Electricity-hydrogen-carbon collaborative conveying, control and utilization system

Abstract

The utility model discloses an electricity-hydrogen-carbon collaborative conveying, control and utilization system, and belongs to the technical field of energy conveying. The system comprises a control system and a conveying pipeline, wherein the conveying pipeline comprises a first pipe body, a second pipe body and a third pipe body which are sequentially arranged from inside to outside; the first pipe body forms a first channel for conveying liquid hydrogen, a second channel is formed between the first pipe body and the second pipe body, the second channel is filled with liquid nitrogen, and a third channel for conveying liquid carbon dioxide is formed between the second pipe body and the third pipe body; a power cable is further arranged in the second channel and used for transmitting electric power. Cold energy in the conveying pipeline is distributed in a uniform gradient mode, multi-stage gradient utilization of the cold energy can be achieved, and the comprehensive energy utilization rate of the liquid hydrogen, liquid carbon dioxide and electric power collaborative conveying system is increased.

Description

Technical Field

[0001] This application belongs to the field of energy transmission technology, specifically relating to an electro-hydrogen-carbon synergistic transmission, control and utilization system. Background Technology

[0002] Existing coal-fired power units are evolving towards lower carbon emissions and greater flexibility. A technology chain that couples with coal-fired power units through off-peak electricity hydrogen production, fuel cell power generation, and gaseous / liquid hydrogen transportation can achieve diversified and flexible end-use energy. Furthermore, carbon capture technology can enrich and utilize high-concentration carbon dioxide in the combustion exhaust of coal-fired units. Liquid carbon dioxide transportation technology can be used for downstream applications such as carbon dioxide enhanced oil recovery and storage in the petrochemical industry, and as a refrigerant in the food industry. Pipelines that synergistically transport energy using liquid hydrogen, liquid carbon dioxide, and superconducting power cables hold promise as a new solution for the centralized transportation of diverse and heterogeneous energy sources, leveraging the multi-stage gradient utilization of liquid hydrogen cold energy.

[0003] In existing technologies, hydrogen-electricity co-transport pipelines often employ an internal superconducting cable and an external liquid hydrogen pipeline design. During power transmission, the heat from the internal superconducting cable is transferred to the liquid hydrogen pipeline, resulting in excessive evaporation and loss of liquid hydrogen, which reduces energy utilization. Furthermore, the temperature gradient between the inside and outside of the pipeline exhibits a characteristic of being low in the middle and high on both sides, failing to fully utilize the cascaded cold energy of liquid hydrogen, thus leading to low energy utilization. Utility Model Content

[0004] The purpose of this application is to provide an electro-hydrogen-carbon co-transport, control, and utilization system that can solve the problem of low capacity utilization of hydrogen-electric co-transport pipelines.

[0005] In a first aspect, embodiments of this application provide an electro-hydrogen-carbon co-transport, control, and utilization system, the system including a control system and a transport pipeline, the transport pipeline including a first pipe body, a second pipe body, and a third pipe body arranged sequentially from the inside to the outside;

[0006] The first tube forms a first channel for transporting liquid hydrogen, a second channel is formed between the first tube and the second tube, the second channel is filled with liquid nitrogen, and a third channel is formed between the second tube and the third tube for transporting liquid carbon dioxide.

[0007] The second channel is also equipped with power cables for transmitting power.

[0008] The control system is used to regulate the temperature and / or pressure of the first channel, the second channel, and the third channel.

[0009] Optionally, the wall of the first tube facing the first channel is coated with a hydrogen-barrier material to form a liquid hydrogen barrier coating.

[0010] Optionally, the power cable includes a superconducting cable, an insulation layer, and a protective layer. The protective layer is disposed outside the insulation layer, and the superconducting cable is disposed inside the insulation layer. The insulation layer is made of an insulating material, and the protective layer is used to isolate the superconducting cable from liquid nitrogen.

[0011] Optionally, there may be multiple power cables, which are evenly arranged within the second channel.

[0012] Optionally, the conveying pipe further includes a first reinforcing rib and a second reinforcing rib, one end of the first reinforcing rib being connected to the surface of the first pipe body facing the second channel, and the other end of the first reinforcing rib being connected to the surface of the second pipe body facing the second channel;

[0013] One end of the second reinforcing rib is connected to the surface of the second tube body facing the third channel, and the other end of the second reinforcing rib is connected to the surface of the third tube body facing the third channel.

[0014] Optionally, the control system includes a control center, a sensing device, and an adjustment device;

[0015] Both the sensing device and the regulating device are connected to the control center. The sensing device is disposed inside the conveying pipeline. The sensing device is used to detect the temperature and / or pressure in the first channel, the second channel, and the third channel, and send the temperature and pressure in the first channel, the second channel, and the third channel to the control center. The control center is used to control the regulating device to regulate the temperature and / or pressure in the first channel, the second channel, and the third channel based on the temperature and / or pressure in the first channel, the second channel, and the third channel.

[0016] Optionally, the sensing device includes a sensing channel, a first sensor, a second sensor, and a third sensor;

[0017] The sensing conduit passes sequentially through the first pipe body, the second pipe body, and the third pipe body. The first sensor is located in the area of ​​the sensing conduit within the first channel, the second sensor is located in the area of ​​the sensing conduit within the second channel, and the third sensor is located in the area of ​​the sensing conduit within the third channel.

[0018] The first sensor, the second sensor, and the third sensor are all electrically connected to the control center.

[0019] Optionally, the regulating device includes a first regulating pipe, a first valve, a second regulating pipe, a second valve, a third regulating pipe, and a third valve;

[0020] One end of the first regulating pipe is connected to a hydrogen source, and the other end of the first regulating pipe passes through the first pipe body, the second pipe body and the third pipe body and is connected to the first channel. The first valve is installed on the first regulating pipe and is electrically connected to the control center. The control center is used to control the opening and closing of the first valve to regulate the temperature and / or pressure in the first channel.

[0021] One end of the second regulating pipe is connected to a nitrogen source, and the other end of the second regulating pipe passes through the first pipe body and the second pipe body and is connected to the second channel. The second valve is installed on the second regulating pipe and is electrically connected to the control center. The control center is used to control the opening and closing of the second valve to regulate the temperature and pressure in the second channel.

[0022] One end of the third regulating pipe is connected to a carbon dioxide source, and the other end of the third regulating pipe passes through the first pipe body and is connected to the third channel. The third valve is installed on the third regulating pipe and is electrically connected to the control center. The control center is used to control the opening and closing of the third valve to regulate the temperature and pressure in the third channel.

[0023] Optionally, the number of the sensing channels is multiple, and the distance between any two adjacent sensing channels is less than or equal to a preset distance.

[0024] In this embodiment, the conveying pipeline has a multi-layer structure, consisting of a first channel, a second channel, and a third channel from the inside out, containing liquid hydrogen, liquid nitrogen, and liquid carbon dioxide, respectively. The boiling point of liquid hydrogen is -252.87℃, the boiling point of liquid nitrogen is -195.8℃, and the boiling point of liquid carbon dioxide is -78.5℃. Therefore, the cold energy in the conveying pipeline has a uniform gradient distribution, which can realize multi-level gradient utilization of cold energy and improve the comprehensive energy utilization rate of the liquid hydrogen, liquid carbon dioxide, and power co-transportation system. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the conveying pipeline provided in an embodiment of this application;

[0027] Figure 2 This is a schematic diagram of the control system provided in an embodiment of this application.

[0028] Figure label:

[0029] 1. Third tube body; 2. Third channel; 3. Second tube body; 4. Reinforcing rib; 5. Second channel; 7. Protective layer; 8. Insulation layer; 9. Superconducting cable; 10. First tube body; 11. First channel; 12. Control center; 13. Sensing device; 14. Regulating pipe; 15. Third valve; 21. Hydrogen source; 22. First valve; 23. Nitrogen source; 24. Second valve; 25. Carbon dioxide source. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0031] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0032] This application provides an embodiment of an electro-hydrogen-carbon co-transport, control, and utilization system, including a control system and a transport pipeline, such as... Figure 1 As shown, the conveying pipeline provided in this application embodiment includes a first pipe body 10, a second pipe body 3, and a third pipe body 1 arranged sequentially from the inside to the outside;

[0033] The first tube 10 forms a first channel 11 for transporting liquid hydrogen, a second channel 5 is formed between the first tube 10 and the second tube 3, the second channel 5 is filled with liquid nitrogen, and a third channel 2 for transporting liquid carbon dioxide is formed between the second tube 3 and the third tube 1.

[0034] The second channel 5 is also equipped with power cables, which are used to transmit power.

[0035] The control system is used to regulate the temperature and / or pressure of the first channel 11, the second channel 5, and the third channel 2.

[0036] In this application, the conveying pipeline has a multi-layer structure, consisting of a first channel 11, a second channel 5, and a third channel 2 from the inside out, which respectively contain liquid hydrogen, liquid nitrogen, and liquid carbon dioxide. The boiling point of liquid hydrogen is -252.87℃, the boiling point of liquid nitrogen is -195.8℃, and the boiling point of liquid carbon dioxide is -78.5℃. Therefore, the cold energy in the conveying pipeline has a uniform gradient distribution, which can realize multi-level gradient utilization of cold energy and improve the comprehensive energy utilization rate of the liquid hydrogen, liquid carbon dioxide, and power co-transport system. It can be used in scenarios such as carbon capture and carbon dioxide transportation of coal-fired unit combustion tail gas, hydrogen production coupled with hydrogen and electricity co-transportation from renewable energy sources, and co-transportation of by-product hydrogen and carbon dioxide from the chemical industry, which can generate significant economic benefits.

[0037] In addition, the power cables are fully surrounded by a liquid nitrogen cooling layer, enabling them to operate in a low-temperature environment for superconducting power transmission, minimizing heat conduction and effectively extending their service life.

[0038] In addition, the control system is used to regulate the temperature and / or pressure of the first channel 11, the second channel 5, and the third channel 2, so that the parameters of each channel are within a safe range during operation, thereby further improving the service life of pipes and cables.

[0039] Optionally, the wall of the first tube 10 facing the first channel 11 is coated with a hydrogen barrier material to form a liquid hydrogen barrier coating. In this embodiment, the hydrogen barrier material can be a bio-based polymer composite material doped with a positive and negative hydrogen conversion catalyst. Coating the inner wall surface of the first tube 10 with a dense liquid hydrogen barrier coating can reduce the risk of hydrogen embrittlement in the pipeline and increase the proportion of positive hydrogen in the liquid hydrogen transportation process.

[0040] Optionally, the power cable includes a superconducting cable 9, an insulation layer 8, and a protective layer 7. The protective layer 7 is disposed outside the insulation layer 8, and the superconducting cable 9 is disposed inside the insulation layer 8. The insulation layer 8 is made of insulating material, and the protective layer 7 is used to isolate the superconducting cable 9 from liquid nitrogen.

[0041] The protective layer 7 is used to isolate the superconducting cable 9 from the liquid nitrogen and to ensure sufficient heat conduction. The insulation layer 8 is made of polypropylene composite paper, polyimide, polyaramid, and other materials. The superconducting cable 9 uses yttrium barium copper oxide material and adopts a coaxial structure design for the positive and negative poles, making the cable structure more compact and eliminating external electromagnetic interference.

[0042] Optionally, there are multiple power cables, which are evenly arranged within the second channel 5.

[0043] exist Figure 1 In the embodiment shown, four power cables are provided. The voltage level and transmission current of the four power cables are independent of each other, and the voltage and current can be flexibly adjusted according to the power transmission scale.

[0044] Optionally, the conveying pipeline also includes a first reinforcing rib 4 and a second reinforcing rib 4, one end of the first reinforcing rib 4 being connected to the surface of the first pipe body 10 facing the second channel 5, and the other end of the first reinforcing rib 4 being connected to the surface of the second pipe body 3 facing the second channel 5.

[0045] One end of the second reinforcing rib 4 is connected to the surface of the second tube 3 facing the third channel 2, and the other end of the second reinforcing rib 4 is connected to the surface of the third tube 1 facing the third channel 2.

[0046] In this embodiment, the reinforcement 4 can enhance the structural stability of different pipe flow layers.

[0047] like Figure 2 As shown, the control system includes a control center 12, a sensing device 13, and an adjustment device.

[0048] Both the sensing device 13 and the regulating device are connected to the control center 12. The sensing device 13 is installed inside the conveying pipeline. The sensing device 13 is used to detect the temperature and / or pressure in the first channel 11, the second channel 5, and the third channel 2, and send the temperature and pressure in the first channel 11, the second channel 5, and the third channel 2 to the control center 12. The control center 12 is used to control the regulating device to regulate the temperature and / or pressure in the first channel 11, the second channel 5, and the third channel 2 based on the temperature and / or pressure in the first channel 11, the second channel 5, and the third channel 2.

[0049] The sensing device 13 can be used to measure the temperature and pressure of each channel, and the regulating device can be used to regulate the temperature and pressure of each channel, which can prevent the temperature and pressure in the channel from exceeding the safety limit and improve the transportation safety of the pipeline.

[0050] Optionally, the sensing device 13 includes a sensing channel, a first sensor, a second sensor, and a third sensor;

[0051] The sensing conduit passes through the first tube 10, the second tube 3 and the third tube 1 in sequence. The first sensor is set in the area of ​​the sensing conduit located in the first channel 11, the second sensor is set in the area of ​​the sensing conduit located in the second channel 5, and the third sensor is set in the area of ​​the sensing conduit located in the third channel 2.

[0052] The first, second, and third sensors are all electrically connected to the control center 12.

[0053] Please see further. Figure 2The sensing device 13 includes a sensing pipe that is inserted into the conveying pipe through an opening, enabling the first, second, and third sensors to detect the temperature and pressure of the first channel 11, the second channel 5, and the third channel 2, respectively. The device has a simple structure and is easy to manufacture. Accurate detection of the temperature and pressure of each pipe allows for precise adjustment of these parameters, thereby improving the safety of pipeline transport.

[0054] Optionally, the regulating device includes a first regulating pipe, a first valve 22, a second regulating pipe, a second valve 24, a third regulating pipe, and a third valve 15;

[0055] One end of the first regulating pipe is connected to the hydrogen source 21, and the other end of the first regulating pipe passes through the first pipe body 10, the second pipe body 3 and the third pipe body 1 and is connected to the first channel 11. The first valve 22 is installed on the first regulating pipe and is electrically connected to the control center 12. The control center 12 is used to control the opening and closing of the first valve 22 to regulate the temperature and / or pressure in the first channel 11.

[0056] One end of the second regulating pipe is connected to the nitrogen source 23, and the other end of the second regulating pipe passes through the first pipe body 10 and the second pipe body 3 and is connected to the second channel 5. The second valve 24 is installed on the second regulating pipe and is electrically connected to the control center 12. The control center 12 is used to control the opening and closing of the second valve 24 to regulate the temperature and pressure in the second channel 5.

[0057] One end of the third regulating pipe is connected to the carbon dioxide source, and the other end of the third regulating pipe passes through the first pipe body 10 and is connected to the third channel 2. The third valve 15 is installed on the third regulating pipe and is electrically connected to the control center 12. The control center 12 is used to control the opening and closing of the third valve 15 to regulate the temperature and pressure in the third channel 2.

[0058] Please see further. Figure 2 The regulating device includes regulating pipes, which include: a first regulating pipe connected to the first channel 11, a second regulating pipe connected to the second channel 5, and a third regulating pipe connected to the third channel 2. The first regulating pipe is connected to a hydrogen recovery station, the second regulating pipe is connected to a nitrogen recovery station, and the third regulating pipe is connected to a carbon dioxide recovery station.

[0059] When the pressure exceeds the set pressure threshold, the intelligent control center 12 controls the opening of the corresponding first valve 22, second valve 24, or third valve 15, respectively, to allow liquid hydrogen, liquid nitrogen, or liquid carbon dioxide to be added to the hydrogen recovery station, nitrogen recovery station, or carbon dioxide recovery station until the pressure does not exceed the set pressure threshold. When the temperature of the liquid hydrogen, liquid nitrogen, or liquid carbon dioxide exceeds the corresponding set temperature threshold, the intelligent control center 12 controls the activation of the corresponding compressor and heat exchanger to lower the temperature of the liquid hydrogen, liquid nitrogen, or liquid carbon dioxide until the temperature does not exceed the corresponding set temperature threshold. This method improves the safety of pipeline transportation.

[0060] Optionally, there may be multiple sensing channels, and the distance between any two adjacent sensing channels may be less than or equal to a preset distance.

[0061] In this embodiment, the preset distance can be 100 meters. A sensing pipe is set at each preset distance to monitor the temperature and pressure of each channel in the conveying pipeline in real time and make corresponding adjustments to improve the safety of pipeline transportation.

[0062] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0063] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A system for the coordinated transport, control, and utilization of hydrogen and carbon, characterized in that, The system includes a control system and a conveying pipeline, wherein the conveying pipeline includes a first pipe body, a second pipe body, and a third pipe body arranged sequentially from the inside to the outside; The first tube forms a first channel for transporting liquid hydrogen, a second channel is formed between the first tube and the second tube, the second channel is filled with liquid nitrogen, and a third channel is formed between the second tube and the third tube for transporting liquid carbon dioxide. The second channel is also equipped with power cables for transmitting power. The control system is used to regulate the temperature and / or pressure of the first channel, the second channel, and the third channel.

2. The electro-hydrogen-carbon synergistic transport, control, and utilization system as described in claim 1, characterized in that, The first tube body is coated with a hydrogen barrier material on the wall facing the first channel to form a liquid hydrogen barrier coating.

3. The electro-hydrogen-carbon synergistic transport, control, and utilization system as described in claim 1, characterized in that, The power cable includes a superconducting cable, an insulation layer, and a protective layer. The protective layer is disposed outside the insulation layer, and the superconducting cable is disposed inside the insulation layer. The insulation layer is made of insulating material, and the protective layer is used to isolate the superconducting cable from liquid nitrogen.

4. The electro-hydrogen-carbon synergistic transport, control, and utilization system as described in claim 3, characterized in that, The number of power cables is multiple, and the multiple power cables are evenly arranged in the second channel.

5. The electro-hydrogen-carbon co-transport, control, and utilization system as described in any one of claims 1 to 3, characterized in that, The conveying pipeline further includes a first reinforcing rib and a second reinforcing rib, one end of the first reinforcing rib being connected to the surface of the first pipe body facing the second channel, and the other end of the first reinforcing rib being connected to the surface of the second pipe body facing the second channel. One end of the second reinforcing rib is connected to the surface of the second tube body facing the third channel, and the other end of the second reinforcing rib is connected to the surface of the third tube body facing the third channel.

6. The electro-hydrogen-carbon synergistic transport, control, and utilization system as described in claim 5, characterized in that, The control system includes a control center, sensing devices, and adjustment devices; Both the sensing device and the regulating device are connected to the control center. The sensing device is installed inside the conveying pipeline. The sensing device is used to detect the temperature and / or pressure in the first channel, the second channel, and the third channel, and to send the temperature and pressure in the first channel, the second channel, and the third channel to the control center. The control center is used to control the regulating device to adjust the temperature and / or pressure of the first channel, the second channel, and the third channel based on the temperature and / or pressure within the first channel, the second channel, and the third channel.

7. The electro-hydrogen-carbon synergistic transport, control, and utilization system as described in claim 6, characterized in that, The sensing device includes a sensing pipe, a first sensor, a second sensor, and a third sensor; The sensing conduit passes sequentially through the first pipe body, the second pipe body, and the third pipe body. The first sensor is located in the area of ​​the sensing conduit within the first channel, the second sensor is located in the area of ​​the sensing conduit within the second channel, and the third sensor is located in the area of ​​the sensing conduit within the third channel. The first sensor, the second sensor, and the third sensor are all electrically connected to the control center.

8. The electro-hydrogen-carbon synergistic transport, control, and utilization system as described in claim 6, characterized in that, The regulating device includes a first regulating pipe, a first valve, a second regulating pipe, a second valve, a third regulating pipe, and a third valve; One end of the first regulating pipe is connected to a hydrogen source, and the other end of the first regulating pipe passes through the first pipe body, the second pipe body and the third pipe body and is connected to the first channel. The first valve is installed on the first regulating pipe and is electrically connected to the control center. The control center is used to control the opening and closing of the first valve to regulate the temperature and / or pressure in the first channel. One end of the second regulating pipe is connected to a nitrogen source, and the other end of the second regulating pipe passes through the first pipe body and the second pipe body and is connected to the second channel. The second valve is installed on the second regulating pipe and is electrically connected to the control center. The control center is used to control the opening and closing of the second valve to regulate the temperature and pressure in the second channel. One end of the third regulating pipe is connected to a carbon dioxide source, and the other end of the third regulating pipe passes through the first pipe body and is connected to the third channel. The third valve is installed on the third regulating pipe and is electrically connected to the control center. The control center is used to control the opening and closing of the third valve to regulate the temperature and pressure in the third channel.

9. The electro-hydrogen-carbon synergistic transport, control, and utilization system as described in claim 7, characterized in that, The number of the sensing channels is multiple, and the distance between any two adjacent sensing channels is less than or equal to a preset distance.

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