CN102586797B - Water electrolysis hydrogen production method - Google Patents
Water electrolysis hydrogen production method Download PDFInfo
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- CN102586797B CN102586797B CN201210061249.4A CN201210061249A CN102586797B CN 102586797 B CN102586797 B CN 102586797B CN 201210061249 A CN201210061249 A CN 201210061249A CN 102586797 B CN102586797 B CN 102586797B
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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
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
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Abstract
The invention relates to a water electrolysis hydrogen production method, belonging to the field of water electrolysis hydrogen production. The water electrolysis hydrogen production method comprises two sets of water electrolysis hydrogen production equipment, namely No.1 hydrogen production equipment and No.2 hydrogen production equipment, wherein two block valves V1 and V2 are arranged on a hydrogen pipeline between a hydrogen production framework A1-1 and a purification framework A1-2 of the No.1 hydrogen production equipment; and two block valves V6 and V7 are arranged on a hydrogen pipeline between a hydrogen production framework A2-1 and a purification framework A2-2 of the No.2 hydrogen production equipment. According to the method, the utilization rate of system equipment is improved by modifying serial connection and parallel connection of a water electrolysis hydrogen system, the maintenance frequency and system abnormal on-off frequency are reduced, a great amount of maintenance cost is saved, the hydrogen production capacity of the system is improved, and the normal stable production of hydrogen users is ensured at the same time.
Description
Technical field:
The invention belongs to water electrolysis hydrogen producing field, be specifically related to a kind of Water electrolysis hydrogen production method.
Background technology
Hydro-electrolytic hydrogen production device comprises electrolyzer, hydrogen manufacturing framework and purifying framework.Its hydrogen manufacturing principle: water is electrolysis production hydrogen and oxygen under the effect of electrolyzer direct current, wherein KOH is as electrolytic solution, V
2o
5as catalyzer, system consumption electricity and water; The hydrogen that electrolyzer is produced and oxygen take respectively hydrogen gas segregator and the oxygen separator of hydrogen manufacturing framework to circulation alkali liquor, separated hydrogen enters purifying framework, and separated oxygen is emptying; The hydrogen purity that hydrogen manufacturing framework obtains is not high, needs, through purifying framework deoxidation, dry, after the requirement that touches the mark, to deliver to user.
The specific physical performance that hydrogen has easy leakage, easily spreads, fast 3.8 times than air diffuser; Leak 2 times for air.Especially the incident of leakage that takes place frequently under the various running environment of all kinds of valves of purifying framework, the unit processing of must stopping transport, directly causes system gas producing efficiency to decline and energy consumption (the >5.1 kwh/m that rises
3h
2).
For guaranteeing unit and periphery personnel installation security, there is hydrogen gas leakage event and must shut down as early as possible processing, because the frequent start and stop of equipment not only affect system, produce, and affect equipment life, pipeline valve screwed connection position is more prone to leakage.This is also the major issue that numerous water electrolysis hydrogen producing production units face.
Summary of the invention
For reducing the equipment start-stop frequency, must solve the purifying framework operation problem that hydrogen gas leakage the most easily occurs.
In order to address the above problem, the invention provides a kind of Water electrolysis hydrogen production method that improves operational efficiency.
The present invention includes two cover hydro-electrolytic hydrogen production devices is 1# hydrogen producer and 2# hydrogen producer, at the hydrogen manufacturing framework A1-1 of 1# hydrogen producer and the hydrogen pipeline between purifying framework A1-2, two trip valve V1 and V2 is set; At the hydrogen manufacturing framework A2-1 of 2# hydrogen producer and the hydrogen pipeline between purifying framework A2-2, two trip valve V6 and V7 are set;
Described hydrogen producer comprises silicon rectifier E1, water electrolyzer E2, hydrogen manufacturing framework and purifying framework;
In the middle of trip valve V1 and trip valve V2 with in the middle of trip valve V6 and trip valve V7, be set communicating pipe; Trip valve V4 is set on this communicating pipe; Trip valve V4 both sides add respectively exhaust-valve V3 and exhaust-valve V5 as the emptying diffusion valve in termination;
Nitrogen purge valve V8 is set in the middle of trip valve V1 and trip valve V2, nitrogen purge valve V9 is set in the middle of trip valve V6 and trip valve V7;
On oxygen/alkali lye knockout tower of each hydrogen manufacturing framework and the connecting tube between hydrogen/alkali lye knockout tower, be equipped with nitrogen purging control valve; Oxygen/alkali lye knockout tower of each hydrogen manufacturing framework is equipped with oxygen exhaust-valve;
During hydrogen producer isolated operation, trip valve V4 closes, automatic control program corresponding selection isolated operation equipment, and the hydrogen producer of isolated operation is produced hydrogen under electric tank working, hydrogen and alkali lye blending agent enter the hydrogen manufacturing framework of operation, and in hydrogen manufacturing framework, hydrogen is separated with alkali lye; Hydrogen enters the change framework of pure operation again, at hydrogen in purifying framework, through deoxidation with after being dried, becomes product hydrogen; When two hydrogen producers move simultaneously, trip valve V4 closes, and automatic control program is selected two hydrogen producers simultaneously, and the product hydrogen of two hydrogen producer productions, respectively through hydrogen manufacturing framework and purifying framework, finally converges and enters main pipeline supply rear portion user.
Trip valve V1 and the middle nitrogen purge valve V8 that arranges of trip valve V2 at 1# device for producing hydrogen, at trip valve V6 and the middle nitrogen purge valve V9 that arranges of trip valve V7 of 2# hydrogen producer, two nitrogen purge valve V8, V9 purge connecting pipeline and purifying framework while switching as two hydrogen producers.
When the isolated operation of 1# hydrogen producer, trip valve V4 closes, automatic control program corresponding selection 1# equipment.1# hydrogen producer is produced hydrogen under electric tank working, and hydrogen and alkali lye blending agent enter hydrogen manufacturing A1-1 equipment region, separated with alkali lye at this region hydrogen; Hydrogen enters purifying A1-2 equipment region again, at this region hydrogen, through deoxidation with after being dried, becomes product hydrogen.
In like manner, when the isolated operation of 2# hydrogen producer, trip valve V4 closes, automatic control program corresponding selection 2# equipment.The hydrogen that 2# hydrogen generating system is produced becomes product hydrogen through A2-1 and A2-2 equipment region.
With the matching used computer program explanation of the present invention
(1) program control mode
(2) red-tape operati program
A. before device start, computer-controlled program is all given tacit consent to " manually " state, and mode operation conditions button is " redness "; Post personnel's spot inspection is electric, instrument and mechanical means whether normal, and whether the monitoring such as water, electricity, gas shows normal;
B. post personnel at the scene or computer remote manually boot equipment (equipment starting must be consistent with the automatic control mode of plan operation), after equipment operation is normal, first carry out model selection and (once can only select a kind of operational mode, can not two or more operational modes select) simultaneously, after model selection, computer picture display format button becomes " green " from " redness ", and acquiescence manual mode becomes " green " from " redness ";
C. personnel inspection computerized control system in post has or not abnormal indication record, if there is abnormal alarm, eliminates abnormal rear preparation put into operation " automatically ";
D. post personnel select the Auto button at computer picture, and confirm, the Auto button becomes green from redness, and " manually " button becomes redness from green simultaneously, and system starts automatic operation;
If the e. facilities plan maintenance of stopping transport, first post personnel must switch to " manually " by operational mode by " automatically ", finally pass through computer remote or manual operation outaged equipment at the scene.
If running mode switching F., first post personnel must switch to " manually " by current operating state by " automatically "; Whether the pattern corresponding device that then on-the-spot confirmation is about to put into operation is opened, and normal operation, corresponding switch valve operation is put in place simultaneously, then the operational mode institute corresponding device that will exit is manually stopped; At computer, click the mode button that puts into operation subsequently, new model brings into operation, and corresponding " manually " button demonstration is green, and the mode button exiting becomes " redness " simultaneously, and its running status button is acquiescence redness; The mode of operation state finally switching being put into operation is chosen as " automatically ".
The present invention has improved equipment operating efficiency, has reduced overhaul of the equipments frequency, has improved system hydrogen production capacity, has realized that system device is independent or mutual received shipment is capable, has improved unit operation efficiency and energy consumption (the <4.6 kwh/m that declines
3h
2), for rear portion user security is normal, produces source of the gas assurance is provided simultaneously.
Accompanying drawing explanation
Fig. 1 is the hydro-electrolytic hydrogen production device structural representation of the embodiment of the present invention.
In figure, E1 represents silicon rectifier, and E2 represents water electrolyzer, and E3 represents oxygen/alkali lye and the comprehensive knockout tower of hydrogen/alkali lye, and E4 represents deoxidation tower, and E5 represents drying tower; V1～V7 represents hydrogen pipeline switching valve, and V8～V11 represents nitrogen control valve, and V12 and V13 represent oxygen exhaust-valve, and V14～V17 represents T-valve, and when needs are emptying, switch valve is " emptying " state, and gas in pipelines is discharged, can not entered rear portion pipeline; When not emptying, switch valve is " gas transmission " state, gas in pipelines flow through this valve, enter rear portion pipeline; A1-1 and A2-1 dotted line frame region representation hydrogen manufacturing framework, A1-2 and A2-2 dotted line frame region representation purifying framework; E3(H
2) expression hydrogen/alkali lye knockout tower, E3(O
2) expression oxygen/alkali lye knockout tower.
Embodiment
Embodiment: shown in Fig. 1, the hydro-electrolytic hydrogen production device of the embodiment of the present invention comprises that two cover hydro-electrolytic hydrogen production devices are 1# hydrogen producer and 2# hydrogen producer, at the hydrogen manufacturing framework (A1-1) of 1# hydrogen producer and the hydrogen pipeline between purifying framework (A1-2), valve V1 and V2 are set, as the trip valve of 1# hydrogen generating system two frameworks; At the hydrogen manufacturing framework (A2-1) of 2# hydrogen producer and the hydrogen pipeline between purifying framework (A2-2), valve V6 and V7 are set, as the cut-out of 2# hydrogen generating system two frameworks.
Described 1# hydrogen producer, 2# hydrogen producer include silicon rectifier (E1), water electrolyzer (E2), hydrogen manufacturing framework (A1-1, A2-1) and purifying framework (A1-2, A2-2);
In the middle of trip valve V1 and trip valve V2 with in the middle of trip valve V6 and trip valve V7, be set communicating pipe, the principal passage cutting off as two complete equipments; Trip valve V4 is set on this communicating pipe as the cutting-off controlling valve of 1# and two hydrogen producers of 2#.Trip valve V4 both sides add respectively exhaust-valve V3 and exhaust-valve V5 as the emptying diffusion valve in termination, get rid of defective hydrogen in pipeline when the system of being convenient to is switched.
Trip valve V1 and the middle nitrogen purge valve V8 that arranges of trip valve V2 at 1# device for producing hydrogen, at trip valve V6 and the middle nitrogen purge valve V9 that arranges of trip valve V7 of 2# hydrogen producer, two nitrogen purge valve V8, V9 purge connecting pipeline and purifying framework while switching as two hydrogen producers.
Oxygen/alkali lye knockout tower E3(O at hydrogen manufacturing framework A1-1
2) and hydrogen/alkali lye knockout tower E3(H
2) between connecting tube be provided with nitrogen purging control valve V10; Oxygen/alkali lye knockout tower E3(O at hydrogen manufacturing framework A2-1
2) and hydrogen/alkali lye knockout tower E3(H
2) between connecting tube be provided with nitrogen purging control valve V11; Oxygen/alkali lye knockout tower E3(O at hydrogen manufacturing framework A1-1
2) be provided with oxygen exhaust-valve V12; Oxygen/alkali lye knockout tower E3(O at hydrogen manufacturing framework A2-1
2) be provided with oxygen exhaust-valve V13.
Operation:
(1), when preference pattern one (isolated operation of 1# hydrogen producer), trip valve V4 closes, automatic control program corresponding selection 1# equipment.1# hydrogen producer is produced hydrogen under electric tank working, and hydrogen and alkali lye blending agent enter hydrogen manufacturing A1-1 equipment region, separated with alkali lye at this region hydrogen; Hydrogen enters purifying A1-2 equipment region again, at this region hydrogen, through deoxidation with after being dried, becomes product hydrogen.
(2), when preference pattern two (isolated operation of 2# hydrogen producer), trip valve V4 closes, automatic control program corresponding selection 2# equipment.The hydrogen that 2# hydrogen generating system is produced becomes product hydrogen through A2-1 and A2-2 equipment region.
(3) when preference pattern three (1# and 2# hydrogen producer move simultaneously), trip valve V4 closes, and automatic control program is selected 1# hydrogen producer and 2# hydrogen producer simultaneously.The product hydrogen that 1# hydrogen producer and 2# hydrogen producer are produced, respectively through hydrogen manufacturing and purifying region, finally converges and enters main pipeline supply rear portion user.
(4) preference pattern four (1# hydrogen producer hydrogen manufacturing framework A1-1 and 2# hydrogen producer purifying framework A2-2 combined running when 1# hydrogen producer purifying framework in service (A1-2) fault, 2# hydrogen producer are standby, 1# equipment purifying framework A1-2 and 2# equipment hydrogen manufacturing framework A2-1 exit during this time), operation steps is as follows:
A. opening controlling valve V9, nitrogen enters;
B. open trip valve V5, nitrogen replacement 2# equipment is to the connecting pipeline of trip valve V4, and in pipeline, air is discharged by cutting off V5 by nitrogen replacement, detects trip valve V5 oxygen content gas, closes V5 after qualified;
C. open trip valve V7, nitrogen replacement 2# purifying framework A2-2.The air of 2# purifying framework A2-2 by nitrogen replacement after through emptying the emitting of T-valve (V15), detect the qualified rear T-valve of its oxygen level and automatically close, last closed control valve V9.2# purifying framework A2-2 nitrogen replacement air finishes;
D. slowly open trip valve V4, the hydrogen of 1# hydrogen producer enters 2# hydrogen producer through trip valve V4;
E. whether the purifying framework A2-2 of 2# hydrogen producer automatically to detect hydrogen quality qualified, when defective, hydrogen is by emptying the emitting of T-valve (V15), when qualified, T-valve turns to eligible state, and product hydrogen to rear portion pipeline, is supplied with lower operation through T-valve.Field apparatus and instrument normal operation that pattern (four) is corresponding
F. preference pattern (four) on computers, stable rear switching " automatically " operation under " manually " state.
(5) preference pattern five (2# hydrogen producer hydrogen manufacturing framework A2-1 and 1# hydrogen producer purifying framework A1-2 combined running when the operating hydrogen manufacturing framework of 1# hydrogen producer A1-1 fault, 2# hydrogen producer are standby, 1# equipment hydrogen manufacturing framework A1-1 and 2# equipment purifying framework A2-2 exit during this time), operation sequential steps is as follows:
A.1# hydrogen producer stops producing hydrogen, and A1-1 is out of service for hydrogen manufacturing framework;
B. open control valve V11, nitrogen is replaced air in the hydrogen manufacturing framework A2-1 of 2# hydrogen producer, and defective nitrogen is discharged through T-valve (V17); Detect T-valve and discharge the qualified rear closed control valve V11 of gas oxygen level;
C. open control valve V9, nitrogen is replaced to air in trip valve V4 pipeline 2# hydrogen producer, and trip valve V5 opens exhaust and detects oxygen level, closes nitrogen after qualified;
D. open trip valve V6(trip valve V7 and keep closing condition);
E. 2# hydrogen producer starts to produce hydrogen.Whether 2# hydrogen manufacturing framework A2-1 detects hydrogen automatically qualified, if hydrogen is defective emptying by three-way control valve (V17), if qualified rear hydrogen arrives before communicating pipe trip valve V4 through trip valve V6;
F. when pressure reaches 0.5Mpa, open trip valve V4, hydrogen enters the purifying framework A1-2 of 1# hydrogen producer.
G. when the purifying framework A1-2 of 1# hydrogen producer hydrogen pressure reach 0.8Mpa when above system automatically to subsequent process air feed.Field apparatus and instrument normal operation that pattern (five) is corresponding.
H. preference pattern (five) on computers, stable rear switching " automatically " operation under " manually " state.
(6) preference pattern five (2# hydrogen producer hydrogen manufacturing framework A2-1 and 1# hydrogen producer purifying framework A1-2 combined running when the operating purifying framework of 2# hydrogen producer (A2-2) fault, 1# hydrogen producer are standby, 1# equipment hydrogen manufacturing framework A1-1 and 2# equipment purifying framework A2-2 exit during this time), operation steps is as follows:
A. opening controlling valve V8, nitrogen enters;
B. open trip valve V3, nitrogen replacement 1# equipment is to the connecting pipeline of trip valve V4, and in pipeline, air is discharged by cutting off V3 by nitrogen replacement, detects trip valve V3 oxygen content gas, closes V3 after qualified;
C. open trip valve V2, nitrogen replacement 1# purifying framework A1-2.The air of 1# purifying framework A1-2 by nitrogen replacement after through emptying the emitting of T-valve (V14), detect the qualified rear T-valve of its oxygen level and automatically close, last closed control valve V8.1# purifying framework A1-2 nitrogen replacement air finishes;
D. slowly open trip valve V4, the hydrogen of 2# hydrogen producer enters 1# hydrogen producer through trip valve V4;
E. whether the purifying framework A1-2 of 1# hydrogen producer automatically to detect hydrogen quality qualified, when defective, hydrogen is by emptying the emitting of T-valve (V14), when qualified, T-valve turns to eligible state, and product hydrogen to rear portion pipeline, is supplied with lower operation through T-valve.Field apparatus and instrument normal operation that pattern (five) is corresponding
F. preference pattern (five) on computers, stable rear switching " automatically " operation under " manually " state.
(7) preference pattern four (1# hydrogen producer hydrogen manufacturing framework A1-1 and 2# hydrogen producer purifying framework A2-2 combined running when the operating hydrogen manufacturing framework of 2# hydrogen producer A2-1 fault, 1# hydrogen producer are standby, 1# equipment purifying framework A1-2 and 2# equipment hydrogen manufacturing framework A2-1 exit during this time), operation sequential steps is as follows:
A.2# hydrogen producer stops producing hydrogen, and A2-1 is out of service for hydrogen manufacturing framework;
B. open control valve V10, nitrogen is replaced air in the hydrogen manufacturing framework A1-1 of 1# hydrogen producer, through T-valve (V16) combustion gas; Automatically detect the qualified rear substitution of T-valve discharge gas oxygen level and finish closed control valve V10;
C. open control valve V8, nitrogen is replaced to air in trip valve V4 pipeline 1# hydrogen producer, and trip valve V3 opens exhaust and detects oxygen level, closes nitrogen after qualified;
D. close trip valve V8, open trip valve V1;
E. 1# hydrogen producer starts to produce hydrogen.Whether 1# hydrogen manufacturing framework A1-1 detects hydrogen automatically qualified, if hydrogen is defective emptying by T-valve (V16), if qualified rear hydrogen arrives before communicating pipe trip valve V4 through trip valve V1;
F. when pressure reaches 0.5Mpa, open trip valve V4, hydrogen enters the purifying framework A2-2 of 2# hydrogen producer.
G. when the purifying framework A2-2 of 2# hydrogen producer hydrogen pressure reach 0.8Mpa when above system automatically to subsequent process air feed.Field apparatus and instrument normal operation that pattern (four) is corresponding;
H. preference pattern (four) on computers, stable rear switching " automatically " operation under " manually " state.
Claims (5)
1. a Water electrolysis hydrogen production method, is characterized in that comprising that two cover hydro-electrolytic hydrogen production devices are 1# hydrogen producer and 2# hydrogen producer, at the hydrogen manufacturing framework A1-1 of 1# hydrogen producer and the hydrogen pipeline between purifying framework A1-2, two trip valve V1 and V2 is set; At the hydrogen manufacturing framework A2-1 of 2# hydrogen producer and the hydrogen pipeline between purifying framework A2-2, two trip valve V6 and V7 are set;
Described hydrogen producer comprises silicon rectifier E1, water electrolyzer E2, hydrogen manufacturing framework and purifying framework;
In the middle of trip valve V1 and trip valve V2 with in the middle of trip valve V6 and trip valve V7, be set communicating pipe; Trip valve V4 is set on this communicating pipe; Trip valve V4 both sides add respectively exhaust-valve V3 and exhaust-valve V5 as the emptying diffusion valve in termination;
Nitrogen purge valve V8 is set in the middle of trip valve V1 and trip valve V2, nitrogen purge valve V9 is set in the middle of trip valve V6 and trip valve V7;
On oxygen/alkali lye knockout tower of each hydrogen manufacturing framework and the connecting tube between hydrogen/alkali lye knockout tower, be equipped with nitrogen purging control valve; Oxygen/alkali lye knockout tower of each hydrogen manufacturing framework is equipped with oxygen exhaust-valve; After hydrogen/alkali lye knockout tower of each hydrogen manufacturing framework, be equipped with threeway exhaust-valve;
During hydrogen producer isolated operation, trip valve V4 closes, automatic control program corresponding selection isolated operation equipment, and the hydrogen producer of isolated operation is produced hydrogen under electric tank working, hydrogen and alkali lye blending agent enter the hydrogen manufacturing framework of operation, and in hydrogen manufacturing framework, hydrogen is separated with alkali lye; Hydrogen enters purifying framework again, at hydrogen in purifying framework, through deoxidation with after being dried, becomes product hydrogen; When two hydrogen producers move simultaneously, trip valve V4 closes, and automatic control program is selected two hydrogen producers simultaneously, and the product hydrogen of two hydrogen producer productions, respectively through hydrogen manufacturing framework and purifying framework, finally converges and enters main pipeline supply rear portion user.
2. a kind of Water electrolysis hydrogen production method according to claim 1, is characterized in that described hydrogen producer isolated operation, and, when 1# hydrogen producer purifying framework in service A1-2 fault, 2# hydrogen producer are standby, operation steps is as follows:
A. opening controlling valve V9, nitrogen enters;
B. open trip valve V5, nitrogen replacement 2# equipment is to the connecting pipeline of trip valve V4, and in pipeline, air is discharged by cutting off V5 by nitrogen replacement, detects trip valve V5 oxygen content gas, closes V5 after qualified;
C. open trip valve V7, nitrogen replacement 2# purifying framework A2-2;
The air of 2# purifying framework A2-2 is emitted through T-valve V15 is emptying after by nitrogen replacement, detects the qualified rear T-valve of its oxygen level and automatically closes, last closed control valve V9;
2# purifying framework A2-2 nitrogen replacement air finishes;
D. slowly open trip valve V4, the hydrogen of 1# hydrogen producer enters 2# hydrogen producer through trip valve V4;
E. whether the purifying framework A2-2 of 2# hydrogen producer automatically to detect hydrogen quality qualified, and when defective, hydrogen is emitted by T-valve V15 is emptying, and when qualified, T-valve turns to eligible state, and product hydrogen to rear portion pipeline, is supplied with lower operation through T-valve;
Field apparatus and instrument normal operation that pattern (four) is corresponding;
F. preference pattern (four) on computers, stable rear switching " automatically " operation under " manually " state.
3. a kind of Water electrolysis hydrogen production method according to claim 1, is characterized in that described hydrogen producer isolated operation, and, when the operating hydrogen manufacturing framework of 1# hydrogen producer A1-1 fault, 2# equipment sparing, operation sequential steps is as follows:
A.1# hydrogen producer stops producing hydrogen, and A1-1 is out of service for hydrogen manufacturing framework;
B. open control valve V11, nitrogen is replaced air in the hydrogen manufacturing framework A2-1 of 2# hydrogen producer, and defective nitrogen is discharged through T-valve V17; Detect T-valve and discharge the qualified rear closed control valve V11 of gas oxygen level;
C. open control valve V9, nitrogen is replaced to air in trip valve V4 pipeline 2# hydrogen producer, and trip valve V5 opens exhaust and detects oxygen level, closes nitrogen after qualified;
D. open trip valve V6, trip valve V7 keeps closing condition;
E. 2# hydrogen producer starts to produce hydrogen;
Whether 2# hydrogen manufacturing framework A2-1 detects hydrogen automatically qualified, if hydrogen is defective emptying by three-way control valve V17, if qualified rear hydrogen arrives before communicating pipe trip valve V4 through trip valve V6;
F. when pressure reaches 0.5MPa, open trip valve V4, hydrogen enters the purifying framework A1-2 of 1# hydrogen producer;
G. when the purifying framework A1-2 of 1# hydrogen producer hydrogen pressure reach 0.8MPa when above system automatically to subsequent process air feed;
Field apparatus and instrument normal operation that pattern (five) is corresponding,
H. preference pattern (five) on computers, stable rear switching " automatically " operation under " manually " state.
4. a kind of Water electrolysis hydrogen production method according to claim 1, is characterized in that described hydrogen producer isolated operation, and, when the operating purifying framework of 2# hydrogen producer A2-2 fault, 1# equipment sparing, operation steps is as follows:
A. opening controlling valve V8, nitrogen enters;
B. open trip valve V3, nitrogen replacement 1# equipment is to the connecting pipeline of trip valve V4, and in pipeline, air is discharged by cutting off V3 by nitrogen replacement, detects trip valve V3 oxygen content gas, closes V3 after qualified;
C. open trip valve V2, nitrogen replacement 1# purifying framework A1-2;
The air of 1# purifying framework A1-2 is emitted through T-valve V14 is emptying after by nitrogen replacement, detects the qualified rear T-valve of its oxygen level and automatically closes, last closed control valve V8;
1# purifying framework A1-2 nitrogen replacement air finishes;
D. slowly open trip valve V4, the hydrogen of 2# hydrogen producer enters 1# hydrogen producer through trip valve V4;
E. whether the purifying framework A1-2 of 1# hydrogen producer automatically to detect hydrogen quality qualified, and when defective, hydrogen is emitted by T-valve V14 is emptying, and when qualified, T-valve turns to eligible state, and product hydrogen to rear portion pipeline, is supplied with lower operation through T-valve;
Field apparatus and instrument normal operation that pattern (five) is corresponding,
F. preference pattern (five) on computers, stable rear switching " automatically " operation under " manually " state.
5. a kind of Water electrolysis hydrogen production method according to claim 1, is characterized in that described hydrogen producer isolated operation, and, when the operating hydrogen manufacturing framework of 2# hydrogen producer A2-1 fault, 1# equipment sparing, operation sequential steps is as follows:
A.2# hydrogen producer stops producing hydrogen, and A2-1 is out of service for hydrogen manufacturing framework;
B. open control valve V10, nitrogen is replaced air in the hydrogen manufacturing framework A1-1 of 1# hydrogen producer, through T-valve V16 combustion gas; Automatically detect the qualified rear substitution of T-valve discharge gas oxygen level and finish closed control valve V10;
C. open control valve V8, nitrogen is replaced to air in trip valve V4 pipeline 1# hydrogen producer, and trip valve V3 opens exhaust and detects oxygen level, closes nitrogen after qualified;
D. close trip valve V8, open trip valve V1;
E. 1# hydrogen producer starts to produce hydrogen;
Whether 1# hydrogen manufacturing framework A1-1 detects hydrogen automatically qualified, if hydrogen is defective emptying by T-valve V16, if qualified rear hydrogen arrives before communicating pipe trip valve V4 through trip valve V1;
F. when pressure reaches 0.5MPa, open trip valve V4, hydrogen enters the purifying framework A2-2 of 2# hydrogen producer;
G. when the purifying framework A2-2 of 2# hydrogen producer hydrogen pressure reach 0.8MPa when above system automatically to subsequent process air feed;
Field apparatus and instrument normal operation that pattern (four) is corresponding,
H. preference pattern (four) on computers, stable rear switching " automatically " operation under " manually " state.
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| DE102014108085A1 (en) * | 2014-06-06 | 2015-12-17 | Sunfire Gmbh | electrolysis process |
| CN108265310A (en) * | 2017-12-26 | 2018-07-10 | 渤海造船厂集团有限公司 | A kind of water electrolysis hydrogen producing gas and oxygen unit safety medicine system |
| CN111364053B (en) * | 2020-04-22 | 2021-06-11 | 阳光电源股份有限公司 | Multichannel alkaline hydrogen production system |
| PL434074A1 (en) | 2020-05-26 | 2021-11-29 | New Energy Transfer Spółka Z Ograniczoną Odpowiedzialnością | Hydrogen production device and hydrogen production method using this device |
| CN111996542B (en) * | 2020-08-27 | 2021-12-10 | 阳光电源股份有限公司 | Hydrogen production system and control method thereof |
| CN114182295B (en) * | 2021-11-19 | 2023-09-29 | 中国华能集团清洁能源技术研究院有限公司 | Automatic nitrogen replacement device and method for electrolytic water hydrogen production system |
| CN114086199B (en) * | 2021-12-18 | 2022-11-29 | 武汉理工大学 | PEM (proton exchange membrane) electrolytic hydrogen production device convenient to overhaul |
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| CN102586797A (en) | 2012-07-18 |
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