CN116281855A - Acid-catalyzed sodium borohydride solution hydrolysis hydrogen production device - Google Patents
Acid-catalyzed sodium borohydride solution hydrolysis hydrogen production device Download PDFInfo
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- CN116281855A CN116281855A CN202310461804.0A CN202310461804A CN116281855A CN 116281855 A CN116281855 A CN 116281855A CN 202310461804 A CN202310461804 A CN 202310461804A CN 116281855 A CN116281855 A CN 116281855A
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- 229910000033 sodium borohydride Inorganic materials 0.000 title claims abstract description 83
- 239000012279 sodium borohydride Substances 0.000 title claims abstract description 83
- 239000001257 hydrogen Substances 0.000 title claims abstract description 78
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 78
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 76
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 34
- 238000006460 hydrolysis reaction Methods 0.000 title claims abstract description 26
- 230000007062 hydrolysis Effects 0.000 title claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 200
- 239000002699 waste material Substances 0.000 claims abstract description 70
- 239000003377 acid catalyst Substances 0.000 claims abstract description 57
- 238000006243 chemical reaction Methods 0.000 claims abstract description 53
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 70
- 238000003860 storage Methods 0.000 claims description 15
- 238000004891 communication Methods 0.000 claims description 13
- 239000007789 gas Substances 0.000 claims description 12
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 3
- 239000003054 catalyst Substances 0.000 abstract description 8
- 239000002253 acid Substances 0.000 abstract description 3
- 208000012839 conversion disease Diseases 0.000 abstract description 3
- 230000007935 neutral effect Effects 0.000 abstract description 2
- 230000003197 catalytic effect Effects 0.000 abstract 1
- 230000000977 initiatory effect Effects 0.000 abstract 1
- 238000004090 dissolution Methods 0.000 description 21
- 230000009286 beneficial effect Effects 0.000 description 11
- 238000000926 separation method Methods 0.000 description 4
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 150000002431 hydrogen Chemical class 0.000 description 3
- NVIFVTYDZMXWGX-UHFFFAOYSA-N sodium metaborate Chemical compound [Na+].[O-]B=O NVIFVTYDZMXWGX-UHFFFAOYSA-N 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 229910000510 noble metal Inorganic materials 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 238000007171 acid catalysis Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- PVGBHEUCHKGFQP-UHFFFAOYSA-N sodium;n-[5-amino-2-(4-aminophenyl)sulfonylphenyl]sulfonylacetamide Chemical compound [Na+].CC(=O)NS(=O)(=O)C1=CC(N)=CC=C1S(=O)(=O)C1=CC=C(N)C=C1 PVGBHEUCHKGFQP-UHFFFAOYSA-N 0.000 description 1
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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
- C01B3/065—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 from a hydride
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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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- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Inorganic Chemistry (AREA)
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Abstract
The invention discloses an acid-catalyzed sodium borohydride solution hydrolysis hydrogen production device which comprises a reaction tank, a condenser, a gas-liquid separator and a waste liquid tank, wherein a sodium borohydride feed inlet, an acid catalyst feed inlet and a first hydrogen outlet are formed in the top of the reaction tank, the first hydrogen outlet is communicated with the condenser feed inlet, a waste liquid outlet is formed in the side face of the reaction tank, the waste liquid outlet is communicated with the waste liquid tank, a condenser discharge port is communicated with the gas-liquid separator, the bottom of the gas-liquid separator is communicated with the waste liquid tank, and a second hydrogen outlet is formed in the top of the gas-liquid separator. The device of the utility model directly utilizes the acid solution as catalyst catalytic sodium borohydride solution to take place hydrolysis reaction hydrogen production, can accomplish to start and stop along with producing along with using, quick repetition, and reaction initiation is fast, and hydrogen production rate is steady, does not have instantaneous phenomenon of overshooting, and reaction conversion rate is high, and waste liquid after the reaction is nearly neutral, does not have corrosivity to the device, can direct discharge.
Description
Technical Field
The invention belongs to the technical field of hydrogen production, and particularly relates to an acid-catalyzed sodium borohydride solution hydrolysis hydrogen production device.
Background
In recent years, hydrogen energy and fuel cells have rapidly developed, but the popularization of civilian use has been relatively slow, mainly because the difficulty in storing and transporting hydrogen has limited the use of hydrogen in places remote from the manufacturing sites. In contrast, the on-site hydrogen production mode is more suitable for providing a hydrogen source for a fuel cell or being used as the hydrogen source in field operation. Sodium borohydride hydrolysis hydrogen production is a simpler on-site hydrogen production technology, and has the advantages that: high hydrogen storage density, convenient regulation of hydrogen production rate, normal temperature start of reaction and low requirement on water quality.
The existing sodium borohydride hydrolysis hydrogen production reaction device adopts a supported or powdery noble metal or non-noble metal catalyst to catalyze sodium borohydride hydrolysis, the catalyst needs to be prepared in advance, and the existing catalyst is difficult to realize rapid and repeated start and stop of the reaction; secondly, the sodium borohydride hydrolysis has short-time hydrogen production rate overshoot phenomenon in the starting stage, and the possibility of overpressure of the system is high; in addition, the sodium metaborate solution after sodium borohydride hydrolysis is more alkaline and has certain corrosiveness to the device.
Disclosure of Invention
Aiming at the prior art, the invention provides an acid-catalyzed sodium borohydride solution hydrolysis hydrogen production device, which aims to solve the problems that the existing sodium borohydride solution hydrolysis hydrogen production device needs to be prepared in advance, has short-time hydrogen production rate overshoot and is corrosive to the device.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: the utility model provides an acid catalysis sodium borohydride solution hydrolysis hydrogen plant, including retort, condenser, gas-liquid separator and waste liquid jar, the retort top is provided with sodium borohydride feed inlet, acid catalyst feed inlet and first hydrogen export, first hydrogen export and condenser feed inlet intercommunication, and the retort side is provided with the waste liquid export, and the waste liquid export communicates with the waste liquid jar, and condenser discharge gate and gas-liquid separator communicate, gas-liquid separator bottom and waste liquid jar intercommunication, gas-liquid separator top is provided with the second hydrogen export.
The beneficial effects of adopting above-mentioned technical scheme are that this practicality: when the reaction tank is used, sodium borohydride solution enters the reaction tank from a sodium borohydride feed inlet, acid catalyst solution enters the reaction tank from an acid catalyst feed inlet, sodium borohydride reacts in the reaction tank under the action of the acid catalyst to generate hydrogen, the hydrogen and vapor carried by the hydrogen enter the condenser from a first hydrogen outlet at the top of the reaction tank, and reacted waste liquid is discharged into the waste liquid tank from a waste liquid outlet. The hydrogen cooled by the condenser enters the gas-liquid separator to be subjected to gas-liquid separation, liquid after gas-liquid separation is stored at the bottom of the gas-liquid separator, the hydrogen enters the upper part of the gas-liquid separator, the liquid at the bottom is discharged into the waste liquid tank, and the hydrogen at the top is discharged from the second hydrogen outlet. The device directly uses acid solution as a catalyst to catalyze sodium borohydride solution to generate hydrolysis reaction to prepare hydrogen, so that the hydrogen can be used at any time, and quick repeated start and stop can be realized; the reaction is homogeneous reaction, the reactant is fully contacted, the stable state can be quickly reached, the instant overshoot can not occur, and the reaction conversion rate exceeds 95%; due to the existence of the acid catalyst, the product after the reaction does not contain sodium metaborate and has no alkali liquor corrosion problem.
On the basis of the technical scheme, the invention can be improved as follows.
Further, a sodium borohydride feed inlet is communicated with a sodium borohydride dissolution tank, a sodium borohydride storage bin is arranged at the top of the sodium borohydride dissolution tank, and the sodium borohydride dissolution tank is communicated with a water tank.
The beneficial effects of adopting the above further technical scheme are that this practicality: sodium borohydride enters a sodium borohydride dissolving tank from a sodium borohydride storage bin, and water enters the sodium borohydride dissolving tank from a water tank, so that sodium borohydride is fully dissolved in the sodium borohydride dissolving tank to form a solution, and a sodium borohydride solution is obtained.
Further, an acid catalyst feed inlet is communicated with an acid catalyst dissolution tank, an acid catalyst storage bin is arranged at the top of the acid catalyst dissolution tank, and the acid catalyst dissolution tank is communicated with a water tank.
The beneficial effects of adopting the above further technical scheme are that this practicality: the acid catalyst enters an acid catalyst dissolution tank from an acid catalyst storage bin, and water enters the acid catalyst dissolution tank from a water tank, so that the acid catalyst is fully dissolved in the acid catalyst dissolution tank to form a solution, and an acid catalyst solution is obtained.
Further, a first liquid level indicator and a first feed pump are arranged at the bottom of the sodium borohydride dissolution tank, and a second liquid level indicator and a second feed pump are arranged at the bottom of the acid catalyst dissolution tank.
The beneficial effects of adopting the above further technical scheme are that this practicality: and controlling the solution concentration and the liquid outlet amount of sodium borohydride in the sodium borohydride dissolving tank according to the data of the first liquid level indicator and the first feed pump, and controlling the solution concentration and the liquid outlet amount of the acid catalyst in the acid catalyst dissolving tank according to the data of the second liquid level indicator and the second feed pump, thereby controlling the weight ratio of sodium borohydride to the acid catalyst in the reaction tank.
Further, be provided with first temperature display table and first temperature pressure display table on the retort, the retort side is provided with the third liquid level indicator, is provided with first solenoid valve on the pipeline between waste liquid export and the waste liquid jar, third liquid level indicator and first solenoid valve communication connection.
The beneficial effects of adopting the above further technical scheme are that this practicality: the first temperature display meter and the first temperature pressure display meter are respectively used for detecting the temperature and the pressure in the reaction tank. After the reaction is finished, the first electromagnetic valve is manually opened to drain, and when the liquid level of the waste liquid in the reaction tank is reduced to the liquid level of the liquid third liquid level indicator, the first electromagnetic valve is automatically closed.
Further, the condensate water inlet and the condensate water outlet of the condenser are respectively communicated with the water tank, a first water pump is arranged on a pipeline between the condensate water inlet and the water tank of the condenser, and the first water pump is in communication connection with the first temperature display meter.
The beneficial effects of adopting the above further technical scheme are that this practicality: the water in the water tank is used as cooling water to be conveyed to the condenser through the first water pump, exchanges heat with hydrogen and water vapor entering the condenser, and flows out of the condenser to return to the water tank. The first water pump is in communication connection with the first temperature display meter, so that the first water pump can be controlled to be started and closed according to the data of the first temperature display meter, and the condensation effect is controlled.
When the temperature shown by the No. 1 thermometer exceeds 40 ℃, the water pump 3 is automatically started, and when the temperature shown by the No. 1 thermometer is lower than 40 ℃, the water pump 3 is automatically shut down.
Further, the upper end of the gas-liquid separator is provided with a silk screen foam remover, the second hydrogen outlet is communicated with the filter, the side surface of the gas-liquid separator is provided with a fourth liquid level indicator and a fifth liquid level indicator, a second electromagnetic valve is arranged on a pipeline between the gas-liquid separator and the waste liquid tank, and the fourth liquid level indicator and the fifth liquid level indicator are respectively in communication connection with the second electromagnetic valve.
The beneficial effects of adopting the above further technical scheme are that this practicality: the silk screen foam remover is used for eliminating entrainment. The second electromagnetic valve can automatically control the waste liquid at the bottom of the gas-liquid separator to be discharged to the waste liquid tank according to the liquid level display of the fourth liquid level indicator and the fifth liquid level indicator.
Further, the top of the waste liquid tank is provided with a breathing port, the side face of the waste liquid tank is provided with a sixth liquid level indicator and a seventh liquid level indicator, a third electromagnetic valve is arranged on a waste liquid outlet pipeline at the bottom of the side face of the waste liquid tank, and the sixth liquid level indicator and the seventh liquid level indicator are respectively in communication connection with the third electromagnetic valve.
The beneficial effects of adopting the above further technical scheme are that this practicality: the third electromagnetic valve can automatically control the discharge of the waste liquid in the waste liquid tank from the waste liquid outlet pipeline according to the liquid level display of the sixth liquid level indicator and the seventh liquid level indicator.
Further, a safety valve is arranged at the top of the reaction tank, and the reaction tank and N are arranged 2 The gas cylinders are communicated.
The beneficial effects of adopting the above further technical scheme are that this practicality: when the pressure in the reactor reaches a high limit, the relief valve automatically opens the relief system pressure. Can pass through N 2 N in gas cylinder 2 The purging gas circuit and the reaction tank are used for respectively evacuating air and hydrogen in the system before and after the reaction.
Further, a second temperature display meter is arranged on a pipeline between the condenser and the gas-liquid separator.
The beneficial effects of adopting the above further technical scheme are that this practicality: the second temperature display table is used for displaying the temperature of the condensed gas.
The beneficial effects of the invention are as follows:
the device directly uses the acid solution as the catalyst to catalyze the sodium borohydride solution to generate hydrolysis reaction for hydrogen production, the catalyst does not need to be prepared in advance, the use is convenient, the use can be realized at any time, the rapid repeated start and stop can be realized, and the device is very suitable for intermittent hydrogen production scenes with indefinite duration; the reaction is a homogeneous reaction, reactants are fully contacted, the hydrogen production reaction is started quickly, a stable state can be quickly achieved, instant overshoot can not occur, and the reaction conversion rate exceeds 95%; the waste liquid after the hydrogen production reaction is nearly neutral, has no corrosiveness to the device and can be directly discharged; because of the existence of the acid catalyst, the product after the reaction does not contain sodium metaborate and has no alkali liquor corrosion problem.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
wherein 1, water tank, 2, sodium borohydride bin, 3, acid catalyst bin, 4, sodium borohydride dissolution tank, 5, acid catalyst dissolution tank, 6, second water pump, 7, third water pump, 8, first water pump, 9, first feed pump, 10, second feed pump, 11, first liquid level indicator, 12, second liquid level indicator, 13, first drain valve, 14, second drain valve, 15, reaction tank, 16, first temperature indicator, 17, first pressure indicator, 18, third liquid level indicator, 19, relief valve, 20, first solenoid valve, 21, condenser, 22, second temperature indicator, 23, gas-liquid separator, 24, fourth liquid level indicator, 25, fifth liquid level indicator, 26, second solenoid valve, 27, filter, 28, waste liquid tank, 29, sixth liquid level indicator, 30, seventh liquid level indicator, 31, third solenoid valve, 32, N 2 And (3) a gas cylinder.
Detailed Description
The following describes the embodiments of the present invention in detail with reference to the drawings.
In an embodiment of the present invention, as shown in fig. 1, there is provided an acid-catalyzed sodium borohydride solution hydrolysis hydrogen production apparatus, comprising a water tank 1, a reaction tank 15, a condenser 21, a gas-liquid separator 23, and a waste liquid tank 28.
The top of the reaction tank 15 is provided with a sodium borohydride feed inlet, an acid catalyst feed inlet and a first hydrogen outlet, and the first hydrogen outlet is communicated with the feed inlet of the condenser 21. The side surface of the reaction tank 15 is provided with a waste liquid outletThe port communicates with a waste tank 28. The top of the reaction tank 15 is provided with a safety valve 19. Reaction tanks 15 and N 2 The gas cylinders 32 are connected so as to pass N 2 Evacuating the system of air and hydrogen.
The sodium borohydride feed inlet is communicated with the sodium borohydride dissolution tank 4, and a first feed pump 9 for controlling feed is arranged on a pipeline between the sodium borohydride feed inlet and the sodium borohydride dissolution tank 4. The sodium borohydride dissolving tank 4 is provided with a sodium borohydride storage bin 2 at the top, the sodium borohydride dissolving tank 4 is provided with a feed inlet communicated with a discharge hole of the sodium borohydride storage bin 2, the sodium borohydride dissolving tank 4 is communicated with the water tank 1, and a second water pump 6 for conveying water to the sodium borohydride dissolving tank 4 is arranged in a pipeline between the sodium borohydride dissolving tank 4 and the water tank 1, so that the preparation of sodium borohydride solution can be completed in the sodium borohydride dissolving tank 4. The bottom of the sodium borohydride dissolving tank 4 is provided with a first liquid level indicator 11, a first liquid discharge valve 13 and a first feed pump 9.
The acid catalyst feed inlet is communicated with the acid catalyst dissolution tank 5, and a second feed pump 10 for controlling the feed is arranged on a pipeline between the acid catalyst feed inlet and the acid catalyst dissolution tank 5. The top of the acid catalyst dissolving tank 5 is provided with an acid catalyst storage bin 3, the top of the acid catalyst dissolving tank 5 is provided with a feed inlet communicated with a discharge outlet of the acid catalyst storage bin 3, the acid catalyst dissolving tank 5 is communicated with the water tank 1, and a third water pump 7 for conveying water to the acid catalyst dissolving tank 5 is arranged in a pipeline between the acid catalyst dissolving tank 5 and the water tank 1, so that the preparation of an acid catalyst solution can be completed in the acid catalyst dissolving tank 5. The bottom of the acid catalyst dissolution tank 5 is provided with a second liquid level indicator 12, a second drain valve 14 and a second feed pump 10.
The reaction tank 15 is provided with a first temperature display meter 16 and a first pressure display meter 17 for monitoring the temperature and pressure of the reaction. The side of the reaction tank 15 is provided with a third liquid level indicator 18, a first electromagnetic valve 20 is arranged on a pipeline between the waste liquid outlet and the waste liquid tank 28, and the third liquid level indicator 18 is in communication connection with the first electromagnetic valve 20, so that liquid discharge can be automatically stopped according to the liquid level.
The discharge port of the condenser 21 is communicated with the gas-liquid separator 23, and a second temperature display meter 22 for monitoring the condensation effect is arranged on a pipeline between the condenser 21 and the gas-liquid separator 23. The condensate water inlet and the condensate water outlet of the condenser 21 are respectively communicated with the water tank 1, a first water pump 8 for conveying water to the condenser 21 is arranged on a pipeline between the condensate water inlet of the condenser 21 and the water tank 1, and the first water pump 8 is in communication connection with the first temperature display meter 16, so that the condensation effect is controlled. The first water pump 8 is automatically turned on when the temperature shown in the first temperature display table 16 exceeds 40 c, and the first water pump 8 is automatically turned off when the temperature shown in the first temperature display table 16 is lower than 40 c.
The bottom of the gas-liquid separator 23 is communicated with a waste liquid tank 28, and a second hydrogen outlet is arranged at the top of the gas-liquid separator 23 and is communicated with a filter 27. The upper end of the inside of the gas-liquid separator 23 is provided with a silk screen foam remover. The side of the gas-liquid separator 23 is provided with a fourth liquid level indicator 24 and a fifth liquid level indicator 25, a second electromagnetic valve 26 is arranged on a pipeline between the gas-liquid separator 23 and a waste liquid tank 28, and the fourth liquid level indicator 24 and the fifth liquid level indicator 25 are respectively in communication connection with the second electromagnetic valve 26, so that waste liquid can be discharged according to the liquid level.
The top of the waste liquid tank 28 is provided with a breathing port, the side surface of the waste liquid tank 28 is provided with a sixth liquid level indicator 29 and a seventh liquid level indicator 30, a waste liquid outlet pipeline at the bottom of the side surface of the waste liquid tank 28 is provided with a third electromagnetic valve 31, and the sixth liquid level indicator 29 and the seventh liquid level indicator 30 are respectively in communication connection with the third electromagnetic valve 31, so that waste liquid can be discharged according to the liquid level.
Before hydrogen production, sodium borohydride and acid catalyst are respectively added into a sodium borohydride storage bin 2 and an acid catalyst storage bin 3, and N is opened 2 The gas cylinder 32 is charged with N for a certain period of time 2 The air in the reactor 15, condenser 21, gas-liquid separator 23, filter 27 and piping is discharged, and then N is closed 2 A gas cylinder 32. During hydrogen production, the sodium borohydride storage bin 2 and the acid catalyst storage bin 3 respectively and automatically control the sodium borohydride and the acid catalyst with specific weights to be discharged, so that the weight ratio of the sodium borohydride to the acid catalyst accords with the reaction ratio, and then the second water pump 6 and the third water pump 7 are started to respectively convey water in the water tank 1 to the sodium borohydride dissolving tank 4 and the acid catalyst dissolving tank 5 according to set flow rates to respectively dissolve sodium borohydride and acidThe catalyst, the second water pump 6 and the third water pump 7 are automatically turned off after a set time is reached, so that the sodium borohydride solution and the acid catalyst solution in the sodium borohydride dissolution tank and the acid catalyst dissolution tank just reach specific concentrations. After dissolution is completed, the first feed pump 9 and the second feed pump 10 are started to respectively convey the sodium borohydride solution and the acid catalyst solution into the reaction tank 15 according to set flow rates, the two solutions are contacted in the reaction tank 15 to react to generate hydrogen, and the hydrogen and water vapor carried by the hydrogen enter the condenser 21 from a first hydrogen outlet at the top of the reaction tank 15. The first temperature display meter 16 and the first pressure display meter 17 respectively detect the temperature and the pressure in the reaction tank 15, when the temperature displayed by the first temperature display meter 16 exceeds 40 ℃, the first water pump 8 is automatically started, the first water pump 8 conveys the water in the water tank 1 to the condenser 21 according to a set flow rate, and the water exchanges heat with the hydrogen and the water vapor entering the condenser 21 and then flows out of the condenser 21 to flow back to the water tank 1. The hydrogen enters a gas-liquid separator 23 for gas-liquid separation after cooling down, a second temperature display table 22 displays the temperature of the condensed gas, the liquid after gas-liquid separation is stored at the bottom of the gas-liquid separator 23, the hydrogen enters the upper part of the gas-liquid separator 23, entrainment is eliminated through a wire mesh demister, then the hydrogen enters a filter 27 from a second hydrogen outlet for further filtration and purification treatment, and the hydrogen purified by the filter 27 is output to the outside. When the liquid level of the liquid in the gas-liquid separator 23 reaches the liquid level of the fourth liquid level indicator 24, the second electromagnetic valve 26 on the waste liquid outlet pipeline at the bottom of the gas-liquid separator 23 is automatically opened, and the liquid is discharged from the waste liquid outlet pipeline to the waste liquid tank 28; when the liquid level drops to the liquid level of the fifth liquid level indicator 25, the second solenoid valve 26 is automatically closed. During the reaction, if the pressure in the reaction tank 15 reaches the upper limit, the relief valve 19 automatically opens the relief system pressure. When the liquid level in the sodium borohydride dissolving tank 4 and the acid catalyst dissolving tank 5 respectively decrease to the liquid level of the first liquid level indicator 11 and the second liquid level indicator 12, the first feeding pump and the second feeding pump are respectively and automatically closed, the first feeding pump and the second feeding pump can be manually closed at any time, the reaction is stopped later, the waste liquid in the reaction tank 15 begins to be cooled, and when the temperature displayed by the first temperature indicator 16 is lower than 40 ℃, the first water pump 8 automatically turns offAnd closing. The first electromagnetic valve 20 is manually opened, the waste liquid in the reaction tank 15 is discharged into the waste liquid tank 28 from the waste liquid outlet, and when the liquid level of the waste liquid in the reaction tank 15 is reduced to the liquid level of the third liquid level indicator 18, the first electromagnetic valve 20 is automatically closed. Turn on N 2 The gas cylinder 32 is charged with N for a certain period of time 2 The hydrogen in the reaction tank 15, the condenser 21, the gas-liquid separator 23, the filter 27 and the piping is discharged, and then N is closed 2 A gas cylinder 32. After a plurality of reactions, when the liquid level of the waste liquid in the waste liquid tank 28 reaches the liquid level of the sixth liquid level indicator 29, the third electromagnetic valve 31 is automatically opened, and the waste liquid in the waste liquid tank 28 is automatically discharged; when the liquid level of the waste liquid in the waste liquid tank 28 falls to the liquid level of the seventh liquid level indicator 30, the third solenoid valve 31 is automatically closed.
Although specific embodiments of the invention have been described in detail with reference to the accompanying drawings, it should not be construed as limiting the scope of protection of the present patent. Various modifications and variations which may be made by those skilled in the art without the creative effort are within the scope of the patent described in the claims.
Claims (10)
1. An acid-catalyzed sodium borohydride solution hydrolysis hydrogen production device is characterized in that: including retort (15), condenser (21), vapour and liquid separator (23) and waste liquid jar (28), retort (15) top is provided with sodium borohydride feed inlet, acid catalyst feed inlet and first hydrogen export, first hydrogen export with condenser (21) feed inlet intercommunication, retort (15) side is provided with the waste liquid export, the waste liquid export with waste liquid jar (28) intercommunication, condenser (21) discharge gate with vapour and liquid separator (23) intercommunication, vapour and liquid separator (23) bottom with waste liquid jar (28) intercommunication, vapour and liquid separator (23) top is provided with the second hydrogen export.
2. The acid-catalyzed sodium borohydride solution hydrolysis hydrogen production device according to claim 1, wherein: the sodium borohydride feeding port is communicated with the sodium borohydride dissolving tank (4), a sodium borohydride storage bin (2) is arranged at the top of the sodium borohydride dissolving tank (4), and the sodium borohydride dissolving tank (4) is communicated with the water tank (1).
3. The acid-catalyzed sodium borohydride solution hydrolysis hydrogen production device according to claim 2, wherein: the acid catalyst feeding port is communicated with the acid catalyst dissolving tank (5), an acid catalyst storage bin (3) is arranged at the top of the acid catalyst dissolving tank (5), and the acid catalyst dissolving tank (5) is communicated with the water tank (1).
4. The acid-catalyzed sodium borohydride solution hydrolysis hydrogen production device according to claim 2, wherein: the sodium borohydride dissolving tank is characterized in that a first liquid level indicator (11) and a first feed pump (9) are arranged at the bottom of the sodium borohydride dissolving tank (4), and a second liquid level indicator (12) and a second feed pump (10) are arranged at the bottom of the acid catalyst dissolving tank (5).
5. The acid-catalyzed sodium borohydride solution hydrolysis hydrogen production device according to claim 1, wherein: be provided with first temperature display table (16) and first pressure display table (17) on retort (15), retort (15) side is provided with third liquid level indicator (18), the waste liquid export with be provided with first solenoid valve (20) on the pipeline between waste liquid jar (28), third liquid level indicator (18) with first solenoid valve (20) communication connection.
6. The acid-catalyzed sodium borohydride solution hydrolysis hydrogen production device according to claim 2, wherein: the condensate water inlet and the condensate water outlet of the condenser (21) are respectively communicated with the water tank (1), a first water pump (8) is arranged on a pipeline between the condensate water inlet of the condenser (21) and the water tank (1), and the first water pump (8) is in communication connection with the first temperature display meter (16).
7. The acid-catalyzed sodium borohydride solution hydrolysis hydrogen production device according to claim 1, wherein: the utility model discloses a hydrogen gas separator, including gas-liquid separator (23), filter (27) and filter, gas-liquid separator (23) upper end sets up the silk screen foam-removing device, second hydrogen outlet and filter (27) intercommunication, gas-liquid separator (23) side is provided with fourth liquid level indicator (24) and fifth liquid level indicator (25), gas-liquid separator (23) with be provided with second solenoid valve (26) on the pipeline between waste liquid jar (28), fourth liquid level indicator (24) with fifth liquid level indicator (25) table respectively with second solenoid valve (26) communication connection.
8. The acid-catalyzed sodium borohydride solution hydrolysis hydrogen production device according to claim 1, wherein: the waste liquid tank is characterized in that a breathing port is formed in the top of the waste liquid tank (28), a sixth liquid level indicator (29) and a seventh liquid level indicator (30) are arranged on the side face of the waste liquid tank (28), a third electromagnetic valve (31) is arranged on a waste liquid outlet pipeline at the bottom of the side face of the waste liquid tank (28), and the sixth liquid level indicator (29) and the seventh liquid level indicator (30) are respectively in communication connection with the third electromagnetic valve (31).
9. The acid-catalyzed sodium borohydride solution hydrolysis hydrogen production device according to claim 1, wherein: the top of the reaction tank (15) is provided with a safety valve (19), and the reaction tank (15) and N are connected with each other 2 The gas cylinders (32) are communicated.
10. The acid-catalyzed sodium borohydride solution hydrolysis hydrogen production device according to claim 1, wherein: a second temperature display meter (22) is arranged on a pipeline between the condenser (21) and the gas-liquid separator (23).
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