Lead-based reactor hydrogen production system

Abstract

The present invention relates to the technical field of hydrogen production equipment, and specifically provides a lead-based reactor hydrogen production system, which aims to solve the problem of low hydrogen production efficiency due to poor heat exchange efficiency of existing hydrogen production equipment. To this end, the lead-based reactor hydrogen production system of the present invention includes a lead-based reactor, a first-loop heat exchange component with a heat exchange medium flowing therethrough, a steam generating component and a second-loop circulation component; part of the first-loop heat exchange component is accommodated in the lead-based reactor; a steam generating medium flows through the steam generating component, and the steam generating medium in the steam generating component is in direct contact with the heat exchange medium for heat exchange and generates steam, which is transported to the hydrogen generating component, and the flow direction of the heat exchange medium is different from that of the steam generating medium; the second-loop circulation component is used to transport the heat exchanged heat exchange medium to the first-loop heat exchange component. The lead-based reactor hydrogen production system of the present invention adopts a steam generator with direct contact heat exchange, which effectively improves the hydrogen production efficiency while improving the heat exchange efficiency, thereby reducing the cost of hydrogen production.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen production equipment, and specifically provides a lead-based reactor hydrogen production system. Background Art

[0002] In the hydrogen production industry, solid oxide electrolysis (SOE) is a promising process due to its high conversion rate. This process requires high-temperature, high-pressure steam as a feedstock and a significant energy supply. Nuclear energy can be used in this industry.

[0003] Nuclear energy is mostly used for hydrogen production through traditional electrolysis. In this traditional electrolysis process, the steam temperature of conventional pressurized reactors is only around 300°C, which is insufficient for hydrogen production. Only fourth-generation lead-based reactors, such as lead-bismuth reactors, gas-cooled reactors, and sodium reactors, can reach core temperatures around 800°C, making them suitable for solid oxide electrolysis hydrogen production.

[0004] However, current lead-based reactors for hydrogen production primarily include the lead-bismuth boiling water fast reactor (BWR) and the lead-bismuth pool reactor (BWR). In the BWR, water and lead-bismuth exchange heat in a primary circuit to produce steam. However, due to the reflective nature of the steam within the reactor, it cannot be used directly for steam production. The BWR utilizes an intermediate shell-and-tube heat exchanger, which has low heat transfer efficiency and requires a larger heat exchange area to ensure efficient hydrogen production, increasing production costs. Summary of the Invention

[0005] The present invention aims to solve the above technical problem, that is, to solve the problem that the existing hydrogen production equipment has low hydrogen production efficiency due to poor heat exchange efficiency.

[0006] To this end, the present invention provides a lead-based reactor hydrogen production system, which includes: a lead-based reactor, a primary heat exchange component, a steam generation component, and a secondary circulation component;

[0007] Part of the primary heat exchange component is accommodated in the lead-based reactor, and a heat exchange medium flows through the primary heat exchange component;

[0008] A steam generating medium flows through the steam generating assembly, and an input end of the steam generating assembly is connected to an output end of the primary heat exchange assembly, so that the steam generating medium generates steam in the steam generating assembly after direct contact heat exchange with the heat exchange medium, and the steam is transported to the hydrogen generating assembly through a transport pipeline, wherein the heat exchange medium and the steam generating medium have different flow directions;

[0009] The two ends of the secondary circulation component are respectively connected to the input end of the primary heat exchange component and the output end of the steam generation component to transport the heat exchange medium after heat exchange into the primary heat exchange component.

[0010] In the preferred technical solution of the above-mentioned lead-based reactor hydrogen production system, the steam generation assembly includes a steam generator, a first distributor and a second distributor;

[0011] From top to bottom, the steam generator is structured into a gas-liquid heat exchange area and a liquid-liquid heat exchange area, and a ceramic filler is provided in the gas-liquid heat exchange area;

[0012] The first distributor is arranged above the gas-liquid heat exchange area and is connected to the output end of the primary heat exchange component so that the heat exchange medium flows through the ceramic filler and then enters the liquid-liquid heat exchange area;

[0013] The second distributor is arranged in the liquid-liquid heat exchange zone, and the second distributor is connected to the output end of the steam generating medium conveying pipeline to convey the steam generating medium to the liquid-liquid heat exchange zone and make the steam generating medium directly contact with the heat exchange medium.

[0014] In the preferred technical solution of the above-mentioned lead-based reactor hydrogen production system, a plurality of first flow holes are provided on the first distributor, and the flow directions of the plurality of first flow holes are arranged downward in the vertical direction.

[0015] In the preferred technical solution of the lead-based reactor hydrogen production system, the second distributor is provided with a plurality of second flow holes, and the flow direction of the second flow holes is arranged vertically upward; and / or,

[0016] The flow direction of the second flow hole is arranged in an oblique upward direction.

[0017] In the preferred technical solution of the above-mentioned lead-based reactor hydrogen production system, a filtering area is further provided in the steam generator;

[0018] The filter area is located at a predetermined distance above the gas-liquid heat exchange area, wherein a metal filter is provided in the filter area.

[0019] In the preferred technical solution of the above-mentioned lead-based reactor hydrogen production system, a buffer zone is further provided in the steam generator, and the buffer zone is provided above the filter zone.

[0020] In the preferred technical solution of the above-mentioned lead-based reactor hydrogen production system, the primary circuit heat exchange component includes a heat exchanger and a heat exchange pipe;

[0021] The heat exchanger is located in the lead-based reactor;

[0022] The input end of the heat exchange pipe is in communication with the output end of the heat exchanger, and the output end of the heat exchange pipe is in communication with the input end of the steam generating assembly;

[0023] Wherein, the heat exchange medium flows through the heat exchanger and the heat exchange pipe.

[0024] In the preferred technical solution of the above-mentioned lead-based reactor hydrogen production system, the secondary loop circulation component includes a circulation pipe and a circulation pump;

[0025] The output end of the circulation pipeline is communicated with the input end of the heat exchanger, and the input end of the circulation pipeline is connected to the output end of the steam generating assembly;

[0026] The circulation pump is arranged on the circulation pipeline, and is used to transport the heat exchange medium after heat exchange to the heat exchanger.

[0027] In the preferred technical solution of the above-mentioned lead-based reactor hydrogen production system, a medium filter is provided in the delivery pipeline.

[0028] In the preferred technical solution of the above-mentioned lead-based reactor hydrogen production system, the heat exchange medium includes liquid high-temperature lead-bismuth alloy.

[0029] When the above technical solution is adopted, in the lead-based reactor hydrogen production system of the present invention, the core of the lead-based reactor generates heat during operation, and this part of the heat is taken out by the cooling medium (such as liquid lead-bismuth alloy) in the lead-based reactor; then, the heat carried by the cooling medium is heat-exchanged with the heat exchange medium in the primary heat exchange component to extract the heat from the lead-based reactor; then, the heat exchange medium carrying the heat of the lead-based reactor is in direct contact with the steam generating medium circulating in the steam generating component to perform a heat exchange process, so as to effectively improve the heat exchange efficiency while causing the steam generating medium to generate high-temperature and high-pressure steam, and the high-temperature and high-pressure steam is transported to the hydrogen generating component through a transmission pipeline, thereby effectively improving the hydrogen production efficiency; finally, the heat exchange medium after direct contact heat exchange is re-transported to the primary heat exchange component through the secondary circulation component for the next heat extraction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0031] Figure 1 is a schematic structural diagram of a lead-based reactor hydrogen production system according to an exemplary embodiment;

[0032] Figure 2 It is a schematic structural diagram of a steam generation component in a lead-based reactor hydrogen production system according to an exemplary embodiment.

[0033] Description of reference numerals:

[0034] 1. Lead-based reactor; 2. Primary heat exchange component; 3. Steam generation component; 4. Secondary circulation component; 5. Delivery pipeline; 6. Hydrogen generation component; 7. Delivery pipeline; 8. Medium filter; 21. Heat exchanger; 22. Heat exchange pipeline; 31. Steam generator; 32. First distributor; 33. Second distributor; 34. Gas-liquid heat exchanger; 35. Liquid-liquid heat exchange area; 36. Filtration area; 37. Metal filter; 38. Buffer zone; 41. Circulation pipeline; 42. Circulation pump; 100. Lead-based reactor hydrogen production system; 311. Cylinder; 312. First inlet; 313. Second inlet; 314. First outlet; 315. Second outlet; 341. Ceramic filler. DETAILED DESCRIPTION

[0035] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0036] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0037] like Figure 1 As shown, an exemplary embodiment of the present invention provides a lead-based reactor hydrogen production system 100. The lead-based reactor hydrogen production system 100 includes a lead-based reactor 1, a primary heat exchange component 2, a steam generation component 3, and a secondary circulation component 4.

[0038] The lead-based reactor 1 may include, but is not limited to, a lead-bismuth reactor. During operation, the core temperature of the lead-bismuth reactor can reach approximately 800°C, thereby meeting the steam requirements for subsequent hydrogen production. Heat generated in the core of the lead-bismuth reactor can be dissipated by a cooling medium within the reactor, such as a liquid lead-bismuth alloy.

[0039] The primary heat exchange assembly 2 is partially housed within the lead-based reactor 1. A heat exchange medium circulates within the primary heat exchange assembly 2 to remove heat from the cooling medium through heat exchange between the heat exchange medium and the cooling medium. It should be noted that the temperature of the heat exchange medium is lower than that of the cooling medium.

[0040] In one example, the heat exchange medium may include, but is not limited to, liquid lead-bismuth alloy. That is, the type of heat exchange medium can be the same as the type of cooling medium. For example, both the cooling medium and the heat exchange medium can be liquid lead-bismuth alloy, thereby reducing the equipment design requirements for the lead-based reactor hydrogen production system. The temperature of the liquid lead-bismuth alloy used as the heat exchange medium is lower than that of the liquid lead-bismuth alloy used as the cooling medium.

[0041] It should be noted that the heat exchange medium or cooling medium may also be other cooling materials, for example, liquid lead or liquid sodium, etc. In one example, the cooling material used by the heat exchange medium may be different from the cooling material used by the cooling medium.

[0042] A steam generating medium flows through the steam generating assembly 3. The steam generating medium may include but is not limited to water or distilled water.

[0043] The input end of the steam generation assembly 3 is connected to the output end of the primary heat exchange assembly 2, so that the heat exchange medium after the primary heat exchange enters the steam generation assembly 3. It should be noted that the heat exchange medium after the primary heat exchange refers to the heat exchange medium after the primary heat exchange with the cooling medium in the primary heat exchange assembly. In other words, the heat exchange medium after the primary heat exchange carries the heat generated by the lead-based reactor core.

[0044] After the heat exchange medium enters the steam generating assembly 3 after the primary heat exchange, the heat exchange medium after the primary heat exchange is in direct contact with the steam generating medium circulating in the steam generating assembly 3 to generate high-temperature steam in a high-temperature state. As the high-temperature steam continues to gather in the steam generating assembly 3, the high-temperature steam gradually forms high-temperature and high-pressure steam. The high-temperature and high-pressure steam is transported to the hydrogen generating assembly 6 through the delivery pipe 5. In one example, the hydrogen generating assembly 6 may include but is not limited to an electrolytic cell. The electrolytic cell adopts a solid oxide electrolytic cell.

[0045] Within the steam generating assembly 3, the heat exchange medium and the steam generating medium flow in different directions. For example, the heat exchange medium flows vertically downward, while the steam generating medium flows vertically upward or diagonally upward. Alternatively, the heat exchange medium flows diagonally downward, while the steam generating medium flows diagonally upward, in the opposite direction of the heat exchange medium's flow. Of course, in other examples, the heat exchange medium's flow direction can also be other flow directions, as long as the heat exchange medium's flow direction is different from the steam generating medium's flow direction.

[0046] One end of the secondary circulation assembly 4 is connected to the input end of the primary heat exchange assembly 2, and the other end of the secondary circulation assembly 4 is connected to the output end of the steam generation assembly 3. The heat exchange medium, after heat exchange with the steam generation medium through the secondary circulation assembly 4, is transported to the primary heat exchange assembly 2. The secondary circulation assembly 4 is separated from the lead-based reactor 1, allowing for flexible design of the layout, structure, and method of the secondary circulation assembly 4.

[0047] In this embodiment, the core of the lead-based reactor 1 generates heat during operation, and this part of the heat is carried out by the cooling medium (such as liquid lead-bismuth alloy) in the lead-based reactor; then, the heat carried by the cooling medium is heat-exchanged with the heat exchange medium in the primary heat exchange component 2 to extract the heat from the lead-based reactor 1; then, the heat exchange medium carrying the heat of the lead-based reactor 1 is in direct contact with the steam generating medium circulating in the steam generating component 3 to exchange heat, so as to effectively improve the heat exchange efficiency while causing the steam generating medium to generate high-temperature and high-pressure steam. The high-temperature and high-pressure steam is transported to the hydrogen generating component 6 through the conveying pipe 5, thereby effectively improving the hydrogen production efficiency; finally, the heat exchange medium after direct contact heat exchange is re-transported to the primary heat exchange component 2 through the secondary circulation component 4 for the next heat exchange and heat extraction process.

[0048] like Figure 2 As shown, in some embodiments, the steam generating assembly 3 includes a steam generator 31 , a first distributor 32 , and a second distributor 33 .

[0049] In one example, the steam generator 31 includes a hollow cylinder 311 , on which a first inlet 312 , a second inlet 313 , a first outlet 314 and a second outlet 315 are provided.

[0050] From bottom to top, the first inlet 312 is located in the upper middle section of the sidewall of the cylinder 311. The second inlet 313 is located in the lower middle section of the sidewall of the cylinder 311. In other words, the second inlet 313 is located below the first inlet 312. It should be noted that the first inlet 312 and the second inlet 313 can be located on the same sidewall of the cylinder 311, or on different sidewalls of the cylinder 311.

[0051] The first outlet 314 is provided at any position on the bottom of the cylinder 311 or directly below the cylinder 311. The second outlet 315 is provided at any position on the top of the cylinder 311 or directly above the cylinder 311.

[0052] Reference Figure 2 As shown, from top to bottom, the steam generator 31 is structured into a gas-liquid heat exchange zone 34 and a liquid-liquid heat exchange zone 35. Ceramic filler 341 is disposed within the gas-liquid heat exchange zone 34. A first inlet 312 is disposed above the gas-liquid heat exchange zone 34, and a second inlet 313 is connected to the liquid-liquid heat exchange zone 35.

[0053] The first distributor 32 is disposed above the gas-liquid heat exchange area 34. The first distributor 32 can be mounted directly on the gas-liquid heat exchange area 34, or it can be spaced a predetermined distance apart from the gas-liquid heat exchange area 34. The input end of the first-circuit heat exchange assembly 2 extends into the barrel 311 through the first inlet 312. The output end of the primary-circuit heat exchange assembly 2 extends a predetermined distance into the barrel 311 and is connected to the first distributor 32.

[0054] The heat exchange medium carrying the core heat of the lead-based reactor 1 flows evenly into the cylinder 311 through the first distributor 32. From top to bottom, the heat exchange medium flows through the ceramic filler 341 and enters the liquid-liquid heat exchange zone 35.

[0055] The second distributor 33 is disposed within the liquid-liquid heat exchange zone 35. The output end of the delivery pipeline 7 for delivering the steam generating medium extends into the liquid-liquid heat exchange zone 35 through the second inlet 313. The output end of the delivery pipeline 7 is in communication with the second distributor 33, so that the steam generating medium is evenly delivered to the liquid-liquid heat exchange zone 35 through the second distributor 33.

[0056] In the liquid-liquid heat exchange zone 35, the heat exchange medium, carrying the heat from the lead-based reactor 1 core, undergoes direct contact heat exchange with the steam-generating medium, rapidly converting the steam-generating medium into saturated steam. The saturated steam then moves upward. As it passes through the gas-liquid heat exchange zone 34, it comes into contact with the downward-moving heat exchange medium within the ceramic filler 341, forming superheated steam. The superheated steam then gathers at the top of the cylinder 311 and is delivered to the hydrogen generation assembly 6 via the delivery pipe 5 connected to the second outlet 315.

[0057] Then, the heat exchange medium after heat exchange with the steam generating medium is transported back to the primary heat exchange component 2 through the secondary circulation component 4 , wherein the input end of the secondary circulation component 4 is connected to the first outlet 314 .

[0058] In this embodiment, the heat exchange medium carrying the heat of the lead-based reactor 1 core directly contacts the steam-generating medium within the liquid-liquid heat exchange zone 35 within the cylinder 311, improving heat exchange efficiency. Under the same steam parameter requirements, the heat exchange area of ​​the primary heat exchange assembly 2 can be reduced, reducing the reaction size and, consequently, the system cost. The steam-generating medium then forms saturated steam. As the saturated steam rises, it comes into contact with the heat exchange medium within the ceramic filler 341, forming superheated steam. It should be noted that superheated steam is high-temperature, high-pressure steam. The temperature of the superheated steam can reach between 600°C and 1000°C, thus meeting the needs of subsequent hydrogen production. In other words, in this embodiment, the heat energy generated by the core of the lead-based reactor 1 is used to produce hydrogen, promoting the diversified, complementary integration of energy sources and improving energy utilization.

[0059] Furthermore, the structural design of the steam generating assembly 3 in this embodiment enables the production of high-temperature, high-pressure steam. This high-temperature, high-pressure steam can subsequently be utilized to effectively improve hydrogen production efficiency in a hydrogen production process employing a solid oxide high-temperature electrolysis process. Furthermore, the simple structural design of the steam generating assembly 3 in this example can effectively reduce equipment manufacturing costs.

[0060] like Figure 2 As shown, in some embodiments, the first distributor 32 is provided with a plurality of first circulation holes (not shown). The plurality of first circulation holes can be arranged in a circumferential array or a rectangular array to uniformly transport the heat exchange medium carrying the core heat of the lead-based reactor 1 to the liquid-liquid heat exchange area 35. The first circulation holes are arranged in a vertical downward direction to utilize the gravity of the heat exchange medium itself and reduce the energy consumption of the secondary circuit heat exchange assembly 4.

[0061] Continue to refer to Figure 2 As shown, a plurality of second flow holes (not shown) are provided on the second distributor 33. The plurality of second flow holes can be arranged in a circumferential array or a rectangular array so that the steam generating medium can be uniformly delivered to the liquid-liquid heat exchange zone 35. In one example, the flow direction of the second flow holes is arranged vertically upward, or the flow direction of the second flow holes is arranged obliquely upward.

[0062] It should be noted that the steam generating medium may move vertically upwards during the upward movement, or the second flow holes may be arranged in a spiral direction so that the steam generating medium may move upwards in a spiral manner.

[0063] In this embodiment, the heat exchange medium and the steam generating medium adopt a countercurrent flow pattern and perform direct contact heat exchange, which can effectively increase the temperature of the generated steam, thereby improving the efficiency of subsequent hydrogen production. Simultaneously, under the same steam parameters, the core temperature of the lead-based reactor 1 can be reduced, thereby improving the safety factor of the lead-based reactor 1.

[0064] like Figure 2 As shown, in some embodiments, a filtering area 36 is further provided in the steam generator 31 .

[0065] The filter area 36 is disposed inside the cylinder 311 and is located at a predetermined distance above the gas-liquid heat exchange area 34. Specifically, the first distributor 32 is located between the filter area 36 and the gas-liquid heat exchange area 34.

[0066] A metal filter screen 37 is provided in the filter area 36 .

[0067] In this embodiment, the metal filter 37 can be used to effectively filter the lead-bismuth vapor entrained in the high-temperature and high-pressure steam (i.e., superheated steam), thereby preventing the lead-bismuth vapor from entering the hydrogen generation component 6.

[0068] like Figure 2 As shown, in some embodiments, a buffer zone 38 is further provided in the steam generator 31 . The buffer zone 38 is provided above the filtering zone 36 .

[0069] In this embodiment, the filtered high-temperature and high-pressure steam is continuously collected in the buffer zone 38. Since the cross-sectional area of ​​the buffer zone 38 is much larger than the cross-sectional area of ​​the delivery pipeline 5, the high-temperature and high-pressure steam can be stably delivered to the hydrogen generation component 6 to ensure the continuous stability of subsequent hydrogen production operations and improve the hydrogen production efficiency.

[0070] like Figure 1 As shown, in some embodiments, a medium filter 8 is provided in the delivery pipe 5. The medium filter 8 can adopt an electrostatic lead and bismuth removal device in the prior art, which will not be described in detail here.

[0071] In this example, the unfiltered lead and bismuth vapor in the high-temperature and high-pressure steam can be removed by the medium filter 8, thereby effectively ensuring the cleanliness of the subsequent high-temperature and high-pressure steam and improving the subsequent hydrogen production efficiency.

[0072] like Figure 1 As shown, in some embodiments, the primary heat exchange assembly 2 includes a heat exchanger 21 and a heat exchange pipe 22 .

[0073] The heat exchanger 21 is located in the lead-based reactor 1 to complete the heat exchange process with the cooling medium in the lead-based reactor 1.

[0074] The input end of the heat exchange pipe 22 is connected to the output end of the heat exchanger 21, and the output end of the heat exchange pipe 22 is connected to the input end of the steam generating assembly 3. Specifically, the output end of the heat exchange pipe 22 extends into the interior of the cylinder 311 through the first inlet 312 for a predetermined distance and is connected to the first distributor 32.

[0075] A heat exchange medium flows through the heat exchanger 21 and the heat exchange pipe 22 .

[0076] Continue to refer to Figure 1 As shown, the secondary loop circulation component 4 includes a circulation pipe 41 and a circulation pump 42 .

[0077] The output end of the circulation pipe 41 is connected to the input end of the heat exchanger 21 . The input end of the circulation pipe 41 is connected to the output end of the steam generating assembly 3 , specifically, the input end of the circulation pipe 41 is communicated with the first outlet 314 on the barrel 311 .

[0078] In order to quickly deliver the heat exchange medium after heat exchange to the heat exchanger 21 , a circulation pump 42 is provided on the circulation pipe 41 .

[0079] In this embodiment, the heat exchanger 21 is connected to the first distributor 32 in the steam generator 31 through the heat exchange pipe 22. The heat exchange medium circulating in the heat exchange pipe 22 and the heat exchanger 21 flows evenly into the liquid-liquid heat exchange area 35 through the first distributor 32. The heat exchange medium performs direct contact heat exchange with the steam generating medium in the liquid-liquid heat exchange area 35; the heat exchange medium after heat exchange with the steam generating medium enters the circulation pipe 41 from the first outlet 314 at the bottom of the cylinder 311, and then, the heat exchange medium in the circulation pipe 41 is re-transported to the heat exchanger 21 through the circulation pump 42 for the next re-heat exchange and heat extraction process.

[0080] Reference Figure 1 and Figure 2 The hydrogen production process of this exemplary lead-based reactor hydrogen production system is as follows:

[0081] The heat generated during the operation of the core of the lead-based reactor 1 is cooled by the cooling medium in the reactor, and part or all of the heat is taken out by the cooling medium.

[0082] Then, the cooling medium performs a first heat exchange with the heat exchange medium in the heat exchanger 21, and the heat exchange medium conducts part or all of the above heat away.

[0083] Then, the heat exchange medium carrying the heat of the lead-based reactor is transported through the heat exchange pipe 22 and enters the gas-liquid heat exchange area 34 through the first distributor 32, and enters the liquid-liquid heat exchange area 35 after passing through the ceramic filler 341 in the gas-liquid heat exchange area 34.

[0084] The heat exchange medium entering the liquid-liquid heat exchange zone 35 directly exchanges heat with the steam-generating medium in the steam generator 31 in a countercurrent fashion, rapidly converting the steam-generating medium into saturated steam. The saturated steam then moves upward. As it passes through the gas-liquid heat exchange zone 34, it comes into contact with the downward-moving heat exchange medium within the ceramic packing 341, forming superheated steam. After exchanging heat with the steam-generating medium, the heat exchange medium re-enters the heat exchanger 21 through the circulation pipe 41 and circulation pump 42 for the next round of heat exchange and heat removal.

[0085] The superheated steam continues to move upward, and then passes through the metal filter 37 to filter the lead-bismuth vapor contained in the superheated steam to completely or partially remove the lead-bismuth vapor; the superheated steam filtered by the metal filter 37 enters the buffer zone 38; as the superheated steam continues to gather, the superheated steam forms high-temperature and high-pressure steam.

[0086] Finally, the high-temperature, high-pressure steam is transported through delivery pipeline 5 and filtered again by media filter 8 to remove any remaining lead and bismuth vapor. The completely lead- and bismuth-free high-temperature, high-pressure steam then enters hydrogen generation assembly 6, where hydrogen production is performed using a solid oxide high-temperature electrolysis process.

[0087] Through the structural design of the above-mentioned lead-based reactor hydrogen production system and the use of countercurrent direct contact heat exchange, the heat exchange efficiency between the heat exchange medium and the steam generation medium is effectively improved. At the same time, by utilizing the structural design within the steam generator 31, high-temperature and high-pressure steam with the highest purity is gradually generated to meet the steam usage requirements of the subsequent hydrogen production process, thereby effectively improving the hydrogen production efficiency and reducing the hydrogen production cost.

[0088] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A lead-based reactor hydrogen production system, characterized in that: include: Lead-based reactor, primary heat exchange components, steam generation components and secondary circulation components; Part of the primary heat exchange component is accommodated in the lead-based reactor, and a heat exchange medium flows through the primary heat exchange component; A steam generating medium flows through the steam generating assembly, and an input end of the steam generating assembly is connected to an output end of the primary heat exchange assembly, so that the steam generating medium generates steam in the steam generating assembly after direct contact heat exchange with the heat exchange medium, and the steam is transported to the hydrogen generating assembly through a delivery pipeline, wherein the heat exchange medium and the steam generating medium have different flow directions, and the hydrogen generating assembly includes a solid oxide electrolyzer; The two ends of the secondary circulation component are respectively connected to the input end of the primary heat exchange component and the output end of the steam generation component to transport the heat exchange medium after heat exchange into the primary heat exchange component; The steam generating assembly includes a steam generator, a first distributor and a second distributor; From top to bottom, the steam generator is structured into a gas-liquid heat exchange area and a liquid-liquid heat exchange area, and a ceramic filler is provided in the gas-liquid heat exchange area; The first distributor is arranged above the gas-liquid heat exchange area, and the first distributor is connected to the output end of the primary heat exchange component, so that the heat exchange medium flows through the ceramic filler and then enters the liquid-liquid heat exchange area; The second distributor is arranged in the liquid-liquid heat exchange zone, and the second distributor is connected to the output end of the steam generating medium conveying pipeline to convey the steam generating medium to the liquid-liquid heat exchange zone and make the steam generating medium directly contact with the heat exchange medium.

2. The lead-based reactor hydrogen production system according to claim 1, characterized in that: The first distributor is provided with a plurality of first flow holes, and the flow directions of the plurality of first flow holes are arranged downward in a vertical direction.

3. The lead-based reactor hydrogen production system according to claim 2, characterized in that: The second distributor is provided with a plurality of second flow holes, and the flow direction of the second flow holes is arranged vertically upward; and / or, The flow direction of the second flow hole is arranged in an oblique upward direction.

4. The lead-based reactor hydrogen production system according to claim 1, characterized in that: A filtering area is also provided in the steam generator; The filter area is located at a predetermined distance above the gas-liquid heat exchange area, wherein a metal filter is provided in the filter area.

5. The lead-based reactor hydrogen production system according to claim 4, characterized in that: A buffer zone is also provided in the steam generator, and the buffer zone is provided above the filtering zone.

6. The lead-based reactor hydrogen production system according to any one of claims 1 to 5, characterized in that: The primary heat exchange component includes a heat exchanger and a heat exchange pipe; The heat exchanger is located in the lead-based reactor; The input end of the heat exchange pipe is in communication with the output end of the heat exchanger, and the output end of the heat exchange pipe is in communication with the input end of the steam generating assembly; Wherein, the heat exchange medium flows through the heat exchanger and the heat exchange pipe.

7. The lead-based reactor hydrogen production system according to claim 6, characterized in that: The secondary loop circulation assembly includes a circulation pipeline and a circulation pump; The output end of the circulation pipeline is communicated with the input end of the heat exchanger, and the input end of the circulation pipeline is connected to the output end of the steam generating assembly; The circulation pump is arranged on the circulation pipeline, and is used to transport the heat exchange medium after heat exchange to the heat exchanger.

8. The lead-based reactor hydrogen production system according to claim 1, characterized in that: A medium filter is provided in the delivery pipeline.

9. The lead-based reactor hydrogen production system according to claim 1, characterized in that: The heat exchange medium includes liquid high-temperature lead-bismuth alloy.

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