speed, unstable hydrogen production rate, low overall energy efficiency, large water consumption and poor miniaturization of the existing methanol reforming hydrogen production device, and is suitable for methanol reforming hydrogen production.

Description

Technical Field

[0001] This invention relates to the field of methanol reforming for hydrogen production technology, specifically an integrated methanol reforming for hydrogen production device coupled with electrode-assisted heating and hydrogen re-ignition. Background Technology

[0002] With the rapid development of distributed hydrogen supply, miniaturized hydrogen production devices, and fuel cell-supported hydrogen supply systems, the market has placed higher demands on methanol reforming hydrogen production technology, which can achieve rapid start-up, continuous and stable hydrogen supply, and high hydrogen quality. Methanol, as a widely available, easily stored and transported liquid hydrogen storage substance with a high hydrogen content, has promising engineering application prospects. Therefore, research on efficient and integrated equipment for methanol reforming hydrogen production is of great significance. However, in practical applications, existing methanol reforming hydrogen production devices suffer from the following problems due to their structural limitations: First, existing methanol reforming hydrogen production devices mostly rely on a single heat source, so the methanol-water solution cannot quickly vaporize and enter the reforming reaction process during the start-up phase, resulting in a slow start-up speed. Second, existing methanol reforming hydrogen production devices cannot dynamically adjust the reforming reaction process, so the generated reformed gas cannot maintain a hydrogen-rich state when operating conditions fluctuate or load changes, resulting in unstable hydrogen yield. Third, existing methanol reforming hydrogen production devices do not adequately recover and utilize waste heat and moisture contained in flue gas, resulting in low overall energy efficiency and high water consumption. Fourth, existing methanol reforming hydrogen production units typically employ a discrete design, resulting in a large size that hinders miniaturization. Therefore, it is necessary to invent an integrated methanol reforming hydrogen production unit that couples electrode-assisted heating with hydrogen regeneration to address the problems of slow start-up speed, unstable hydrogen yield, low overall energy efficiency, high water consumption, and limitations in miniaturization inherent in existing methanol reforming hydrogen production units. Summary of the Invention

[0003] To address the problems of slow start-up speed, unstable hydrogen yield, low overall energy efficiency, large water consumption, and unfavorable miniaturization of existing methanol reforming hydrogen production units, this invention provides an integrated methanol reforming hydrogen production unit that couples electrode-assisted heating with hydrogen regeneration.

[0004] This invention is achieved using the following technical solution: An integrated methanol reforming hydrogen production unit coupled with electrode-assisted heating and hydrogen recirculation includes a left baffle and a right baffle; an outlet pipe is fixed to the left surface of the left baffle; an inlet pipe is fixed to the right surface of the right baffle; an inner tube is fixed between the left and right baffles; the inner cavity of the inner tube is sequentially fixed with a left electrode plate, a middle electrode plate, a right electrode plate, and a partition from left to right; the left electrode plate, the middle electrode plate, the right electrode plate, and the partition divide the inner cavity of the inner tube into a left smoke guiding chamber, a vaporization chamber, a right smoke guiding chamber, a combustion chamber, and a feed guiding chamber arranged sequentially from left to right; an igniter is fixed to the left surface of the partition; From left to right, the exhaust pipe and the feed chamber are connected by a left exhaust pipe passing through the left smoke chamber, a left reaction pipe passing through the vaporization chamber, a middle reaction pipe passing through the right smoke chamber, and a right reaction pipe passing through the combustion chamber. A left electrode rod fixed between the left electrode plate and the middle electrode plate is inserted into the left reaction pipe. A right electrode rod fixed between the middle electrode plate and the right electrode plate is inserted into the middle reaction pipe. A smoke pipe passing through the vaporization chamber connects the left smoke chamber and the right smoke chamber. A right electrode plate hole A is opened on the right electrode plate to connect the right smoke chamber and the combustion chamber. A right exhaust pipe passing through the feed chamber connects the combustion chamber and the intake pipe. A flange A is fixedly mounted on the right end of the outer side of the inner tube; an outer tube sleeved on the outside of the inner tube is fixed between the left baffle and flange A; a preheating chamber is formed between the outer tube and the inner tube; a left guide hole opened on the side wall of the inner tube is connected between the preheating chamber and the vaporization chamber; a right guide hole opened on the side wall of the inner tube is connected between the preheating chamber and the guide chamber; and an exhaust pipe that penetrates the outer tube and is connected to the left smoke chamber, and a feed pipe that penetrates the outer tube and is connected to the vaporization chamber are respectively connected to the side wall of the inner tube.

[0005] Furthermore, a right baffle hole is provided through the right baffle; a left electrode hole A is provided through the left electrode plate; a middle electrode hole A is provided through the middle electrode plate; a partition hole A is provided through the partition plate; the two ends of the smoke guide tube are respectively connected to the left electrode plate hole A and the middle electrode plate hole A; the two ends of the right air guide tube are respectively connected to the partition hole A and the right baffle hole.

[0006] Furthermore, a left baffle hole is formed through the left baffle; a left electrode hole B is formed through the left electrode plate; a middle electrode hole B is formed through the middle electrode plate; a right electrode hole B is formed through the right electrode plate; a partition hole B is formed through the partition plate; both ends of the left gas guide tube are connected to the left baffle hole and the left electrode hole B, respectively; both ends of the left reaction tube are connected to the left electrode hole B and the middle electrode hole B, respectively; both ends of the middle reaction tube are connected to the middle electrode hole B and the right electrode hole B, respectively; both ends of the right reaction tube are connected to the right electrode hole B and the partition hole B, respectively; both ends of the left electrode rod are supported and fixed to the hole wall of the left electrode hole B and the hole wall of the middle electrode hole B, respectively; both ends of the right electrode rod are supported and fixed to the hole wall of the middle electrode hole B and the hole wall of the right electrode hole B, respectively.

[0007] Furthermore, the exhaust pipe is a stepped pipe with a narrower left side and a wider right side; the intake pipe is a stepped pipe with a wider left side and a narrower right side.

[0008] Furthermore, a perforated plate is fixed inside the intake pipe.

[0009] Furthermore, a left terminal block that passes through both the inner and outer tubes is fixed to the side of the left electrode plate.

[0010] Furthermore, a central terminal block is fixed to the side of the intermediate electrode plate, which passes through both the inner and outer tubes.

[0011] Furthermore, a right terminal block is fixed to the side of the right electrode plate, which passes through both the inner tube and the outer tube.

[0012] Furthermore, a flange B, which mates with flange A, is fixedly fitted to the right end of the outer side of the outer tube.

[0013] Compared with existing methanol reforming hydrogen production units, the integrated methanol reforming hydrogen production unit coupled with electrode-assisted heating and hydrogen re-ignition described in this invention has the following advantages: First, by setting electrode-assisted heating, this invention enables the methanol-water solution to rapidly vaporize and enter the reforming reaction process during the start-up phase, thereby effectively improving the start-up speed. Second, by controlling the start and stop of electrode-assisted heating, this invention achieves dynamic regulation of the reforming reaction process, thus ensuring that the generated reformed gas remains hydrogen-rich under fluctuating operating conditions or load changes, thereby effectively guaranteeing the stability of hydrogen production. Third, this invention achieves full recovery and utilization of waste heat and moisture contained in flue gas, thereby effectively improving overall energy efficiency and effectively reducing water consumption. Fourth, the structure of this invention adopts an integrated design, thereby effectively reducing volume and facilitating miniaturization.

[0014] This invention effectively solves the problems of slow start-up speed, unstable hydrogen yield, low overall energy efficiency, large water consumption, and unfavorable miniaturization of existing methanol reforming hydrogen production units, and is suitable for methanol reforming hydrogen production. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention.

[0016] Figure 2 yes Figure 1 A sectional view.

[0017] Figure 3 yes Figure 1 Partial structural diagram Figure 1 .

[0018] Figure 4 yes Figure 3 A sectional view.

[0019] Figure 5 yes Figure 1 Partial structural diagram Figure 2 .

[0020] Figure 6 yes Figure 5 A sectional view.

[0021] Figure 7 yes Figure 1 Partial structural diagram Figure 3 .

[0022] Figure 8 yes Figure 7 A sectional view.

[0023] Figure 9 yes Figure 7 Partial structural diagram Figure 1 .

[0024] Figure 10 yes Figure 9 A sectional view.

[0025] Figure 11 yes Figure 7 Partial structural diagram Figure 2 .

[0026] Figure 12 yes Figure 11 Cross-section Figure 1 .

[0027] Figure 13 yes Figure 11 Cross-section Figure 2 .

[0028] Figure 14 yes Figure 11 A partial structural diagram.

[0029] Figure 15 yes Figure 14 Another structural diagram from another angle.

[0030] Figure 16 yes Figure 1 Another structural diagram from another angle.

[0031] Figure 17 yes Figure 16 Partial structural diagram Figure 1 .

[0032] Figure 18 yes Figure 16 Partial structural diagram Figure 2 .

[0033] Figure 19 This is a schematic diagram of the working state of the present invention.

[0034] In the diagram: 1-Left baffle, 1.1-Left baffle hole, 2-Right baffle, 2.1-Right baffle hole, 3-Outlet pipe, 4-Inlet pipe, 5-Inner pipe, 5.1-Left guide hole, 5.2-Right guide hole, 6-Left electrode plate, 6.1-Left electrode plate hole A, 6.2-Left electrode plate hole B, 7-Intermediate electrode plate, 7.1-Intermediate electrode plate hole A, 7.2-Intermediate electrode plate hole B, 8-Right electrode plate, 8.1-Right electrode plate hole A, 8.2-Right electrode plate hole B, 9-Baffle, 9.1-Baffle hole A, 9.2-Baffle hole B, 10-Igniter, 11-Left air guide pipe, 12-Left reaction pipe, 13-Intermediate reaction pipe, 14-Right reaction pipe, 15-Left electrode rod, 16-Right electrode rod, 17-Smoke guide pipe, 18-Right air guide pipe, 19-Flange A. 20-Outer pipe, 21-Exhaust pipe, 22-Infeed pipe, 23-Perforated plate, 24-Left terminal, 25-Middle terminal, 26-Right terminal, 27-Flange B; 101-Water tank, 102-First regulating valve, 103-First transfer pump, 104-Methanol storage tank, 105-Second regulating valve, 106-Second transfer pump, 107-First tee pipe, 108-Solution premixing tank, 109-Condenser, 110-Third regulating valve, 201-Gas storage tank, 202-Hydrogen separator, 203-Hydrogen flow meter, 204-Fourth regulating valve, 205-Air fan, 206-Second tee pipe, 301-Hydrogen concentration sensor, 302-Power supply, 303-First pulse switch, 304-Second pulse switch, 305-Controller. Detailed Implementation

[0035] An integrated methanol reforming hydrogen production unit coupled with electrode-assisted heating and hydrogen recirculation includes a left baffle 1 and a right baffle 2; an outlet pipe 3 is fixed to the left surface of the left baffle 1; an inlet pipe 4 is fixed to the right surface of the right baffle 2; an inner tube 5 is fixed between the left baffle 1 and the right baffle 2; a left electrode plate 6, a middle electrode plate 7, a right electrode plate 8, and a partition plate 9 are fixed sequentially from left to right in the inner cavity of the inner tube 5; the left electrode plate 6, the middle electrode plate 7, the right electrode plate 8, and the partition plate 9 divide the inner cavity of the inner tube 5 into a left smoke guiding chamber, a vaporization chamber, a right smoke guiding chamber, a combustion chamber, and a feed guiding chamber arranged sequentially from left to right; an igniter 10 is fixed to the left surface of the partition plate 9; From left to right, the exhaust pipe 3 is connected to the material guide chamber by a left exhaust pipe 11 passing through the left smoke guide chamber, a left reaction pipe 12 passing through the vaporization chamber, an intermediate reaction pipe 13 passing through the right smoke guide chamber, and a right reaction pipe 14 passing through the combustion chamber. A left electrode rod 15, fixed between the left electrode plate 6 and the intermediate electrode plate 7, is installed inside the left reaction pipe 12. A right electrode rod 16, fixed between the intermediate electrode plate 7 and the right electrode plate 8, is installed inside the intermediate reaction pipe 13. A smoke guide pipe 17, passing through the vaporization chamber, connects the left smoke guide chamber and the right smoke guide chamber. A right electrode plate hole A8.1, opened on the right electrode plate 8, connects the right smoke guide chamber and the combustion chamber. A right exhaust pipe 18, passing through the material guide chamber, connects the combustion chamber and the intake pipe 4. A flange A19 is fixedly mounted on the right end of the outer side of the inner tube 5; an outer tube 20 is fixed between the left baffle 1 and the flange A19 and sleeved on the outside of the inner tube 5; a preheating chamber is formed between the outer tube 20 and the inner tube 5; a left guide hole 5.1 opened on the side wall of the inner tube 5 is connected between the preheating chamber and the vaporization chamber; a right guide hole 5.2 opened on the side wall of the inner tube 5 is connected between the preheating chamber and the guide chamber; an exhaust pipe 21 that penetrates the outer tube 20 and is connected to the left smoke guide chamber and a feed pipe 22 that penetrates the outer tube 20 and is connected to the vaporization chamber are respectively connected to the side wall of the inner tube 5.

[0036] During operation, this device is equipped with a material feeding and recovery system, a combustion recovery system, and a control system.

[0037] The feeding and recovery system includes a water tank 101, a first regulating valve 102, a first delivery pump 103, a methanol storage tank 104, a second regulating valve 105, a second delivery pump 106, a first three-way pipe 107, a solution premixing tank 108, a condenser 109, and a third regulating valve 110. The water tank 101 is connected to the first port of the first three-way pipe 107 via the first regulating valve 102 and the first delivery pump 103. The methanol storage tank 104 is connected to the second port of the first three-way pipe 107 via the second regulating valve 105 and the second delivery pump 106. The third port of the first three-way pipe 107 is connected to the feed pipe 22 via the solution premixing tank 108. The exhaust pipe 21 is connected to the water tank 101 via the condenser 109 and the third regulating valve 110.

[0038] The combustion recovery system includes a gas storage tank 201, a hydrogen separator 202, a hydrogen flow meter 203, a fourth regulating valve 204, an air fan 205, and a second three-way pipe 206; the outlet pipe 3 is connected to the gas storage tank 201; the gas storage tank 201 is connected to the first port of the second three-way pipe 206 in sequence through the hydrogen separator 202, the hydrogen flow meter 203, and the fourth regulating valve 204; the air fan 205 is connected to the second port of the second three-way pipe 206; and the third port of the second three-way pipe 206 is connected to the inlet pipe 4.

[0039] The control system includes a hydrogen concentration sensor 301, a power supply 302, a first pulse switch 303, a second pulse switch 304, and a controller 305. The hydrogen concentration sensor 301 is connected to the gas storage tank 201. The positive terminal of the power supply 302 is connected to the left electrode plate 6. The negative terminal of the power supply 302 is connected to the middle electrode plate 7 through the first pulse switch 303 and to the right electrode plate 8 through the second pulse switch 304. The controller 305 is connected to the hydrogen concentration sensor 301, the first pulse switch 303, and the second pulse switch 304.

[0040] The left reaction tube 12, the middle reaction tube 13, and the right reaction tube 14 are all filled with catalyst.

[0041] The specific work process is as follows: First, the controller 305 controls the first pulse switch 303 and the second pulse switch 304 to close, thereby starting electrode-assisted heating, that is, the left electrode plate 6, the middle electrode plate 7, the right electrode plate 8, the left electrode rod 15, and the right electrode rod 16 are energized and heated, thereby heating the left reaction tube 12 and the middle reaction tube 13.

[0042] Then, the first delivery pump 103 and the second delivery pump 106 are started. Water in water tank 101 is injected sequentially into solution premixing tank 108 through the first regulating valve 102, the first delivery pump 103, and the first three-way pipe 107. Methanol in methanol storage tank 104 is injected sequentially into solution premixing tank 108 through the second regulating valve 105, the second delivery pump 106, and the first three-way pipe 107. Methanol and water mix in solution premixing tank 108 to form methanol-water solution. Methanol-water solution is injected into vaporization chamber through feed pipe 22 and exchanges heat with left reaction tube 12, thereby rapidly vaporizing into methanol vapor. Methanol vapor flows sequentially through left feed port 5.1, preheating chamber, right feed port 5.2, feed chamber, right reaction tube 14, intermediate reaction tube 13, and left reaction tube 12. During this process, methanol vapor flowing through intermediate reaction tube 13 contacts the catalyst on one hand and exchanges heat with right electrode rod 16 and intermediate reaction tube 13 on the other hand, thereby generating reformed gas through reforming reaction. The generated reformed gas is sequentially injected into the storage tank 201 via the left reaction tube 12, the left gas guide tube 11, and the outlet tube 3. The methanol vapor flowing through the left reaction tube 12 contacts the catalyst and exchanges heat with the left electrode rod 15 and the left reaction tube 12, thereby generating reformed gas through the reforming reaction. The generated reformed gas is sequentially injected into the storage tank 201 via the left gas guide tube 11 and the outlet tube 3. A portion of the reformed gas in the storage tank 201 is output externally, while the other portion is separated into hydrogen by the hydrogen separator 202. The separated hydrogen is sequentially injected into the inlet pipe 4 via the hydrogen flow meter 203, the fourth regulating valve 204, and the second three-way pipe 206.

[0043] Then, the igniter 10 and air blower 205 are activated. The air blower 205 injects air into the intake pipe 4 through the second three-way pipe 206. Hydrogen and air mix in the intake pipe 4 to form a premixed gas. The premixed gas is injected into the combustion chamber through the right guide pipe 18 and then ignited by the igniter 10, thus initiating combustion. The flue gas produced by combustion heats the inner pipe 5 and the right reaction pipe 14. During this process, methanol vapor flowing through the preheating chamber exchanges heat with the inner pipe 5, thereby achieving preheating. Methanol vapor flowing through the right reaction pipe 14 contacts the catalyst on one hand and exchanges heat with the right reaction pipe 14 on the other hand, thereby generating reformed gas through the reforming reaction. The generated reformed gas is injected into the gas storage tank 201 sequentially through the intermediate reaction pipe 13, the left reaction pipe 12, the left guide pipe 11, and the outlet pipe 3.

[0044] Then, the controller 305 controls the first pulse switch 303 and the second pulse switch 304 to disconnect, thereby stopping the electrode-assisted heating. That is, the left electrode plate 6, the middle electrode plate 7, the right electrode plate 8, the left electrode rod 15, and the right electrode rod 16 lose power and cool down, and the left reaction tube 12 and the middle reaction tube 13 cool down accordingly. At this time, the reforming reaction in the middle reaction tube 13 and the left reaction tube 12 stops, while the reforming reaction in the right reaction tube 14 continues.

[0045] During this process, the flue gas is sequentially injected into the condenser 109 through the right electrode plate hole A8.1, the right smoke guide chamber, the smoke guide pipe 17, the left smoke guide chamber, and the exhaust pipe 21. The moisture contained in the flue gas condenses into water in the condenser 109. The condensed water is injected into the water tank 101 through the third regulating valve 110, thereby achieving recycling. The methanol-water solution in the vaporization chamber exchanges heat with the smoke guide pipe 17, thereby utilizing the waste heat of the flue gas to accelerate the vaporization rate. The hydrogen concentration sensor 301 detects the hydrogen content of the reformed gas in the gas storage tank 201 in real time and sends the detection result to the controller 305. When the operating conditions fluctuate or the load changes, causing the hydrogen content of the reformed gas to fall below the set value, the controller 305 controls the first pulse switch 303 and the second pulse switch 304 to close again, thereby restarting the electrode auxiliary heating, which restarts the reforming reaction in the intermediate reaction tube 13 and the left reaction tube 12, thereby increasing the hydrogen content of the reformed gas and keeping the generated reformed gas in a hydrogen-rich state.

[0046] The right baffle 2 has a through hole 2.1; the left electrode plate 6 has a through hole A6.1; the middle electrode plate 7 has a through hole A7.1; the partition plate 9 has a through hole A9.1; the two ends of the smoke guide pipe 17 are connected to the left electrode plate hole A6.1 and the middle electrode plate hole A7.1 respectively; the two ends of the right air guide pipe 18 are connected to the partition hole A9.1 and the right baffle hole 2.1 respectively.

[0047] A left baffle hole 1.1 is formed through the left baffle 1; a left electrode plate hole B6.2 is formed through the left electrode plate 6; a middle electrode plate hole B7.2 is formed through the middle electrode plate 7; a right electrode plate hole B8.2 is formed through the right electrode plate 8; a partition hole B9.2 is formed through the partition plate 9; the two ends of the left gas guide tube 11 are connected to the left baffle hole 1.1 and the left electrode plate hole B6.2, respectively; the two ends of the left reaction tube 12 are connected to the left electrode plate hole B6.2 and the middle electrode plate hole, respectively. B7.2 is connected; the two ends of the intermediate reaction tube 13 are connected to the intermediate electrode plate hole B7.2 and the right electrode plate hole B8.2 respectively; the two ends of the right reaction tube 14 are connected to the right electrode plate hole B8.2 and the partition hole B9.2 respectively; the two ends of the left electrode rod 15 are supported and fixed to the hole wall of the left electrode plate hole B6.2 and the hole wall of the intermediate electrode plate hole B7.2 respectively; the two ends of the right electrode rod 16 are supported and fixed to the hole wall of the intermediate electrode plate hole B7.2 and the hole wall of the right electrode plate hole B8.2 respectively.

[0048] The exhaust pipe 3 is a stepped pipe that is narrower on the left and wider on the right; the intake pipe 4 is a stepped pipe that is wider on the left and narrower on the right.

[0049] A perforated plate 23 is fixed inside the intake pipe 4. During operation, the premixed air is first rectified by the perforated plate 23, and then injected into the combustion chamber through the right air guide pipe 18.

[0050] A left terminal 24, which passes through both the inner tube 5 and the outer tube 20, is fixed to the side of the left electrode plate 6. During operation, the positive terminal of the power supply 302 is connected to the left electrode plate 6 through the left terminal 24.

[0051] A middle terminal 25, which passes through both the inner tube 5 and the outer tube 20, is fixed to the side of the intermediate electrode plate 7. During operation, the negative terminal of the power supply 302 is connected to the intermediate electrode plate 7 in sequence through the first pulse switch 303 and the middle terminal 25.

[0052] A right terminal 26, which passes through both the inner tube 5 and the outer tube 20, is fixed to the side of the right electrode plate 8. During operation, the negative terminal of the power supply 302 is connected to the right electrode plate 8 in sequence through the second pulse switch 304 and the right terminal 26.

[0053] The outer right end of the outer tube 20 is fixedly fitted with flange B27, which mates with flange A19.

[0054] In specific implementation, the following holes are provided in multiples and arranged in an array: left baffle hole 1.1, right baffle hole 2.1, left guide hole 5.1, right guide hole 5.2, left electrode plate hole A6.1, left electrode plate hole B6.2, middle electrode plate hole A7.1, middle electrode plate hole B7.2, right electrode plate hole A8.1, right electrode plate hole B8.2, partition hole A9.1, partition hole B9.2, left gas guide tube 11, left reaction tube 12, middle reaction tube 13, right reaction tube 14, left electrode rod 15, right electrode rod 16, smoke guide tube 17, and right gas guide tube 18. The left electrode plate 6, middle electrode plate 7, right electrode plate 8, left terminal 24, middle terminal 25, and right terminal 26 are all covered with an insulating layer. The igniter 10 is a remote-controlled igniter.

[0055] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. An integrated methanol reforming hydrogen production unit coupled with electrode-assisted heating and hydrogen re-ignition, characterized in that: Includes a left baffle (1) and a right baffle (2); an exhaust pipe (3) is fixed on the left surface of the left baffle (1); an intake pipe (4) is fixed on the right surface of the right baffle (2); an inner tube (5) is fixed between the left baffle (1) and the right baffle (2); the inner cavity of the inner tube (5) is fixed with a left electrode plate (6), a middle electrode plate (7), a right electrode plate (8), and a partition (9) from left to right; the left electrode plate (6), the middle electrode plate (7), the right electrode plate (8), and the partition (9) divide the inner cavity of the inner tube (5) into a left smoke chamber, a vaporization chamber, a right smoke chamber, a combustion chamber, and a material guiding chamber arranged from left to right; an igniter (10) is fixed on the left surface of the partition (9); The gas outlet pipe (3) and the material guide chamber are connected from left to right by a left gas guide pipe (11) passing through the left smoke guide chamber, a left reaction pipe (12) passing through the vaporization chamber, an intermediate reaction pipe (13) passing through the right smoke guide chamber, and a right reaction pipe (14) passing through the combustion chamber; a left electrode rod (15) fixed between the left electrode plate (6) and the intermediate electrode plate (7) is installed inside the left reaction pipe (12); a right electrode rod (16) fixed between the intermediate electrode plate (7) and the right electrode plate (8) is installed inside the intermediate reaction pipe (13); a smoke guide pipe (17) passing through the vaporization chamber is connected between the left smoke guide chamber and the right smoke guide chamber; a right electrode plate hole A (8.1) opened on the right electrode plate (8) is connected between the right smoke guide chamber and the combustion chamber; a right gas guide pipe (18) passing through the material guide chamber is connected between the combustion chamber and the gas inlet pipe (4). A flange A (19) is fixedly mounted on the right side of the outer side of the inner tube (5); an outer tube (20) is fixed between the left baffle (1) and the flange A (19) and sleeved on the outside of the inner tube (5); a preheating chamber is formed between the outer tube (20) and the inner tube (5); a left guide hole (5.1) opened on the side wall of the inner tube (5) is connected between the preheating chamber and the vaporization chamber; a right guide hole (5.2) opened on the side wall of the inner tube (5) is connected between the preheating chamber and the guide chamber; a smoke exhaust pipe (21) that penetrates the outer tube (20) and is connected to the left smoke guide chamber, and a feed pipe (22) that penetrates the outer tube (20) and is connected to the vaporization chamber are respectively connected to the side wall of the inner tube (5). The right baffle (2) has a through hole (2.1); the left electrode plate (6) has a through hole (6.1); the middle electrode plate (7) has a through hole (7.1); the partition plate (9) has a through hole (9.1); the two ends of the smoke guide pipe (17) are connected to the left electrode plate hole (6.1) and the middle electrode plate hole (7.1) respectively; the two ends of the right air guide pipe (18) are connected to the partition hole (9.1) and the right baffle hole (2.1) respectively. A left baffle hole (1.1) is provided through the left baffle (1); a left electrode plate hole B (6.2) is provided through the left electrode plate (6); a middle electrode plate hole B (7.2) is provided through the middle electrode plate (7); a right electrode plate hole B (8.2) is provided through the right electrode plate (8); a partition hole B (9.2) is provided through the partition plate (9); the two ends of the left gas guide tube (11) are connected to the left baffle hole (1.1) and the left electrode plate hole B (6.2) respectively; the two ends of the left reaction tube (12) are connected to the left electrode plate hole B (6.2) and the middle electrode plate hole respectively. The plate hole B (7.2) is connected; the two ends of the intermediate reaction tube (13) are connected to the intermediate electrode plate hole B (7.2) and the right electrode plate hole B (8.2) respectively; the two ends of the right reaction tube (14) are connected to the right electrode plate hole B (8.2) and the partition plate hole B (9.2) respectively; the two ends of the left electrode rod (15) are supported and fixed to the hole wall of the left electrode plate hole B (6.2) and the hole wall of the intermediate electrode plate hole B (7.2) respectively; the two ends of the right electrode rod (16) are supported and fixed to the hole wall of the intermediate electrode plate hole B (7.2) and the hole wall of the right electrode plate hole B (8.2) respectively. During operation, this device is equipped with a recirculation system; The combustion recovery system includes a gas storage tank (201), a hydrogen separator (202), a hydrogen flow meter (203), a fourth regulating valve (204), an air fan (205), and a second three-way pipe (206); the outlet pipe (3) is connected to the gas storage tank (201); the gas storage tank (201) is connected to the first port of the second three-way pipe (206) in sequence through the hydrogen separator (202), the hydrogen flow meter (203), the fourth regulating valve (204); the air fan (205) is connected to the second port of the second three-way pipe (206); the third port of the second three-way pipe (206) is connected to the inlet pipe (4); The left reaction tube (12), the middle reaction tube (13), and the right reaction tube (14) are all filled with catalyst; A methanol-water solution is injected into the vaporization chamber through the feed pipe (22) and exchanges heat with the left reaction tube (12), thereby rapidly vaporizing into methanol vapor. The methanol vapor flows sequentially through the left feed port (5.1), the preheating chamber, the right feed port (5.2), the feed chamber, the right reaction tube (14), the intermediate reaction tube (13), and the left reaction tube (12). During this process, the methanol vapor flowing through the intermediate reaction tube (13) contacts the catalyst on one hand and exchanges heat with the right electrode rod (16) and the intermediate reaction tube (13) on the other hand, thereby generating reformed gas through the reforming reaction. The generated reformed gas flows sequentially through the left reaction tube (12), the left gas guide pipe (11), and the outlet. Gas pipe (3) is injected into gas storage tank (201); methanol vapor flowing through left reaction tube (12) contacts the catalyst on one hand and exchanges heat with left electrode rod (15) and left reaction tube (12) on the other hand, thereby generating reformed gas through reforming reaction; the generated reformed gas is injected into gas storage tank (201) in sequence through left gas guide pipe (11) and gas outlet pipe (3); part of the reformed gas in gas storage tank (201) is output to the outside, and the other part is separated into hydrogen by hydrogen separator (202); the separated hydrogen is injected into inlet pipe (4) in sequence through hydrogen flow meter (203), fourth regulating valve (204) and second three-way pipe (206); The igniter (10) and air blower (205) are started. The air blower (205) injects air into the intake pipe (4) through the second three-way pipe (206). Hydrogen and air are mixed in the intake pipe (4) to form a premixed gas. The premixed gas is injected into the combustion chamber through the right guide pipe (18) and then ignited by the igniter (10) to carry out combustion. The flue gas generated by combustion heats the inner pipe (5) and the right reaction pipe (14). During this process, the methanol vapor flowing through the preheating chamber exchanges heat with the inner pipe (5) to achieve preheating. The methanol vapor flowing through the right reaction pipe (14) contacts the catalyst on one hand and exchanges heat with the right reaction pipe (14) on the other hand, thereby generating reformed gas through the reforming reaction. The generated reformed gas is injected into the gas storage tank (201) in sequence through the middle reaction pipe (13), the left reaction pipe (12), the left guide pipe (11), and the gas outlet pipe (3).

2. The integrated methanol reforming hydrogen production device coupled with electrode-assisted heating and hydrogen regeneration according to claim 1, characterized in that: The exhaust pipe (3) is a stepped pipe with a narrower left side and a wider right side; the intake pipe (4) is a stepped pipe with a wider left side and a narrower right side.

3. The integrated methanol reforming hydrogen production device coupled with electrode-assisted heating and hydrogen regeneration according to claim 1, characterized in that: A perforated plate (23) is fixed inside the air intake pipe (4).

4. The integrated methanol reforming hydrogen production unit coupled with electrode-assisted heating and hydrogen regeneration according to claim 1, characterized in that: The left electrode plate (6) has a left terminal (24) that passes through both the inner tube (5) and the outer tube (20) on its side.

5. The integrated methanol reforming hydrogen production unit coupled with electrode-assisted heating and hydrogen re-ignition as described in claim 1, characterized in that: The side of the intermediate electrode plate (7) is fixed with an intermediate terminal (25) that passes through both the inner tube (5) and the outer tube (20).

6. The integrated methanol reforming hydrogen production unit coupled with electrode-assisted heating and hydrogen regeneration according to claim 1, characterized in that: The right electrode plate (8) has a right terminal (26) that passes through both the inner tube (5) and the outer tube (20) on its side.

7. The integrated methanol reforming hydrogen production unit coupled with electrode-assisted heating and hydrogen regeneration according to claim 1, characterized in that: The outer side of the outer tube (20) is fixedly fitted with flange B (27) which is mated with flange A (19).

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