CN209024200U - A kind of preparing hydrogen by sodium borohydride hydrolysis device - Google Patents

Abstract

The utility model discloses a kind of preparing hydrogen by sodium borohydride hydrolysis devices.Catalyst elements are filled in intracavitary in the second accommodating by the device, the catalyst elements include the catalyst layer of carrier layer and load thereon, carrier layer curls into several fuel circulation passages, fuel enters the second accommodating inner cavity from inlet, and during flowing through fuel circulation passage with catalyst layer contacts, contact path is longer at this time, is able to maintain the characteristics such as the higher temperature for being conducive to that hydrogen reacts, and keeps reaction more rapidly and abundant.First shell and nested second shell in the inner are set simultaneously, the first accommodating space for accommodating hydrogen is formed between first shell and second shell, first accommodating space sectional area is larger, to slow down air velocity, in addition the first accommodating space is conducive to heat dissipation, being turned back using air-flow carries out gas-liquid separation with gravity, separative efficiency is improved, finally improves preparing hydrogen by sodium borohydride hydrolysis device energy density and power density, and its long-term stable work can be made.

Description

A kind of preparing hydrogen by sodium borohydride hydrolysis device

Technical field

The utility model belongs to technical field of hydrogen preparation, and in particular to a kind of preparing hydrogen by sodium borohydride hydrolysis device, especially It is related to a kind of sodium borohydride preparing hydrogen by sodium borohydride hydrolysis device that can be applied to the portable hydrogen source of fuel cell.

Background technique

Fuel cell technology is the most potential technology for becoming next-generation non-renewable energy after fossil fuel.It is will to change Can be converted into electric energy, and power generation process is not limited by Carnot Engine circulation, and energy conversion efficiency is high.Meanwhile fuel electricity Pond or a kind of clean, environmental-friendly generation mode, do not generate harmful substance.For opposite battery, fuel cell Energy density is very high, and without waiting for charging.

However due to the various system additional components of fuel cell, so that the power of entire preparing hydrogen by sodium borohydride hydrolysis device Density is lower, mostly in the level of tens watts of grades of watt grade, due to the basis weight of gaseous state hydrogen-storing device, so that fuel cell is whole Body power density is lower.Currently, because sodium borohydride produces, hydrogen process is simple, and system is simple, and production hydrogen speed is adjustable, mostly uses configuration boron The fuel cell of sodium hydride hydrogen-feeding system.

For example, Chinese patent literature CN101353155A discloses a kind of sodium borohydride hydrogen making reaction device and its method. The device includes reaction unit and control device.Reaction unit passes through sodium borohydride solution straight on capillary jet pipe in the reaction chamber Diameter is less than the spout of 0.5mm, and solution is uniformly ejected on catalyst-assembly, and catalyst-assembly is that catalyst chemistry is heavy Shallow lake method is attached on porous carrier materials, and membrane-like is made in the catalyst-assembly and is attached at reaction chamber wall.

In above-mentioned technology, catalyst adheres on the porous material, then is attached at reaction chamber wall, and such mode will lead to combustion Material and catalyst insufficient contact, to influence the energy density and power density of preparing hydrogen by sodium borohydride hydrolysis device.

Utility model content

Technical problem to be solved in the utility model be existing preparing hydrogen by sodium borohydride hydrolysis device there are energy density and Power density is low, the defect that cannot be worked long hours, thus provide a kind of energy density and power density it is high, can be steady for a long time Determine the preparing hydrogen by sodium borohydride hydrolysis device of trouble free service.

In order to solve the above technical problems, the technical solution of the utility model are as follows:

A kind of preparing hydrogen by sodium borohydride hydrolysis device, including hydrogen generator comprising,

First shell and nested second shell in the inner, form between the first shell and the second shell for holding The first accommodating space of hydrogen is set, the second shell includes the second accommodating inner cavity and is connected to and sets with second accommodating inner cavity The inlet being placed in the second shell；

Catalyst elements, be filled in it is described second accommodating in it is intracavitary, the catalyst elements include carrier layer and are carried on Catalyst layer thereon, the carrier layer curl into several fuel circulation passages, and fuel enters described the from the inlet Two accommodating inner cavities, and during flowing through the fuel circulation passage with the catalyst layer contacts, generate hydrogen, hydrogen into Enter in first accommodating space.

It further, further include purification device, purification device includes the reflux unit being sequentially communicated and gas washing unit, described Reflux unit is connected to first accommodating space, and hydrogen comes out from first accommodating space, and flows successively through the reflux Unit and gas washing unit；

Along the axial direction of the reflux unit and gas washing unit, intracavitary interval setting in the reflux unit and gas washing unit Several perforated baffles；

Second solenoid valve is set between the reflux unit and gas washing unit.

Further, further include primary purifying unit, be set between first accommodating space and the purification device, So that the hydrogen in first accommodating space enters in the purification device after the purification of the primary purifying unit.

Preferably, the primary purifying unit, including close to first accommodating space and the air outlet section that communicates therewith；And The porous layer of resistance to strong base material being filled in the air outlet section.

Further, further include liquid storage unit, inside hold fuel, and be connected to the inlet；

Supply unit is set between the liquid storage unit and inlet, and fuel is delivered to from the liquid storage unit In first accommodating space.

Preferably, the second solenoid valve is check valve, and the supply unit is peristaltic pump.

Preferably, the liquid storage unit includes the cubic type shell of built-in fuel cavity, cubic type shell side It is upper to have towards fuel cavity recess, the groove for placing the gas washing unit；

The hydrogen generator and the ipsilateral and close cubic type housing central section of the groove are arranged, the first shell The reflux unit is arranged in the upper end of body, and waste collection unit is arranged in lower end；

The fuel cell pile, the hydrogen inlet of the fuel cell pile is arranged in cubic type shell opposite side It is connected to the hydrogen outlet of the gas washing unit.

Further, further include heat-sink unit, along the axial direction of the first shell, be arranged at intervals at the first shell On；

First blowing unit is set to one side close to the heat-sink unit, to dry towards the heat-sink unit.

Preferably, the heat-sink unit is cooling fin；

The first shell is outer sleeve；

The second shell is inner sleeve；

The carrier layer is foam nickel layer, and the catalyst layer is Co-P-B three-element catalytic oxidant layer；

First blowing unit is fan.

Further, further include liquid outlet, be oppositely arranged with the inlet, and be connected to second accommodating inner cavity；

Liquid collecting unit is set between the first shell and liquid outlet, with collect reaction after fuel, and from it is described go out The discharge of liquid mouth；

Waste collection unit is connected to the liquid outlet, so that the fuel after reaction enters the waste collection unit；

First solenoid valve, is set between the liquid collecting unit and liquid outlet or the liquid outlet and the waste collection Between unit.

The above-mentioned technical proposal of the utility model has the advantage that compared with prior art

(1) catalyst elements are filled in the second accommodating by preparing hydrogen by sodium borohydride hydrolysis device provided by the utility model Interior intracavitary, which includes the catalyst layer of carrier layer and load thereon, and carrier layer curls into several fuel streams Circulation passage, the second accommodating inner cavity is smaller relative to the first accommodating intracavity section product in addition, and fuel enters the second accommodating from inlet Inner cavity, and with catalyst layer contacts during flowing through fuel circulation passage, contact path is longer at this time, is able to maintain and is conducive to The characteristics such as the higher temperature that hydrogen reacts keep reaction more rapidly and abundant.First shell and nesting are set simultaneously in the inner Second shell, form the first accommodating space for accommodating hydrogen between first shell and second shell, the first accommodating space is cut Area is larger, to slow down air velocity, the first accommodating space is conducive to heat dissipation in addition, being turned back using air-flow is carried out with gravity Gas-liquid separation improves separative efficiency, ultimately provides preparing hydrogen by sodium borohydride hydrolysis device energy density and power density, and can make Its long-term stable work.

(2) preparing hydrogen by sodium borohydride hydrolysis device provided by the utility model reacts the hydrogen of generation through in the first accommodating After chamber gas-liquid separation, the purification device of reflux unit and gas washing unit composition is flowed successively through, hydrogen impurity and purification are completed.Along reflux The axial direction of unit and gas washing unit, several perforated baffles are arranged in intracavitary interval in the two, are dispersed into hydrogen by the baffle Many minute bubbles greatly increase specific surface area, promote removal of impurities and radiating efficiency, keep gas purification efficiency higher.

(3) preparing hydrogen by sodium borohydride hydrolysis device provided by the utility model utilizes its week by the way that the first solenoid valve is arranged The of short duration unlatching of phase property carries out discharging of waste liquid, and while completing the final separation of waste liquid and institute's hydrogen, the pressure of generation can make back The solution for flowing unit aggregation, is back to the first accommodating inner cavity, not only makes system more safety and stability, also make return pipe purified hydrogen The reaction solution assembled afterwards is back to the first accommodating inner cavity, further improves reaction efficiency.By in reflux unit and gas washing Second solenoid valve is set between unit, prevents the acid wash liquid in gas washing unit to be back to the first accommodating inner cavity and second using it It accommodates inner cavity and leads to catalyst inactivation.

(4) preparing hydrogen by sodium borohydride hydrolysis device provided by the utility model, the first accommodating space and purification device it Between primary purifying unit is set, in the porous layer of resistance to strong base material of filling, gas further is carried out to the gas of the first accommodating inner cavity Liquid separation, effectively prevent solution to enter purification device with gas, improves the reaction efficiency and stability of device for producing hydrogen.

Detailed description of the invention

It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art Under the premise of labour, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is the right view of preparing hydrogen by sodium borohydride hydrolysis device in the embodiments of the present invention 1；

Fig. 2 is the left view of preparing hydrogen by sodium borohydride hydrolysis device in Fig. 1；

Fig. 3 is the outside drawing of hydrogen generator in preparing hydrogen by sodium borohydride hydrolysis device in Fig. 1；

Fig. 4 is the structural schematic diagram of hydrogen generator in preparing hydrogen by sodium borohydride hydrolysis device in Fig. 1；

Fig. 5 is the structural schematic diagram of the hydrogen generator with heat-sink unit in preparing hydrogen by sodium borohydride hydrolysis device in Fig. 1；

Fig. 6 is the structural schematic diagram of catalyst elements in device for producing hydrogen in Fig. 3；

Fig. 7 is the structural schematic diagram of purification device in device for producing hydrogen in Fig. 1；

Fig. 8 is difference catalyst unit length in the test example of the utility model, hydrogen generation rate under different feed liquor flow velocitys Curve graph；

Appended drawing reference:

1- inlet；2- primary purifying unit；3- liquid outlet；The first solenoid valve of 4-；5- second shell；5-1- second is accommodated Inner cavity；6- first shell；The first accommodating space of 6-1-；6-2- gas vent；7- heat-sink unit；The first air inlet of 8-；9- second Solenoid valve；The second gas outlet 10-；11- perforated baffle；12- reflux unit；13- supply unit；The first blowing unit of 14-；15- Connecting pipeline；16- waste collection unit；17- gas washing unit；18- catalyst elements；18-1- fuel circulation passage；19- liquid collecting Unit；20- liquid storage unit.

Specific embodiment

The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical Novel protected range.

It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " the One ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition The concrete meaning of language in the present invention.

In addition, as long as technical characteristic involved in the utility model different embodiments disclosed below is each other Not constituting conflict can be combined with each other.

Embodiment 1

A kind of preparing hydrogen by sodium borohydride hydrolysis device is present embodiments provided, as shown in Figure 1, Figure 2 and shown in Fig. 5, including is successively connected Logical device for producing hydrogen, for example, hydrogen generator includes first shell 6 and nested second shell 5 in the inner, the first shell The first accommodating space 6-1 for accommodating hydrogen is formed between 6 and second shell 5, the second shell 5 includes the second accommodating inner cavity 5-1 and the inlet 1 for being connected to and being set in the second shell 5 with the second accommodating inner cavity 5-1；In the present embodiment, First shell 6 is outer sleeve, and second shell 5 is inner sleeve, specifically, inlet 1 is equipped with above inner sleeve, is set inside inner sleeve Have it is as shown in FIG. 6 be curled into columned porous catalyst with rectangle, gas vent 6-2, housing are equipped with above outer sleeve Cylinder lower section is equipped with leakage fluid dram；

Catalyst elements 18 are filled in the second accommodating inner cavity 5-1, and catalyst elements 18 include carrier layer and are carried on it On catalyst layer, carrier layer curls into several fuel circulation passage 18-1, and fuel enters the second accommodating inner cavity from inlet 1 5-1, and hydrogen is generated with catalyst layer contacts during flowing through fuel circulation passage 18-1, hydrogen enters the first accommodating In space.In the present embodiment, carrier layer is foam nickel layer, and catalyst layer is Co-P-B three-element catalytic oxidant layer；Specifically, as schemed Shown in 6, catalyst elements 18 are cylindric catalyst cartridge.

In above-mentioned preparing hydrogen by sodium borohydride hydrolysis device, catalyst elements 18 are filled in the second accommodating inner cavity 5-1, this is urged Agent unit includes the catalyst layer of carrier layer and load thereon, and carrier layer curls into several fuel circulation passage 18-1, In addition the second accommodating inner cavity 5-1 is smaller relative to the first accommodating inner cavity 6-1 sectional area, and fuel enters the second accommodating from inlet 1 Inner cavity 5-1, and with catalyst layer contacts during flowing through fuel circulation passage 18-1, contact path is longer at this time, can protect Hold the characteristics such as the higher temperature for being conducive to that hydrogen reacts, keeps reaction more rapidly and abundant.First shell 6 and embedding is set simultaneously The second shell 5 of set in the inner, forms the first accommodating space 6-1 for accommodating hydrogen between first shell 6 and second shell 5, First accommodating space 6-1 sectional area is larger, to slow down air velocity, the first accommodating space 6-1 is conducive to heat dissipation, benefit in addition It is turned back with air-flow and carries out gas-liquid separation with gravity, improved separative efficiency, ultimately provide preparing hydrogen by sodium borohydride hydrolysis device energy Density and power density, and its long-term stable work can be made.

As shown in fig. 7, further including purification device, including the reflux unit 12 and gas washing unit 17 being sequentially communicated, reflux is single Member 12 is connected to the first accommodating space 6-1, such as the first air inlet 8 of reflux unit 12 is connected to the first accommodating space 6-1, hydrogen Gas comes out from the first accommodating space 6-1, and flows successively through reflux unit 12 and gas washing unit 17；Along reflux unit 12 and gas washing list The axial direction of member 17, several perforated baffles 11 are arranged in intracavitary interval in reflux unit 12 and gas washing unit 17；Second solenoid valve 9, It is set between reflux unit 12 and gas washing unit 17, specifically, reflux unit 12 and gas washing unit 17 pass through connecting pipeline 15 Connection, reflux unit 12 are return pipe, and gas washing unit 17 is scrubber tube, and second solenoid valve 9 is check valve, are prevented in scrubber tube Washing lotion is back to return pipe, and then is back to hydrogen generator, leads to catalyst inactivation；More specifically, return pipe is one section big About diameter 2cm, long 10cm, top and bottom have the straight pipe of perforated baffle, and scrubber tube is about diameter 4cm, long 20cm, top Portion and bottom have the straight pipe of perforated baffle, and scrubber tube is provided with high price weak acid and the mixed liquor of middle strong acid is gone as gas washing liquid Except the alkaline matter in hydrogen, for example, by using concentration than tartaric acid and phosphoric acid mixed liquor for 3:1, liquid level is apart from scrubber tube The distance of second gas outlet 10 is 8cm, prevents liquid level excessively close, and partially liq enters gas outlet when vacuole is broken, hence into combustion Expect battery stack, damages fuel cell pile.

By above-mentioned setting, the hydrogen of generation is reacted after the first accommodating inner cavity 6-1 gas-liquid separation, it is single to flow successively through reflux The purification device that member 12 and gas washing unit 17 form, completes hydrogen impurity and purification.Along the axis of reflux unit 12 and gas washing unit 17 To several perforated baffles 11 are arranged in intracavitary interval in the two, hydrogen are dispersed into many minute bubbles by the baffle 11, significantly Increase specific surface area, promotes removal of impurities and radiating efficiency, keep gas purification efficiency higher.

Embodiment 2

The present embodiment provides a kind of preparing hydrogen by sodium borohydride hydrolysis devices, on the basis of above-described embodiment 1, as shown in figure 3, In order to which the gas to the first accommodating space carries out gas-liquid separation, it effectively prevent solution to enter purification device with gas, improves and be The reaction efficiency and stability of system further include primary purifying unit 2, are set between the first accommodating space 6-1 and purification device, So that the hydrogen in the first accommodating space 6-1 enters in purification device after the purification of primary purifying unit 2；Specifically, primary Clean unit 2, including close to the first accommodating space 6-1 and the air outlet section that communicates therewith；And it is filled in porous resistance in air outlet section Strong base material layer, for example, porous resistance to strong base material nickel foam, air outlet section caliber can not be too small, and otherwise drop is easy blocking nozzle Make to produce gas rich in a large amount of alkali droplets；Also can not be excessive, otherwise filtering material can be due to the excessive a large amount of absorption near exits of volume Alkali droplet, it is contemplated that the volume of device for producing hydrogen, air outlet section are in charge of diameter using two.

Embodiment 3

The present embodiment provides a kind of preparing hydrogen by sodium borohydride hydrolysis devices to further include on the basis of above-described embodiment 1 or 2 Liquid storage unit 20, for example, fuel cavity inside hold fuel, and are connected to inlet 3；

Supply unit 13, for example, infusion pump, preferably miniature peristaltic pump, are precisely controlled amount of infusion, are set to liquid storage unit Between 20 and inlet 3, fuel is delivered in the first accommodating space 6-1 from liquid storage unit 20；

More specifically, liquid storage unit 20 includes the cubic type shell of built-in fuel cavity, cube as shown in Fig. 1,2 or 4 Have on shell body side towards fuel cavity recess, the groove for placing gas washing unit 17；Hydrogen generator is ipsilateral with groove And be arranged close to cubic type housing central section, reflux unit 12 is arranged in the upper end of first shell 6, and waste collection unit is arranged in lower end 16, it may be, for example, waste liquid chamber；Cubic type shell opposite side is arranged fuel cell pile 21, the hydrogen of fuel cell pile 21 into Mouth is connected to the hydrogen outlet of gas washing unit 17.

Further, further include heat-sink unit 7, along the axial direction of first shell 6, be arranged at intervals in first shell 6；First Blowing unit 14 is set to one side close to heat-sink unit 7, to dry towards heat-sink unit 7；Specifically, heat-sink unit 7 is scattered Backing；First blowing unit 14 is fan.

Embodiment 4

The present embodiment provides a kind of preparing hydrogen by sodium borohydride hydrolysis devices also to wrap on the basis of above-described embodiment 1,2 or 3 Liquid outlet 3 is included, is oppositely arranged with the inlet, and is connected to second accommodating inner cavity；

Liquid collecting unit 19, for example, conical hopper are set between first shell 6 and liquid outlet 3, after collecting reaction Fuel, and be discharged from liquid outlet 3；

Waste collection unit 16, for example, waste liquid chamber are connected to the liquid outlet 3, so that the fuel after reaction enters institute State waste collection unit 16；

First solenoid valve 4, is set between liquid collecting unit 19 and liquid outlet 3 or the liquid outlet 3 and the waste collection Between unit 16.

The device is pumped into device for producing hydrogen inner sleeve by sodium borohydride solution, from fuel cavity, and inner sleeve is provided with by rectangle It is curled into columned porous catalyst, in the outer sleeve initial gross separation of device for producing hydrogen, waste reaction solution passes through for the reactant of generation Lower section leakage fluid dram is discharged into waste liquid chamber, reacts the hydrogen of generation from the gas outlet above device for producing hydrogen outer sleeve, through return pipe, gas washing Enter in fuel cell after pipe purified treatment.The utility model is high with energy density, power density is high, work long hours stabilization The advantages that safe, compact-sized, the hydrogen source particularly suitable as packaged type fuel cell.

Test example

One, using above-mentioned preparing hydrogen by sodium borohydride hydrolysis device carry out test process it is as follows: using the micro- of flow velocity 4ml/min The sodium hydroxide solution of the sodium borohydride of 20% mass fraction and 5% mass fraction is passed through in device for producing hydrogen by type peristaltic pump, control Device processed opens peristaltic pump when being lower than 50kpa, closes peristaltic pump peristaltic pump when being higher than 50kpa pressure；Drain electricity is kept when lower than 70kpa Magnet valve is normally closed, opens draining solenoid valve 0.1 second when being higher than 70kpa；In addition, every 15 seconds enforced opening draining solenoid valves 0.1 Second.

Test result is as follows: under the 8h working time, consuming solution 1248ml, hydrogen-producing speed 1.4L/min does not have found defeated Power decreased significantly out and liquid level rises only 0.5cm in scrubber tube.It is effective to prove that the device for producing hydrogen long-time hydrogen manufacturing is stablized.Again Drexel bottle will be passed through by the purified hydrogen of purification device, the water pH in drexel bottle does not have significant change, maintains 7 left sides always It is right, it was demonstrated that the long-time stable of the hydrogen purification device is effective.

Secondly, tested using the sodium borohydride solution of 30% mass fraction.Test result is as follows: the 8h working time Under, solution 823ml, hydrogen-producing speed 1.4L/min are consumed, liquid level rises only 0.4cm in scrubber tube.But used 30% matter The sodium borohydride solution of score is measured, essentially sodium borohydride saturated solution passes through drain after device for producing hydrogen reacts at normal temperature Solenoid valve is discharged into waste liquid chamber, temperature decline, and reaction product is easily precipitated, and is easy blocking drain line and occupies waste liquid cavity space, Thermal insulation material coating leakage fluid dram to waste liquid lumen road can be used, and the ethylene glycol solution of 5% mass fraction is added in waste liquid chamber, is prevented Crystallization is precipitated in waste liquid.

Thirdly, remove return pipe, device for producing hydrogen gas outlet is directly connected with second solenoid valve.Test result is as follows: 2h work Make under the time, scrubber tube liquid level rises nearly 8cm, has been unable to complete gas washing task, need to stop working, and replaces scrubber tube.

Four, remove cooling fin and radiator fan.Test result is as follows: under the 8h working time, scrubber tube liquid level rises 4cm Left and right, scrubber system work reluctantly, and gas washing liquid liquid level is excessively high, and easily partially acidic gas washing liquid occur enters gas circuit, such as the device for producing hydrogen As the hydrogen source of fuel cell, fuel cell pile easy to damage.

Five, the length for changing catalyst unit, is divided into three groups, catalyst elements length is respectively 1cm, 3cm and 5cm, is adopted With the sodium borohydride solution of 15% mass fraction, presses in flow velocity height and carry out the test of hydrogen generation rate.Test result such as Fig. 8 Shown, dotted line is the sodium borohydride solution theory hydrogen generation rate line of 15% mass fraction, under catalyst unit 5cm length, together Equal feed liquors flow hydrogen generation rate highest, reaction efficiency highest, in feed liquor flow velocity 2.0ml/min or so, speed occurs for hydrogen Rate is substantially completely carried out up to 1800ml/min, reaction, and reaction efficiency is higher, and hydrogen-producing speed is higher, and energy waste is less.

Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or It changes among the protection scope created still in the utility model.

Claims (10)

1. a kind of preparing hydrogen by sodium borohydride hydrolysis device, including hydrogen generator, which is characterized in that the hydrogen generator includes,

First shell and nested second shell in the inner, form between the first shell and the second shell for accommodating hydrogen First accommodating space of gas, the second shell include the second accommodating inner cavity and are connected to and are set to second accommodating inner cavity Inlet in the second shell；

Catalyst elements, be filled in it is described second accommodating in it is intracavitary, the catalyst elements include carrier layer and load thereon Catalyst layer, the carrier layer curls into several fuel circulation passages, and fuel enters described second from the inlet and holds Inner cavity is set, and generates hydrogen with the catalyst layer contacts during flowing through the fuel circulation passage, hydrogen enters institute It states in the first accommodating space.

2. preparing hydrogen by sodium borohydride hydrolysis device according to claim 1, which is characterized in that further include,

Purification device, including the reflux unit and gas washing unit being sequentially communicated, the reflux unit and first accommodating space Connection, hydrogen comes out from first accommodating space, and flows successively through the reflux unit and gas washing unit；

Along the axial direction of the reflux unit and gas washing unit, intracavitary interval setting is several in the reflux unit and gas washing unit Perforated baffle；

Second solenoid valve is set between the reflux unit and gas washing unit.

3. preparing hydrogen by sodium borohydride hydrolysis device according to claim 2, which is characterized in that further include,

Primary purifying unit is set between first accommodating space and the purification device, so that first accommodating is empty Interior hydrogen enters in the purification device after the purification of the primary purifying unit.

4. preparing hydrogen by sodium borohydride hydrolysis device according to claim 3, which is characterized in that the primary purifying unit includes Close first accommodating space and the air outlet section communicated therewith；And it is filled in the porous resistance to strong base material in the air outlet section Layer.

5. the preparing hydrogen by sodium borohydride hydrolysis device according to any one of claim 2-4, which is characterized in that further include,

Liquid storage unit inside holds fuel, and is connected to the inlet；

Supply unit is set between the liquid storage unit and inlet, fuel is delivered to from the liquid storage unit described In first accommodating space.

6. preparing hydrogen by sodium borohydride hydrolysis device according to claim 5, which is characterized in that the second solenoid valve is unidirectional Valve；The supply unit is peristaltic pump.

7. preparing hydrogen by sodium borohydride hydrolysis device according to claim 6, which is characterized in that the liquid storage unit includes built-in The cubic type shell of fuel cavity has on cubic type shell side towards fuel cavity recess, for placing State the groove of gas washing unit；

The hydrogen generator and the ipsilateral and close cubic type housing central section of the groove are arranged, the first shell The reflux unit is arranged in upper end, and waste collection unit is arranged in lower end.

8. preparing hydrogen by sodium borohydride hydrolysis device according to any one of claim 1-3, which is characterized in that further include,

Heat-sink unit is arranged at intervals in the first shell along the axial direction of the first shell；

First blowing unit is set to one side close to the heat-sink unit, to dry towards the heat-sink unit.

9. preparing hydrogen by sodium borohydride hydrolysis device according to claim 8, which is characterized in that the heat-sink unit is heat dissipation Piece；

The first shell is outer sleeve；

The second shell is inner sleeve；

The carrier layer is foam nickel layer, and the catalyst layer is Co-P-B three-element catalytic oxidant layer；

First blowing unit is fan.

10. preparing hydrogen by sodium borohydride hydrolysis device according to any one of claim 1-3, which is characterized in that further include,

Liquid outlet is oppositely arranged with the inlet, and is connected to second accommodating inner cavity；

Liquid collecting unit is set between the first shell and liquid outlet, to collect the fuel after reaction, and from the liquid outlet Discharge；

Waste collection unit is connected to the liquid outlet, so that the fuel after reaction enters the waste collection unit；

First solenoid valve, is set between the liquid collecting unit and liquid outlet or the liquid outlet and the waste collection unit Between.