Liquid hydrogen storage bottle empty exhaust hydrogen absorption treatment system

Abstract

The utility model discloses a liquid hydrogen storage bottle empty discharge hydrogen absorption treatment system which comprises a liquid hydrogen storage bottle, a steam hydrogen pressure detection component, a hydrogen discharge control valve, a hydrogen storage container, a hydrogen elimination reactor and an air inlet pipeline, and the liquid hydrogen storage bottle is sequentially connected with the hydrogen storage container and the hydrogen elimination reactor through the absorption pipeline. The liquid hydrogen storage bottle is used for storing liquid hydrogen, the hydrogen storage container is used for storing vaporized gaseous hydrogen, and the vapor hydrogen pressure detection part and the hydrogen discharge control valve are arranged on the absorption pipeline and located between the liquid hydrogen storage bottle and the hydrogen storage container. One end of the air inlet pipeline is connected to the position, between the hydrogen storage container and the hydrogen elimination reactor, of the absorption pipeline, and the air inlet pipeline is used for inputting air into the hydrogen elimination reactor to achieve the hydrogen elimination reaction of oxygen and hydrogen. The device is simple in structure and low in energy consumption, can realize effective treatment of vaporized hydrogen in the liquid hydrogen storage bottle, and avoids risks such as hydrogen accumulation caused by direct discharge of hydrogen.

Description

Technical Field

[0001] The present application relates to the technical field of hydrogen processing, and in particular to a system for accommodating and processing hydrogen discharged from empty liquid hydrogen storage bottles. Background Art

[0002] As global energy shortages and environmental problems become increasingly prominent, the development and utilization of low-carbon, clean, and renewable energy is imminent in all countries around the world. Hydrogen energy has the characteristics of wide sources, rich application scenarios, high calorific value, zero carbon emissions, and renewable energy. It is regarded as the energy with the greatest development potential in the 21st century. At present, hydrogen energy has been widely used in transportation, industry, electronics, and construction. At the same time, hydrogen energy can also be used as an energy reserve to solve the energy crisis. Therefore, the hydrogen energy industry will usher in a huge development opportunity. The hydrogen energy industry chain includes the production, storage, transportation, and application of hydrogen. Among them, the storage and transportation of hydrogen is the key link connecting the upstream and downstream of the hydrogen energy industry chain, and it is also the main bottleneck for the efficient storage and transportation and large-scale utilization of hydrogen energy. The storage and transportation methods of hydrogen energy include high-pressure gaseous hydrogen storage, low-temperature liquid hydrogen storage, and metal hydride hydrogen storage. Among them, low-temperature liquid hydrogen storage has the advantages of high mass hydrogen storage density, high filling efficiency, and good safety. It is an ideal hydrogen storage technology in the future.

[0003] The boiling point of liquid hydrogen is extremely low, and there will inevitably be vaporization losses during storage and transportation. When hydrogen vaporizes and accumulates to a certain pressure, it needs to be discharged through devices such as safety valves to avoid affecting the safety of liquid hydrogen bottles. Therefore, liquid hydrogen storage has high reliability requirements for storage devices such as liquid hydrogen storage bottles, and also puts forward high requirements for the discharge pressure and rate of vaporized hydrogen. It is necessary to evacuate the hydrogen within a certain reasonable pressure range. Some existing technologies will directly evacuate the vaporized hydrogen from liquid hydrogen storage bottles, but in closed or poorly ventilated places, hydrogen is prone to accumulation, bringing risks such as explosions. At the same time, studies have shown that hydrogen can react with ozone in the stratosphere to destroy the ozone layer, and hydrogen will react with hydroxyl radicals in the air, resulting in a decrease in hydroxyl radicals that react with methane in the atmosphere, exacerbating the greenhouse effect. There is also an existing technology that uses a liquid hydrogen recovery system. The liquid hydrogen recovery system includes a conversion module and a storage module. The vaporized hydrogen is converted back into liquid hydrogen through the conversion module and collected in the storage module to reduce the evaporation loss of liquid hydrogen. Although this technology can solve the problem of exhaust hydrogen directly entering the atmosphere, the required equipment is complex, the operation is cumbersome, the cost is high, and it is difficult to promote on a large scale. Utility Model Content

[0004] Based on this, it is necessary to provide a system for consuming and treating the hydrogen discharged from the empty liquid hydrogen storage bottle. The system for consuming and treating the hydrogen discharged from the empty liquid hydrogen storage bottle of the present utility model has a simple structure and low energy consumption. It can adjust the gas output of the hydrogen path and the air path based on the target hydrogen concentration, effectively treat the vaporized hydrogen in the liquid hydrogen storage bottle, avoid risks such as hydrogen accumulation caused by direct hydrogen discharge, reduce hydrogen emissions, avoid affecting the atmospheric environment, and has the characteristics of economy, safety, and environmental protection.

[0005] An embodiment of the present application provides a system for consuming and treating the hydrogen discharged from the empty liquid hydrogen storage bottle.

[0006] A system for consuming and treating the hydrogen discharged from the empty liquid hydrogen storage bottle includes a liquid hydrogen storage bottle, a vapor hydrogen pressure detection component, a hydrogen discharge control valve, a hydrogen storage container, a hydrogen elimination reactor, and an air inlet pipe. The liquid hydrogen storage bottle is sequentially connected to the hydrogen storage container and the hydrogen elimination reactor through a consumption pipe. The liquid hydrogen storage bottle is used to store liquid hydrogen, and the hydrogen storage container is used to store vaporized gaseous hydrogen. The vapor hydrogen pressure detection component and the hydrogen discharge control valve are arranged on the consumption pipe and located between the liquid hydrogen storage bottle and the hydrogen storage container. One end of the air inlet pipe is connected to the consumption pipe at a position between the hydrogen storage container and the hydrogen elimination reactor, and the air inlet pipe is used to input air into the hydrogen elimination reactor to enable the hydrogen elimination reaction between oxygen and hydrogen.

[0007] In some of the embodiments, the system for consuming and treating the hydrogen discharged from the empty liquid hydrogen storage bottle further includes a hydrogen storage pressure detection component. The hydrogen storage pressure detection component is arranged on the consumption pipe and located between the hydrogen storage container and the hydrogen elimination reactor, and the hydrogen storage pressure detection component is close to the gas outlet end of the hydrogen storage container.

[0008] In some of the embodiments, the system for consuming and treating the hydrogen discharged from the empty liquid hydrogen storage bottle further includes a pulse width proportional valve. The pulse width proportional valve is arranged on the consumption pipe and located between the hydrogen storage container and the hydrogen elimination reactor, and the pulse width proportional valve is close to the gas outlet end of the hydrogen storage container.

[0009] In some of the embodiments, the system for consuming and treating the hydrogen discharged from the empty liquid hydrogen storage bottle further includes a hydrogen concentration detection component. The hydrogen concentration detection component is arranged on the consumption pipe and located between the hydrogen storage container and the hydrogen elimination reactor, and the hydrogen concentration detection component is close to the gas inlet end of the hydrogen elimination reactor.

[0010] In some of these embodiments, the hydrogen consumption processing system for emptying and discharging hydrogen from the liquid hydrogen storage bottle further includes a hydrogen consumption inlet pressure detection component, which is arranged on the consumption pipeline and located between the hydrogen storage container and the hydrogen consumption reactor, and the hydrogen consumption inlet pressure detection component is close to the air inlet end of the hydrogen consumption reactor.

[0011] In some of these embodiments, the hydrogen consumption processing system for emptying and discharging hydrogen from the liquid hydrogen storage bottle further includes a hydrogen consumption device temperature detection component, and the hydrogen consumption device temperature detection component is connected to the hydrogen consumption reactor.

[0012] In some of these embodiments, the hydrogen consumption processing system for emptying and discharging hydrogen from the liquid hydrogen storage bottle further includes a heat exchanger, which is arranged on the consumption pipeline and located at the air outlet end of the hydrogen consumption reactor.

[0013] In some of these embodiments, the hydrogen consumption processing system for emptying and discharging hydrogen from the liquid hydrogen storage bottle further includes a flame arrester, which is arranged on the consumption pipeline and located between the hydrogen storage container and the hydrogen consumption reactor.

[0014] In some of these embodiments, the hydrogen consumption processing system for emptying and discharging hydrogen from the liquid hydrogen storage bottle further includes an air filter, which is arranged on the air inlet pipeline.

[0015] In some of these embodiments, the hydrogen consumption processing system for emptying and discharging hydrogen from the liquid hydrogen storage bottle further includes a flow detection component, which is arranged on the air inlet pipeline.

[0016] In some of these embodiments, the hydrogen consumption processing system for emptying and discharging hydrogen from the liquid hydrogen storage bottle further includes a suction pump, which is arranged on the air inlet pipeline.

[0017] In some of these embodiments, the hydrogen consumption processing system for emptying and discharging hydrogen from the liquid hydrogen storage bottle further includes a safety valve and a safety pipeline. The safety pipeline is connected to the consumption pipeline at a position between the liquid hydrogen storage bottle and the hydrogen storage container, and the safety valve is connected to the safety pipeline.

[0018] The above-mentioned hydrogen consumption processing system for emptying and discharging hydrogen from the liquid hydrogen storage bottle can be applied to the field of liquid hydrogen storage and hydrogen supply. It adopts a mature technical route of consuming hydrogen by catalyzing the hydrogen-oxygen reaction to deal with the problem of hydrogen vaporization overpressure discharge caused by long-term storage or operation of the liquid hydrogen bottle. It can not only protect the atmospheric environment but also avoid the risk of hydrogen accumulation and explosion caused by emptying hydrogen. At the same time, compared with the current recovery scheme for vaporized hydrogen from liquid hydrogen storage bottles, this application has the advantages of fewer equipment, simple operation and control, and less energy consumption.

[0019] The above-mentioned liquid hydrogen storage bottle empty hydrogen gas disposal and treatment system has a simple structure, is safe and friendly, and is efficient and long-lasting. The core of the hydrogen disposal in the present application is a hydrogen disposal reactor carrying Pd and Pt-based catalysts. By controlling the hydrogen and oxygen mixed gas with a certain hydrogen concentration to enter the hydrogen disposal reactor, hydrogen oxidation chemical reaction is carried out under the action of the catalyst to generate water, thereby achieving effective hydrogen disposal and treatment. The hydrogen discharged from the liquid hydrogen storage bottle can be disposed of, and the hydrogen disposal control is carried out based on the target mixed hydrogen concentration, thereby achieving slow, safe and stable treatment of hydrogen and avoiding the direct discharge of high-concentration hydrogen into the air.

[0020] Compared with the conventional technology, the liquid hydrogen storage bottle empty hydrogen gas disposal system of the present application has the following beneficial effects:

[0021] (1) After the hydrogen discharged from the liquid hydrogen storage tank is treated by the hydrogen removal system, the hydrogen concentration can be reduced to 100 ppm, which is 1 / 400 of the lower explosion limit of hydrogen, thus achieving effective treatment of hydrogen.

[0022] (2) The hydrogen storage container realizes the temporary storage of the exhausted hydrogen, and then the continuous and slow release of hydrogen is achieved through the adjustment of the pulse width proportional valve at the rear end, avoiding the temperature fluctuation of the hydrogen decomposition reactor caused by the intermittent opening of the hydrogen decomposition.

[0023] (3) The uniformity of hydrogen mixing based on the target hydrogen mixing concentration is achieved by controlling the duty cycle of the pulse width proportional valve and the speed of the vacuum pump.

[0024] (4) The heat exchanger is controlled to start when the dehydrogenation temperature is greater than a certain threshold value to prevent the gas temperature after the dehydrogenation reaction from being too high and affecting the equipment. The heat exchanger is not turned on when the temperature is within a reasonable threshold range, which can reduce energy consumption.

[0025] (5) The safety valve can be installed to directly release the pressure of the liquid hydrogen storage tank in emergency situations such as fire, violent collision, etc., to avoid safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0027] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings. In the following description, the same reference numerals represent the same parts.

[0028] Figure 1 This is a schematic diagram of a system for accommodating and treating hydrogen discharged from a liquid hydrogen storage bottle according to an embodiment of the utility model;

[0029] Figure 2 Schematic diagram of the method for consuming and treating the hydrogen vented from the liquid hydrogen storage bottle in an embodiment of the present utility model.

[0030] Description of reference numerals

[0031] 10. System for consuming and treating the hydrogen vented from the liquid hydrogen storage bottle; 100. Liquid hydrogen storage bottle; 200. Steam hydrogen pressure detection component; 300. Hydrogen discharge control valve; 400. Hydrogen gas storage container; 500. Hydrogen consumption reactor; 600. Air intake pipe; 700. Hydrogen storage pressure detection component; 800. Pulse width ratio valve; 900. Hydrogen concentration detection component; 1000. Hydrogen consumption inlet pressure detection component; 1100. Hydrogen consumption device temperature detection component; 1200. Heat exchanger; 1300. Flame arrester; 1400. Air filter; 1500. Flow detection component; 1600. Air extraction pump; 1700. Safety valve; 1800. Safety pipe; 1900. Consumption pipe; 20. Hydrogen using equipment. Detailed implementation manners

[0032] In order to make the above objects, features and advantages of the present utility model more obvious and understandable, the following detailed description of the specific implementation manners of the present utility model will be given with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0033] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0034] In the present utility model, unless otherwise clearly defined and limited, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0035] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0036] In the description of the present utility model, the meaning of "several" is more than one, and the meaning of "multiple" is more than two. Understandings such as "greater than", "less than", "exceeding", etc. do not include the corresponding number, and understandings such as "above", "below", "within", etc. include the corresponding number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0037] In this article, "optionally", "optional", "option" mean "either may or may not exist", that is, it refers to any one selected from two alternative schemes of "existing" or "not existing". If "optional" appears in multiple places in a technical solution, without special instructions and without contradictions or mutual restrictions, each "optional" is independent. In this application, descriptions such as "optionally contain" and "optionally include" mean "contain or not contain".

[0038] In the present application, when it comes to a numerical interval (i.e., a numerical range), unless otherwise specified, the distribution of the optional numerical values in the numerical interval is considered to be continuous, and includes the two numerical endpoints (i.e., the minimum and maximum values) of the numerical interval, and each numerical value between the two numerical endpoints. Unless otherwise specified, when the numerical interval only refers to an integer in the numerical interval, it includes the two endpoint integers of the numerical range, and each integer between the two endpoints, which is equivalent to directly listing each integer. When multiple numerical ranges are provided to describe features or characteristics, these numerical ranges can be combined. In other words, unless otherwise specified, the numerical range disclosed in the present application should be understood to include any and all sub-ranges included therein. The "numerical value" in the numerical interval can be any quantitative value, such as a number, a percentage, a ratio, etc. "Numerical interval" allows for a broad range of quantitative intervals such as percentage intervals, ratio intervals, and ratio intervals.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0040] The embodiment of the present application provides a liquid hydrogen storage bottle empty hydrogen gas disposal treatment system to solve at least one of the following technical problems existing in the prior art: (1) hydrogen gas inevitably vaporizes during the storage and transportation of liquid hydrogen, and most of it is discharged into the atmosphere in the form of direct discharge, which will cause environmental problems as the amount of hydrogen used increases; (2) in a closed and poorly ventilated hydrogen use scenario, the direct discharge of hydrogen brings the risk of hydrogen accumulation; (3) recovering hydrogen by re-liquefaction of hydrogen, etc., the process equipment is complex and requires additional high-power consumption equipment such as liquid hydrogen pumps, which has the problem of high cost. The following will describe the liquid hydrogen storage bottle empty hydrogen gas disposal treatment system in conjunction with the accompanying drawings.

[0041] The liquid hydrogen storage bottle empty hydrogen gas disposal processing system 10 provided in the embodiment of the present application is exemplary, please refer to Figure 1 As shown, Figure 1 The structure diagram of the liquid hydrogen storage bottle empty hydrogen gas disposal processing system 10 provided in the embodiment of the present application. The liquid hydrogen storage bottle empty hydrogen gas disposal processing system 10 of the present application can be used for the purpose of disposing and processing the empty hydrogen gas of the liquid hydrogen storage bottle 100.

[0042] In order to more clearly illustrate the structure of the liquid hydrogen storage bottle empty hydrogen gas disposal and processing system 10, the liquid hydrogen storage bottle empty hydrogen gas disposal and processing system 10 will be introduced below with reference to the accompanying drawings.

[0043] For example, seeFigure 1 As shown in the figure, a liquid hydrogen storage bottle empty hydrogen discharge and consumption treatment system 10 includes a liquid hydrogen storage bottle 100, a vapor hydrogen pressure detection component 200, a hydrogen discharge control valve 300, a hydrogen storage container 400, a hydrogen consumption reactor 500, and an air inlet pipe 600. Please refer to Figure 1 As shown in the figure, on the one hand, the liquid hydrogen storage bottle 100 can be connected to a hydrogen-using device 20, and on the other hand, it is connected to a consumption pipeline.

[0044] Specifically, please refer to Figure 1 As shown in the figure, the liquid hydrogen storage bottle 100 is sequentially connected to the hydrogen storage container 400 and the hydrogen consumption reactor 500 through a consumption pipeline. The liquid hydrogen storage bottle 100 is used to store liquid hydrogen. The hydrogen storage container 400 is used to store vaporized gaseous hydrogen and can also act as a buffer tank to prevent high-pressure vaporized hydrogen from directly entering the consumption pipeline and impacting the pulse width ratio valve 800. The vapor hydrogen pressure detection component 200 and the hydrogen discharge control valve 300 are arranged on the consumption pipeline and are located between the liquid hydrogen storage bottle 100 and the hydrogen storage container 400. The vapor hydrogen pressure detection component 200 is used to monitor the pressure of the vaporized hydrogen in the liquid hydrogen storage bottle 100. The hydrogen discharge control valve 300 controls the discharge of the vaporized hydrogen in the liquid hydrogen storage bottle 100. One end of the air inlet pipe 600 is connected to the consumption pipeline at a position between the hydrogen storage container 400 and the hydrogen consumption reactor 500. The air inlet pipe 600 is used to input air into the hydrogen consumption reactor 500 to enable the hydrogen and oxygen to undergo a hydrogen consumption reaction. The hydrogen consumption reactor 500 provides a place for the chemical reaction between hydrogen and oxygen, and there is a hydrogen consumption catalyst in the hydrogen consumption reactor 500.

[0045] The above liquid hydrogen storage bottle empty hydrogen discharge and consumption treatment system 10 can be applied to the field of liquid hydrogen storage and hydrogen supply. It adopts a mature technical route of using a catalyst to catalyze the hydrogen-oxygen reaction to consume and treat the problem of hydrogen vaporization overpressure discharge caused by the long-term storage or operation of the liquid hydrogen bottle. It can not only protect the atmospheric environment but also avoid the risk of hydrogen accumulation and explosion caused by the empty discharge of hydrogen. At the same time, compared with the traditional recovery scheme of the vaporized hydrogen in the liquid hydrogen storage bottle 100, this application has the advantages of fewer equipment, simple operation and control, and less energy consumption. The above liquid hydrogen storage bottle empty hydrogen discharge and consumption treatment system 10 has a simple structure, is safe and friendly, and is efficient and long-lasting. The core of hydrogen consumption in this application is the hydrogen consumption reactor 500 carrying Pd and Pt-based catalysts. By controlling the mixture of hydrogen and oxygen with a certain hydrogen concentration to enter the hydrogen consumption reactor 500, the hydrogen-oxygen chemical reaction occurs under the action of the catalyst and water is generated, which can effectively consume and treat the hydrogen discharged from the empty liquid hydrogen storage bottle 100, and perform hydrogen consumption control based on the target hydrogen mixing concentration, so as to realize the slow, safe and stable treatment of hydrogen and avoid the direct discharge of higher-concentration hydrogen into the air.

[0046] In some of the embodiments, the vapor hydrogen pressure detection component 200 is a vapor hydrogen pressure sensor.

[0047] In some of these embodiments, the hydrogen discharge control valve 300 may be a hydrogen discharge solenoid valve.

[0048] In some of these embodiments, refer to Figure 1 As shown, the liquid hydrogen storage bottle empty hydrogen discharge and consumption treatment system 10 further includes a hydrogen storage pressure detection component 700. The hydrogen storage pressure detection component 700 is disposed on the consumption pipeline and is located between the hydrogen storage container 400 and the hydrogen consumption reactor 500. The hydrogen storage pressure detection component 700 is close to the gas outlet end of the hydrogen storage container 400. The hydrogen storage pressure detection component 700 is used to monitor the pressure of the hydrogen storage container 400.

[0049] In some of these embodiments, the hydrogen storage pressure detection component 700 is a hydrogen storage pressure sensor.

[0050] In some of these embodiments, refer to Figure 1 As shown, the liquid hydrogen storage bottle empty hydrogen discharge and consumption treatment system 10 further includes a pulse width proportional valve 800. The pulse width proportional valve 800 is disposed on the consumption pipeline and is located between the hydrogen storage container 400 and the hydrogen consumption reactor 500. The pulse width proportional valve 800 is close to the gas outlet end of the hydrogen storage container 400. The pulse width proportional valve 800 controls the release amount of hydrogen by opening different duty cycles. In this application, the pulse width proportional valve 800 (Pulse Width Modulation Proportional Valve, PWM Proportional Valve) is a valve that uses pulse width modulation technology to control the flow rate of fluids (such as gases or liquids). The pulse width proportional valve 800 adjusts the valve opening by changing the width of the pulse signal applied to the electromagnetic coil (i.e., the duty cycle), thereby achieving precise control of the fluid flow rate. The pulse width proportional valve 800 of this application has the characteristics of high precision, fast response speed, and strong adaptability.

[0051] In some of these embodiments, refer to Figure 1 As shown, the liquid hydrogen storage bottle empty hydrogen discharge and consumption treatment system 10 further includes a hydrogen concentration detection component 900. The hydrogen concentration detection component 900 is disposed on the consumption pipeline and is located between the hydrogen storage container 400 and the hydrogen consumption reactor 500. The hydrogen concentration detection component 900 is close to the gas inlet end of the hydrogen consumption reactor 500. The hydrogen concentration detection component 900 is used to monitor the hydrogen concentration of the hydrogen mixed and then entering the hydrogen consumption reactor 500.

[0052] In some of these embodiments, the hydrogen concentration detection component 900 is a hydrogen concentration sensor.

[0053] In some of these embodiments, refer to Figure 1As shown, the hydrogen consumption treatment system 10 for emptying hydrogen from liquid hydrogen storage bottles further includes a hydrogen consumption inlet pressure detection component 1000. The hydrogen consumption inlet pressure detection component 1000 is arranged on the hydrogen consumption pipeline and is located between the hydrogen storage container 400 and the hydrogen consumption reactor 500. The hydrogen consumption inlet pressure detection component 1000 is close to the air inlet end of the hydrogen consumption reactor 500. The hydrogen consumption inlet pressure detection component 1000 is used to monitor the pressure of the hydrogen-mixed gas at the inlet of the hydrogen consumption reactor 500.

[0054] In some embodiments, the hydrogen consumption inlet pressure detection component 1000 is a hydrogen consumption device temperature detection component 1100.

[0055] In some embodiments, please refer to Figure 1 As shown, the hydrogen consumption treatment system 10 for emptying hydrogen from liquid hydrogen storage bottles further includes a hydrogen consumption device temperature detection component 1100. The hydrogen consumption device temperature detection component 1100 is connected to the hydrogen consumption reactor 500. The hydrogen consumption device temperature detection component 1100 is used to monitor the temperature of the reaction during hydrogen consumption.

[0056] In some embodiments, the hydrogen consumption device temperature detection component 1100 is a hydrogen consumption device temperature sensor.

[0057] In some embodiments, please refer to Figure 1 As shown, the hydrogen consumption treatment system 10 for emptying hydrogen from liquid hydrogen storage bottles further includes a heat exchanger 1200. The heat exchanger 1200 is arranged on the hydrogen consumption pipeline and is located at the air outlet end of the hydrogen consumption reactor 500.

[0058] In some embodiments, please refer to Figure 1 As shown, the hydrogen consumption treatment system 10 for emptying hydrogen from liquid hydrogen storage bottles further includes a flame arrester 1300. The flame arrester 1300 is arranged on the hydrogen consumption pipeline and is located between the hydrogen storage container 400 and the hydrogen consumption reactor 500. The flame arrester 1300 prevents the hydrogen consumption reactor 500 from generating sparks or the fire in an emergency from igniting the hydrogen at the front end.

[0059] In some embodiments, please refer to Figure 1 As shown, the hydrogen consumption treatment system 10 for emptying hydrogen from liquid hydrogen storage bottles further includes an air filter 1400. The air filter 1400 is arranged on the air inlet pipeline 600. The air filter 1400 is used to filter the impurities in the air in the air inlet pipeline 600, prevent the catalyst in the hydrogen consumption reactor 500 from being polluted, and avoid affecting the catalytic efficiency.

[0060] In some embodiments, please refer to Figure 1 As shown, the hydrogen consumption treatment system 10 for emptying hydrogen from liquid hydrogen storage bottles further includes a flow detection component 1500. The flow detection component 1500 is arranged on the air inlet pipeline 600. The flow detection component 1500 is used to monitor the inlet air flow rate.

[0061] In some of these embodiments, the flow detection component 1500 may be a flow meter.

[0062] In some of these embodiments, refer to Figure 1 As shown, the liquid hydrogen storage bottle empty discharge hydrogen consumption treatment system 10 further includes an air extraction pump 1600. The air extraction pump 1600 is arranged on the air intake pipeline 600. The air extraction pump 1600 is used to extract air, and the intake air volume can be controlled by adjusting the rotation speed.

[0063] In some of these embodiments, refer to Figure 1 As shown, the liquid hydrogen storage bottle empty discharge hydrogen consumption treatment system 10 further includes a safety valve 1700 and a safety pipeline 1800. The safety pipeline 1800 is connected to the position between the liquid hydrogen storage bottle 100 and the hydrogen gas storage container 400 on the consumption pipeline, and the safety valve 1700 is connected to the safety pipeline 1800. In this application, setting the safety valve 1700 can directly relieve the pressure of the liquid hydrogen storage bottle 100 in case of emergencies such as fire, severe collision, etc., to avoid safety accidents.

[0064] In some of these embodiments, the safety valve 1700 may be a manual valve or an electromagnetic valve. Preferably, the safety valve 1700 is an electromagnetic valve.

[0065] An embodiment of this application also provides a method for treating the empty discharge hydrogen consumption of the liquid hydrogen storage bottle 100.

[0066] It should be noted that in this article, unless otherwise specified, each reaction step can be carried out in the order described in the text or not in the order described in the text. For example, other steps may be included between each reaction step, and the reaction steps can also be appropriately adjusted in order. This can be determined by those skilled in the art according to general knowledge and experience. Preferably, the reaction methods in this article are carried out sequentially.

[0067] A method for treating the empty discharge hydrogen consumption of the liquid hydrogen storage bottle 100, using the above-mentioned liquid hydrogen storage bottle empty discharge hydrogen consumption treatment system 10, includes the following steps:

[0068] Control the liquid hydrogen storage bottle 100 to store liquid hydrogen, control the vapor hydrogen pressure detection component 200 to detect the pressure inside the liquid hydrogen storage bottle 100 and obtain the pressure value P1. When the pressure value P1 ≥ the preset pressure value P, control the hydrogen discharge control valve 300 to open, so as to enable part of the gaseous hydrogen to enter the hydrogen gas storage container 400;

[0069] Control the gaseous hydrogen in the hydrogen storage container 400 to enter the hydrogen elimination reactor 500 at preset intervals, and control the air inlet pipeline 600 to input air into the hydrogen elimination reactor 500 to enable the hydrogen and oxygen to undergo a hydrogen elimination reaction. Among them, the volume ratio of the input air to the gaseous hydrogen is not less than 2.7; for example, the volume ratio of the input air to the gaseous hydrogen is 6:2 to 10:2. It should be noted that a catalyst is provided in the hydrogen elimination reactor 500. Preferably, the volume of the input air is slightly more than the actual volume required for the reaction with the gaseous hydrogen to ensure that the hydrogen can react completely and achieve the purpose of complete hydrogen elimination.

[0070] It is not difficult to understand that in some of these embodiments, oxygen can also be input into the hydrogen elimination reactor 500 by controlling the air inlet pipeline 600. At this time, the molar ratio of the input oxygen to the gaseous hydrogen is 1:2. To reduce costs, generally, the air inlet pipeline 600 is controlled to input air into the hydrogen elimination reactor 500.

[0071] In some of these embodiments, the method for disposing of the empty-drained hydrogen from the liquid hydrogen storage bottle 100 further includes the following steps:

[0072] Control the hydrogen elimination temperature detection component 1100 to detect the reaction temperature T1 in the hydrogen elimination reactor 500. When the reaction temperature T1 ≥ the preset temperature T, control the heat exchanger 1200 to be turned on to cool down the hydrogen elimination reactor 500 by heat exchange.

[0073] In this application, when the hydrogen in the liquid hydrogen storage bottle 100 vaporizes beyond a certain pressure, control the hydrogen discharge control valve 300 to open, and the vaporized hydrogen enters the hydrogen storage container 400. The hydrogen storage container 400 plays a role in buffering the discharge of the vaporized hydrogen, can temporarily store a part of the vaporized hydrogen, reduce the pressure of the hydrogen in the liquid hydrogen storage bottle 100, and the hydrogen in the hydrogen storage container 400 enters the hydrogen elimination reactor 500 through the subsequent gas mixing device, and a hydrogen-oxygen reaction occurs in the hydrogen elimination reactor 500 to achieve the disposal of the tail-discharged hydrogen.

[0074] Embodiment 1

[0075] This embodiment provides a system 10 for disposing of the empty-drained hydrogen from a liquid hydrogen storage bottle.

[0076] Please refer to Figure 1As shown in the figure, a liquid hydrogen storage bottle empty hydrogen discharge and consumption treatment system 10 includes a liquid hydrogen storage bottle 100, a vapor hydrogen pressure detection component 200, a hydrogen discharge control valve 300, a hydrogen gas storage container 400, a hydrogen consumption reactor 500, an air intake pipe 600, a hydrogen storage pressure detection component 700, a pulse width proportional valve 800, a hydrogen concentration detection component 900, a hydrogen consumption inlet pressure detection component 1000, a hydrogen consumption reactor temperature detection component 1100, a heat exchanger 1200, a flame arrester 1300, an air filter 1400, a flow rate detection component 1500, an air extraction pump 1600, a safety valve 1700, and a safety pipe 1800. Among them, the liquid hydrogen storage bottle 100 is sequentially connected to the hydrogen gas storage container 400 and the hydrogen consumption reactor 500 through a consumption pipe. The liquid hydrogen storage bottle 100 is used to store liquid hydrogen. The hydrogen gas storage container 400 is used to store vaporized gaseous hydrogen. The vapor hydrogen pressure detection component 200 and the hydrogen discharge control valve 300 are arranged on the consumption pipe and are located between the liquid hydrogen storage bottle 100 and the hydrogen gas storage container 400. Between the hydrogen gas storage container 400 and the hydrogen consumption reactor 500, a hydrogen storage pressure detection component 700, a pulse width proportional valve 800, a flame arrester 1300, a hydrogen concentration detection component 900, and a hydrogen consumption inlet pressure detection component 1000 are sequentially arranged. The hydrogen storage pressure detection component 700 is close to the outlet end of the hydrogen gas storage container 400. The pulse width proportional valve 800 is close to the outlet end of the hydrogen gas storage container 400. The air intake pipe 600 is provided with an air filter 1400, a flow rate detection component 1500, and an air extraction pump 1600. One end of the air intake pipe 600 is connected to the consumption pipe at a position between the hydrogen gas storage container 400 and the hydrogen consumption reactor 500, and the air intake pipe 600 is specifically connected at a position between the pulse width proportional valve 800 and the flame arrester 1300. The hydrogen consumption reactor temperature detection component 1100 is connected to the hydrogen consumption reactor 500. The heat exchanger 1200 is arranged on the consumption pipe and is located at the outlet end of the hydrogen consumption reactor 500. The safety pipe 1800 is connected to the consumption pipe at a position between the liquid hydrogen storage bottle 100 and the hydrogen gas storage container 400, and the safety valve 1700 is connected to the safety pipe 1800.

[0077] The liquid hydrogen storage bottle empty hydrogen discharge and consumption treatment system 10 of this embodiment uses few devices, has simple operation and control, and low energy consumption. It can adopt a mature technical route for hydrogen consumption by catalytic hydrogen-oxygen reaction to consume and treat the problem of hydrogen vaporization overpressure discharge caused by long-term storage or operation of the liquid hydrogen bottle, which can not only protect the atmospheric environment but also avoid the risk of hydrogen accumulation and explosion caused by empty hydrogen discharge.

[0078] Embodiment 2

[0079] This embodiment provides a method for treating the empty hydrogen discharge of the liquid hydrogen storage bottle 100.

[0080] The method for disposing of the hydrogen discharged from the liquid hydrogen storage bottle 100 in this embodiment adopts the liquid hydrogen storage bottle hydrogen discharge disposal system 10 in Embodiment 1 above.

[0081] The method for disposing of the hydrogen discharged from the liquid hydrogen storage bottle 100 in this embodiment includes the following steps. Please refer to Figure 2 as shown in

[0082] S1. Control the liquid hydrogen storage bottle 100 to store liquid hydrogen. Control the vapor hydrogen pressure detection component 200 to detect the pressure inside the liquid hydrogen storage bottle 100 and obtain the pressure value P1. When the pressure value P1 ≥ the preset pressure value P, control the hydrogen discharge control valve 300 to open so that part of the gaseous hydrogen enters the hydrogen storage container 400.

[0083] S2. Control the gaseous hydrogen in the hydrogen storage container 400 to enter the hydrogen elimination reactor 500 at preset intervals. Control the air intake pipeline 600 to input air into the hydrogen elimination reactor 500 to enable the hydrogen and oxygen to undergo a hydrogen elimination reaction. A catalyst is provided in the hydrogen elimination reactor 500. Among them, control the pulse width proportional valve 800 and the air extraction pump 1600 to perform corresponding pulse width modulation and speed control based on the target hydrogen mixing concentration. The volume ratio of the input air to the volume of the gaseous hydrogen is 2.7, and the mixed gas enters the hydrogen elimination reactor 500 and undergoes a hydrogen-oxygen chemical reaction under the action of the catalyst.

[0084] S3. Control the hydrogen eliminator temperature detection component 1100 to detect the reaction temperature T1 inside the hydrogen elimination reactor 500. During the hydrogen elimination reaction process, monitor and perform signal feedback processing on the internal temperature of the hydrogen elimination reactor 500, and adjust the hydrogen mixing concentration to prevent the catalyst in the hydrogen elimination reactor 500 from deactivating due to excessive temperature and also prevent low hydrogen elimination efficiency due to too low temperature. When the reaction temperature T1 ≥ the preset temperature T, control the heat exchanger 1200 to be turned on to exchange heat and cool down the hydrogen elimination reactor 500, and discharge the gas after the reaction in the hydrogen elimination reactor 500 after cooling.

[0085] In summary, the liquid hydrogen storage bottle hydrogen discharge disposal system 10 of the present application has the following beneficial effects compared with the traditional technology:

[0086] (1) After the hydrogen discharged from the liquid hydrogen storage bottle 100 is disposed of by the hydrogen elimination system, the hydrogen concentration can be reduced to the 100 ppm level, which is 1 / 400 of the lower explosion limit value of hydrogen, realizing the effective treatment of hydrogen.

[0087] (2) The hydrogen storage container 400 realizes the temporary storage of the discharged hydrogen, and then through the adjustment of the pulse width proportional valve 800 at the back end, the continuous and slow release of hydrogen is realized, avoiding the temperature fluctuation of the hydrogen elimination reactor 500 caused by the intermittent opening of the hydrogen elimination.

[0088] (3) By controlling the duty cycle of the pulse width proportional valve 800 and the rotational speed of the air extraction pump 1600, the uniformity of hydrogen mixing based on the target hydrogen mixing concentration is achieved, and the consumption treatment effect is improved.

[0089] (4) Control the heat exchanger 1200 to turn on when the hydrogen elimination temperature is greater than a certain threshold to prevent the gas temperature after the hydrogen elimination reaction from being too high and affecting the equipment. When the temperature is within a reasonable threshold range, the heat exchanger 1200 is not turned on, which can reduce energy consumption.

[0090] (5) Installing a safety valve 1700 can directly relieve the pressure of the liquid hydrogen storage bottle 100 in case of emergencies such as fire and severe collision, avoiding safety accidents.

[0091] In the above embodiments, the descriptions of each embodiment have their own focuses. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0092] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as these combinations of technical features do not conflict, they should be considered as within the scope described in this specification.

[0093] The above embodiments only represent several implementation manners of the present invention. The descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A liquid hydrogen storage bottle emptying hydrogen consumption and treatment system, characterized in that, It includes a liquid hydrogen storage bottle, a vapor hydrogen pressure detection component, a hydrogen discharge control valve, a hydrogen gas storage container, a hydrogen elimination reactor, and an air inlet pipe. The liquid hydrogen storage bottle is sequentially connected to the hydrogen gas storage container and the hydrogen elimination reactor through a consumption pipe. The liquid hydrogen storage bottle is used to store liquid hydrogen, and the hydrogen gas storage container is used to store vaporized gaseous hydrogen. The vapor hydrogen pressure detection component and the hydrogen discharge control valve are arranged on the consumption pipe and located between the liquid hydrogen storage bottle and the hydrogen gas storage container. One end of the air inlet pipe is connected to the consumption pipe at a position between the hydrogen gas storage container and the hydrogen elimination reactor, and the air inlet pipe is used to input air into the hydrogen elimination reactor to enable the hydrogen elimination reaction between oxygen and hydrogen.

2. The liquid hydrogen storage bottle emptying hydrogen consumption treatment system according to claim 1, wherein The liquid hydrogen storage bottle empty hydrogen discharge and consumption treatment system further includes a hydrogen storage pressure detection component. The hydrogen storage pressure detection component is arranged on the consumption pipe and located between the hydrogen gas storage container and the hydrogen elimination reactor, and the hydrogen storage pressure detection component is close to the outlet end of the hydrogen gas storage container.

3. The liquid hydrogen storage bottle emptying hydrogen consumption treatment system according to claim 1, wherein The liquid hydrogen storage bottle empty hydrogen discharge and consumption treatment system further includes a pulse width proportional valve. The pulse width proportional valve is arranged on the consumption pipe and located between the hydrogen gas storage container and the hydrogen elimination reactor, and the pulse width proportional valve is close to the outlet end of the hydrogen gas storage container.

4. The liquid hydrogen storage bottle emptying hydrogen consumption treatment system according to claim 1, wherein, The liquid hydrogen storage bottle empty hydrogen discharge and consumption treatment system further includes a hydrogen concentration detection component. The hydrogen concentration detection component is arranged on the consumption pipe and located between the hydrogen gas storage container and the hydrogen elimination reactor, and the hydrogen concentration detection component is close to the inlet end of the hydrogen elimination reactor.

5. The liquid hydrogen storage bottle emptying hydrogen consumption treatment system according to claim 1, characterized in that The liquid hydrogen storage bottle empty hydrogen discharge and consumption treatment system further includes a hydrogen elimination inlet pressure detection component. The hydrogen elimination inlet pressure detection component is arranged on the consumption pipe and located between the hydrogen gas storage container and the hydrogen elimination reactor, and the hydrogen elimination inlet pressure detection component is close to the inlet end of the hydrogen elimination reactor.

6. The liquid hydrogen storage bottle emptying hydrogen consumption treatment system according to claim 1, characterized in that The liquid hydrogen storage bottle empty hydrogen discharge and consumption treatment system further satisfies at least one of the following conditions: (1) The liquid hydrogen storage bottle empty hydrogen discharge and consumption treatment system further includes a hydrogen eliminator temperature detection component, and the hydrogen eliminator temperature detection component is connected to the hydrogen elimination reactor; (2) The liquid hydrogen storage bottle empty hydrogen discharge and consumption treatment system further includes a heat exchanger, and the heat exchanger is arranged on the consumption pipe and located at the outlet end of the hydrogen elimination reactor.

7. The liquid hydrogen storage bottle emptying hydrogen consumption treatment system according to claim 1, characterized in that, The liquid hydrogen storage bottle empty hydrogen discharge and consumption treatment system further satisfies at least one of the following conditions: (1) The liquid hydrogen storage bottle empty hydrogen discharge and consumption treatment system further includes a flame arrester, and the flame arrester is arranged on the consumption pipe and located between the hydrogen gas storage container and the hydrogen elimination reactor; (2) The liquid hydrogen storage bottle empty hydrogen discharge and consumption treatment system further includes an air filter, and the air filter is arranged on the air inlet pipe.

8. The liquid hydrogen storage bottle emptying hydrogen consumption treatment system according to any one of claims 1 to 7, characterized in that, The liquid hydrogen storage bottle empty hydrogen discharge and consumption treatment system further includes a flow detection component, and the flow detection component is arranged on the air inlet pipe.

9. The liquid hydrogen storage bottle emptying hydrogen consumption treatment system according to any one of claims 1 to 7, characterized in that, The liquid hydrogen storage bottle empty hydrogen discharge and consumption treatment system further includes an air extraction pump, and the air extraction pump is arranged on the air inlet pipe.

10. The liquid hydrogen storage bottle emptying hydrogen consumption and treatment system according to any one of claims 1 to 7, characterized in that, The liquid hydrogen storage bottle emptying hydrogen consumption treatment system further includes a safety valve and a safety pipeline. The safety pipeline is connected to the consumption pipeline at a position between the liquid hydrogen storage bottle and the hydrogen storage container, and the safety valve is connected to the safety pipeline.

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