Hydrogen derivative in-station hydrogen production and refueling station and operation method

Abstract

The invention relates to the technical field of hydrogenation, and discloses a hydrogen derivative in-station hydrogen production and refueling station and an operation method.The hydrogen derivative in-station hydrogen production and refueling station is composed of a hydrogen derivative hydrogen production end, a buffer boosting system, a low-pressure storage tank, a high-pressure compressor, a multi-stage high-pressure storage tank, a pre-cooling system and a filling module; the invention further discloses an operation method of the hydrogen derivative in-station hydrogen production and refueling station. The operation method comprises the steps that information intercommunication is conducted between the hydrogen fuel cell vehicle and the refueling station; forming a future refueling demand curve of the hydrogen refueling station based on the vehicle information and the station arrival refueling time which can be selected by the hydrogen fuel cell vehicle; the hydrogen refueling station combines the formed future refueling demand curve to carry out in-station hydrogen production feedback production; the in-station control system controls boosting storage; and when the vehicle arrives at the station, the filling module performs graded gas taking and filling. High-pressure gaseous hydrogen in the station is in a fixed range, the remaining amount of gaseous hydrogen in the station is reduced, the safety level of the hydrogen refueling station is guaranteed, and the cost of a storage tank in the station and compression energy consumption are reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of hydrogenation, and in particular relates to a hydrogenation station for producing hydrogen in a hydrogen derivative station and an operation method thereof. Background Art

[0002] In the hydrogen transportation chain of production-storage-transmission-refueling-use, hydrogen refueling stations play the role of terminal energy replenishment facilities and are considered to be the key cornerstone and basic condition for the development and application of hydrogen energy in the transportation field and the promotion of hydrogen fuel vehicles. Most of the existing hydrogen refueling station routes in my country use 20MPa high-pressure long-tube trailers, which have low transportation density and high cost, and cannot meet the large-scale long-distance transportation needs of hydrogen consumption centers and resource centers. In the face of this situation, the use of hydrogen derivative (methanol / ammonia / organic liquid, etc.) in-station hydrogen production technology is expected to transform the hydrogen transportation supply system and achieve flexible, highly safe and low-cost supply of hydrogen. my country is currently in a stage of vigorous development in hydrogen production at hydrogen derivative stations, and there are demonstration projects for various types of hydrogen derivative in-station hydrogen production and hydrogenation stations.

[0003] The existing design of hydrogen production systems in hydrogen derivative stations is coupled with traditional high-pressure hydrogen refueling stations. On the one hand, it fails to take into account the diversity of hydrogen production methods. The pressure, temperature, flow rate, etc. of different hydrogen derivative hydrogen production processes are different. The current solutions mostly adopt individual case designs, which have poor scalability. On the other hand, it does not consider the impact of the introduction of the hydrogen production end on traditional hydrogen refueling stations. In order to ensure the refueling capacity, excessive hydrogen production is still adopted. A large amount of high-pressure gaseous hydrogen is stored in the station, which greatly increases the danger level and construction cost of the hydrogen refueling station. The advantages of hydrogen production in the station are not fully utilized, especially in the early stage of hydrogen station operation. The historical data is blank or the data volume is small, and the hydrogen refueling stations under different operating scenarios are affected by many factors, and the demand curves are quite different, making it difficult to ensure the effective supply of hydrogen refueling stations. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a hydrogen derivative in-station hydrogen production and refueling station and an operation method, which can ensure the effective supply of hydrogen refueling stations when the historical data of the hydrogen refueling station is blank or the data volume is small in the early stage of operation, and the hydrogen refueling stations in different operating scenarios are affected by various factors and the demand curves vary greatly.

[0005] In order to achieve the above-mentioned purpose of ensuring effective supply of hydrogen refueling stations when the demand curves are quite different, the present invention provides the following technical solutions:

[0006] A hydrogen derivative in-station hydrogen production and hydrogenation station, comprising:

[0007] A hydrogen derivative hydrogen production end, and a buffer boosting system arranged at the outlet of the hydrogen derivative hydrogen production end, and the outlet of the hydrogen derivative hydrogen production end is connected to the inlet of the buffer boosting system;

[0008] The hydrogen derivative station-based hydrogen production and hydrogenation station further comprises:

[0009] A hydrogen storage tank and a high-pressure compressor connected to the outlet pipeline of the hydrogen storage tank,

[0010] The inlet of the hydrogen storage tank is connected to the outlet of the buffer boosting system through a pipeline, the outlet pipeline of the hydrogen storage tank is connected to the inlet of the high-pressure compressor, a low-pressure tank inlet linkage valve is also provided on the inlet pipeline of the hydrogen storage tank, and a high-pressure tank inlet linkage valve is provided on the outlet pipeline of the hydrogen storage tank;

[0011] A multi-stage storage tank and a precooling system connected to the multi-stage storage tank, wherein the outlet of the high-pressure compressor is connected to the inlet end pipeline of the multi-stage storage tank, and the inlet of the precooling system is connected to the outlet of the multi-stage storage tank;

[0012] A filling module, wherein the inlet of the filling module is connected to the outlet of the precooling system.

[0013] 3. Further, the multi-stage storage tank comprises:

[0014] A high-pressure multistage storage tank, a medium-pressure multistage storage tank and a low-pressure multistage storage tank, wherein the high-pressure multistage storage tank, the medium-pressure multistage storage tank and the low-pressure multistage storage tank are in parallel mode, and the inlet end pipeline of the high-pressure multistage storage tank, the inlet end pipeline of the medium-pressure multistage storage tank and the inlet end pipeline of the low-pressure multistage storage tank are respectively provided with a high-pressure inlet control valve, a medium-pressure inlet control valve and a low-pressure inlet control valve, and are respectively connected to the outlet of the high-pressure compressor;

[0015] The outlet pipeline of the high-pressure multi-stage storage tank, the outlet pipeline of the medium-pressure multi-stage storage tank and the outlet pipeline of the low-pressure multi-stage storage tank are respectively provided with a high-pressure outlet control valve, a medium-pressure outlet control valve and a low-pressure outlet control valve, and are respectively connected to the inlet of the precooling system;

[0016] Furthermore, the low-pressure storage tank 4 is a 20MPa long tube trailer.

[0017] A method for operating a hydrogen production and hydrogenation station in a hydrogen derivative station, wherein the method is implemented using the hydrogen production and hydrogenation station in a hydrogen derivative station, and the method comprises the following steps:

[0018] S1: The hydrogen fuel cell vehicle is connected to the key information of the hydrogen refueling station through the cloud service platform or the Internet of Things system. The hydrogen fuel cell vehicle sends its own location and the remaining hydrogen in the vehicle tank to the hydrogen refueling station through the cloud service platform or the Internet of Things system, and chooses to make an appointment for the estimated refueling time and refueling amount;

[0019] S2: The refueling reservation information of multiple vehicles forms the future refueling demand curve of the hydrogen refueling station. Hydrogen fuel cell vehicles can choose their own arrival time for refueling based on the remaining gaseous hydrogen in the hydrogen refueling station and the expected number of vehicles in the future, refueling at off-peak hours and reducing the waiting time for refueling;

[0020] S3: The future refueling demand curve formed by the hydrogen refueling station is combined with the remaining hydrogen in the buffer tank, low-pressure storage tank, and multi-stage high-pressure storage tank in the station, and the hydrogen production feedback production in the station based on the distance of the hydrogen fuel cell vehicle from the station, the remaining hydrogen in the on-board storage tank, the expected hydrogen refueling time and the refueling amount;

[0021] S4: The station control system controls the compressor and hydrogen storage tank valves to boost the pressure and store hydrogen;

[0022] S5: When the vehicle arrives at the station, the control system in the station controls the pre-cooling and filling modules to perform graded gas extraction and filling.

[0023] Furthermore, the hydrogen production feedback production in the station is to ensure:

[0024] 1. The gaseous hydrogen production in the next period of time in the station + the gaseous hydrogen refueling volume in the station ≥ the hydrogen reservation demand in the next period of time × random parameter;

[0025] 2. The gaseous hydrogen production in the next period of time in the station + the remaining gaseous hydrogen in the station ≤ the hydrogen reservation demand in the next period of time × random parameters + the maximum remaining gaseous hydrogen in the station storage tank.

[0026] Furthermore, the gaseous hydrogen production in the next period should be at the maximum allowable production rate of the hydrogen derivative hydrogen production end under the premise of meeting conditions one and two. If condition one cannot be met, the hydrogen derivative hydrogen production end should be adjusted to the maximum production rate of the hydrogen derivative hydrogen production end to ensure supply, and notify subsequent refueling vehicles of the estimated waiting time and subsequent possible idle time for refueling through the interconnected system.

[0027] Furthermore, the range of the randomness parameter is 1.1-1.3.

[0028] Furthermore, the time range of the next period is 0.5 hours to 2 hours.

[0029] Furthermore, the key information of the hydrogen fuel cell vehicle includes: the remaining hydrogen in the on-board storage tank, the vehicle location, the scheduled refueling time, and the scheduled hydrogen refueling amount.

[0030] Furthermore, the key information of the hydrogen refueling station includes: the remaining amount of gaseous hydrogen in the station, the expected refueling amount / refueling vehicle number in the next period, and the hydrogen production in the next period.

[0031] Compared with the prior art, the present invention provides a hydrogen production and hydrogenation station and operation method for hydrogen derivatives in a station, which has the following beneficial effects:

[0032] Easy to popularize and industrialize: The present invention can realize the effective combination of hydrogen derivatives and traditional high-pressure hydrogen supply hydrogenation stations. Hydrogenation stations in different operating scenarios such as closed parks, amusement parks, scenic sightseeing buses, etc. are affected by various factors and the demand curves vary greatly. The problem of ensuring the effective supply of hydrogenation stations has more obvious process advantages.

[0033] Diversification of raw materials: Freed from the constraints of hydrogen sources, the present invention achieves uniformity in physical parameters such as pressure, flow rate, and temperature of hydrogen produced at the outlet of different hydrogen derivative stations through a universal buffer boosting scheme, meeting the gas unloading requirements of high-pressure hydrogen refueling stations.

[0034] Reducing hydrogen storage costs: When the hydrogen fuel cell vehicle of the present invention enters the hydrogen refueling station stage, the realization of the station interconnection function and the application of the feedback adjustment production strategy keep the high-pressure gaseous hydrogen in the station in a fixed range. Compared with overproduction to ensure refueling, the remaining gaseous hydrogen in the station is reduced, ensuring the safety level of the hydrogen refueling station, reducing the cost of storage tanks and compression energy consumption in the station. The station interconnection system and the feedback production strategy in a hydrogen refueling station with a daily hydrogen supply of 500kg, compared with the original high-pressure hydrogen refueling station process and the hydrogen production hydrogen refueling station that does not adopt the station interconnection system, the total mass of the storage tank volume is reduced by 20.2%-25.1%; in a hydrogen refueling station with a daily hydrogen supply of 1000kg, the total mass of the storage tank volume is reduced by 21.4%-28.3%. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of the hydrogen production and hydrogenation station system in the hydrogen derivative station of the present invention;

[0036] Figure 2 This is a schematic diagram of a buffer boost system of the present invention;

[0037] Figure 3 Schematic diagram of the buffer boosting system of the hydrogen production and hydrogenation station in the hydrogen derivative station of the present invention

[0038] Figure 4 This is a flowchart of the method for operating a hydrogen production and hydrogenation station in a hydrogen derivative station according to the present invention.

[0039] In the figure: 1. Hydrogen derivative hydrogen production end, 2. Buffer boosting system, 201. Hydrogen purity detection device, 202. Buffer tank inlet linkage valve, 203. Buffer tank, 204. Buffer tank outlet linkage valve, 205. Low-pressure compressor, 3. Low-pressure storage tank inlet linkage valve, 4. Hydrogen storage tank, 5. High-pressure storage tank outlet linkage valve, 6. High-pressure compressor, 7. High-pressure multi-stage storage tank, 8. Medium-pressure multi-stage storage tank, 9. Low-pressure multi-stage storage tank, 10. Pre-cooling system, 11. Filling module. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] It should be noted that:

[0042] The next time period mentioned in the present invention refers to the time period during which the hydrogen production end maintains a constant hydrogen production rate within a certain period of time.

[0043] The amount of gaseous hydrogen that can be refilled in the station mentioned in the present invention refers to the remaining amount of hydrogen in the multi-stage storage tanks in the station - the amount of hydrogen in the multi-stage storage tanks used to maintain the lower limit of the pressure.

[0044] The randomness parameter described in the present invention refers to a surplus parameter for vehicles arriving at the station without scheduled refueling.

[0045] The pressure range of the high-pressure multi-stage storage tank of the present invention is: 40-45MPa, the pressure range of the medium-pressure multi-stage storage tank is: 35-40MPa, and the pressure range of the low-pressure multi-stage storage tank is: 20-30MPa.

[0046] The present invention provides a technical solution:

[0047] Please refer to Figure 1 and Figure 2 , a hydrogen derivative in-station hydrogenation station, comprising:

[0048] A hydrogen derivative hydrogen production end 1, and a buffer boost system 2 arranged at the outlet of the hydrogen derivative hydrogen production end 1, and the outlet of the hydrogen derivative hydrogen production end 1 is connected to the inlet of the buffer boost system 2; the hydrogen derivative hydrogen production end 1 adopts a small-scale skid-mounted hydrogen production reaction device, and the specifications of the hydrogen release reaction unit are selected in combination with the heat supply in the station, the open space area and the scale of the hydrogenation station. Hydrogen derivatives include methanol, ammonia, nitrogen heterocycles, dibenzyltoluene, toluene and other derivatives with mature hydrogen production technology, storage and transportation technology.

[0049] The hydrogen derivative station-based hydrogen production and hydrogenation station further comprises:

[0050] A hydrogen storage tank 4 and a high-pressure compressor 6 connected to the outlet pipeline of the hydrogen storage tank 4; the inlet of the hydrogen storage tank 4 is connected to the outlet of the buffer boosting system 2 through a pipeline, and is used to store hydrogen at the outlet of the buffer boosting system 2. The pressure range of the hydrogen storage tank 4 is 5MPa-20MPa. The outlet pipeline of the hydrogen storage tank 4 is connected to the inlet of the high-pressure compressor 6, and in order to control the opening and closing of the inlet pipeline and the outlet pipeline of the hydrogen storage tank 4 when in use, a low-pressure tank inlet linkage valve 3 is also provided on the inlet pipeline of the hydrogen storage tank 4, and a high-pressure tank inlet linkage valve 5 is provided on the outlet pipeline of the hydrogen storage tank 4. During operation, the low-pressure tank inlet linkage valve 3 and the high-pressure tank inlet linkage valve 5 cannot be opened at the same time. When any one valve is opened, the others are closed.

[0051] Preferably, the hydrogen storage tank 4 is a pressure vessel with a pressure resistance of 20 MPa, and further, the low-pressure storage tank 4 is a 20 MPa long tube trailer.

[0052] The hydrogen derivative station-based hydrogen production and hydrogenation station further comprises:

[0053] A multi-stage storage tank consisting of a high-pressure multi-stage storage tank 7, a medium-pressure multi-stage storage tank 8 and a low-pressure multi-stage storage tank 9,

[0054] And a precooling system 10 connected to the multi-stage storage tank, the outlet of the high-pressure compressor 6 is respectively connected to the inlet pipeline of the high-pressure multi-stage storage tank 7, the inlet pipeline of the medium-pressure multi-stage storage tank 8 and the inlet pipeline of the low-pressure multi-stage storage tank 9 of the multi-stage storage tank, and the high-pressure multi-stage storage tank 7, the medium-pressure multi-stage storage tank 8 and the low-pressure multi-stage storage tank 9 are in parallel mode. When supplying gas to the multi-stage storage tanks, the high-pressure multi-stage storage tank 7 is replenished first. After the high-pressure multi-stage storage tank 7 is filled, the medium-pressure multi-stage storage tank 8 is replenished. After the medium-pressure multi-stage storage tank 8 is filled, the low-pressure multi-stage storage tank 9 is replenished. In order to control the gas supply to the multi-stage storage tanks, a high-pressure inlet control valve 701, a medium-pressure inlet control valve 801 and a low-pressure inlet control valve 901 are respectively provided at the inlet pipeline of the high-pressure multi-stage storage tank 7, the inlet pipeline of the medium-pressure multi-stage storage tank 8 and the inlet pipeline of the low-pressure multi-stage storage tank 9. The high-pressure inlet control valve 701, the medium-pressure inlet control valve 801 and the low-pressure inlet control valve 901 cooperate with the high-pressure compressor 6 to achieve the purpose of conveying hydrogen of the corresponding pressure range to the multi-stage storage tanks with different pressures.

[0055] The outlet pipeline of the high-pressure multistage storage tank 7, the outlet pipeline of the medium-pressure multistage storage tank 8 and the outlet pipeline of the low-pressure multistage storage tank 9 are respectively connected to the inlet of the precooling system 10. When filling and taking gas, the multistage storage tanks transport gas to the outside, and the low-pressure multistage storage tank 9 is preferentially used to transport gas to the outside. After the low-pressure multistage storage tank 9 has transported all the hydrogen in the tank, the medium-pressure multistage storage tank 8 will transport gas to the outside. After the medium-pressure multistage storage tank 8 has transported all the hydrogen in the tank, the high-pressure multistage storage tank 7 will transport gas to the outside. In order to control the multistage storage tanks to transport gas to the outside, a high-pressure outlet control valve 702, a medium-pressure outlet control valve 802 and a low-pressure outlet control valve 902 are respectively provided at the outlet pipeline of the high-pressure multistage storage tank 7, the outlet pipeline of the medium-pressure multistage storage tank 8 and the outlet pipeline of the low-pressure multistage storage tank 9.

[0056] A filling module 11, the inlet of the filling module 11 is connected to the outlet of the precooling system 10, and the filling module 11 is used to fill hydrogen into the fuel cell vehicle.

[0057] For further information, please refer to Figure 3 , the buffer boost system comprises:

[0058] A buffer tank 203, and a low-pressure compressor 205 connected to the buffer tank 203, the inlet of the buffer tank 203 is connected to the outlet of the hydrogen derivative hydrogen production end 1, the outlet of the buffer tank 203 is connected to the inlet of the low-pressure compressor 205, the outlet of the low-pressure compressor 205 is connected to the inlet of the hydrogen storage tank 4, and in order to detect the purity of the hydrogen entering the buffer tank 203 and control the input and output of the hydrogen in the buffer tank 203, a hydrogen purity detection device 201 and a buffer tank inlet linkage valve 202 are provided in the pipeline at the inlet end of the buffer tank 203, and a buffer tank outlet linkage valve 204 is provided in the pipeline at the outlet end of the buffer tank 203. During operation, the buffer tank inlet linkage valve 202 and the inlet linkage valve 204 cannot be opened at the same time. When any one valve is opened, the others are closed.

[0059] The buffer tank 203 is designed to have a use pressure of 2.0 MPa, and the pressure maintained in the tank ranges from 0.5 to 2.0 MPa. The inlet pressure of the low-pressure compressor 205 is 0.5 MPa to 2.0 MPa, and the exhaust pressure is 20 MPa.

[0060] See also Figure 4 The present invention also provides an operation method of a hydrogen derivative station-based hydrogen production and hydrogenation station, the operation method is implemented using the above-mentioned hydrogen derivative station-based hydrogen production and hydrogenation station, and the operation method comprises the following steps:

[0061] S1: Hydrogen fuel cell vehicles send their own location and the remaining hydrogen in the onboard storage tank to the hydrogen refueling station through the cloud service platform or the Internet of Things system, and choose to make an appointment for the estimated refueling time and refueling amount. Hydrogen fuel cell vehicles are interconnected with the key information of the hydrogen refueling station through the cloud service platform or the Internet of Things system. The key information of hydrogen fuel cell vehicles includes: the remaining hydrogen in the onboard storage tank, the vehicle location, the scheduled refueling time, the scheduled refueling amount, etc. The key information of the hydrogen refueling station includes: the remaining gaseous hydrogen in the station, the estimated refueling amount / refueling vehicle number in the next period, and the hydrogen production in the next period;

[0062] S2: The refueling reservation information of multiple vehicles forms the future refueling demand curve of the hydrogen refueling station. Hydrogen fuel cell vehicles can choose their own arrival time for refueling based on the remaining gaseous hydrogen in the hydrogen refueling station and the expected number of vehicles in the future, refueling at off-peak hours and reducing the waiting time for refueling;

[0063] S3: The future filling demand curve formed by the hydrogen filling station is combined with the remaining hydrogen in the buffer tank, low-pressure storage tank, and multi-stage high-pressure storage tank in the station, as well as the hydrogen production feedback production in the station based on the distance of the hydrogen fuel cell vehicle from the station, the remaining hydrogen in the on-board storage tank, and the expected hydrogen filling time and filling amount. The hydrogen production feedback production in the station means that the gaseous hydrogen in the station should be kept within a reasonable range, that is, 1. The gaseous hydrogen production in the next period of the station + the gaseous hydrogen that can be filled in the station ≥ the hydrogen reservation demand in the next period × random parameters; 2. The gaseous hydrogen production in the next period of the station + the gaseous hydrogen remaining in the station ≤ the hydrogen reservation demand in the next period × random parameters + the maximum gaseous hydrogen remaining in the station storage tank,

[0064] The gaseous hydrogen production in the next period should be at the maximum permissible production rate of the hydrogen derivative hydrogen production end under the premise of meeting conditions 1. and 2. If condition 1 cannot be met, the hydrogen derivative hydrogen production end should be adjusted to the maximum production rate of the hydrogen derivative hydrogen production end to ensure supply, and the estimated waiting time and possible idle time for subsequent refueling vehicles should be notified through the interconnected system.

[0065] Furthermore, the range of the randomness parameter is 1.1-1.3,

[0066] Furthermore, the time range of the next period is 0.5 hours to 2 hours; if the adjustment period is too short, the hydrogen production reactor will not be able to meet the regulation requirements due to a certain hysteresis; if the adjustment period is too long, it will affect the remaining gaseous hydrogen in the station. The feedback production of hydrogen production in the station can not only ensure the filling capacity, but also prevent the remaining gaseous hydrogen in the hydrogenation station from exceeding the design range of the storage tank in the station;

[0067] S4: The station control system controls the compressor and hydrogen storage tank valves to boost the pressure and store hydrogen;

[0068] S5: When the vehicle arrives at the station, the control system in the station controls the pre-cooling and filling modules to perform graded gas extraction and filling.

[0069] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0070] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydrogen derivative in-station hydrogenation station, characterized in that: The hydrogen production and hydrogenation station in the hydrogen derivative station comprises: A hydrogen derivative hydrogen production end (1), and a buffer pressure-boosting system (2) arranged at the outlet of the hydrogen derivative hydrogen production end (1), wherein the outlet of the hydrogen derivative hydrogen production end (1) is connected to the inlet of the buffer pressure-boosting system (2); The hydrogen derivative station-based hydrogen production and hydrogenation station further comprises: A hydrogen storage tank (4), and a high-pressure compressor (6) connected to the outlet pipeline of the hydrogen storage tank (4), The inlet of the hydrogen storage tank (4) is connected to the outlet of the buffer boosting system (2) through a pipeline, the outlet pipeline of the hydrogen storage tank (4) is connected to the inlet of the high-pressure compressor (6), the inlet pipeline of the hydrogen storage tank (4) is also provided with a low-pressure tank inlet linkage valve (3), and the outlet pipeline of the hydrogen storage tank (4) is provided with a high-pressure tank inlet linkage valve (5); A multi-stage storage tank (12) and a precooling system (10) connected to the multi-stage storage tank (12), wherein the outlet of the high-pressure compressor (6) is connected to the inlet end pipeline of the multi-stage storage tank (12), and the inlet of the precooling system is connected to the outlet of the multi-stage storage tank; A filling module (11), wherein the inlet of the filling module (11) is connected to the outlet of the precooling system (10).

2. The hydrogen derivative in-station hydrogenation station according to claim 1, characterized in that: The multi-stage storage tank (12) comprises: A high-pressure multistage storage tank (7), a medium-pressure multistage storage tank (8) and a low-pressure multistage storage tank (9), wherein the high-pressure multistage storage tank (7), the medium-pressure multistage storage tank (8) and the low-pressure multistage storage tank (9) are in parallel mode, and the inlet end pipeline of the high-pressure multistage storage tank (7), the inlet end pipeline of the medium-pressure multistage storage tank (8) and the inlet end pipeline of the low-pressure multistage storage tank (9) are respectively provided with a high-pressure inlet control valve (701), a medium-pressure inlet control valve (801) and a low-pressure inlet control valve (901), and are respectively connected to the outlet of the high-pressure compressor (6); The outlet pipeline of the high-pressure multi-stage storage tank (7), the outlet pipeline of the medium-pressure multi-stage storage tank (8) and the outlet pipeline of the low-pressure multi-stage storage tank (9) are respectively provided with a high-pressure outlet control valve (702), a medium-pressure outlet control valve (802) and a low-pressure outlet control valve (902), and are respectively connected to the inlet of the precooling system (10).

3. The hydrogen derivative in-station hydrogenation station according to claim 1, characterized in that: The low-pressure storage tank 4 is a 20MPa long tube trailer.

4. A method for operating a hydrogen production and hydrogenation station in a hydrogen derivative station, characterized in that: The operation method is implemented using the hydrogen derivative in-station hydrogenation station according to claims 1 to 3, and the operation method comprises the following steps: S1: The hydrogen fuel cell vehicle is connected to the key information of the hydrogen refueling station through the cloud service platform or the Internet of Things system. The hydrogen fuel cell vehicle sends its own location and the remaining hydrogen in the vehicle tank to the hydrogen refueling station through the cloud service platform or the Internet of Things system, and chooses to make an appointment for the estimated refueling time and refueling amount; S2: The refueling reservation information of multiple vehicles forms the future refueling demand curve of the hydrogen refueling station. Hydrogen fuel cell vehicles can choose their own arrival time for refueling based on the remaining gaseous hydrogen in the hydrogen refueling station and the expected number of vehicles in the future, refueling at off-peak hours and reducing the waiting time for refueling; S3: The future refueling demand curve formed by the hydrogen refueling station is combined with the remaining hydrogen in the buffer tank, low-pressure storage tank, and multi-stage high-pressure storage tank in the station, and the hydrogen production feedback production in the station based on the distance of the hydrogen fuel cell vehicle from the station, the remaining hydrogen in the on-board storage tank, the expected hydrogen refueling time and the refueling amount; S4: The station control system controls the compressor and hydrogen storage tank valves to boost the pressure and store hydrogen; S5: When the vehicle arrives at the station, the control system in the station controls the pre-cooling and filling modules to perform graded gas extraction and filling.

5. The method for operating a hydrogen production and refueling station in a hydrogen derivative station according to claim 4, characterized in that: The purpose of the in-station hydrogen production feedback production is to ensure:

1. The gaseous hydrogen production in the next period of time in the station + the gaseous hydrogen refueling volume in the station ≥ the hydrogen reservation demand in the next period of time × random parameter; 2. The gaseous hydrogen production in the next period of time in the station + the remaining gaseous hydrogen in the station ≤ the hydrogen reservation demand in the next period of time × random parameters + the maximum remaining gaseous hydrogen in the station storage tank.

6. The method for operating a hydrogen production and refueling station in a hydrogen derivative station according to claim 5, characterized in that: The gaseous hydrogen production in the next period should be at the maximum allowable production rate of the hydrogen derivative hydrogen production end under the premise of meeting conditions one and two. If condition one cannot be met, the hydrogen derivative hydrogen production end should be adjusted to the maximum production rate of the hydrogen derivative hydrogen production end to ensure supply, and notify subsequent refueling vehicles of the estimated waiting time and subsequent possible idle time for refueling through the interconnected system.

7. The method for operating a hydrogen production and refueling station in a hydrogen derivative station according to claim 5, characterized in that: The randomness parameter ranges from 1.1 to 1.

3.

8. The method for operating a hydrogen production and refueling station in a hydrogen derivative station according to claim 5, characterized in that: The time range of the next period is 0.5 hours to 2 hours.

9. The method for operating a hydrogen production and refueling station in a hydrogen derivative station according to claim 4, characterized in that: The key information of the hydrogen fuel cell vehicle includes: the remaining hydrogen in the on-board storage tank, the vehicle location, the scheduled refueling time, and the scheduled hydrogen refueling amount.

10. The method for operating a hydrogen production and refueling station in a hydrogen derivative station according to claim 4, characterized in that: The key information of the hydrogen refueling station includes: the remaining amount of gaseous hydrogen in the station, the expected refueling amount / refueling vehicle number in the next period, and the hydrogen production in the next period.

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