CN208846079U - A kind of hydrogen evaporation steam reclamation system of liquid hydrogen hydrogenation stations - Google Patents
A kind of hydrogen evaporation steam reclamation system of liquid hydrogen hydrogenation stations Download PDFInfo
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- CN208846079U CN208846079U CN201820521665.0U CN201820521665U CN208846079U CN 208846079 U CN208846079 U CN 208846079U CN 201820521665 U CN201820521665 U CN 201820521665U CN 208846079 U CN208846079 U CN 208846079U
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Abstract
The utility model discloses a kind of hydrogen of liquid hydrogen hydrogenation stations to evaporate steam reclamation system, is related to liquid hydrogen hydrogenation stations field.Recovery system described in the utility model includes BOG processing module, is recycled to the hydrogen evaporation vapour in liquid hydrogen hydrogenation stations；And control module, the BOG processing module is monitored and is controlled.Input fuel cell module generates electricity after technical solutions of the utility model heat BOG, and structure is simple, reduces the cost recovery of BOG.
Description
Technical field
The utility model relates to liquid hydrogen hydrogenation stations fields, are related specifically to a kind of hydrogen evaporation vapour recycling system of liquid hydrogen hydrogenation stations
System.
Background technique
To cope with the energy crisis and environmental problem that are on the rise, the development and utilization of clean energy resource is got over by various circles of society
Carry out more concerns.Wherein, hydrogen is known as fuel the most clean, application of the industry to it because only generating water after its burning
It is filled with expectation.Hydrogenation stations are infrastructure devices important in hydrogen energy source industrial chain, since storage of liquid hydrogen density is high, transportation cost
Low, hydrogenation stations also can store hydrogen using liquid hydrogen mode.Liquid hydrogen is the hydrogen that liquefies made of liquefying through low-temperature atmosphere-pressure, storage and transport
To guarantee its low temperature environment (about -253 DEG C) in the process.But submerged pump mechanical energy in the amount of heat of hydrogenation stations and tank, all can
Heat is passed to low temperature hydrogen container, leads to the evaporation of liquid hydrogen in hydrogen container, if the liquid hydrogen tank Daily boil-off-rate of 200m^3 is up to 0.3%
More than.The energy of this part liquid hydrogen either recycles or direct emission, all causes the loss of energy.
Scheme, which mainly passes through, at present increases the recycling that evaporation vapour (BOG) processor carries out BOG.Liquid hydrogen hydrogenation stations configure BOG
The equipment such as heater, BOG compressor, the steam by becoming normal temperature high voltage after BOG heater, the pressurization of BOG compressor are stored in
In high-pressure hydrogen storing bottle group.Or pressurizeed by compressor, then exchanged heat and liquefied by condenser, it is transformed into hydrogen container again.It is aobvious
And be clear to, the method needs to increase the equipment such as heater and compressor, and such equipment cost is very high.And system complex,
Management is inconvenient, and security risk is more, increases the cost of liquid hydrogen storage；And the recycling of BOG consumes energy, results in liquid
The utilization rate of hydrogen declines.
Such as the Chinese invention patent that notification number is CN106029491B, a kind of " evaporation steam processing system ", packet are disclosed
His compressor, heat exchanger, expansion cell, gas-liquid separation machine, bypass line, recirculation circuit and cooler are included, mainly
Compress and be supplied to BOG the engine of transporting equipment by fuel supply connection by compressor, and by using steaming
The cold and hot of hair steam itself realizes the re-liquefied of remaining evaporation steam, to the BOG generated in LNG transportational process carries out recycling benefit
With avoiding that individual refrigerant system is arranged, reduce installation cost and reduce equipment size.But the technical solution is only
It is used in and the BOG generated in transportational process is handled, be not suitable for handling the BOG generated in hydrogenation stations, and system is more
Complexity, inconvenience management.
For another example notification number is the Chinese invention patent of CN104913196B, is disclosed " a kind of normally to grasp for LNG receiving station
Make the BOG treatment process and device under operating condition ", which includes: that the BOG from LNG storage tank is sent into low pressure BOG pressure
Contracting machine is pressurized to 0.5~0.8MPaG, 0~5 DEG C of outlet temperature, enters LNG/BOG heat exchanger later；From LNG low-lift pump
Low pressure LNG pipeline conveying LNG enters LNG/BOG heat exchanger and the BOG of low pressure BOG compressor outlet exchanges heat, final BOG quilt
It is condensed into liquid；BOG lime set after being condensed enters BOG lime set surge tank；Meanwhile nitrogen pipeline is arranged in BOG lime set surge tank
Maintain buffer tank pressure 0.6MPaG；Lime set from BOG lime set surge tank enters force (forcing) pump, is forced into after 1.0MPaG, send
To LNG tank car entrucking, BOG processing is completed.The technical solution needs to increase the equipment such as heater and compressor, increases liquid hydrogen storage
The cost of hiding.
Utility model content
The utility model aim is to provide the hydrogen evaporation steam reclamation system and technique of a kind of liquid hydrogen hydrogenation stations, solves existing skill
The problems such as BOG in art in hydrogenation stations is recycled at high cost, system complex, management is inconvenient.
In order to achieve the above objectives, the utility model embodiment discloses a kind of hydrogen evaporation vapour recycling system of liquid hydrogen hydrogenation stations
System, including BOG processing module are recycled the hydrogen evaporation vapour in liquid hydrogen hydrogenation stations；And control module, to described
BOG processing module is monitored and controls.Wherein, BOG processing module includes hydrogen container, is used to store liquid hydrogen；BOG heating
Device is connect with the hydrogen container, is heated to hydrogen evaporation vapour；Surge tank is connect, for depositing with the BOG heater
Store up it is heated after hydrogen evaporation vapour；Fuel cell module is connect with the surge tank, is received hydrogen and is electrochemically reacted.
Through the above technical solutions, being recycled to the BOG in hydrogenation stations, workflow is main are as follows: hydrogen container
In BOG be discharged by BOG discharge pipe, first pass through BOG heater and improve to predetermined temperature, then be stored in surge tank, so
The fuel cell module for accessing distributed energy afterwards, finally exports electric energy, to other power supply for electrical equipment of hydrogenation stations.Program knot
Structure is simple, reduces the cost recovery of BOG.
Further, the utility model embodiment also discloses is arranged between above-mentioned surge tank and the fuel cell module
There is hydrogen make pipeline, the unmatched problem of the demand of the capacity and fuel cell module that can solve surge tank.
Preferably, the utility model embodiment also discloses the hydrogen storage in hydrogenation stations described in above-mentioned hydrogen make piping connection
The space that gas cylinder, in this way setting save hydrogenation stations, does not need that hydrogen storage cylinder in addition is arranged.
Preferably, the utility model embodiment also discloses and is provided with spare hydrogen storage cylinder on above-mentioned hydrogen make pipeline,
Spare hydrogen storage cylinder connects the high-pressure carburetor in the hydrogenation stations, and setting in this way can reduce BOG processing flow path to adding hydrogen stream
The interference on road is suitble to the hydrogenation stations for adding hydrogen demand big.
Further, the utility model embodiment also discloses a control module, and the prison to BOG processing module may be implemented
It surveys and controls, specifically include following three submodules:
Incude detection sub-module, is used to detect pressure, temperature and flow in the BOG processing module, including pressure
Force snesor, temperature sensor and mass flowmenter；
Central control submodule is connect with the induction detection sub-module, is received and is come from the induction detection sub-module
Pressure, temperature and flow signal；
Control submodule is executed, is connect with the central control submodule, is received from the central control submodule
Control instruction, the BOG processing module is controlled, execute control submodule include safety valve, the first solenoid valve, second
Solenoid valve, pressure reducing valve, unloading valve, third electromagnetism.
Further, the utility model embodiment also discloses safety valve and the first solenoid valve is successively set on BOG and adds
Between hot device and surge tank；Pressure sensor, pressure reducing valve, unloading valve, temperature sensor, mass flowmenter and second solenoid valve according to
It is secondary to be arranged between surge tank and fuel cell module, hydrogen make pipeline is connected between pressure sensor and pressure reducing valve；Third
Solenoid valve is arranged on hydrogen make pipeline.
Further, the utility model embodiment also discloses the hydrogen evaporation steam reclamation system of above-mentioned all liquid hydrogen hydrogenation stations
All include:
Heat exchanger is connect with fuel cell module, for recycling the high-temperature water generated in fuel cell operations
Or high-temperature water vapor heating；
Or Absorption Refrigerator, it connect with fuel cell module, is generated in fuel cell operations for recycling
High-temperature water or high-temperature water vapor refrigeration.
The utility model embodiment also discloses a kind of recycling based on above-mentioned liquid hydrogen hydrogenation stations hydrogen evaporation steam reclamation system
Technique, comprising the following steps:
(1) hydrogen heated in hydrogenation stations hydrogen container evaporates vapour, is stored in the surge tank；
(2) hydrogen in the surge tank is input to fuel cell module, and the fuel cell module produces electricl energy, to institute
State other power supply for electrical equipment of hydrogenation stations；
(3) high-temperature water or high-temperature water vapor and heat exchanger generated in the fuel cell operations exchanges heat, institute
It states heat exchanger and provides thermal energy to the hydrogenation stations；Or
The high-temperature water or high-temperature water vapor generated in the fuel cell operations is input to Absorption Refrigerator, institute
It states absorption refrigerating machine and provides cold energy to the hydrogenation stations.
Further, the utility model embodiment also discloses in step (2), when the hydrogen in above-mentioned surge tank cannot
When meeting the needs of fuel cell module, hydrogenation stations add hydrogen flow path to the fuel cell module hydrogen make-up.
The utility model provides a kind of method for handling BOG, can apply in liquid hydrogen hydrogenation stations occasion, and will stand interior liquid hydrogen storage
The evaporation vapour of liquid hydrogen in tank inputs fuel cell cogeneration system, be the location with electricity such as Zhan Nei convenience store, office and
Hot water can also increase absorption refrigerating equipment and provide refrigeration.The advantages of this novel hydrogenation station, is:
1, liquid hydrogen BOG discharge is reduced, keeps system safer；
2, equipment needed for saving BOG recycling, significantly reduces cost of building a station；Simplify system, reduces energy consumption；
3, fuel cell cogeneration system improves power supply heating directly using the hydrogen of BOG discharge as the energy
Efficiency reduces the hydrogen supply cost of fuel cell cogeneration system；
4, the inconvenient remote districts of power supply heating are particularly suitable for, the advantage of distributed energy can be given full play to.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the utility model hydrogen evaporation vapour recovery process flow chart.
Fig. 2 is the structural schematic diagram of the utility model hydrogen evaporation steam reclamation system.
Fig. 3 is the structural schematic diagram of the utility model another kind hydrogen evaporation steam reclamation system.
Fig. 4 is a kind of control logic block diagram of hydrogen evaporation steam reclamation system of the utility model.
Fig. 5 is the logic diagram of the utility model control module.
Fig. 6 is the flow chart of the utility model control module.
In attached drawing
1, hydrogen container 2, BOG heater 3, surge tank
4, fuel cell module 5, heat exchanger 6, Absorption Refrigerator
7, liquid hydrogen booster pump 8, high-pressure carburetor 9, hydrogen storage cylinder
10, add hydrogen machine 11, safety valve 12, the first solenoid valve
13, pressure sensor 14, pressure reducing valve 15, unloading valve
16, temperature sensor 17, mass flowmenter 18, second solenoid valve
19, third solenoid valve 20, spare hydrogen storage cylinder
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, with reference to embodiments, to this
Utility model is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain that this is practical
It is novel, it is not used to limit the utility model.
As shown in Figure 1, present embodiment discloses a kind of hydrogen of liquid hydrogen hydrogenation stations to evaporate vapour recovery process, can efficiently return
It receives and evaporates vapour (BOG) using the hydrogen in liquid hydrogen hydrogenation stations.
In existing hydrogenation stations, conventional adds hydrogen flow path are as follows: liquid hydrogen is pressurized after hydrogen container outflow through liquid hydrogen booster pump
To predetermined pressure, it is vaporized into Gaseous Hydrogen using high-pressure carburetor, is stored in hydrogen storage cylinder, then by adding hydrogen machine that combustion is added
Expect in the equipment such as battery car.But the part liquid hydrogen in hydrogen container is flashed to BOG, is caused energy due to the input of external energy
Amount loss.
To solve the above problems, the present embodiment on the basis of original plus hydrogen flow path, increases BOG processing flow path.At BOG
Manage flow path are as follows: BOG (about -150 DEG C) is discharged by BOG discharge pipe in hydrogen container, is improved by BOG heater to predetermined temperature
Degree, and be stored in surge tank, then by the fuel cell module of the hydrogen access distributed energy of caching, finally output is electric
Energy.
Flow path, a kind of hydrogen evaporation vapour recovery process of liquid hydrogen hydrogenation stations disclosed in the present embodiment, tool are handled based on above-mentioned BOG
Body the following steps are included:
1, it by after the heated device heating of evaporation vapour (BOG) in hydrogenation stations hydrogen container, is stored in surge tank.
2, by the hydrogen in surge tank be input to fuel cell module carry out chemical reaction produce electricl energy, to hydrogenation stations other
Power supply for electrical equipment.Wherein, when the hydrogen in surge tank is not able to satisfy the demand of fuel cell module, divide from adding in hydrogen flow path
The hydrogen make after a part vaporization is to fuel cell module out.
3, it heats or freezes using the high-temperature water or high-temperature water vapor generated in fuel cell operations: high temperature
Water or high-temperature water vapor can be mentioned directly to the places such as the office of hydrogenation stations and convenience store by heat exchanger heat hot water
Supplying hot water and heating；High-temperature water or high-temperature water vapor are office and convenience store of hydrogenation stations etc. by Absorption Refrigerator
Place refrigeration.
In above-mentioned steps (2), the chemical energy that fuel cell module generates the oxygen reaction in hydrogen and air is direct
Dress is changed to electric energy, and reaction product is water, also may be recovered utilization, reaches energy-saving and environment-friendly effect.Main reflection is as follows:
Cathode: H2+2OH-→2H2O+2e-
Anode: 1/2O2+H2O+2e-→2OH-
Cell reaction: H2+1/2O2==H2O
As shown in Fig. 2, being based on above-mentioned BOG recovery process, the present embodiment also discloses a kind of hydrogen evaporation of liquid hydrogen hydrogenation stations
Steam reclamation system, including BOG processing module and control module, control module are monitored and control to BOG processing module.
In the present embodiment, BOG processing module includes hydrogen container 1, and hydrogen container 1 connects BOG heater by BOG delivery pipe
2, BOG is conveyed to BOG heater 2.BOG heater 2 connects surge tank 3, and the hydrogen after heating is stored in surge tank 3.It is slow
It rushes tank 3 and connects fuel cell module 4, convey hydrogen to fuel cell module 4 and be electrochemically reacted.Fuel cell module 4 connects
Heat exchanger 5 and Absorption Refrigerator 6 are connect, heat exchanger 5 and Absorption Refrigerator 6 receive the fuel cell module course of work
In high-temperature water or high-temperature water vapor.
In view of 3 capacity of surge tank and the unmatched problem of 4 demand of fuel cell module, in surge tank 3 and fuel cell
It is provided with hydrogen make pipeline between module 4, the hydrogen storage cylinder 9 in the existing hydrogenation stations hydrogenation system of hydrogen make piping connection,
When the hydrogen in surge tank 3 is not able to satisfy the demand of fuel cell module 4, hydrogen storage cylinder 9 can pass through hydrogen make pipeline
To 4 hydrogen make-up of fuel cell module.Wherein, hydrogenation system includes hydrogen container 1, liquid hydrogen booster pump 7, high-pressure carburetor 8, hydrogen storage
Gas cylinder 9 plus hydrogen machine 10.
Or as shown in figure 3, hydrogen make pipeline can also be connect with the high-pressure carburetor 8 in hydrogenation system, hydrogen make
In addition spare hydrogen storage cylinder 20 is set on pipeline, by hydrogen storage a part after the vaporization of high-pressure carburetor 8 in spare hydrogen storage
It is 4 hydrogen make-up of fuel cell module in gas cylinder 20.
In the present embodiment, fuel cell module 4 is hydrogen-air fuel cell, including electrode, electrolyte membrance and current-collector
Equal elements penetrate proton exchange membrane with the oxygen in air using the hydrogen in surge tank as fuel after electrochemical reaction
It produces electricl energy, reaction product is water.
In the present embodiment, the workflow of BOG processing module are as follows:
Firstly, recycling to the BOG in hydrogen container 1: the BOG in hydrogen container 1 is discharged by BOG discharge pipe, is first passed through
It crosses BOG heater 2 to improve to predetermined temperature, then is stored in surge tank 3, then access the fuel cell module of distributed energy
4, electric energy is finally exported, to other power supply for electrical equipment of hydrogenation stations；
Secondly, being recycled to the high-temperature water or high-temperature water vapor that are generated in 4 course of work of fuel cell module:
High-temperature water or high-temperature water vapor enter heat exchanger 5 and heat to domestic water, can be directly to the office of hydrogenation stations
Hot water and heating are provided with places such as convenience stores；High-temperature water or high-temperature water vapor enter Absorption Refrigerator 6, absorption refrigeration
Machine 6 absorbs heat from high-temperature water or high-temperature water vapor and the places such as office and convenience store for generating cold feed hydrogenation stations
Refrigerating device refrigeration.
As shown in figure 4, in the present embodiment, control module includes induction detection sub-module, middle control submodule and execution
Control submodule, induction detection sub-module are connect with middle control submodule, and middle control submodule, which reconnects, executes control submodule, and feels
The element answered detection sub-module and execute control submodule is distributed in BOG processing module, implements monitoring and control to BOG processing module
System.
As shown in figure 5, induction detection sub-module includes pressure sensor 13, temperature sensor 16 and mass flowmenter 17 etc.
Element, middle control submodule are PLC controller, and executing control submodule includes safety valve 11, the first solenoid valve 12, second solenoid valve
18, the elements such as pressure reducing valve 14, unloading valve 15,19 valve of third electromagnetism.Wherein, induction detection sub-module is transmitted to middle control submodule
Pressure, temperature and flow signal in BOG processing module, middle control submodule is according to the pressure, temperature and flow signal received
The first solenoid valve 12, second solenoid valve 18 and third solenoid valve 19 is controlled to open or close.
As shown in figures 2 and 3, for realize monitoring and control to BOG processing module, safety valve 11 and the first solenoid valve 12 according to
It is secondary be arranged between BOG heater 2 and surge tank 3, pressure sensor 13, pressure reducing valve 14, unloading valve 15, temperature sensor 16,
Mass flowmenter 17 and second solenoid valve 18 are successively set between surge tank 3 and fuel cell module 4, and third solenoid valve 19 is set
It sets on hydrogen make pipe, and the gas outlet of hydrogen make pipeline is arranged between pressure sensor 13 and pressure reducing valve 14.It is based on
This, the workflow of control module as shown in fig. 6, specifically:
(1) pressure of the BOG after safety valve 11 detects after BOG heater 2 heats, passes through safety if hypertonia
Valve is discharged to diffuse channel, if pressure normally if convey BOG and enter surge tank 3；
(2) pressure sensor 13 detect surge tank 3 in pressure, if pressure inside the tank normally if convey hydrogen to pressure reducing valve
14 are depressurized；If pressure inside the tank is too low, pressure sensor 13 transmits a signal to middle control submodule, middle control submodule control
Third solenoid valve 19 is opened, and hydrogen make pipeline hydrogen make-up is passed through；
(3) pipeline pressure after the detection of unloading valve 15 decompression, if hypertonia, unloading valve is opened, by extra hydrogen
Gas is discharged into diffuse channel；
(4) temperature sensor 16 and mass flowmenter 17 detect the temperature and flow of the hydrogen in pipeline, if hydrogen temperature
Not in the reasonable scope higher than predetermined temperature value and mass flow, during temperature sensor 16 and mass flowmenter 17 transmit a signal to
It controls control submodule in submodule and controls the first solenoid valve 16, second solenoid valve 18 and the closing of third solenoid valve 19, and alarm；If just
Often, hydrogen eventually enters into fuel cell module 4 and is reacted.
Above-mentioned control flow can guarantee that fuel cell obtains stable hydrogen supply, can also guarantee entire BOG processing
The operation of system safety and steady.
Although the illustrative specific embodiment of the utility model is described above, in order to the art
Technical staff is it will be appreciated that the utility model, but the utility model is not limited only to the range of specific embodiment, to this technology
For the those of ordinary skill in field, as long as long as the utility model that various change is limited and determined in the attached claims
In spirit and scope, all are created using the utility model of the utility model design in the column of protection.
Claims (7)
1. the hydrogen of liquid hydrogen hydrogenation stations a kind of evaporates steam reclamation system, which is characterized in that the recovery system includes:
BOG processing module is recycled the hydrogen evaporation vapour in liquid hydrogen hydrogenation stations, and the BOG processing module includes
Hydrogen container is used to store liquid hydrogen,
BOG heater is connect with the hydrogen container, is heated to hydrogen evaporation vapour,
Surge tank is connect with the BOG heater, for store it is heated after hydrogen evaporate vapour,
Fuel cell module is connect with the surge tank, is received hydrogen and is electrochemically reacted；
Control module is monitored and controls to the BOG processing module.
2. a kind of hydrogen of liquid hydrogen hydrogenation stations according to claim 1 evaporates steam reclamation system, wherein the surge tank and institute
It states and is provided with hydrogen make pipeline between fuel cell module.
3. a kind of hydrogen of liquid hydrogen hydrogenation stations according to claim 2 evaporates steam reclamation system, wherein the hydrogen make pipe
Road connects the hydrogen storage cylinder in the hydrogenation stations.
4. a kind of hydrogen of liquid hydrogen hydrogenation stations according to claim 2 evaporates steam reclamation system, wherein the hydrogen make pipe
Road is provided with spare hydrogen storage cylinder, and the spare hydrogen storage cylinder connects the high-pressure carburetor in the hydrogenation stations.
5. a kind of hydrogen of liquid hydrogen hydrogenation stations according to claim 1 evaporates steam reclamation system, wherein the control module packet
It includes:
Incude detection sub-module, be used to detect pressure, temperature and flow in the BOG processing module, including pressure passes
Sensor, temperature sensor and mass flowmenter；
Central control submodule is connect with the induction detection sub-module, receives the pressure from the induction detection sub-module
Power, temperature and flow signal；
Control submodule is executed, is connect with the central control submodule, the control from the central control submodule is received
System instruction, controls the BOG processing module, the execution control submodule includes safety valve, the first solenoid valve, second
Solenoid valve, pressure reducing valve, unloading valve, third solenoid valve.
6. a kind of hydrogen of liquid hydrogen hydrogenation stations according to claim 5 evaporates steam reclamation system, wherein the safety valve and institute
The first solenoid valve is stated to be successively set between the BOG heater and the surge tank；The pressure sensor, the decompression
Valve, the unloading valve, the temperature sensor, the mass flowmenter and the second solenoid valve are successively set on the buffering
Between tank and the fuel cell module, the hydrogen make pipeline is connected between the pressure sensor and the pressure reducing valve；
The third solenoid valve is arranged on the hydrogen make pipeline.
7. a kind of hydrogen of liquid hydrogen hydrogenation stations according to claim 1 to 6 evaporates steam reclamation system, wherein also wrap
It includes:
Heat exchanger is connect with the fuel cell module, for recycling the high-temperature water generated in fuel cell operations
Or high-temperature water vapor heating；
Absorption Refrigerator is connect with the fuel cell module, for recycling the height generated in fuel cell operations
Warm water or high-temperature water vapor refrigeration.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108386716A (en) * | 2018-04-13 | 2018-08-10 | 张家港氢云新能源研究院有限公司 | A kind of the hydrogen evaporation gas recycling system and technique of liquid hydrogen hydrogenation stations |
| CN114087522A (en) * | 2021-11-04 | 2022-02-25 | 北京航天发射技术研究所 | Zero-loss liquid hydrogen storage and transportation and hydrogenation system, equipment and transport vehicle |
| US20230096282A1 (en) * | 2021-09-24 | 2023-03-30 | L'air Liquide, Société Anonyme pour l'Étude et l'Exploitation des Procédés Georges Claude | Integration process principles for maximizing the boil off recovery on a h2 liquefier plant |
-
2018
- 2018-04-13 CN CN201820521665.0U patent/CN208846079U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108386716A (en) * | 2018-04-13 | 2018-08-10 | 张家港氢云新能源研究院有限公司 | A kind of the hydrogen evaporation gas recycling system and technique of liquid hydrogen hydrogenation stations |
| US20230096282A1 (en) * | 2021-09-24 | 2023-03-30 | L'air Liquide, Société Anonyme pour l'Étude et l'Exploitation des Procédés Georges Claude | Integration process principles for maximizing the boil off recovery on a h2 liquefier plant |
| CN114087522A (en) * | 2021-11-04 | 2022-02-25 | 北京航天发射技术研究所 | Zero-loss liquid hydrogen storage and transportation and hydrogenation system, equipment and transport vehicle |
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