Biomass pyrolysis hydrogen production system
The pyrolytic flue gas generated during the preparation of biomass hardcarbon negative electrode materials is solved by treating the biomass pyrolysis hydrogen production system, and the effective utilization of hydrogen and nitrogen is achieved.
Patent Information
- Application Number
- CN202422047750.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-22
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-08-22
AI Technical Summary
The pyrolytic flue gas generated during the preparation of biomass hard carbon negative electrode material cannot be effectively treated, resulting in air pollution.
A biomass pyrolysis hydrogen production system is designed, including coking components, hydrogen production components and gas separation components. The coking components coke the biomass materials to generate pyrolysis flue gas. The hydrogen production components crack the pyrolysis flue gas into cracking gas, and the gas separation components separate hydrogen, nitrogen and carbon monoxide gas.
Effectively process and utilize the pyrolytic flue gas generated during the preparation of biomass hardcarbon negative electrode materials, reduce atmospheric pollution, and store and utilize available gases such as hydrogen and nitrogen.
Smart Images
Figure CN222989791U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of biomass material utilization, in particular to a biomass pyrolysis hydrogen production system. Background Art
[0002] Sodium-ion batteries have gradually become the focus of choice in the global energy storage market due to their advantages such as wide distribution of raw materials, abundant reserves and low cost. Compared with traditional graphite materials, biomass hard carbon negative electrode materials have better performance in sodium-ion batteries, and therefore have become the preferred material for large-scale commercialization of sodium-ion battery negative electrode materials.
[0003] At present, the preparation of biomass hard carbon negative electrode materials generally uses high temperature to carbonize biomass for preparation. This method and device for preparing biomass hard carbon will generate a large amount of pyrolysis flue gas during the preparation process. If these pyrolysis flue gases are not treated, it will cause serious air pollution. Therefore, it is necessary to propose a system that can treat and utilize the pyrolysis flue gas generated during the preparation of biomass hard carbon negative electrode materials. Utility Model Content
[0004] The main purpose of the utility model is to provide a system capable of processing and utilizing pyrolysis flue gas generated in the process of preparing biomass hard carbon negative electrode materials.
[0005] To achieve the above-mentioned purpose, the biomass pyrolysis hydrogen production system proposed in the utility model includes a coking component, a hydrogen production component and a gas separation component which are connected in sequence, the outer wall of the coking component encloses a coking chamber for accommodating biomass, the coking component is provided with a first heating element to coke the biomass material in the coking chamber, the hydrogen production component encloses a hydrogen production chamber, the outer wall of the coking component is also provided with a first protective gas inlet, a biomass material inlet and outlet and a pyrolysis flue gas outlet for communicating with the hydrogen production chamber; the hydrogen production chamber is used to accommodate a catalyst layer, the hydrogen production component is provided with a second heating element to crack the pyrolysis flue gas into cracked gas, the gas separation component includes a dehydrogenation unit and a denitrification unit which are connected in sequence to separate hydrogen and nitrogen in the cracked gas, the hydrogen production component is also provided with a cracked gas outlet, and the dehydrogenation unit is provided with a cracked gas inlet to communicate with the cracked gas outlet.
[0006] Preferably, the hydrogen production component includes an outer shell and a partition, the outer shell encloses a hydrogen production chamber, the pyrolysis flue gas inlet is provided at one end of the hydrogen production chamber, and the pyrolysis flue gas outlet is provided at the other end of the hydrogen production chamber, the partition is provided between the two ends of the hydrogen production chamber to divide the hydrogen production chamber into two sections, the partition is provided with a plurality of pores along the length direction of the hydrogen production chamber, the catalyst layer is provided on a side of the partition facing the air inlet of the hydrogen production chamber, and the second heating element is provided at an end of the hydrogen production component away from the pyrolysis flue gas outlet.
[0007] Preferably, the hydrogen production component is vertically arranged, the pyrolysis flue gas inlet is arranged at the upper end of the hydrogen production chamber, the pyrolysis gas outlet is arranged at the lower end of the hydrogen production chamber, the partition plate is horizontally arranged, and a plurality of buffer layers and a plurality of catalyst layers are arranged on the side of the partition plate facing the pyrolysis flue gas inlet, and the catalyst layers and the buffer layers are arranged in a stacked manner in sequence.
[0008] Preferably, the gas separation component includes a dehydrogenation unit and a denitrification unit. The outer shell of the dehydrogenation unit encloses a dehydrogenation chamber. The dehydrogenation unit is provided with a pyrolysis gas inlet to communicate the dehydrogenation chamber with the pyrolysis gas outlet. The dehydrogenation unit is further provided with a hydrogen outlet for transporting the removed hydrogen to the outside of the dehydrogenation chamber. The outer shell of the denitrification unit encloses a denitrification chamber. The dehydrogenation unit is provided with a first exhaust port communicating with the denitrification chamber to transport the dehydrogenated pyrolysis gas into the denitrification chamber. The denitrification unit is provided with a nitrogen outlet for transporting the removed nitrogen to the outside of the denitrification chamber. The denitrification unit is further provided with a second exhaust port for transporting the denitrified dehydrogenated pyrolysis gas to the outside of the denitrification chamber.
[0009] Preferably, the biomass pyrolysis hydrogen production system further includes a gas storage component. The internal space of the gas storage component is respectively communicated with the hydrogen outlet and the second exhaust port to receive and store the hydrogen transported by the hydrogen outlet and the denitrified dehydrogenated pyrolysis gas transported by the second exhaust port.
[0010] Preferably, the biomass pyrolysis hydrogen production system further includes a crystal form adjustment component. The outer shell of the crystal form adjustment component encloses a crystal form adjustment chamber. The crystal form adjustment component is provided with a second protective gas inlet, and the second protective gas inlet is communicated with the nitrogen outlet through a protective gas pipeline to transport nitrogen into the crystal form adjustment chamber. A storage container for containing coked biomass is arranged in the crystal form adjustment chamber. An inlet and outlet for the storage container is formed on the outer shell of the crystal form adjustment chamber. The crystal form adjustment component is provided with a third heating element to heat the coked biomass, so as to adjust the crystal form of the coked biomass and convert it into a biomass hard carbon negative electrode material.
[0011] Preferably, a feeding component is arranged in the hydrogen production chamber. The feeding component forms a feeding groove. One end of the feeding component is connected to the top of the hydrogen production chamber, and the other end of the feeding component extends into the hydrogen production chamber. The inlet of the feeding groove is used to communicate with the outside of the hydrogen production chamber, a sealing element is arranged at the inlet, and the outlet of the feeding groove is used to feed materials into the hydrogen production chamber.
[0012] Preferably, the pyrolysis flue gas outlet and the pyrolysis flue gas inlet are communicated through a pyrolysis flue gas pipeline. Along the length direction of the pyrolysis flue gas pipeline between the two ends of the pyrolysis flue gas pipeline, a plurality of heating coils are sequentially arranged, and each of the heating coils is respectively wound around the outer wall surface of the pyrolysis flue gas pipeline.
[0013] Preferably, a first cooling interlayer is arranged on the outer wall surface of the coking component. The outer shell of the first cooling interlayer is spaced from the outer wall surface of the coking component to enclose a first cooling space for passing coolant; a second cooling interlayer is arranged on the outer wall surface of the crystal form adjusting component. The outer shell of the second cooling interlayer is spaced from the outer wall surface of the crystal form adjusting component to enclose a second cooling space for passing coolant.
[0014] Preferably, a heat insulation layer is arranged on the inner wall surface of the coking chamber, and the heat insulation layer is a heat insulation calcium silicate structural member or a composite silicate structural member.
[0015] In the technical solution of the present utility model, when preparing the anode material, the biomass material is put into the coking chamber from the biomass material inlet and outlet, the biomass material inlet and outlet are closed, and protective gas is introduced into the coking chamber through the protective gas inlet. The first heating element cokes the biomass material in the coking chamber and generates pyrolysis flue gas. The pyrolysis flue gas enters the hydrogen production chamber, and the second heating element heats the pyrolysis flue gas in the hydrogen production chamber. The heated pyrolysis flue gas passes through the catalyst layer and is cracked into cracked gas. The cracked gas passes through the gas separation component to remove hydrogen and nitrogen, and the remaining carbon monoxide gas, completing the entire coking process. At this time, the first heating element and the second heating element are closed, and the staff can take out the coked biomass material from the biomass material inlet and outlet for subsequent treatment to produce the anode material;
[0016] In summary, by arranging the hydrogen production component and the gas separation component, the hydrogen production component and the gas separation component further crack the pyrolysis flue gas generated by the coking component coking the biomass material into cracked gas, and then the hydrogen, nitrogen and carbon monoxide gas in the cracked gas are separated by the gas separation component for utilization, so as to achieve the purpose of treating and utilizing the pyrolysis flue gas generated in the process of preparing the biomass hard carbon anode material. Description of the Drawings
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.
[0018] Figure 1This is a schematic structural diagram of an embodiment of the biomass pyrolysis hydrogen production system of the present utility model.
[0019] Explanation of the reference numerals in the attached drawings:
[0020] 1 - Coking component; 101 - Coking chamber; 102 - Biomass material inlet and outlet; 103 - First protective gas inlet; 104 - First heating element; 105 - First cooling interlayer; 2 - Pyrolysis flue gas pipeline; 3 - Heating coil; 4 - Hydrogen production component; 401 - Partition; 402 - Buffer layer; 403 - Catalyst layer; 404 - Second heating element; 5 - Dehydrogenation unit; 6 - Denitrification unit; 7 - Gas storage component; 8 - Crystal form adjustment component; 801 - Second cooling interlayer; 802 - Third heating element; 803 - Container inlet and outlet; 9 - Holding container; 10 - Discharging component; 11 - Protective gas pipeline; 12 - Main machine.
[0021] The realization, functional characteristics and advantages of the purpose of the present utility model will be further described with reference to the embodiments and the attached drawings. Specific embodiments
[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the attached drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0023] It should be noted that all the directional indications (such as up, down, left, right, front, back,...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the attached drawings). If the specific posture changes, the directional indications will also change accordingly.
[0024] In addition, the descriptions such as "first" and "second" in the present utility model are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.
[0025] In the present utility model, unless otherwise clearly specified and defined, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0026] In addition, the technical solutions between various embodiments of the present utility model can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.
[0027] The present utility model provides a biomass pyrolysis hydrogen production system.
[0028] Please refer to Figure 1 , this biomass pyrolysis hydrogen production system includes a coking component 1, a hydrogen production component 4, and a gas separation component that are connected in sequence. The outer wall of the coking component 1 encloses a coking chamber 101 for accommodating biomass. The coking component 1 is provided with a first heating element 104 to coke the biomass material in the coking chamber 101. The hydrogen production component 4 encloses a hydrogen production chamber. The outer wall of the coking component 1 is further provided with a first protective gas inlet 103, a biomass material inlet and outlet 102, and a pyrolysis flue gas outlet for communicating with the hydrogen production chamber. The hydrogen production chamber is used to accommodate a catalyst layer 403. The hydrogen production component 4 is provided with a second heating element 404 to crack the pyrolysis flue gas into cracked gas. The gas separation component includes a dehydrogenation unit 5 and a denitrification unit 6 that are connected in sequence to separate hydrogen and nitrogen in the cracked gas. The hydrogen production component 4 is further provided with a cracked gas outlet. The dehydrogenation unit 5 is provided with a cracked gas inlet to communicate with the cracked gas outlet. The cracked gas includes hydrogen, carbon monoxide, and nitrogen. The main component of the cracked gas after denitrification is carbon monoxide.
[0029] Specifically, the biomass material is obtained by dehydrating biomass in a drying oven. The first heating element 104 is a U-shaped silicon carbide rod, and the heating temperature is 200 - 800 °C. The nitrogen flow rate at the first protective gas inlet is 2 - 15 L / min. A first thermocouple is also provided in the coking chamber 101 for temperature measurement. A second thermocouple is provided in the hydrogen production chamber to detect the temperature in the hydrogen production chamber. The first thermocouple is a nickel-chromium - nickel alumel thermocouple (K type), with a temperature measurement range of 100 - 1300 °C and a temperature measurement accuracy of ±1 °C. The biomass material is heated and coked in the coking component to produce CO, CO2, H2O, C x Hy O z Small molecule gas products such as these enter the hydrogen production component 4, C x H y O z After further heating by the second heating element 404, CO, CO2 and H2O are cracked into H2O and small molecules. When CO, CO2 and H2O pass through the catalyst layer, under the catalytic action of the catalyst layer, the small molecules react with H2O or CO2 to generate CO and H2.
[0030] In the technical solution of the utility model, when it is necessary to prepare the negative electrode material, the biomass material is placed into the coking chamber 101 from the biomass material inlet and outlet 102, the biomass material inlet and outlet 102 is closed, and the protective gas is introduced into the coking chamber 101 through the protective gas inlet, the first heating element 104 cokes the biomass material in the coking chamber 101 and generates pyrolysis flue gas, the pyrolysis flue gas enters the hydrogen production chamber, the second heating element 404 heats the pyrolysis flue gas in the hydrogen production chamber, the heated pyrolysis flue gas passes through the catalyst layer 403, and is cracked into cracked gas, the cracked gas passes through the gas separation component to remove hydrogen and nitrogen, and the remaining carbon monoxide gas is completed, and the whole coking process is completed. At this time, the first heating element 104 and the second heating element 404 are closed, and the staff can take out the coked biomass material from the biomass material inlet and outlet 102, and perform subsequent processing to make the negative electrode material;
[0031] To summarize, by setting up the hydrogen production component 4 and the gas separation component, the hydrogen production component 4 and the gas separation component further crack the pyrolysis flue gas generated by the coking biomass material of the coking component 1 into cracking gas, and then separate the hydrogen, nitrogen and carbon monoxide gas in the cracking gas through the gas separation component for utilization, thereby achieving the purpose of treating and utilizing the pyrolysis flue gas generated in the process of preparing biomass hard carbon negative electrode material.
[0032] Preferably, the hydrogen production component 4 includes a shell and a partition 401, the shell encloses a hydrogen production chamber, one end of the hydrogen production chamber is provided with the pyrolysis flue gas inlet, the other end of the hydrogen production chamber is provided with the pyrolysis flue gas outlet, the partition 401 is provided between the two ends of the hydrogen production chamber to separate the hydrogen production chamber into two sections, the partition 401 is provided with a plurality of pores along the length direction of the hydrogen production chamber, the side of the partition 401 facing the air inlet of the hydrogen production chamber is provided with the catalyst layer 403, and the second heating element 404 is provided at one end of the hydrogen production component 4 away from the pyrolysis flue gas outlet. In this embodiment, the second heating element 404 is provided at one end of the hydrogen production component 4 away from the pyrolysis flue gas outlet to heat the pyrolysis flue gas in a section of the hydrogen production chamber away from the pyrolysis flue gas outlet, and the heated pyrolysis flue gas passes through the catalyst layer 403, is cracked into cracked gas, and is discharged from the cracked gas outlet.
[0033] Specifically, the heating temperature of the second heating element 404 is 800 - 1100 °C, and the thickness of the partition plate 401 is 10 - 35 mm.
[0034] Preferably, the hydrogen production component 4 is arranged vertically, the pyrolysis flue gas inlet is arranged at the upper end of the hydrogen production chamber, the pyrolysis gas outlet is arranged at the lower end of the hydrogen production chamber, the partition plate 401 is arranged horizontally, and a plurality of buffer layers 402 and a plurality of catalyst layers 403 are arranged on the side of the partition plate 401 facing the pyrolysis flue gas inlet. The catalyst layer 403 and the buffer layer 402 are arranged in a stacked manner in sequence. By arranging the catalyst layer 403 and the buffer layer 402 in a stacked manner in sequence, the buffer layer 402 is used to filter substances such as tar and fine dust in the pyrolysis flue gas, which is beneficial to reducing carbon deposition on the surface area of the catalyst layer 403 and extending the service life of the catalyst; in this embodiment, the buffer layer 402 is a biomass coke layer formed by using coked biomass material debris.
[0035] Preferably, the gas separation component includes a dehydrogenation unit 5 and a denitrification unit 6. The outer shell of the dehydrogenation unit 5 encloses a dehydrogenation chamber. The dehydrogenation unit 5 is provided with a pyrolysis gas inlet to connect the dehydrogenation chamber with the pyrolysis gas outlet. The dehydrogenation unit 5 is also provided with a hydrogen outlet for transporting the removed hydrogen to the outside of the dehydrogenation chamber. The outer shell of the denitrification unit 6 encloses a denitrification chamber. The dehydrogenation unit 5 is provided with a first exhaust port communicating with the denitrification chamber to transport dehydrogenated pyrolysis gas into the denitrification chamber. The denitrification unit 6 is provided with a nitrogen outlet for transporting the removed nitrogen to the outside of the denitrification chamber. The denitrification unit 6 is also provided with a second exhaust port for transporting the denitrified dehydrogenated pyrolysis gas to the outside of the denitrification chamber. In this embodiment, the dehydrogenation unit 5 and the denitrification unit 6 are arranged vertically. The pyrolysis gas inlet is arranged at the bottom end of the dehydrogenation unit 5, the hydrogen outlet is arranged at the top end of the dehydrogenation unit 5, and the first exhaust port is arranged on the side wall at the lower end of the dehydrogenation unit 5.
[0036] Preferably, the biomass pyrolysis hydrogen production system further includes a gas storage component 7. The internal space of the gas storage component 7 is respectively communicated with the hydrogen outlet and the second exhaust port to receive and store the hydrogen transported by the hydrogen outlet and the denitrified dehydrogenated pyrolysis gas transported by the second exhaust port. The hydrogen removed by the dehydrogenation unit 5 and the carbon monoxide generated after denitrification by the denitrification unit 6 are mixed and stored in the gas storage component 7, and can be used for methanol synthesis or directly as water gas in the future.
[0037] Preferably, the biomass pyrolysis hydrogen production system further includes a crystal form adjustment component 8. The outer shell of the crystal form adjustment component 8 encloses to form a crystal form adjustment chamber. The crystal form adjustment component 8 is provided with a second protective gas inlet, and the second protective gas inlet is communicated with the nitrogen outlet through a protective gas pipeline 11 to convey nitrogen into the crystal form adjustment chamber. A storage container 9 for containing coked biomass is arranged in the crystal form adjustment chamber. An inlet and outlet 803 for the storage container 9 to enter and exit is formed on the outer shell of the crystal form adjustment chamber. The crystal form adjustment component 8 is provided with a third heating element 802 to heat the coked biomass, so as to adjust the crystal form of the coked biomass and convert it into a biomass hard carbon negative electrode material. The second protective gas inlet is communicated with the nitrogen outlet through the protective gas pipeline 11 to reuse the nitrogen removed by the denitrification unit 6; in this embodiment, a third thermocouple is arranged in the crystal form adjustment chamber to detect the temperature in the crystal form adjustment chamber.
[0038] Specifically, the biomass pyrolysis hydrogen production system further includes a main unit 12. The main unit 12 is respectively connected to the first thermocouple, the second thermocouple, the third thermocouple, the first heating element 104, the second heating element 404 and the third heating element 802 to control the power of the first heating element 104, the second heating element 404 and the third heating element 802, so as to adjust the temperatures in the coking chamber 101, the hydrogen production chamber and the crystal form adjustment chamber. Specifically, adjusting each temperature can be adjusted by the user on the main unit 12. The temperature is detected by the thermocouple, and the power of the heating element is controlled by the main unit to adjust the heating temperature, which is a common technical means and will not be elaborated here.
[0039] Furthermore, a gas detection element is also arranged in the gas storage component 7 to detect the gas composition in the gas storage component 7. The gas detection element is connected to the main unit 12 to transmit the detected gas composition data to the main unit 12.
[0040] Preferably, a feeding component 10 is arranged in the hydrogen production chamber. The feeding component 10 forms a feeding groove. One end of the feeding component 10 is connected to the top of the hydrogen production chamber, and the other end of the feeding component 10 extends into the hydrogen production chamber. The feeding port of the feeding groove is used for communicating with the outside of the hydrogen production chamber, and a sealing element is arranged at the feeding port. The discharging port of the feeding groove is used for feeding materials into the hydrogen production chamber. The catalyst is put into the hydrogen production chamber through the feeding element to form the catalyst layer 403 on the partition plate 401; in this embodiment, the feeding component 10 includes a rotating element and a feeding element. One end of the rotating element is rotatably connected to the top of the hydrogen production chamber, the rotating shaft of the rotating element is arranged vertically, one end of the feeding element is rotatably connected to the end of the rotating element away from the top of the hydrogen production chamber, the other end of the feeding element forms the discharging port, and the rotating shaft of the feeding element is perpendicular to the rotating shaft of the rotating element.
[0041] Preferably, the pyrolysis flue gas outlet and the pyrolysis flue gas inlet are connected through a pyrolysis flue gas pipeline 2. A plurality of heating coils 3 are sequentially arranged along the length direction of the pyrolysis flue gas pipeline 2 between the two ends of the pyrolysis flue gas pipeline 2, and each of the heating coils 3 is respectively wound around the outer wall surface of the pyrolysis flue gas pipeline 2. The heating coils 3 are provided to ensure that the pyrolysis flue gas always passes through in the form of gas in the pyrolysis flue gas pipeline 2 until it enters the hydrogen production chamber.
[0042] Preferably, a first cooling clip 105 is arranged on the outer wall surface of the coking component 1. The outer shell of the first cooling clip 105 is spaced from the outer wall surface of the coking component 1 to enclose a first cooling space for passing a coolant; a second cooling sandwich 801 is arranged on the outer wall surface of the crystal form adjusting component 8. The outer shell of the second cooling sandwich 801 is spaced from the outer wall surface of the crystal form adjusting component 8 to enclose a second cooling space for passing a coolant. The first cooling clip 105 is provided to isolate the high temperature in the coking chamber 101, and the second cooling sandwich 801 is provided to isolate the high temperature in the crystal form adjusting chamber.
[0043] Preferably, a heat insulation layer is arranged on the inner wall surface of the coking chamber 101, and the heat insulation layer is a heat-insulating calcium silicate structural member or a composite silicate structural member. The heat insulation layer is provided to reduce the heat loss in the coking chamber 101 and maintain the stability of the thermal field.
[0044] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the concept of the present invention by using the content of the specification and drawings of the present invention, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present invention.
Claims
1. A biomass pyrolysis hydrogen production system, characterized in that: It comprises a coking component, a hydrogen production component and a gas separation component which are connected in sequence, wherein the outer wall of the coking component encloses a coking chamber for accommodating biomass, the coking component is provided with a first heating element for coking the biomass material in the coking chamber, the hydrogen production component encloses a hydrogen production chamber, the outer wall of the coking component is also provided with a first protective gas inlet, a biomass material inlet and outlet and a pyrolysis flue gas outlet for communicating with the hydrogen production chamber; the hydrogen production chamber is used to accommodate a catalyst layer, the hydrogen production component is provided with a second heating element for cracking the pyrolysis flue gas into cracking gas, the gas separation component comprises a dehydrogenation unit and a denitrification unit which are connected in sequence to separate hydrogen and nitrogen in the cracking gas, the hydrogen production component is also provided with a cracking gas outlet, and the dehydrogenation unit is provided with a cracking gas inlet for communicating with the cracking gas outlet.
2. The biomass pyrolysis hydrogen production system according to claim 1, characterized in that: The hydrogen production component includes an outer shell and a partition, the outer shell encloses a hydrogen production chamber, a pyrolysis flue gas inlet is provided at one end of the hydrogen production chamber, and the pyrolysis flue gas outlet is provided at the other end of the hydrogen production chamber, the partition is provided between the two ends of the hydrogen production chamber to divide the hydrogen production chamber into two sections, the partition is provided with a plurality of air holes along the length direction of the hydrogen production chamber, the catalyst layer is provided on a side of the partition facing the air inlet of the hydrogen production chamber, and the second heating element is provided at one end of the hydrogen production component away from the pyrolysis flue gas outlet.
3. The biomass pyrolysis hydrogen production system according to claim 2, characterized in that: The hydrogen production component is arranged vertically, the pyrolysis flue gas inlet is arranged at the upper end of the hydrogen production chamber, the cracking gas outlet is arranged at the lower end of the hydrogen production chamber, the partition is arranged horizontally, and the side of the partition facing the pyrolysis flue gas inlet is provided with multiple buffer layers and multiple catalyst layers, and the catalyst layer and the buffer layer are stacked in sequence.
4. The biomass pyrolysis hydrogen production system according to claim 1, characterized in that: The gas separation component comprises a dehydrogenation unit and a denitrification unit, the outer shell of the dehydrogenation unit encloses a dehydrogenation chamber, the dehydrogenation unit is provided with a cracking gas inlet to connect the dehydrogenation chamber with the cracking gas outlet, the dehydrogenation unit is also provided with a hydrogen outlet for conveying the dehydrogenated hydrogen to the outside of the dehydrogenation chamber, the outer shell of the denitrification unit encloses a denitrification chamber, the dehydrogenation unit is provided with a first exhaust port to communicate with the denitrification chamber to convey the dehydrogenated cracking gas into the denitrification chamber, the denitrification unit is provided with a nitrogen outlet to convey the denitrified nitrogen to the outside of the denitrification chamber, and the denitrification unit is also provided with a second exhaust port to convey the dehydrogenated cracking gas after denitrification to the outside of the denitrification chamber.
5. The biomass pyrolysis hydrogen production system according to claim 4, characterized in that: It also includes a gas storage component, the internal space of which is communicated with the hydrogen outlet and the second exhaust port respectively, so as to receive and store the hydrogen delivered by the hydrogen outlet and the denitrogenated dehydrogenated cracked gas delivered by the second exhaust port.
6. The biomass pyrolysis hydrogen production system according to claim 1, characterized in that: It also includes a crystal form adjustment component, the shell of the crystal form adjustment component is enclosed to form a crystal form adjustment chamber, the crystal form adjustment component is provided with a second protective gas inlet, the second protective gas inlet is connected with the nitrogen outlet through a protective gas pipeline to transport nitrogen into the crystal form adjustment chamber, the crystal form adjustment chamber is provided with a holding container for holding charred biomass, the shell of the crystal form adjustment chamber is formed with a container inlet and outlet for the holding container to enter and exit, the crystal form adjustment component is provided with a third heating element to heat the charred biomass, thereby adjusting the crystal form of the charred biomass to convert it into a biomass hard carbon negative electrode material.
7. The biomass pyrolysis hydrogen production system according to claim 3, characterized in that: A discharge component is provided in the hydrogen production chamber, and the discharge component forms a discharge trough. One end of the discharge component is connected to the top of the hydrogen production chamber, and the other end of the discharge component extends into the hydrogen production chamber. The inlet of the discharge trough is used to communicate with the outside of the hydrogen production chamber. A sealing element is provided at the inlet, and the outlet of the discharge trough is used to discharge materials into the hydrogen production chamber.
8. The biomass pyrolysis hydrogen production system according to claim 2, characterized in that: The pyrolysis flue gas outlet is connected to the pyrolysis flue gas inlet through a pyrolysis flue gas pipe. A plurality of heating coils are sequentially arranged between the two ends of the pyrolysis flue gas pipe along the length direction of the pyrolysis flue gas pipe, and each of the heating coils surrounds the outer wall surface of the pyrolysis flue gas pipe.
9. The biomass pyrolysis hydrogen production system according to claim 6, characterized in that: The outer wall surface of the coking component is provided with a first cooling interlayer, and the outer shell of the first cooling interlayer is spaced apart from the outer wall surface of the coking component to enclose a first cooling space for passing the cooling liquid; the outer wall surface of the crystal form adjustment component is provided with a second cooling interlayer, and the outer shell of the second cooling interlayer is spaced apart from the outer wall surface of the crystal form adjustment component to enclose a second cooling space for passing the cooling liquid.
10. The biomass pyrolysis hydrogen production system according to any one of claims 1 to 9, characterized in that: The inner wall surface of the coking chamber is provided with a heat-insulating layer, and the heat-insulating layer is a heat-insulating calcium silicate structural member or a composite silicate structural member.