A multi-hydrogen source intelligent hydrogen supply system

Abstract

The application provides a multi-hydrogen-source intelligent hydrogen supply system, which comprises at least two hydrogen production lines with different hydrogen production methods, a hydrogen buffer tank provided with a first pipeline and a second pipeline, and a control unit; the first pipeline is in communication with a user end; the second pipeline is in communication with each hydrogen production line; a first flow regulating valve is arranged on the first pipeline; a straight-through pipeline in communication with the user end is arranged on each hydrogen production line; a second flow regulating valve is arranged on the straight-through pipeline; the first flow regulating valve and the second flow regulating valve are electrically connected with the control unit; an input end for receiving the demand of the user end is arranged on the control unit; the control unit adjusts the opening degree of the first flow regulating valve and the second flow regulating valve according to the data received by the input end; when the user end pays more attention to the hydrogen sales price, more low-cost hydrogen sources can be supplied, and less or no high-cost hydrogen sources are supplied for matching; when the user end pays more attention to environmental protection and carbon reduction, more low-carbon hydrogen sources can be supplied, and less or no high-carbon hydrogen sources are supplied for matching.

Description

Technical Field

[0001] This invention belongs to the field of building structure energy dissipation and vibration reduction technology, specifically relating to a multi-hydrogen source intelligent hydrogen supply system. Background Technology

[0002] Hydrogen is mainly used in industrial fields such as chemical synthesis, electronic manufacturing, metallurgical reduction, and fuel cells. It is an important industrial gas. Hydrogen production methods include water electrolysis, methanol production, water-gas process, petroleum thermal cracking, and coke oven gas refrigeration. Each hydrogen production method has a different effect on carbon reduction. Hydrogen production companies need to build multiple hydrogen production lines to achieve multi-source hydrogen supply to meet environmental protection requirements. The produced hydrogen is first sent to a hydrogen buffer tank and then delivered to the user end. Due to the different methods of hydrogen source, the cost varies greatly. Low-cost hydrogen sources often correspond to higher carbon emissions, while low-carbon hydrogen sources mean high costs. It is impossible to flexibly adjust the proportion of low-cost or low-carbon hydrogen sources according to the current needs of the user end, resulting in low user satisfaction. At the same time, a single hydrogen production company needs to serve multiple users. Each user has different requirements for hydrogen pressure and flow rate under different scenarios and operating conditions. Adjusting the pressure and flow rate at the output of the hydrogen buffer tank cannot meet them simultaneously. In actual use, users with large differences in pressure and flow rate can only adopt a rotating hydrogen supply method, resulting in poor hydrogen supply continuity and low satisfaction. Summary of the Invention

[0003] The purpose of this invention is to overcome one or more shortcomings in the prior art and provide a multi-hydrogen source intelligent hydrogen supply system.

[0004] To achieve the above objectives, the technical solution adopted by this invention is a multi-hydrogen source intelligent hydrogen supply system, comprising: At least two hydrogen production lines using different hydrogen production methods; A hydrogen buffer tank is provided with a first pipeline and a second pipeline. The first pipeline is connected to the user end, and the second pipeline is connected to each of the hydrogen production lines. Control unit; The first pipeline is equipped with a first flow regulating valve, and each of the hydrogen production lines is equipped with a straight pipeline connected to the user terminal. The straight pipeline is equipped with a second flow regulating valve. The first flow regulating valve and the second flow regulating valve are both electrically connected to the control unit. The control unit is equipped with an input terminal for receiving user terminal requirements. The control unit adjusts the opening degree of the first flow regulating valve and the second flow regulating valve according to the data received by the input terminal.

[0005] Preferably, a first flow meter is provided on the first pipe, and a second flow meter is provided on the straight pipe. The first flow meter and the second flow meter are signal-connected to the control unit to provide feedback on actual flow data.

[0006] Preferably, the second pipeline is provided with a first pressure reducing valve to make the hydrogen pressure in the hydrogen buffer tank lower than the minimum requirement of the user end, and the straight pipeline is provided with a second pressure reducing valve to adjust the hydrogen pressure at the user end.

[0007] More preferably, there are multiple user terminals.

[0008] More preferably, the second pressure reducing valve and the second flow regulating valve are arranged sequentially along the hydrogen flow direction.

[0009] More preferably, the hydrogen buffer tank is equipped with a first pressure gauge, which is signal-connected to the control unit.

[0010] Preferably, the hydrogen production line includes a hydrogen production unit, a post-processing unit, and a storage tank connected in sequence.

[0011] More preferably, the hydrogen production units of these two hydrogen production lines are an electrolysis water hydrogen production unit and a methanol hydrogen production unit, respectively.

[0012] More preferably, the storage tank is connected to the second pipe and the straight pipe.

[0013] More preferably, the storage tank is provided with a second pressure gauge that is signal-connected to the control unit.

[0014] More preferably, any of the hydrogen production lines has at least two storage tanks that are interconnected.

[0015] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: The multi-hydrogen source intelligent hydrogen supply system provided by this invention includes at least two hydrogen production lines with different hydrogen production methods, a hydrogen buffer tank equipped with a first pipeline and a second pipeline, and a control unit. The first pipeline is connected to the user end, and the second pipeline is connected to each hydrogen production line. By setting a first flow regulating valve on the first pipeline, and setting a straight pipeline connected to the user end on each hydrogen production line, and setting a second flow regulating valve on the straight pipeline, both the first and second flow regulating valves are electrically connected to the control unit. The control unit is equipped with an input terminal to receive user demand, so that the control unit adjusts the opening degree of the first and second flow regulating valves according to the data received from the input terminal. When the user end is more concerned about the price of hydrogen, more low-cost hydrogen sources can be supplied, and less or no high-cost hydrogen sources can be supplied. When the user end is more concerned about environmental protection and carbon reduction, more low-carbon hydrogen sources can be supplied, and less or no high-carbon hydrogen sources can be supplied, thereby improving user satisfaction. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a preferred embodiment of the present invention.

[0017] The components are as follows: 10a. Electrolysis of water to produce hydrogen; 10b. Methanol to produce hydrogen; 11. Hydrogen production unit; 12. Post-processing unit; 13. Storage tank; 131. Second pressure gauge; 14. Straight-through pipeline; 141. Second flow regulating valve; 142. Second flow meter; 143. Second pressure reducing regulating valve; 15. Main pipeline; 20. Hydrogen buffer tank; 21. First pipeline; 211. First flow regulating valve; 212. First flow meter; 22. Second pipeline; 221. First pressure reducing regulating valve; 23. First pressure gauge; 30. Control unit; 41. First user terminal; 42. Second user terminal; 43. Third user terminal. Detailed Implementation

[0018] Example 1, as Figure 1As shown, the multi-hydrogen source intelligent hydrogen supply system provided by the present invention includes: two hydrogen production lines with different hydrogen production methods, a hydrogen buffer tank 20 equipped with a first pipeline 21 and a second pipeline 22, and a control unit 30; wherein, the hydrogen production line includes a hydrogen production unit 11, a post-processing unit 12 and a storage tank 13 connected in sequence, the two hydrogen production lines being an electrolysis water hydrogen production line 10a and a methanol hydrogen production line 10b, respectively. The hydrogen production unit 11 of the electrolysis water hydrogen production line 10a is an electrolysis water hydrogen production unit, which has the characteristics of high power consumption and no carbon emissions, and produces hydrogen... The cost is relatively high and fluctuates with electricity prices. The hydrogen production pressure is approximately 5 to 35 kg. The hydrogen production unit 11 of the methanol-to-hydrogen production line 10b is a methanol-to-hydrogen unit, which has the characteristics of wide raw material sources, relatively low power consumption, and high carbon emissions. The hydrogen production cost is relatively low, and the hydrogen production pressure is approximately 10 to 15 kg. The first pipeline 21 is connected to the user end and is equipped with a first flow regulating valve 211 and a first flow meter 212. There are two second pipelines 22, which are respectively connected to the storage tanks 13 of the water electrolysis hydrogen production line 10a and the methanol-to-hydrogen production line 10b. Both the storage tanks 13 of the hydrogen production line 10a and the methanol-to-hydrogen production line 10b are equipped with straight-through pipes 14 connecting to the user end. Each straight-through pipe 14 is equipped with a second flow regulating valve 141 and a second flow meter 142. The first flow regulating valve 141 and the second flow regulating valve 141 are electrically connected to the control unit 30, and the first flow meter 212 and the second flow meter 142 are also signal-connected to the control unit 30 to provide feedback on actual flow data. The control unit 30 is equipped with a digital input terminal for receiving user end requests. Based on the data received from the input terminal, the opening degrees of the first flow regulating valve 211 and the second flow regulating valve 141 are adjusted. When users are more concerned about the price of hydrogen, more low-cost hydrogen source from the methanol-to-hydrogen production line 10b can be supplied, while less or no high-cost hydrogen source from the water electrolysis-to-hydrogen production line 10a can be supplied. When users are more concerned about environmental protection and carbon reduction, more low-carbon hydrogen source from the water electrolysis-to-hydrogen production line 10a can be supplied, while less or no high-carbon hydrogen source from the methanol-to-hydrogen production line 10b can be supplied, thereby improving user satisfaction.

[0019] In this embodiment, there are three user terminals: a first user terminal 41, a second user terminal 42, and a third user terminal 43, to cover scenarios such as fixed heating (environmentally friendly), metal smelting (cost-intensive), and hydrogen refueling stations (balancing environmental protection and cost). The first pipe 11 on the hydrogen buffer tank 20 has three lines, connected to the first user terminal 41, the second user terminal 42, and the third user terminal 43 respectively. Similarly, the direct pipes 14 of the storage tanks 13 of the corresponding water electrolysis hydrogen production line 10a and methanol hydrogen production line 10b each have three lines, connected to the first user terminal 41, the second user terminal 42, and the third user terminal 43 respectively, and corresponding to the same storage tank 10b. The three straight pipes 14 of the 3 are connected to the storage tank 13 through the same main pipe 15, which can be equipped with valves. In order to meet the different hydrogen pressure requirements of the three user ends, the second pipe 22 is further equipped with a first pressure reducing regulating valve 221 to make the hydrogen pressure entering the hydrogen buffer tank 20 lower than the minimum requirement of each user end. At the same time, each straight pipe 14 is equipped with a second pressure reducing regulating valve 143 to adjust the hydrogen pressure of each user end individually. For ease of installation, the second pressure reducing regulating valve 143, the second flow meter 142, and the second flow regulating valve 141 on the straight pipe 14 are arranged sequentially along the hydrogen flow direction.

[0020] For ease of operation, in this embodiment, both the first pressure reducing regulating valve 221 and the second pressure reducing regulating valve 143 are electrically connected to the control unit 30. The control unit 30 can remotely control the opening degree of the first pressure reducing regulating valve 221 and the second pressure reducing regulating valve 143. To achieve feedback, the hydrogen buffer tank 20 is further equipped with a first pressure gauge 23, and the storage tank 13 is equipped with a second pressure gauge 131. Both the first pressure gauge 23 and the second pressure gauge 131 are signal connected to the control unit 30 to achieve real-time pressure feedback.

[0021] In this embodiment, each hydrogen production unit 11 is also electrically connected to the control system 30. The control system 30 flexibly controls the production capacity of each hydrogen production unit 11 based on the user's current total demand for hydrogen and taking into account the cost of raw materials and power sources required for hydrogen production, so as to maximize the efficiency of the multi-hydrogen source intelligent hydrogen supply system.

[0022] It should be noted that both the water electrolysis hydrogen production line 10a and the methanol hydrogen production line 10b have two storage tanks 13, which are interconnected. One tank is used for receiving hydrogen and the other for supplying it, and they can be switched according to actual conditions. At the same time, this multi-hydrogen source intelligent hydrogen supply system can also be set up with three or even more hydrogen production lines to expand the range of hydrogen supply pressure and flow rate, providing more combination options while taking into account cost and carbon reduction, thereby improving the stability of hydrogen supply and the efficiency of hydrogen production enterprises.

[0023] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A multi-hydrogen source intelligent hydrogen supply system, comprising: At least two hydrogen production lines using different hydrogen production methods; A hydrogen buffer tank is provided with a first pipeline and a second pipeline. The first pipeline is connected to the user end, and the second pipeline is connected to each of the hydrogen production lines. Control unit; Its features are: The first pipeline is equipped with a first flow regulating valve, and each of the hydrogen production lines is equipped with a straight pipeline connected to the user terminal. The straight pipeline is equipped with a second flow regulating valve. The first flow regulating valve and the second flow regulating valve are both electrically connected to the control unit. The control unit is equipped with an input terminal for receiving user terminal requirements. The control unit adjusts the opening degree of the first flow regulating valve and the second flow regulating valve according to the data received by the input terminal.

2. The multi-hydrogen source intelligent hydrogen supply system according to claim 1, characterized in that: A first flow meter is installed on the first pipe, and a second flow meter is installed on the straight pipe. The first flow meter and the second flow meter are signal-connected to the control unit to provide feedback on actual flow data.

3. The multi-hydrogen source intelligent hydrogen supply system according to claim 1, characterized in that: The second pipeline is equipped with a first pressure reducing valve to ensure that the hydrogen pressure in the hydrogen buffer tank is lower than the minimum requirement of the user end. The straight pipeline is equipped with a second pressure reducing valve to adjust the hydrogen pressure at the user end.

4. The multi-hydrogen source intelligent hydrogen supply system according to claim 3, characterized in that: There are multiple client terminals.

5. The multi-hydrogen source intelligent hydrogen supply system according to claim 3, characterized in that: The second pressure reducing valve and the second flow regulating valve are arranged sequentially along the hydrogen flow direction.

6. The multi-hydrogen source intelligent hydrogen supply system according to claim 3, characterized in that: The hydrogen buffer tank is equipped with a first pressure gauge, which is connected to the control unit via a signal.

7. The multi-hydrogen source intelligent hydrogen supply system according to claim 1, characterized in that: The hydrogen production line includes a hydrogen production unit, a post-processing unit, and a storage tank connected in sequence.

8. The multi-hydrogen source intelligent hydrogen supply system according to claim 7, characterized in that: The hydrogen production units of these two hydrogen production lines are a water electrolysis hydrogen production unit and a methanol hydrogen production unit, respectively.

9. The multi-hydrogen source intelligent hydrogen supply system according to claim 7, characterized in that: The storage tank is connected to the second pipeline and the straight-through pipeline.

10. The multi-hydrogen source intelligent hydrogen supply system according to claim 9, characterized in that: The storage tank is equipped with a second pressure gauge that is signal-connected to the control unit.

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