CN110425416A - A kind of small-scale low energy consumption ladder hydrogen storage system and method - Google Patents
A kind of small-scale low energy consumption ladder hydrogen storage system and method Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
- F17C5/06—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with compressed gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C11/00—Use of gas-solvents or gas-sorbents in vessels
- F17C11/005—Use of gas-solvents or gas-sorbents in vessels for hydrogen
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/002—Details of vessels or of the filling or discharging of vessels for vessels under pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0107—Single phase
- F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
- F17C2223/035—High pressure (>10 bar)
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/01—Propulsion of the fluid
- F17C2227/0128—Propulsion of the fluid with pumps or compressors
- F17C2227/0157—Compressors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/04—Methods for emptying or filling
- F17C2227/046—Methods for emptying or filling by even emptying or filling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/01—Intermediate tanks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/04—Indicating or measuring of parameters as input values
- F17C2250/0404—Parameters indicated or measured
- F17C2250/0443—Flow or movement of content
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/45—Hydrogen technologies in production processes
Abstract
The present invention relates to small-scale low energy consumption ladder hydrogen storage systems, including hydrogen source, alloy hydrogen storage system and high-pressure hydrogen storing system；The input terminal of Hydrogen Line is arranged in hydrogen source, and Hydrogen Line connects high-pressure hydrogen storing system, and high-pressure hydrogen storing system includes classification hydrogen gas compressor and classification high-pressure hydrogen storing tank；Hydrogen Line is equipped with a branch, branch road setting alloy hydrogen storage system, and the output end of alloy hydrogen storage system is connected to the hydrogen gas compressor of high-pressure hydrogen storing system.The beneficial effects of the present invention are: small-scale low energy consumption ladder hydrogen storage system of the invention, for the big hydrogen source of flowed fluctuation, the method for reducing hydrogen storage energy consumption using ladder hydrogen storage system, pass through the hydrogen storage technologies such as alloy hydrogen storage, high-pressure hydrogen storing, carry out ladder hydrogen storage strategy, it reduces hydrogen and compresses energy consumption, reduce system and design redundancy, realize small-scale efficient, stable hydrogen storage；This method and security policy be reliable, efficient stable, economical and practical.
Description
Technical field
The present invention be used for the energy storage such as renewable electric energy storage, water electrolysis hydrogen production, methane reforming hydrogen manufacturing, by-product hydrogen purifying,
Hydrogen Energy field, specifically a kind of hydrogen storage system different by two kinds of energy consumptions of the series-parallel alloy hydrogen storage of staged and high-pressure hydrogen storing
System and the method that the steady hydrogen storage of low energy consumption is realized to the biggish hydrogen source of flowed fluctuation.
Background technique
Hydrogen Energy is known as not with its outstanding energy density, energy utilization efficiency and use process and the spatter property of product
" ultimate energy " come.But due to the low boiling point of hydrogen, inflammable and explosive performance and fugacity, so that hydrogen storage and transportation link is always
Safety and the test of high efficiency are faced, and becomes an important restriction factor of current Hydrogen Energy large-scale promotion application.Hydrogen
Storage mode can substantially be divided into the modes such as physical compression, liquefaction, absorption and chemical bonding, wherein alloy hydrogen storage, high-pressure hydrogen storing,
The methods of liquid hydrogen hydrogen storage is several more typical, widely used hydrogen storage technologies.Alloy hydrogen storage is to utilize nickel, magnesium, rare earth
Stronger physical absorption and the chemical bonding ability between metal or alloy and hydrogen such as element, it is advantageous that hydrogen storage bulk density
Height, alloy part material can realize the charge and discharge of hydrogen under Room-temperature low-pressure.In the places such as hydrogenation stations, hydrogen generator station, high-pressure hydrogen storing
It is the hydrogen storage form being most widely used, there are two kinds of pressure criterias of 35MPa and 70MPa at present to meet the need of different Hydrogen Energy vehicles
It asks.There is fixed high-pressure hydrogen storage advantages, the main energy consumptions such as cheap, amount of storage is big to be hydrogen gas compressor.Liquid hydrogen storage
Hydrogen is to carry out liquid storage after hydrogen to be cooled to -253 DEG C of liquefaction, is mainly used in space industry, but in recent years in the U.S., Japan
Etc. the extensive storage and transportation hydrogen in ground when also use the hydrogen storage mode.Liquid hydrogen hydrogen storage advantage is hydrogen storage density and storage and transportation efficiency
Height, is suitble to extensive long range hydrogen storage and transportation demand, but its disadvantage is to freeze that energy consumption is high for bring, accounts for about hydrogen self-energy
1/3.Therefore reasonable hydrogen storage scheme is designed, not only needs to consider memory capacity, the storage density of various hydrogen storage modes
And economy, it is also necessary to in storing process efficiency and energy consumption optimize.
Pertinent literature is as follows:
Gao Jinliang, Yuan Zeming, Shang Hongwei wait storing hydrogen technology and its stored energy application progress [J] metal function material
Material, 2016,1-11.
Guo Ziyang, Shi Yong, Guo Haotian wait to brief talk the Shanxi hydrogen bearing alloy [J] science and technology, 2019,129-132.
The hydrogen storage system that cooperation hydrogen is produced also needs the stability for hydrogen source to be designed and advise
It draws.The mode of extensive low cost hydrogen gas preparation can be mainly divided at present: natural gas or fossil fuel reformation hydrogen production, industrial by-product
Hydrogen purifies hydrogen manufacturing, renewable electric electrolytic hydrogen production, thermal power plant's peak regulation hydrogen manufacturing etc..There may be hydrogen gas productions for these hydrogen sources
Flow changes larger situation, and for example shortage, different sources industrial by-product hydrogen occur for natural gas supply in hydrogen making by natural gas reformation
Purity and flow change, renewable energy power generation amount is changed with sunshine and air quantity, thermal power plant's generation load peak regulation changes etc..
Hydrogen manufacturing amount, which will fluctuate biggish hydrogen source, to bring pressure to rear end hydrogen storage system: peak value hydrogen storage flow expands hydrogen storage and sets
Standby rated capacity and system redundancy, increases investment cost and operating cost；Simultaneously substantially, quick load change hydrogen storage work
Condition also increases the hydrogen storage component fallback time, increases operation power consumption, reduces system hydrogen storage efficiency.Therefore it is directed to hydrogen manufacturing
Amount fluctuates biggish hydrogen source, and hydrogen storage system needs to carry out system optimization and design, economy and the hydrogen storage effect of lifting system
Rate.
Pertinent literature is as follows:
Yu Hongmei, the precious honest and clean electrolytic hydrogen production of clothing and hydrogen energy storage [J] China engineering science, 2018,58-65.
Yuan Yuan, Zhang Xu are using Shanghai Industrial by-product hydrogen-rich gas to technical economic analysis [J] environment work of FCV hydrogen supply
Journey, 2009,304-307.
Li Qingxun, Liu Xiaotong, Liu Kefeng wait large-scale industry process for making hydrogen technology and its econmics comparison [J] natural
Gasify work, 2015,40,78-82.
Summary of the invention
The purpose of the present invention is overcoming deficiency in the prior art, provide a kind of small-scale low energy consumption ladder hydrogen storage system and
Method fluctuates biggish hydrogen source for hydrogen manufacturing amount, by the different hydrogen storage method such as alloy hydrogen storage, high-pressure hydrogen storing, carries out
Stepped series-parallel combination, to realize the steady hydrogen storage of low energy consumption.
This small-scale low energy consumption ladder hydrogen storage system, including hydrogen source, alloy hydrogen storage system and high-pressure hydrogen storing system；Hydrogen
The input terminal of Hydrogen Line is arranged in gas source, and Hydrogen Line connects high-pressure hydrogen storing system, and high-pressure hydrogen storing system includes classification hydrogen
Compressor and classification high-pressure hydrogen storing tank；Hydrogen Line is equipped with a branch, branch road setting alloy hydrogen storage system, alloy hydrogen storage system
The output end of system is connected to the hydrogen gas compressor of high-pressure hydrogen storing system.
As preferred: hydrogen source includes renewable electrolytic hydrogen production system, hydrogen making by natural gas reformation system and coproduct hydrogen purifying
System.
As preferred: alloy hydrogen storage system includes the hydrogen container of several filling alloy hydrogen storage materials, and every hydrogen container is equal
Busbar connector is inputted with hydrogen by valve and hydrogen exports busbar connector and is connected to.
As preferred: alloy hydrogen storage material is nickel-base alloy, magnesium base alloy or rare earth element alloy.
As preferred: the classification high-pressure hydrogen storing tank of high-pressure hydrogen storing system includes the high-pressure hydrogen storing tank of several different pressures,
To be connected in series between different pressures hydrogen container, it is connected in parallel between uniform pressure hydrogen container.
As preferred: high-pressure hydrogen storing tank type includes the seamless all-metal hydrogen storage bottle of I type, the winding storage of II type metal liner circumferential direction
Hydrogen bottle, type III metal liner wind hydrogen storage bottle entirely and IV plastic inner container carbon fiber winds hydrogen storage bottle entirely.
As preferred: the classification hydrogen gas compressor of high-pressure hydrogen storing system includes the hydrogen gas compressor of several different pressures.
As preferred: hydrogen gas compressor type includes reciprocating oilless (oil free) compressor and ionic liquid membrane compressor.
The control method of this small-scale low energy consumption ladder hydrogen storage system, comprising the following steps:
1) the Efficient Compression flow rate zone (Q of hydrogen gas compressor efficient operation is obtained1, Q2), and set hydrogen gas compressor and open
Dynamic threshold flow Q0；
2) when the hydrogen stream magnitude Q of source fluctuation adds alloy hydrogen storage system charge and discharge hydrogen stream magnitude QmObtained hydrogen pressure
Contracting flow value QcIn Efficient Compression flow rate zone (Q1, Q2) when, alloy hydrogen storage system charge and discharge hydrogen stream magnitude QmIt remains unchanged；
3) when hydrogen compresses flow value QcLower than Efficient Compression flow rate zone (Q1, Q2) i.e. Qc<Q1When, then enable hydrogen compression stream
Magnitude Qc=Q1；When hydrogen compresses flow value QcHigher than Efficient Compression flow rate zone (Q1, Q2) i.e. Qc>Q2When, then enable Qc=Q2；More
New alloy hydrogen storage system charge and discharge hydrogen stream magnitude Qm(Qm=Qc- Q) so that hydrogen gas compressor is maintained at Efficient Compression flow rate zone
Work；QmIt is from hydrogen source inputting hydrogen into alloy hydrogen storage system for negative value；
4) when the hydrogen stream magnitude Q of source fluctuation is lower than the threshold flow Q of hydrogen gas compressor starting0When, then hydrogen compresses
Organ's machine makes hydrogen compress flow value Qc=0, all hydrogen are deposited into alloy hydrogen storage system.
The beneficial effects of the present invention are: small-scale low energy consumption ladder hydrogen storage system of the invention, big for flowed fluctuation
Hydrogen source, the method for reducing hydrogen storage energy consumption using ladder hydrogen storage system, passes through the hydrogen storages skill such as alloy hydrogen storage, high-pressure hydrogen storing
Art carries out ladder hydrogen storage strategy, reduces hydrogen and compresses energy consumption, reduces system and designs redundancy, realizes small-scale efficient, stable hydrogen
Gas storage.This method and security policy be reliable, efficient stable, economical and practical.
Detailed description of the invention
Fig. 1 is small-scale low energy consumption ladder hydrogen storage system schematic diagram.
Fig. 2 is small-scale low energy consumption hydrogen storage policy control schematic diagram.
Fig. 3 is the low energy consumption hydrogen storage process simulation results figure according to practical photovoltaic power generation-electrolytic hydrogen production as fluctuation hydrogen source.
Specific embodiment
The present invention is described further below with reference to embodiment.The explanation of following embodiments is merely used to help understand this
Invention.It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, also
Can be with several improvements and modifications are made to the present invention, these improvement and modification also fall into the protection scope of the claims in the present invention
It is interior.
For the amounts of hydrogen less than 1 ton/day, solving small-scale low energy consumption hydrogen storage strategy used by its technical problem is:
According to hydrogen source fluctuation threshold, the hydrogen of most of stability of flow is selected directly to carry out high pressure storage by hydrogen gas compressor, and
In addition the big hydrogen of small part flowed fluctuation range first passes through alloy hydrogen storage system and carries out storage consumption, then from alloy hydrogen storage system
Release to hydrogen gas compressor carries out high pressure storage.
As shown in Figure 1, the small-scale low energy consumption ladder hydrogen storage system, including hydrogen source, alloy hydrogen storage system and height
Press hydrogen storage system；The input terminal of Hydrogen Line is arranged in hydrogen source, and Hydrogen Line connects high-pressure hydrogen storing system, high-pressure hydrogen storing system
Including classification hydrogen gas compressor and classification high-pressure hydrogen storing tank；Hydrogen Line is equipped with a branch, branch road setting alloy hydrogen storage system
System, the output end of alloy hydrogen storage system are connected to the hydrogen gas compressor of high-pressure hydrogen storing system.
The big hydrogen source of flowed fluctuation includes the biggish electricity of electric energy power swing such as " abandonment ", " abandoning light ", " peak regulation of power plant "
Solve hydrogen generating system, gas discharge fluctuates biggish hydrogen production system employing reforming technology, by-product hydrogen source is complicated and flowed fluctuation is biggish
Hydrogen purification system etc..
Alloy hydrogen storage system includes the hydrogen container of more filling alloy hydrogen storage materials, and every hydrogen container can pass through valve control
Hydrogen storage and output, input busbar connector with hydrogen respectively and hydrogen output busbar connector is connected to.Wherein alloy hydrogen storage material packet
Include nickel-base alloy, magnesium base alloy, rare earth element alloy etc., the common feature of the alloy hydrogen storage material be hydrogen charge and discharge rate it is fast,
Charge-discharge cycle number is high, charge and discharge pressure is normal pressure or low pressure, charge and discharge temperature are 0~50 DEG C etc., so that alloy hydrogen storage system
Charge and discharge hydrogen ability is repeated with good, energy consumption is not changed with the flow of charge and discharge hydrogen, is maintained at lower level.
The classification high-pressure hydrogen storing tank of high-pressure hydrogen storing system includes several 40MPa and 80MPa high-pressure hydrogen storing tanks, different pressures
To be connected in series between hydrogen container, it is connected in parallel between uniform pressure hydrogen container.High-pressure hydrogen storing tank type includes that I type is seamless complete
Metal hydrogen storage bottle, II type metal liner circumferential direction winding hydrogen storage bottle, type III metal liner wind hydrogen storage bottle and IV plastic liner entirely
Carbon fiber winds hydrogen storage bottle entirely.
The classification hydrogen gas compressor of high-pressure hydrogen storing system include several 0 to 40MPa and 40 to 80MPa hydrogen gas compressor.
Hydrogen gas compressor type includes reciprocating oilless (oil free) compressor and ionic liquid membrane compressor, and compression efficiency and energy consumption are with pressure
Contracting load increases and increases.
Small-scale low energy consumption hydrogen storage strategy of the invention realizes that system entirety energy consumption reduces, using the reversible charge and discharge hydrogen of low energy consumption
The alloy hydrogen storage system of gas carries out " peak load shifting " to the hydrogen flowing quantity of fluctuation, so that the main consumption in high-pressure hydrogen storing system
Energy unit --- hydrogen gas compressor, persistently keeps the output interval of high load capacity, both reduces matching fluctuating load bring dynamic
Energy loss in turn avoids running on the lower load bring low energy consumption.
1. small-scale low energy consumption hydrogen storage strategy, which is accomplished by, obtains compressor according to the power flow curve of hydrogen gas compressor
The Efficient Compression flow rate zone of efficient operation, and set the threshold flow of hydrogen gas compressor starting；2. when the hydrogen of source fluctuation
When air flow value is below or above Efficient Compression flow rate zone, filled respectively from the alloy hydrogen storage system of the reversible charge and discharge hydrogen of low energy consumption
Hydrogen release gas makes hydrogen gas compressor be maintained at the work of Efficient Compression flow rate zone as far as possible；3. when the hydrogen flowing quantity of source fluctuation is lower than
The threshold flow of compressor start, hydrogen gas compressor shutdown, the hydrogen come from hydrogen source are stored into alloy hydrogen storage system.
Small-scale low energy consumption hydrogen storage strategy of the invention passes through monitoring, simulation and analysis hydrogen source, high-pressure hydrogen storing and alloy
Hydrogen storage changes in flow rate and cumulant, it is available for the optimal alloy hydrogen storage capability of fluctuation hydrogen source low energy consumption hydrogen storage and
Hydrogen gas compressor compression horsepower and flow are the design and equipment of alloy hydrogen storage part and hydrogen gas compressor in ladder hydrogen storage system
Type selecting provides reliable data and supports.
As shown in Fig. 2, the control method of the small-scale low energy consumption ladder hydrogen storage system, comprising the following steps:
1) the Efficient Compression flow area of hydrogen gas compressor efficient operation is obtained according to the power flow curve of hydrogen gas compressor
Between (Q1, Q2), and set the threshold flow Q of hydrogen gas compressor starting0；
2) when the hydrogen stream magnitude Q of source fluctuation adds alloy hydrogen storage system charge and discharge hydrogen stream magnitude QmObtained hydrogen pressure
Contracting flow value QcIn Efficient Compression flow rate zone (Q1, Q2) when, alloy hydrogen storage system charge and discharge hydrogen stream magnitude QmIt remains unchanged；
3) when hydrogen compresses flow value QcBelow or above Efficient Compression flow rate zone (Q1,Q2) when, then enable hydrogen compression stream
Magnitude Qc=Q1(Qc<Q1) or Qc=Q2(Qc>Q2), update the alloy hydrogen storage system charge and discharge hydrogen stream of the reversible charge and discharge hydrogen of low energy consumption
Magnitude Qm(Qm=Qc- Q) so that compressor is maintained at the work of Efficient Compression flow rate zone；
4) when the hydrogen flowing quantity of source fluctuation is lower than the threshold flow Q of hydrogen gas compressor starting0When, then hydrogen gas compressor closes
Machine makes hydrogen compress flow value Qc=0, all hydrogen are deposited into alloy hydrogen storage system.
Embodiment:
Using the data of practical photovoltaic power generation, if using photovoltaic power generation-electrolytic hydrogen production as fluctuation hydrogen source, it can be to small-scale
Low energy consumption hydrogen storage process carries out numerical simulation: 1. determining the efficient of compressor efficient operation according to the power flow curve of compressor
Compression flow rate zone is (524.8,656) L3/s, and sets the threshold flow of compressor start as 131.2L3/s；2. when coming
When the value of the hydrogen flowing quantity (as shown in Figure 3a) of source fluctuation is below or above Efficient Compression flow rate zone, from the reversible charge and discharge of low energy consumption
The alloy hydrogen storage system of hydrogen fills respectively or hydrogen release gas, so that compressor is maintained at the work of Efficient Compression flow rate zone；3. when coming
The hydrogen flowing quantity of source fluctuation is lower than the threshold flow of compressor start, compressor shutdown, and all hydrogen are deposited to alloy hydrogen storage system
In.The cumulant of alloy hydrogen storage is as shown in Fig. 3 b figure in this numerical simulation operational process, initial photovoltaic power generation quantity hydrogen manufacturing in several days
It is less, from alloy hydrogen storage system to high-pressure hydrogen storing system hydrogen supply, compressor is made to keep higher working efficiency, then several days photovoltaics
Power generating and hydrogen producing amount increases, and the extra hydrogen of hydrogen source is stored to alloy hydrogen storage system.Alloy is corresponded to using compressor horsepower flow
Hydrogen storage cumulant data it can be calculated that meet this fluctuation hydrogen source hydrogen storage the specified compression flow of optimal compressor be 656L3/s,
Optimal alloy hydrogen storage system capacity may be designed as about 6000L3.One week analogue data of selection, compression hydrogen storage and alloy hydrogen storage
Flow is as shown in Fig. 3 c, 3d, and compressor is held in work in optimal compression flow rate zone, in the photovoltaic power generations hydrogen manufacturing such as night
When measuring very little, starting state, hydrogen are not stored all to alloy hydrogen storage system for compressor holding.
Claims (9)
1. a kind of small-scale low energy consumption ladder hydrogen storage system, it is characterised in that: stored up including hydrogen source, alloy hydrogen storage system and high pressure
Hydrogen system；The input terminal of Hydrogen Line is arranged in hydrogen source, and Hydrogen Line connects high-pressure hydrogen storing system, and high-pressure hydrogen storing system includes
It is classified hydrogen gas compressor and classification high-pressure hydrogen storing tank；Hydrogen Line is equipped with a branch, and setting alloy hydrogen storage system in branch road closes
The output end of golden hydrogen storage system is connected to the hydrogen gas compressor of high-pressure hydrogen storing system.
2. small-scale low energy consumption ladder hydrogen storage system according to claim 1, it is characterised in that: hydrogen source includes renewable
Electrolytic hydrogen production system, hydrogen making by natural gas reformation system and coproduct hydrogen purification system.
3. small-scale low energy consumption ladder hydrogen storage system according to claim 1, it is characterised in that: alloy hydrogen storage system includes
The hydrogen container of several filling alloy hydrogen storage materials, every hydrogen container passes through valve and hydrogen input busbar connector and hydrogen exports
Busbar connector connection.
4. small-scale low energy consumption ladder hydrogen storage system according to claim 3, it is characterised in that: alloy hydrogen storage material is nickel
Based alloy, magnesium base alloy or rare earth element alloy.
5. small-scale low energy consumption ladder hydrogen storage system according to claim 1, it is characterised in that: point of high-pressure hydrogen storing system
Grade high-pressure hydrogen storing tank includes the high-pressure hydrogen storing tank of several different pressures, is to be connected in series between different pressures hydrogen container, identical
It is to be connected in parallel between pressure hydrogen container.
6. small-scale low energy consumption ladder hydrogen storage system according to claim 5, it is characterised in that: high-pressure hydrogen storing tank type packet
Include the seamless all-metal hydrogen storage bottle of I type, the winding of II type metal liner circumferential direction hydrogen storage bottle, type III metal liner wind hydrogen storage bottle entirely and
IV plastic inner container carbon fiber winds hydrogen storage bottle entirely.
7. small-scale low energy consumption ladder hydrogen storage system according to claim 1, it is characterised in that: point of high-pressure hydrogen storing system
Grade hydrogen gas compressor includes the hydrogen gas compressor of several different pressures.
8. small-scale low energy consumption ladder hydrogen storage system according to claim 7, it is characterised in that: hydrogen gas compressor type packet
Include reciprocating oilless (oil free) compressor and ionic liquid membrane compressor.
9. a kind of control method of small-scale low energy consumption ladder hydrogen storage system as described in claim 1, it is characterised in that: including
Following steps:
1) the Efficient Compression flow rate zone (Q of hydrogen gas compressor efficient operation is obtained1, Q2), and set hydrogen gas compressor starting
Threshold flow Q0；
2) when the hydrogen stream magnitude Q of source fluctuation adds alloy hydrogen storage system charge and discharge hydrogen stream magnitude QmObtained hydrogen compression stream
Magnitude QcIn Efficient Compression flow rate zone (Q1, Q2) when, alloy hydrogen storage system charge and discharge hydrogen stream magnitude QmIt remains unchanged；
3) when hydrogen compresses flow value QcLower than Efficient Compression flow rate zone (Q1, Q2) i.e. Qc<Q1When, then enable hydrogen compress flow value
Qc=Q1；When hydrogen compresses flow value QcHigher than Efficient Compression flow rate zone (Q1, Q2) i.e. Qc>Q2When, then enable Qc=Q2；It updates and closes
Golden hydrogen storage system charge and discharge hydrogen stream magnitude Qm=Qc- Q, so that hydrogen gas compressor is maintained at the work of Efficient Compression flow rate zone；QmFor
Negative value is from hydrogen source inputting hydrogen into alloy hydrogen storage system；
4) when the hydrogen stream magnitude Q of source fluctuation is lower than the threshold flow Q of hydrogen gas compressor starting0When, then hydrogen gas compressor shuts down
Hydrogen is set to compress flow value Qc=0, all hydrogen are deposited into alloy hydrogen storage system.
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| CN110425416B (en) | 2023-08-15 |
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