CN112299370A - High-safety sodium borohydride hydrogen production device and method - Google Patents
High-safety sodium borohydride hydrogen production device and method Download PDFInfo
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- CN112299370A CN112299370A CN202011350258.6A CN202011350258A CN112299370A CN 112299370 A CN112299370 A CN 112299370A CN 202011350258 A CN202011350258 A CN 202011350258A CN 112299370 A CN112299370 A CN 112299370A
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/06—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents
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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
Abstract
The invention discloses a high-safety hydrogen production device and a high-safety hydrogen production method by sodium borohydride, and the device comprises a water tank, a hydrogen production agent reaction liquid stirring device, a catalyst reaction liquid stirring device, a hydrogen production agent reaction liquid metering pump, a catalyst reaction liquid metering pump, a reaction kettle, a radiator, a water-gas separator, a flame arrester and a hydrogen outlet electromagnetic valve; the water tank is connected with a hydrogen production agent reaction liquid stirring device and a catalyst reaction liquid stirring device respectively, the hydrogen production agent reaction liquid stirring device is connected with the reaction kettle through a hydrogen production agent reaction liquid metering pump, the catalyst reaction liquid stirring device is connected with the reaction kettle through a catalyst reaction liquid metering pump, a hydrogen outlet is formed in the top end of the reaction kettle, and the hydrogen outlet in the top end of the reaction kettle is sequentially connected with a radiator, a water-gas separator, a flame arrester and a hydrogen outlet electromagnetic valve. The hydrogen production device can obviously reduce the risk of air entering and improve the safety of system operation and storage.
Description
Technical Field
The invention relates to a fuel cell technology, in particular to a high-safety hydrogen production device by sodium borohydride and a method thereof.
Background
With the development and application of hydrogen fuel cell technology, especially in the recent public request of energy law in China, hydrogen energy has been proposed as an energy source, and thus it is seen that the source of hydrogen gas is becoming more and more important. Hydrogen can be obtained by a plurality of hydrogen production technologies, and sodium borohydride hydrogen production is a common hydrogen production technology and has the characteristics of high efficiency, stability, easiness in hydrogen production, low cost, high purity and the like, so that the sodium borohydride hydrogen production technology is widely regarded. The safety is a very key problem in the technical process of hydrogen production by sodium borohydride, the sodium borohydride hydrogen production system is easy to exist or mix a certain amount of air in the processes of feeding in a hydrogen production period and storing for a long time particularly when hydrogen is produced for the first time, and has great use safety hazards. Therefore, a safe, convenient, reliable and low-cost system for producing hydrogen from sodium borohydride needs to be designed and developed.
Disclosure of Invention
The invention aims to solve the technical problem of providing a high-safety device and a high-safety method for preparing hydrogen from sodium borohydride aiming at the defects in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: a high-safety hydrogen production device from sodium borohydride comprises:
the device comprises a water tank, a hydrogen production agent reaction liquid stirring device, a catalyst reaction liquid stirring device, a hydrogen production agent reaction liquid metering pump, a catalyst reaction liquid metering pump, a reaction kettle, a radiator, a water-gas separator, a flame arrester and a hydrogen outlet electromagnetic valve;
the water tank is respectively connected with the hydrogen production agent reaction liquid stirring device and the catalyst reaction liquid stirring device, the hydrogen production agent reaction liquid stirring device is connected with the reaction kettle through the hydrogen production agent reaction liquid metering pump, the catalyst reaction liquid stirring device is connected with the reaction kettle through the catalyst reaction liquid metering pump, the top end of the reaction kettle is provided with a hydrogen outlet, and the hydrogen outlet at the top end of the reaction kettle is sequentially connected with a radiator, a water-gas separator, a flame arrester and a hydrogen outlet electromagnetic valve;
the hydrogen production agent reaction liquid stirring device comprises a hydrogen production agent water pump, a hydrogen production agent electromagnetic valve and a hydrogen production agent stirrer which are sequentially connected;
the catalyst reaction liquid stirring device comprises a catalyst water pump, a catalyst electromagnetic valve and a catalyst stirrer which are connected in sequence.
According to the scheme, a liquid outlet for discharging residual liquid after reaction is formed in the bottom of the reaction kettle.
According to the scheme, a pressure sensor is arranged at a hydrogen outlet at the top end of the reaction kettle.
According to the above scheme, reation kettle top hydrogen outlet still is equipped with the row hydrogen pipeline, be equipped with pressure release solenoid valve, the row hydrogen check valve that is used for initiatively discharging hydrogen on the row hydrogen pipeline in proper order and row hydrogen spark arrester, still be equipped with the mechanical safety relief valve that row hydrogen spark arrester is used for passive discharge between reation kettle top hydrogen outlet and the row hydrogen spark arrester, mechanical safety relief valve one end links to each other with reation kettle, and the other end links to each other with the spark arrester and installs on row hydrogen pipeline.
According to the scheme, the pressure-bearing pressure range of the reaction kettle is 8bar to 20bar, the capacity range is 5L to 100L, two liquid inlets are formed in the top of the reaction kettle and are respectively connected with a hydrogen production agent reaction liquid metering pump and a catalyst agent reaction liquid metering pump, one hydrogen outlet is formed, and a liquid outlet is formed in the bottom of the reaction kettle.
According to the scheme, the hydrogen production agent reaction liquid metering pump and the catalyst agent reaction liquid metering pump are metering pumps with one-way functions.
According to the scheme, the high-safety hydrogen production device from sodium borohydride further comprises a hydrogen monitor for monitoring the hydrogen concentration and an audible and visual alarm connected with the hydrogen monitor.
A high-safety hydrogen production method by using sodium borohydride comprises the following steps:
1) detecting the air tightness of the device, introducing nitrogen with certain pressure from a liquid outlet to perform nitrogen purging operation, wherein the nitrogen pressure ranges from 0.3bar to 3bar, and discharging air in the reaction kettle and a pipeline from a hydrogen outlet under the action of the nitrogen; after purging is finished, closing the waste liquid electromagnetic valve and the hydrogen outlet electromagnetic valve, stopping introducing nitrogen and removing nitrogen, setting the opening pressure range of the check valve to be 0.1bar to 1bar under the action of the check valve, and safely discharging when the gas pressure in the reaction kettle and the pipeline exceeds the opening pressure of the check valve in the positive direction, wherein reverse air cannot enter the reaction kettle and the pipeline; and the reaction kettle and the pipeline are in a positive pressure nitrogen state, so that the purity of the produced hydrogen is guaranteed, the air content is reduced to the maximum extent, and the system safety is improved.
2) Respectively adding a certain amount of hydrogen production agent and a certain amount of catalyst into the top ends of the hydrogen production agent stirrer and the catalyst stirrer through feed openings, opening a hydrogen production agent electromagnetic valve and a catalyst electromagnetic valve, starting a water pump to pump water into the stirrer, simultaneously starting a stirring motor, and closing the hydrogen production agent electromagnetic valve, the catalyst electromagnetic valve and the water pump after uniform mixing;
3) starting a metering pump to pump the reaction liquid into the reaction kettle, wherein a waste liquid electromagnetic valve and a pressure relief electromagnetic valve are in a closed state when working, a hydrogen outlet electromagnetic valve is in an open state, and the generated hydrogen passes through a hydrogen outlet at the top end of the reaction kettle and sequentially passes through a radiator, a water-gas separator, a flame arrester, a hydrogen outlet electromagnetic valve and a hydrogen outlet one-way valve to reach the hydrogen outlet;
4) when the hydrogen production cycle is finished, a hydrogen outlet electromagnetic valve is closed, a waste liquid electromagnetic valve is opened, residual liquid after reaction is discharged through a waste liquid port, the reaction kettle is cleaned simultaneously according to needs, a certain amount of water is injected into the reaction kettle under the action of a water pump and a metering pump, the waste liquid electromagnetic valve is discharged through the waste liquid port after cleaning, the waste liquid electromagnetic valve is closed immediately after liquid is discharged, and after the system is completely stopped, the pressure relief electromagnetic valve is in a normally open state;
5) the hydrogen production process is provided with safety alarm logic, the states of the hydrogen concentration and the working pressure of each pressure sensor are monitored on line, the safety alarm information is automatically graded, when the hydrogen concentration and the working pressure of each pressure sensor are close to the safety alarm value, alarm information is prompted on a display screen, meanwhile, an audible and visual alarm is automatically started, if the alarm state deteriorates and reaches the safety alarm value, the automatic shutdown logic is started, the pumping of reaction liquid is stopped, and meanwhile, a hydrogen discharge pressure valve is opened to discharge the pressure and discharge the hydrogen.
The invention has the following beneficial effects:
1) by combining the one-way characteristics of the metering pump and the one-way valve, the reaction kettle adopts the scheme of micro-positive pressure gas storage state in the long-time storage process after the nitrogen purging and hydrogen production periods are finished, a purification device and the like are not needed, the risk of air entering can be obviously reduced, and the safety of system operation and storage is improved.
2) The safety guarantee is further provided through double protection of the adjustable opening of the hydrogen discharge pressure valve and the mechanical safety pressure release valve, sound-light alarm grading treatment and automatic shutdown logic.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
in the figure: 1-water tank, 2-hydrogen production agent water pump, 3-catalyst water pump, 4-hydrogen production agent electromagnetic valve, 5-catalyst electromagnetic valve, 6-hydrogen production agent stirrer, 7-catalyst stirrer, 8-temperature sensor, 9-stirring motor, 10-charging opening, 11-liquid level sensor, 12-hydrogen production agent metering pump, 13-catalyst metering pump, 14-reaction kettle, 15-waste liquid electromagnetic valve, 16-pressure sensor, 17-radiator, 18-water-gas separator, 19-water discharge normally open electromagnetic valve, 20-hydrogen discharge flame arrester, 21-hydrogen discharge electromagnetic valve, 22-hydrogen discharge one-way valve, 23-pressure discharge electromagnetic valve, 24-hydrogen discharge one-way valve, 25-mechanical safety relief valve, 26-hydrogen discharge flame arrester, pressure relief valve, 27-system controller, 28-hydrogen monitor, 29-display and 30-audible and visual alarm.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, a high-safety sodium borohydride hydrogen production system comprises a water tank 1, a hydrogen production agent water pump 2, a catalyst water pump 3, a hydrogen production agent electromagnetic valve 4, a catalyst electromagnetic valve 5, a hydrogen production agent stirrer 6, a stirring motor 9, a liquid level meter 11, a hydrogen production agent metering pump 12, a reaction kettle 14, a radiator 17, a pressure sensor 16, a water-gas separator 18, a hydrogen outlet flame arrester 20, a hydrogen outlet one-way valve 22, a mechanical safety relief valve 25, a system controller 27, a hydrogen monitor 28 and the like;
the hydrogen production agent water pump 2, the hydrogen production agent electromagnetic valve 4 and the hydrogen production agent stirrer 6 which are connected in sequence form a hydrogen production agent reaction liquid stirring device;
the catalyst water pump 3, the catalyst electromagnetic valve 5 and the catalyst stirrer 7 which are connected in sequence form a catalyst reaction liquid stirring device;
the water tank 1 is respectively connected with a hydrogen production agent reaction liquid stirring device and a catalyst reaction liquid stirring device, the hydrogen production agent reaction liquid stirring device is connected with a reaction kettle 14 through a hydrogen production agent reaction liquid metering pump 12, the catalyst reaction liquid stirring device is connected with the reaction kettle 14 through a catalyst reaction liquid metering pump 13, the top end of the reaction kettle 14 is provided with a hydrogen outlet, and the hydrogen outlet at the top end of the reaction kettle is sequentially connected with a radiator 17, a water-gas separator 18, a flame arrester 20, a hydrogen outlet electromagnetic valve 21 and a hydrogen outlet one-way valve 22;
the reaction kettle top hydrogen outlet still is equipped with the row hydrogen pipeline, be equipped with pressure release solenoid valve, the exhaust check valve that is used for the initiative hydrogen discharging on the row hydrogen pipeline in proper order and row hydrogen spark arrester, still be equipped with the mechanical safety relief valve that the exhaust hydrogen spark arrester is used for passive hydrogen discharging between reaction kettle top hydrogen outlet and the exhaust hydrogen spark arrester, mechanical safety relief valve one end links to each other with reation kettle, and the other end links to each other with the spark arrester and installs on the row hydrogen pipeline. The bottom of the reaction kettle is provided with a liquid outlet for discharging residual liquid after reaction. A hydrogen outlet at the top end of the reaction kettle is provided with a pressure sensor.
The high-safety sodium borohydride hydrogen production device further comprises a hydrogen monitor connected with the system controller 27 and used for monitoring the hydrogen concentration and an audible and visual alarm connected with the hydrogen monitor, and the system controller 27 further monitors the working pressure state of each pressure sensor.
The system adopts the technical scheme that a hydrogen production agent and a catalyst are respectively stirred and mixed in a hydrogen production agent stirrer 6 and a catalyst stirrer 7, and are injected into a reaction kettle 14 for hydrogen production through a hydrogen production agent metering pump 12 and a catalyst metering pump 13 after being uniformly dissolved, and the system has the functions of nitrogen protection, overpressure protection, hydrogen production suspension at any time, automatic hydrogen production, automatic cleaning, real-time monitoring protection and the like. The hydrogen production system has the characteristics of safety, simple operation, reliability and the like.
Further, a certain amount of hydrogen production agent and a certain amount of catalyst are respectively added to the top ends of the hydrogen production agent stirrer 6 and the catalyst stirrer 7 through different feed inlets 10, a hydrogen production agent electromagnetic valve 4 and a catalyst electromagnetic valve 5 are opened, a hydrogen production agent water pump 2 and a catalyst water pump 3 are started to pump water into the stirrer, a stirring motor 9 is started simultaneously, the hydrogen production agent electromagnetic valve 4, the catalyst electromagnetic valve 5 and the water pump are closed after uniform mixing, a hydrogen production agent metering pump 12 and a catalyst metering pump 13 are started to pump a reaction liquid into a reaction kettle 14, a waste liquid electromagnetic valve 15 and a pressure relief electromagnetic valve 23 are closed when working, a hydrogen outlet electromagnetic valve 21 is opened, and generated hydrogen sequentially passes through a radiator 17, a water-gas separator 18, a flame arrester 20, a hydrogen outlet electromagnetic valve 21 and a hydrogen outlet one-way valve 22 from the top end of the reaction kettle.
After the hydrogen production system is assembled, the air tightness of the connection positions of all relevant devices and pipelines is detected to be good. The hydrogen production agent metering pump 12, the catalyst metering pump 13, the reaction kettle 14 and the mechanical safety pressure relief valve 25 can bear pressure, and the pressure bearing pressure is 4bar higher than the working pressure of the hydrogen production system.
The pressure-bearing pressure of the reaction kettle is 12bar, the capacity is 30L, two liquid inlets are arranged at the top of the reaction kettle and are respectively connected with a metering pump, and a hydrogen outlet is arranged. The bottom of the device is provided with a liquid outlet.
The hydrogen production agent reaction liquid metering pump and the catalyst agent reaction liquid metering pump are metering pumps with a one-way function, the reaction solution can be pumped into the reaction kettle in a forward direction, and hydrogen generated in the reaction kettle 14 cannot reversely flow out of the metering pumps. The pressure bearing pressure of the metering pump is 8 bar. The speed of the metering pump is manually adjusted to a fixed speed, and the speed is adjustable. And manually adjusting the hydrogen production rate to be calibrated to the hydrogen production rate of about 10L/min according to the required hydrogen rate.
The mechanical safety relief valve 25 is opened at a pressure of 7bar, one end of the mechanical safety relief valve is connected with the reaction kettle 14, and the other end of the mechanical safety relief valve is connected with the flame arrester 26 and is arranged on a hydrogen discharge pipeline, so that the pressure relief safety can be improved.
The pressure relief solenoid valve 23 is a normally open type solenoid valve, and is closed after being energized and is opened after being de-energized. On the other hand, the working pressure in the reaction kettle 14 is monitored through the pressure sensor 16, when the pressure in the reaction kettle 14 exceeds the set working pressure of 4bar, the hydrogen production agent metering pump 12 and the catalyst metering pump 13 stop working under the control of the system controller PLC27, and the pressure relief electromagnetic valve 23 is opened, the pressure value range is opened to 4bar, and primary pressure relief protection is carried out; if the pressure can not be released in time or the device fails, the opening of the secondary mechanical safety relief valve 25 can be triggered to achieve the purpose of pressure release protection. The pressure relief valve has the characteristics of adjustable pressure relief opening pressure and graded safe pressure relief.
A high-safety hydrogen production method by using sodium borohydride comprises the following steps
Before the hydrogen production action, 0.3bar of nitrogen can be introduced from the liquid outlet to carry out nitrogen purging operation, and air in the reaction kettle 14 and the pipeline is discharged from the hydrogen outlet under the action of the nitrogen. And after the purging is finished, closing the waste liquid electromagnetic valve 15 and the hydrogen outlet electromagnetic valve 21, stopping introducing the nitrogen and removing the nitrogen. Under the action of the check valve 22 and the check valve 24, the opening pressure of the check valve is 0.1bar, when the gas pressure in the reaction kettle 14 and the pipeline exceeds the opening pressure of the check valve in the positive direction, the gas is safely discharged, and the reverse air cannot enter the reaction kettle 14 and the pipeline. The reaction kettle 14 and the pipeline are in a positive pressure nitrogen state, so that the purity of the hydrogen produced in the hydrogen production process is guaranteed, the air content is reduced to the maximum extent, and the system safety is improved.
The system controller adopts an industrial PLC (programmable logic controller) 27, and the working states of all devices are respectively and actively controlled according to different execution function requirements, so that the stability and the reliability are higher.
The display 29 connected with the system controller is a touch man-machine interaction type display, can select different functional modules for hydrogen production, cleaning, pausing, stopping and the like, automatically executes different control logics, can display the state of key parameters on line and display related information for warning abnormity prompt.
The system is provided with safety alarm logic, monitors the state of key parameters (hydrogen concentration, working pressure and the like) on line, and automatically processes safety alarm information in a grading way. When the key parameter value is close to the safe alarm value, the audible and visual alarm 30 is automatically started while the alarm information is prompted on the display screen 29. If the alarm state is improved, the alarm is automatically released. And if the alarm state deterioration reaches a safe alarm value, starting automatic shutdown logic, stopping pumping the reaction liquid into the hydrogen production agent metering pump 12 and the catalyst metering pump 13, and simultaneously opening the hydrogen discharge pressure valve 23 to discharge the hydrogen by pressure relief.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (8)
1. A high-safety hydrogen production device from sodium borohydride is characterized by comprising:
the device comprises a water tank, a hydrogen production agent reaction liquid stirring device, a catalyst reaction liquid stirring device, a hydrogen production agent reaction liquid metering pump, a catalyst reaction liquid metering pump, a reaction kettle, a radiator, a water-gas separator, a flame arrester and a hydrogen outlet electromagnetic valve;
the water tank is respectively connected with the hydrogen production agent reaction liquid stirring device and the catalyst reaction liquid stirring device, the hydrogen production agent reaction liquid stirring device is connected with the reaction kettle through the hydrogen production agent reaction liquid metering pump, the catalyst reaction liquid stirring device is connected with the reaction kettle through the catalyst reaction liquid metering pump, the top end of the reaction kettle is provided with a hydrogen outlet, and the hydrogen outlet at the top end of the reaction kettle is sequentially connected with a radiator, a water-gas separator, a flame arrester and a hydrogen outlet electromagnetic valve;
the hydrogen production agent reaction liquid stirring device comprises a hydrogen production agent water pump, a hydrogen production agent electromagnetic valve and a hydrogen production agent stirrer which are sequentially connected;
the catalyst reaction liquid stirring device comprises a catalyst water pump, a catalyst electromagnetic valve and a catalyst stirrer which are connected in sequence.
2. The high-safety hydrogen production plant using sodium borohydride as claimed in claim 1, wherein the bottom of the reaction kettle is provided with a liquid outlet for discharging the residual liquid after the reaction.
3. The high-safety sodium borohydride hydrogen production plant according to claim 1, wherein a pressure sensor is arranged at a hydrogen outlet at the top of the reaction kettle.
4. The high-safety sodium borohydride hydrogen production device according to claim 1, characterized in that the reaction kettle top hydrogen outlet is further provided with a hydrogen discharge pipeline, the hydrogen discharge pipeline is sequentially provided with a pressure relief solenoid valve, a hydrogen discharge check valve and a hydrogen discharge flame arrester, the hydrogen discharge electromagnetic valve, the hydrogen discharge check valve and the hydrogen discharge flame arrester are used for active hydrogen discharge, a mechanical safety relief valve used for passive hydrogen discharge is further arranged between the reaction kettle top hydrogen outlet and the hydrogen discharge flame arrester, one end of the mechanical safety relief valve is connected with the reaction kettle, and the other end of the mechanical safety relief valve is connected with the flame arrester and is installed on the hydrogen discharge pipeline.
5. The high-safety sodium borohydride hydrogen production device according to claim 1, wherein the pressure-bearing pressure of the reaction kettle ranges from 8bar to 20bar, the capacity ranges from 5L to 100L, two liquid inlets are respectively connected with the hydrogen production agent reaction liquid metering pump and the catalyst agent reaction liquid metering pump at the top, one hydrogen outlet is provided, and a liquid outlet is provided at the bottom.
6. The high-safety sodium borohydride hydrogen production device according to claim 1, wherein the hydrogen production agent reaction solution metering pump and the catalyst agent reaction solution metering pump are metering pumps with one-way functions.
7. The high-safety sodium borohydride hydrogen production device according to claim 1, further comprising a hydrogen monitor for monitoring hydrogen concentration and an audible and visual alarm connected to the hydrogen monitor.
8. A high safety hydrogen production method from sodium borohydride using the apparatus of claim 1, comprising the steps of:
1) detecting the air tightness of the device, introducing nitrogen with certain pressure from a liquid outlet to perform nitrogen purging operation, wherein the nitrogen pressure ranges from 0.3bar to 3bar, and discharging air in the reaction kettle and a pipeline from a hydrogen outlet under the action of the nitrogen; after purging is finished, closing the waste liquid electromagnetic valve and the hydrogen outlet electromagnetic valve, stopping introducing nitrogen and removing nitrogen, setting the opening pressure range of the check valve to be 0.1bar to 1bar under the action of the check valve, and safely discharging when the gas pressure in the reaction kettle and the pipeline exceeds the opening pressure of the check valve in the positive direction, wherein reverse air cannot enter the reaction kettle and the pipeline; the reaction kettle and the pipeline are in a positive pressure nitrogen state, so that the purity of the produced hydrogen is guaranteed;
2) respectively adding a certain amount of hydrogen production agent and a certain amount of catalyst into the top ends of the hydrogen production agent stirrer and the catalyst stirrer through feed openings, opening a hydrogen production agent electromagnetic valve and a catalyst electromagnetic valve, starting a water pump to pump water into the stirrer, simultaneously starting a stirring motor, and closing the hydrogen production agent electromagnetic valve, the catalyst electromagnetic valve and the water pump after uniform mixing;
3) starting a metering pump to pump the reaction liquid into the reaction kettle, wherein a waste liquid electromagnetic valve and a pressure relief electromagnetic valve are in a closed state when working, a hydrogen outlet electromagnetic valve is in an open state, and the generated hydrogen passes through a hydrogen outlet at the top end of the reaction kettle and sequentially passes through a radiator, a water-gas separator, a flame arrester, a hydrogen outlet electromagnetic valve and a hydrogen outlet one-way valve to reach the hydrogen outlet;
4) when the hydrogen production cycle is finished, a hydrogen outlet electromagnetic valve is closed, a waste liquid electromagnetic valve is opened, residual liquid after reaction is discharged through a waste liquid port, the reaction kettle is cleaned simultaneously according to needs, a certain amount of water is injected into the reaction kettle under the action of a water pump and a metering pump, the waste liquid electromagnetic valve is discharged through the waste liquid port after cleaning, the waste liquid electromagnetic valve is closed immediately after liquid is discharged, and after the system is completely stopped, the pressure relief electromagnetic valve is in a normally open state;
5) the hydrogen production process is provided with safety alarm logic, the states of the hydrogen concentration and the working pressure of each pressure sensor are monitored on line, the safety alarm information is automatically graded, when the hydrogen concentration and the working pressure of each pressure sensor are close to the safety alarm value, alarm information is prompted on a display screen, meanwhile, an audible and visual alarm is automatically started, if the alarm state deteriorates and reaches the safety alarm value, the automatic shutdown logic is started, the pumping of reaction liquid is stopped, and meanwhile, a hydrogen discharge pressure valve is opened to discharge the pressure and discharge the hydrogen.
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Cited By (1)
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| CN113809361A (en) * | 2021-09-15 | 2021-12-17 | 江南造船(集团)有限责任公司 | Hydrogen fuel power system capable of instantly producing hydrogen and ship |
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Application publication date: 20210202 |