Hydrogen storage system

Abstract

The utility model relates to the technical field of hydrogen storage, in particular to a hydrogen storage system which comprises a hydrogen storage tank, a heat conduction oil circulation pipeline, an electric heating heat conduction oil furnace and a fuel gas heating heat conduction oil furnace. Wherein a heat-conducting oil cavity, a heat-conducting oil outlet and a heat-conducting oil inlet are formed in the hydrogen storage tank, the heat-conducting oil outlet is communicated with the heat-conducting oil inlet through a heat-conducting oil circulating pipeline, the heat-conducting oil circulating pipeline passes through the electric heating heat-conducting oil furnace and the gas heating heat-conducting oil furnace, and the electric heating heat-conducting oil furnace and the gas heating heat-conducting oil furnace are used for heating heat-conducting oil; a hydrogen storage material cavity separated from the heat conduction oil cavity and a hydrogen outlet communicated with the hydrogen storage material cavity are formed in the hydrogen storage tank, and the hydrogen outlet is communicated with the combustion cavity of the fuel gas heating heat conduction oil furnace. Therefore, in the hydrogen storage system provided by the invention, the hydrogen carried by the hydrogen storage system is used for the dehydrogenation endothermic reaction, on one hand, the energy demand and the equipment investment of the hydrogen desorption end can be greatly reduced, and on the other hand, pure hydrogen is used as the energy, so that the carbon emission can be remarkably reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the hydrogen storage field, in particular to a hydrogen storage system. BACKGROUND

[0002] At present, the magnesium-based hydrogen storage technology is a hydrogen storage technology with high hydrogen storage capacity, low price and good safety. The hydrogen charging and discharging process of the hydrogen storage material is accompanied by obvious heat effect. The hydrogen discharging process needs to be carried out at a temperature above 300 DEG C, and the magnesium-based hydrogen storage material needs to be continuously provided with heat, so that continuous hydrogen discharging can be carried out. The dehydrogenation enthalpy of pure magnesium hydride is about 74.6 kJ / mol H2, and the equivalent heat of 10 kWh of electric energy needs to be provided for every 1 kg of hydrogen gas discharged. When the hydrogen storage scale is large, the power and heat required for hydrogen discharging are very high. According to the calculation of 100 kg of hydrogen discharging per hour, the electric power required for hydrogen discharging will exceed 1 MW. The conventional heating methods include electric heating and natural gas heating. The electric heating method is limited by the power supply configuration of the hydrogen station site, and when the hydrogen discharging place is far away from the power transformation station, expensive cables need to be laid. The coverage of the natural gas pipe network is limited, and not all places can use natural gas to provide heat source for the magnesium alloy system to discharge hydrogen. It can be seen that these factors limit the large-scale application of the magnesium-based solid-state hydrogen storage technology. CONTENT OF THE UTILITY MODEL

[0003] The purpose of the present application is to provide a hydrogen storage system, which solves the technical problem that the magnesium-based hydrogen storage system in the prior art is limited by electric heating or natural gas heating of the heat conducting oil, resulting in that the magnesium-based solid-state hydrogen storage technology cannot be applied on a large scale.

[0004] The present application provides a hydrogen storage system, comprising: a hydrogen storage tank, a heat conducting oil circulation pipeline, an electric heat conducting oil furnace and a gas heat conducting oil furnace; wherein the hydrogen storage tank is formed with a heat conducting oil cavity and a heat conducting oil outlet and a heat conducting oil inlet respectively communicating with the heat conducting oil cavity, and the heat conducting oil outlet and the heat conducting oil inlet are communicated through the heat conducting oil circulation pipeline, and the heat conducting oil circulation pipeline passes through the electric heat conducting oil furnace and the gas heat conducting oil furnace, and the electric heat conducting oil furnace and the gas heat conducting oil furnace are used for heating the heat conducting oil in the heat conducting oil circulation pipeline;

[0005] The hydrogen storage tank is formed with a hydrogen storage material cavity separated from the heat conducting oil cavity and a hydrogen outlet communicating with the hydrogen storage material cavity, and the hydrogen outlet is communicated with the combustion cavity of the gas heat conducting oil furnace, and hydrogen is introduced into the combustion cavity to heat the heat conducting oil by hydrogen combustion.

[0006] In the above technical solution, further, the hydrogen storage system further comprises a total hydrogen output pipeline, a flow divider, a first hydrogen sub-output pipeline and a second hydrogen sub-output pipeline; wherein the inlet end of the total hydrogen output pipeline is in communication with the hydrogen outlet, the outlet end of the total hydrogen output pipeline is in communication with the inlet end of the first hydrogen sub-output pipeline and the inlet end of the second hydrogen sub-output pipeline through the flow divider; and the outlet end of the first hydrogen sub-output pipeline is in communication with the combustion cavity of the gas heated heat conducting oil furnace.

[0007] In any of the above technical solutions, further, the hydrogen storage system further comprises a total valve, and the total valve is arranged on the total hydrogen output pipeline.

[0008] In any of the above technical solutions, further, the hydrogen storage system further comprises a hydrogen release valve group cabinet, and the second hydrogen sub-output pipeline passes through the hydrogen release valve group cabinet.

[0009] In any of the above technical solutions, further, the hydrogen storage system further comprises a cooler, and the second hydrogen sub-output pipeline passes through the cooler, and along the hydrogen conveying direction, the cooler is arranged between the hydrogen release valve group cabinet and the flow divider.

[0010] In any of the above technical solutions, further, the hydrogen storage system further comprises a circulating pump, and the heat conducting oil circulating pipeline passes through the circulating pump.

[0011] In any of the above technical solutions, further, along the heat conducting oil conveying direction, the electric heated heat conducting oil furnace and the gas heated heat conducting oil furnace are both arranged between the hydrogen storage tank and the circulating pump.

[0012] In any of the above technical solutions, further, the hydrogen storage system further comprises a first valve, and the first valve is arranged on the pipeline of the heat conducting oil circulating pipeline close to the heat conducting oil outlet of the hydrogen storage tank.

[0013] In any of the above technical solutions, further, the hydrogen storage system further comprises a second valve, and the second valve is arranged on the pipeline of the heat conducting oil circulating pipeline close to the heat conducting oil inlet of the hydrogen storage tank.

[0014] In any of the above technical solutions, further, along the heat conducting oil flow direction, the electric heated heat conducting oil furnace is arranged close to the hydrogen storage tank relative to the gas heated heat conducting oil furnace.

[0015] In any of the above technical solutions, further, in the initial state, one part of the hydrogen storage material cavity of the hydrogen storage tank is provided with hydrogen storage material, and the other part is provided with hydrogen; or in the initial state, the hydrogen storage material cavity of the hydrogen storage tank is only provided with hydrogen storage material.

[0016] In any of the above technical solutions, further, the hydrogen storage material stored in the hydrogen storage material cavity of the hydrogen storage tank is a magnesium-based solid hydrogen storage material.

[0017] Compared with the prior art, the application has the following beneficial effects:

[0018] In the hydrogen storage system provided by the application, the hydrogen gas carried by the hydrogen storage system itself is used for the dehydrogenation endothermic reaction, which can greatly reduce the energy demand and equipment investment of the hydrogen release end, and using pure hydrogen as energy can significantly reduce carbon emissions. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the specific embodiments or the prior art, the drawings needed in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0020] Figure 1 The schematic diagram of the hydrogen storage system provided by the embodiments of the application.

[0021] Reference signs:

[0022] 1-hydrogen storage tank, 2-heat conducting oil circulation pipeline, 3-electric heating heat conducting oil furnace, 4-gas heating heat conducting oil furnace, 5-total hydrogen gas output pipeline, 6-shunt valve, 7-first hydrogen gas output pipeline, 8-second hydrogen gas output pipeline, 9-total valve, 10-hydrogen release valve group cabinet, 11-cooler, 12-circulation pump, 13-first valve, 14-second valve. DETAILED DESCRIPTION

[0023] The technical solutions of the application will be described in detail below with reference to the drawings. Obviously, the described embodiments are some of the embodiments of the application, not all of the embodiments.

[0024] The components of the embodiments of the application described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the application.

[0025] Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the application.

[0026] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] The following refers to Figure 1 The hydrogen storage system according to some embodiments of the present application is described.

[0029] Referring to Figure 1 As shown in the drawings, the embodiments of the present application provide a hydrogen storage system, comprising: a hydrogen storage tank 1, a heat conducting oil circulating pipeline 2, an electric heating heat conducting oil furnace 3 and a gas heating heat conducting oil furnace 4; wherein the hydrogen storage tank 1 is formed with a heat conducting oil cavity and a heat conducting oil outlet and a heat conducting oil inlet respectively communicating with the heat conducting oil cavity, and the heat conducting oil outlet and the heat conducting oil inlet are communicated through the heat conducting oil circulating pipeline 2, and the heat conducting oil circulating pipeline 2 passes through the electric heating heat conducting oil furnace 3 and the gas heating heat conducting oil furnace 4, and the electric heating heat conducting oil furnace 3 and the gas heating heat conducting oil furnace 4 are both used for heating the heat conducting oil in the heat conducting oil circulating pipeline 2;

[0030] The hydrogen storage tank 1 is formed with a hydrogen storage material cavity separated from the heat conducting oil cavity and a hydrogen gas outlet communicating with the hydrogen storage material cavity, and the hydrogen gas outlet communicates with the combustion cavity of the gas heating heat conducting oil furnace 4, and is used for introducing hydrogen gas into the combustion cavity to heat the heat conducting oil by hydrogen gas combustion.

[0031] According to the structure described above, the present application provides a hydrogen storage system, in the use process, first, the hydrogen storage tank 1 is transported to the hydrogen using place after being filled with hydrogen gas, in addition to the hydrogen gas absorbed by the hydrogen storage material, the gas phase space in the hydrogen storage material cavity is filled with hydrogen gas, and the pressure range can be 0.3-3.0 MPa;

[0032] In the initial stage of hydrogen release, the hydrogen in the gas phase space is released and burns to release heat by the gas heating conduction oil furnace 4, assisted by the electric heating conduction oil furnace 3, to heat the conduction oil, which can quickly increase the temperature of the conduction oil flowing into the hydrogen storage tank 1, heat the hydrogen storage tank 1 to the hydrogen release temperature, and the hydrogen combustion heating method can significantly reduce the design power of the electric heating conduction oil furnace 3.

[0033] When the hydrogen storage material in the hydrogen storage tank 1 reaches the hydrogen release temperature, the released hydrogen is divided into two parts, one part is input to the customer for use, and the other part can be directly connected to the gas heating conduction oil furnace 4, burned in the gas heating conduction oil furnace 4 to release heat, and heat the conduction oil to provide heat for the hydrogen release of the hydrogen storage system.

[0034] It can be seen that by using the hydrogen carried by the hydrogen storage system for dehydrogenation endothermic reaction, on the one hand, the energy demand and equipment investment of the hydrogen release end can be greatly reduced, and on the other hand, using pure hydrogen as energy can significantly reduce carbon emissions.

[0035] It should be noted that in the initial state, that is, before the hydrogen storage tank 1 is used, a part of the hydrogen storage material cavity of the hydrogen storage tank 1 is provided with hydrogen storage material, and the other part is provided with hydrogen, and the excess hydrogen is used as fuel for the gas heating conduction oil furnace 4, and the hydrogen released by the hydrogen storage material is wasted, of course, not limited to this, but also can be provided with only hydrogen storage material in the hydrogen storage material cavity of the hydrogen storage tank 1 in the initial state, and then the conduction oil is heated by the electric heating conduction oil furnace 3 when the system starts to work, and the hydrogen released by the hydrogen storage material is used as fuel for the gas heating conduction oil furnace 4, which is selected according to actual needs.

[0036] In addition, it should be noted that the conduction oil pipe is provided outside the hydrogen storage material chamber, and the inside of the conduction oil pipe is the aforementioned conduction oil cavity, of course, not limited to this, the conduction oil cavity can also be annular and surround the outside of the hydrogen storage material chamber, of course, not limited to this, but also can be designed according to actual needs, and the structure of the hydrogen storage tank 1 is all prior art, which will not be described in detail here.

[0037] In this embodiment, preferably, as shown in Figure 1 The hydrogen storage system further comprises a total hydrogen output pipeline 5, a shunt valve 6, a first hydrogen output pipeline 7, and a second hydrogen output pipeline 8; the inlet end of the total hydrogen output pipeline 5 is connected with the hydrogen outlet, the outlet end of the total hydrogen output pipeline 5 is connected with the inlet end of the first hydrogen output pipeline 7 and the inlet end of the second hydrogen output pipeline 8 through the shunt valve 6; and the outlet end of the first hydrogen output pipeline 7 is connected with the combustion cavity of the gas heating conduction oil furnace 4.

[0038] According to the structure described above, when the hydrogen storage tank 1 reaches the hydrogen release temperature, the released hydrogen is divided by the shunt valve 6, part of the hydrogen is input to the customer through the second hydrogen output pipeline 8, and the other part of the hydrogen can directly pass to the gas heating conduction oil furnace 4.

[0039] Further, preferably, the shunt valve 6 can be a three-way shunt valve 6.

[0040] In this embodiment, preferably, as shown in the figure, Figure 1 The hydrogen storage system further comprises a total valve 9, and the total valve 9 is arranged on the total hydrogen output pipeline 5.

[0041] According to the structure described above, the total valve 9 is used to control the opening, closing or flow of the total hydrogen output pipeline 5, which has stronger controllability.

[0042] Further, preferably, the total valve 9 can be a stop valve, which mainly functions to cut off, adjust and throttle, of course, not limited to this, the type of valve can also be selected according to actual needs.

[0043] In this embodiment, preferably, as shown in the figure, Figure 1 The hydrogen storage system further comprises a hydrogen release valve group cabinet 10, and the second hydrogen output pipeline 8 passes through the hydrogen release valve group cabinet 10.

[0044] According to the structure described above, the hydrogen release valve group cabinet 10 has the following functions: filtering dust and impurities through a filter with a filtering precision of 5 microns; adjusting the hydrogen release pressure to a reasonable range through a pressure reducing valve; real-time metering of the pressure of hydrogen in the pipeline through a pressure transmitter; the hydrogen release valve group cabinet 10 can also quickly and stably adjust the hydrogen release mass flow; real-time metering of the instantaneous flow and cumulative flow of the hydrogen release process through a hydrogen mass flow meter; local control or remote start-stop of the hydrogen release start-stop through an automatic valve; the hydrogen release valve group cabinet 10 also has the functions of pipeline purging and replacement; the hydrogen release valve group cabinet 10 also has the functions of overpressure alarm and discharge, which discharges when the pipeline pressure exceeds 1.5 MPa; the valve is used to realize the on-off control and flow regulation of the conduction oil; the nitrogen is used to blow the conduction oil furnace in the hydrogen storage vehicle to realize the oil blowing function; all monitored data can be uploaded to the control center, and the curve can be automatically drawn, and the data can be stored, archived and called.

[0045] It should be noted that the hydrogen release valve group cabinet 10 is an existing valve group cabinet, and therefore its structure will not be described in detail.

[0046] In this embodiment, preferably, as shown in the figure, Figure 1 The hydrogen storage system further comprises a cooler 11, the second hydrogen output pipeline 8 passes through the cooler 11, and along the hydrogen conveying direction, the cooler 11 is arranged between the hydrogen release valve group cabinet 10 and the shunt valve 6.

[0047] According to the above-described structure, when the hydrogen storage tank 1 reaches the hydrogen release temperature, the released hydrogen is divided by the flow dividing valve 6, part of the hydrogen is first cooled by the cooler 11 on the second hydrogen output pipeline 8, and then passes through the hydrogen release valve group cabinet 10 and is finally delivered to the customer end for use, and the other part of the hydrogen can be directly delivered to the gas heating heat conducting oil furnace 4.

[0048] In this embodiment, preferably, as shown in Figure 1 The hydrogen storage system further comprises a circulating pump 12, and the heat conducting oil circulating pipeline 2 passes through the circulating pump 12.

[0049] According to the above-described structure, the circulating pump 12 can accelerate the circulation of the heat conducting oil in the system, thereby helping to improve the efficiency of hydrogen charging and discharging.

[0050] In this embodiment, preferably, as shown in Figure 1 Along the delivery direction of the heat conducting oil, the electric heating heat conducting oil furnace 3 and the gas heating heat conducting oil furnace 4 are both arranged between the hydrogen storage tank 1 and the circulating pump 12.

[0051] According to the above-described structure, along the delivery direction of the heat conducting oil, the circulating pump 12 is arranged behind the electric heating heat conducting oil furnace 3 and the gas heating heat conducting oil furnace 4, so that the heat conducting oil can be pumped into the electric heating heat conducting oil furnace 3 and the gas heating heat conducting oil furnace 4 in turn, and after heating is completed, the heat conducting oil can be pumped out of the above-mentioned devices and delivered to the hydrogen storage tank 1. Of course, it is not limited to this, the position of the circulating pump 12 can be designed according to actual needs, for example, it can also be arranged between the electric heating heat conducting oil furnace 3 and the gas heating heat conducting oil furnace 4, or arranged between the hydrogen storage tank 1 and the electric heating heat conducting oil furnace 3, etc.

[0052] In this embodiment, preferably, as shown in Figure 1 The hydrogen storage system further comprises a first valve 13, and the first valve 13 is arranged on the pipeline of the heat conducting oil circulating pipeline 2 close to the heat conducting oil outlet of the hydrogen storage tank 1.

[0053] According to the above-described structure, the opening, closing or flow of the inlet end of the heat conducting oil circulating pipeline 2 can be controlled by the first valve 13, and the controllability is stronger.

[0054] Further, preferably, the first valve 13 can be a stop valve, and the main function of the stop valve is to cut off, adjust and throttle, of course, it is not limited to this, the type of valve can also be selected according to actual needs.

[0055] In this embodiment, preferably, as shown in Figure 1 The hydrogen storage system further comprises a second valve 14, and the second valve 14 is arranged on the pipeline of the heat conducting oil circulating pipeline 2 close to the heat conducting oil inlet of the hydrogen storage tank 1.

[0056] As can be seen from the structure described above, the opening, closing, or flow rate of the outlet end of the heat transfer oil circulation pipeline 2 can be controlled by the second valve 14, which provides greater controllability. Moreover, when a problem occurs in a certain part of the pipeline, the heat transfer oil circulation pipeline 2 can be isolated from the system by closing the aforementioned first valve 13 and second valve 14, which facilitates maintenance or replacement operations.

[0057] Furthermore, preferably, the second valve 14 can be a flow valve. Of course, it is not limited to this, and the type of valve can be selected according to actual needs.

[0058] In this embodiment, preferably, as follows: Figure 1 As shown, along the flow direction of the heat transfer oil, the electric heating heat transfer oil furnace 3 is positioned close to the hydrogen storage tank 1 relative to the gas-fired heating heat transfer oil furnace 4.

[0059] As can be seen from the structure described above, the heat transfer oil output from the hydrogen storage tank 1 is first preheated by the electric heating heat transfer oil furnace 3, and then fully heated by the gas heating heat transfer oil furnace 4. This reduces the energy consumption of the electric heating heat transfer oil furnace 3 and helps to save energy.

[0060] Of course, it is not limited to this. Alternatively, the gas-fired heating thermal oil furnace 4 can be positioned relative to the electric heating thermal oil furnace 3 and closer to the hydrogen storage tank 1 along the flow direction of the thermal oil, depending on the actual needs.

[0061] In this embodiment, preferably, as follows: Figure 1 As shown, the hydrogen storage material stored in the hydrogen storage material cavity of hydrogen storage tank 1 is magnesium-based solid hydrogen storage material. That is to say, hydrogen storage tank 1 is a magnesium-based solid hydrogen storage tank. Of course, it is not limited to this, and hydrogen storage materials can be selected according to actual needs.

[0062] In summary, the detailed working process of the hydrogen storage system provided in this application is as follows:

[0063] After the heat conducting oil pipeline and the hydrogen pipeline are connected at the hydrogen release site, the heat conducting oil pipeline valves, i.e., the first valve 13 and the second valve 14, are opened, the circulating pump 12 and the water chiller / cooling tower (the main function of the water chiller / cooling tower is to provide cooling water for the circulating pump 12 and the cooler 11) are started, the electric heating heat conducting oil furnace 3 is started to heat the heat conducting oil, and at the same time, the hydrogen in the gaseous phase space in the hydrogen storage tank 1 is all introduced into the gas heating heat conducting oil furnace 4 after passing through the total hydrogen output pipeline 5 and the shunt valve 6, the hydrogen is combusted in the gas heating heat conducting oil furnace 4 to heat the heat conducting oil, the heated heat conducting oil is rapidly circulated into the hydrogen storage tank 1, the hydrogen storage material in the hydrogen storage tank 1 is rapidly heated to the hydrogen release temperature, and when the hydrogen storage material in the hydrogen storage tank 1 reaches the hydrogen release temperature, the released hydrogen is shunted, part of the hydrogen is introduced into the client for use, and the other part of the hydrogen can be directly introduced into the gas heating heat conducting oil furnace 4, combusted in the gas heating heat conducting oil furnace 4 to release heat and heat the heat conducting oil, thereby providing heat for the hydrogen release of the hydrogen storage system, and in this process, the opening of the hydrogen shunt valve 6 can be adjusted to ensure that the hydrogen storage system stably releases hydrogen and controls the temperature.

[0064] Based on the above, the present application is specifically described in detail by experiments

[0065] Experiment 1: Taking the standard hydrogen storage tank 1, i.e., the standard magnesium-based solid-state hydrogen storage tank, as an example, the single set of equipment has a hydrogen storage capacity of 1 ton, the power supply at the hydrogen release site is sufficient, the power of the electric heating heat conducting oil furnace 3 is more than 1 MW, at this time, the hydrogen released by the magnesium-based solid-state hydrogen storage tank does not need to be supplied to the gas heating heat conducting oil furnace 4, is cooled by the cooler 11, enters the hydrogen release valve group cabinet 10, is regulated and measured in terms of pressure and flow, and is directly supplied to the client for use.

[0066] Experiment 2: Taking the standard hydrogen storage tank 1, i.e., the standard magnesium-based solid-state hydrogen storage tank, as an example, the single set of equipment has a hydrogen storage capacity of 1 ton, the power supply at the hydrogen release site is limited, the power of the electric heating heat conducting oil furnace 3 is only 200 kW, which is insufficient to meet the rapid hydrogen release demand of the magnesium-based solid-state hydrogen storage tank, at this time, the hydrogen released by the magnesium-based solid-state hydrogen storage tank is supplied to the gas heating heat conducting oil furnace 4 after passing through the hydrogen shunt valve 6, about 21% of the hydrogen is supplied to the gas heating heat conducting oil furnace 4 to provide heat for hydrogen release, and the remaining 79% of the hydrogen is cooled by the cooler 11, enters the hydrogen release valve group cabinet 10, is regulated and measured in terms of pressure and flow, and is directly supplied to the client for use.

[0067] Experiment three: according to the standard hydrogen storage tank 1, that is, the standard magnesium-based solid hydrogen storage tank, the single set of equipment hydrogen storage capacity is 1 ton, the power supply of the hydrogen release place is limited, the power of the electric heating heat conducting oil furnace 3 is 500 kW, which is insufficient to meet the rapid hydrogen release demand of the magnesium-based solid hydrogen storage tank, at this time, the hydrogen released by the magnesium-based solid hydrogen storage tank is about 13% after passing through the flow valve 6, and the hydrogen is supplied to the gas heating heat conducting oil furnace 4 to provide heat for hydrogen release, and the remaining 87% of the hydrogen is cooled by the hydrogen cooler 11, then enters the hydrogen release valve group cabinet 10, and is controlled and metered by pressure and flow, and is directly supplied to the customer end for use.

[0068] It can be known from the above experiments that the hydrogen storage system provided in the application can greatly reduce the energy demand and equipment investment of the hydrogen release end by using the hydrogen carried by the hydrogen storage system itself for dehydrogenation endothermic reaction. On the one hand, the use of pure hydrogen as energy can significantly reduce carbon emissions.

[0069] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the application, and not to limit them; although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the application.

Claims

1. A hydrogen storage system, characterized by, The hydrogen storage system comprises a hydrogen storage tank, a heat conducting oil circulation pipeline, an electric heating heat conducting oil furnace and a gas heating heat conducting oil furnace. The hydrogen storage tank is formed with a heat conducting oil cavity, a heat conducting oil outlet and a heat conducting oil inlet which are communicated with the heat conducting oil cavity respectively, and the heat conducting oil outlet and the heat conducting oil inlet are communicated through the heat conducting oil circulation pipeline, and the heat conducting oil circulation pipeline passes through the electric heating heat conducting oil furnace and the gas heating heat conducting oil furnace, and the electric heating heat conducting oil furnace and the gas heating heat conducting oil furnace are used for heating the heat conducting oil in the heat conducting oil circulation pipeline. The hydrogen storage tank is formed with a hydrogen storage material cavity which is separated from the heat conducting oil cavity and a hydrogen outlet which is communicated with the hydrogen storage material cavity, and the hydrogen outlet is communicated with a combustion cavity of the gas heating heat conducting oil furnace, and is used for feeding hydrogen into the combustion cavity to heat the heat conducting oil by hydrogen combustion.

2. The hydrogen storage system of claim 1, wherein, The hydrogen storage system further comprises a total hydrogen output pipeline, a flow divider, a first hydrogen output pipeline and a second hydrogen output pipeline, wherein the inlet end of the total hydrogen output pipeline is communicated with the hydrogen outlet, the outlet end of the total hydrogen output pipeline is communicated with the inlet end of the first hydrogen output pipeline and the inlet end of the second hydrogen output pipeline through the flow divider, and the outlet end of the first hydrogen output pipeline is communicated with the combustion cavity of the gas heating heat conducting oil furnace.

3. The hydrogen storage system of claim 2, wherein, The hydrogen storage system further comprises a total valve, and the total valve is arranged on the total hydrogen output pipeline.

4. The hydrogen storage system of claim 2, wherein, The hydrogen storage system further comprises a hydrogen release valve group cabinet, and the second hydrogen output pipeline passes through the hydrogen release valve group cabinet.

5. The hydrogen storage system of claim 4, wherein, The hydrogen storage system further comprises a cooler, and the second hydrogen output pipeline passes through the cooler, and along the hydrogen conveying direction, the cooler is arranged between the hydrogen release valve group cabinet and the flow divider.

6. The hydrogen storage system of claim 1, wherein, The hydrogen storage system further comprises a circulating pump, and the heat conducting oil circulation pipeline passes through the circulating pump.

7. The hydrogen storage system of claim 6, wherein, Along the heat conducting oil conveying direction, the electric heating heat conducting oil furnace and the gas heating heat conducting oil furnace are arranged between the hydrogen storage tank and the circulating pump.

8. The hydrogen storage system of claim 1, wherein, The hydrogen storage system further comprises a first valve, and the first valve is arranged on the pipeline of the heat conducting oil circulation pipeline which is close to the heat conducting oil outlet of the hydrogen storage tank.

9. The hydrogen storage system of claim 1, wherein, The hydrogen storage system further comprises a second valve, and the second valve is arranged on the pipeline of the heat conducting oil circulation pipeline which is close to the heat conducting oil inlet of the hydrogen storage tank.

10. The hydrogen storage system of any one of claims 1 to 9, wherein, Along the heat conducting oil flow direction, the electric heating heat conducting oil furnace is arranged close to the hydrogen storage tank relative to the gas heating heat conducting oil furnace; and / or In the initial state, a part of the hydrogen storage material cavity of the hydrogen storage tank is arranged with hydrogen storage material, and another part is arranged with hydrogen; or in the initial state, only the hydrogen storage material cavity of the hydrogen storage tank is arranged with hydrogen storage material; and / or The hydrogen storage material stored in the hydrogen storage material cavity of the hydrogen storage tank is magnesium-based solid hydrogen storage material.

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