CN209411767U - A kind of hydrogen production system employing reforming technology based on Fe-Cr-Al wire cluster carrier - Google Patents
A kind of hydrogen production system employing reforming technology based on Fe-Cr-Al wire cluster carrier Download PDFInfo
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- CN209411767U CN209411767U CN201822189756.1U CN201822189756U CN209411767U CN 209411767 U CN209411767 U CN 209411767U CN 201822189756 U CN201822189756 U CN 201822189756U CN 209411767 U CN209411767 U CN 209411767U
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Abstract
The utility model discloses a kind of hydrogen production system employing reforming technologies based on Fe-Cr-Al wire cluster carrier, reforming reactor, it is axially spaced on its internal perisporium that retention bead is distributed with, the entrance and exit of reforming reactor is provided with the axial ends of reforming reactor, and retention bead is in the leptospira structure from entrance to outlet precession；Fe-Cr-Al wire, it is arranged to flexible cylindrical metal filament, between 0.02mm~2mm, Fe-Cr-Al wire is filled in inside reforming reactor the diameter of Fe-Cr-Al wire in the form of cluster, and porosity of the formed cluster of Fe-Cr-Al wire in reforming reactor is 60-85%；Catalyst coat, uniform fold form Fe-Cr-Al wire cluster carrier in the outer surface of Fe-Cr-Al wire, and for the catalyst coat thickness of Fe-Cr-Al wire outer surface between 0.01mm~1mm, Fe-Cr-Al wire cluster carrier periphery and retention bead are inconsistent.The utility model solves the technical problem of catalyst reliability deficiency selected by existing methanol steam reforming device.
Description
Technical field
The utility model relates to hydrogen production from methanol-steam reforming technical fields, and more specifically, the utility model relates to one
Hydrogen production system employing reforming technology of the kind based on Fe-Cr-Al wire cluster carrier.
Background technique
Fuel cell is considered as the automobile-used dynamic of the following great application potential because of the advantages that its use process efficient pollution-free
Power source.Currently, the main source of Vehicular hydrogen is by liquid fuel hydrogen making.Wherein, hydrogen production from methanol-steam reforming, because
Its higher production hydrogen rate, mature technical matters are widely applied in vehicle-mounted fuel cell system.Vehicle-mounted methanol reformation hydrogen production
System usually consists of the following components: heat exchanger (gasification, heat transfer etc.), combustion chamber, reforming reactor, clean room etc., in order to
Improve the gravimetric specific power and volumetric specific power of fuel cell system, it is necessary to improve the weight and volume of hydrogen generating system part
Integrated level, the weight and volume diminution of reforming reactor are wherein unusual the key links.
Currently, mature catalyst selected by methanol steam reforming device is solid granular catalyst, such catalyst exists
Under vehicle environment, the factors such as vibrated and alternating hot and cold influence, and are easy to dusting, in addition, the radial direction mixing of heat is bad, can cause
Catalyst hot-spot generates adverse effect, causes rapid catalyst deactivation.For coating type microreactor, although micro- reaction
Device has many advantages, such as bigger serface, flash heat transfer, but microreactor machine-shaping is difficult, and economy is not high.
Utility model content
One purpose of the utility model is to solve at least the above problems, and provide the advantages of at least will be described later.
The utility model is to provide a kind of hydrogen production system employing reforming technology based on Fe-Cr-Al wire cluster carrier there are one purpose,
In reforming reactor, the structure of Fe-Cr-Al wire catalyst carrier and the shape of reactor wall are similar, can fill reactor
Inner space.Pd-ZnO/Al is coated on the surface of Fe-Cr-Al wire carrier2O3Catalyst, methanol and vapor gaseous mixture enter anti-
It answers in device and is reacted, the gas of generation is discharged from reactor outlet, solves and urges selected by existing methanol steam reforming device
The technical problem of agent reliability deficiency.
In order to realize these purposes and other advantages according to the present utility model, provide a kind of based on Fe-Cr-Al wire cluster
The hydrogen production system employing reforming technology of carrier, comprising:
Reforming reactor, it is axially spaced on internal perisporium to be distributed with retention bead, the entrance of the reforming reactor and
Outlet is provided with the axial ends of the reforming reactor, and the retention bead is in the conveyor screw from the entrance to outlet precession
Structure；
Fe-Cr-Al wire, is arranged to flexible cylindrical metal filament, and the diameter of the Fe-Cr-Al wire exists
Between 0.02mm~2mm, the Fe-Cr-Al wire is filled in inside the reforming reactor in the form of cluster, the Fe-Cr-Al wire
Porosity of the formed cluster in the reforming reactor is 60-85%；
Catalyst coat, uniform fold forms Fe-Cr-Al wire cluster carrier in the outer surface of the Fe-Cr-Al wire, described
The catalyst coat thickness of Fe-Cr-Al wire outer surface is between 0.01mm~1mm, the Fe-Cr-Al wire cluster carrier periphery
It is inconsistent with the retention bead.
Preferably, the diameter of the Fe-Cr-Al wire is 0.15-0.5mm.
Preferably, the catalyst coat is Pd-ZnO/Al2O3Catalyst coat, the Fe-Cr-Al wire outer surface it is described
Catalyst coat thickness is in 0.03-0.1mm.
Preferably, the Fe-Cr-Al wire cluster carrier in stereoeffect and be uniformly filled in the entrance and exit it
Between the reforming reactor in.
Preferably, porosity of the Fe-Cr-Al wire cluster in the reforming reactor is 65-75%.
Preferably, porosity of the Fe-Cr-Al wire cluster carrier in the reforming reactor is 70-85%.
Preferably, the axial ends of the reforming reactor is closed with removable end cap respectively, the entrance and exit point
It Guan Chuan not be provided on the corresponding end cap.
Preferably, the retention bead is not less than the width of the retention bead, and the limit in axial spacing distance
Position protrusion keeps smooth at axial interval position.
Preferably, uniform fold has the catalyst coat, the reforming reactor on the reforming reactor internal perisporium
The catalyst coat thickness on internal perisporium is in 0.05-0.2mm.
The utility model is include at least the following beneficial effects:
1, the Fe-Cr-Al wire cluster carrier of the utility model, the reliability not only having with coated catalysts, simultaneously
Also there is comparable advantage in economy；
2, catalyst surface area is big, and coverage rate is high, improves the catalytic effect and efficiency to hydrogen production reaction；
3, the binding force of catalyst coat and Fe-Cr-Al wire cluster is high, not easy to crack and fall off；
4, it is also coated with catalyst coat on reforming reactor internal perisporium, improves catalytic efficiency；
5, reforming reactor internal perisporium protrudes above the retention bead for being provided with helical structure, Fe-Cr-Al wire cluster carrier periphery
It contradicts in retention bead, plays the role of fixed Fe-Cr-Al wire cluster carrier, avoid the progress with reaction, ferrum-chromium-aluminum clusters
The compressive deformation in reforming reactor of cluster carrier reduces the spatial volume of Fe-Cr-Al wire cluster carrier.
The further advantage, target and feature of the utility model will be partially reflected by the following instructions, and part will also pass through
Research and practice to the utility model and be understood by the person skilled in the art.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of reforming reactor；
Fig. 2 is mounting structure schematic diagram of this Fe-Cr-Al wire cluster carrier in reforming reactor；
Fig. 3 is the cross-sectional view of coating and Fe-Cr-Al wire.
Specific embodiment
The following describes the utility model in further detail with reference to the accompanying drawings, to enable those skilled in the art referring to explanation
Book text can be implemented accordingly.
It should be appreciated that such as " having ", "comprising" and " comprising " term used herein do not allot one or more
The presence or addition of a other elements or combinations thereof.
The object of the utility model protection is hydrogen production system employing reforming technology itself, and the improvement of dependency structure specifically in system is real
The claimed object of the not instead of the utility model of preparation process involved in example is applied, in order to allow the ordinary skill people of this field
Member can better understand and can implement and disclosed technical solution.
As shown in Figure 1-3, a kind of hydrogen production system employing reforming technology based on Fe-Cr-Al wire cluster carrier, including reforming reactor, peace
Fe-Cr-Al wire 21 and catalyst coat 22 in reforming reactor, in which: the axial ends of the reforming reactor is distinguished
It is closed with removable end cap 4, the entrance 1 of the reforming reactor is provided with the axial ends of the reforming reactor with outlet,
Specifically, reforming reactor entrance 1 and outlet 3 are extended through and are provided on the corresponding end cap 4, so that and reforming reactor
Inside connection.
Axially spaced on reforming reactor internal perisporium 5 that retention bead 51 is distributed with, the retention bead 51 is in from described
Entrance 1 to outlet 3 precessions leptospira structure.
Fe-Cr-Al wire 21 is arranged to flexible cylindrical metal filament, and the Fe-Cr-Al wire 21 is in the form of cluster
It is filled in inside a reforming reactor.As shown in Fig. 2, specifically, Fe-Cr-Al wire 21 can be prepared voluntarily or directly be bought, it is described
The ideal noise diode of Fe-Cr-Al wire 21 is 0.2mm, can not actually accomplish that thickness is uniform, therefore by the diameter of the Fe-Cr-Al wire 21
Control uniformly fills Fe-Cr-Al wire 21 to reforming reactor from the end of reforming reactor in 0.15-0.3mm, so that
21 cluster of Fe-Cr-Al wire, which is formed, has stable stereoeffect, improves the surface area of 21 cluster of Fe-Cr-Al wire entirety, avoids
21 cluster collapse-deformation of Fe-Cr-Al wire reduces filling rate inside reforming reactor, that is, reduce catalyst with react
The contact surface of agent, the final output efficiency for reducing catalytic efficiency and hydrogen.
21 cluster of Fe-Cr-Al wire is uniformly filled in reforming reactor, and reforming reactor is filled up completely, and
When filling, porosity of 21 cluster of Fe-Cr-Al wire in reforming reactor is controlled, so that in no coating catalyst coat, institute
Stating porosity of the formed cluster of Fe-Cr-Al wire 21 in reforming reactor is 65-75%.
21 cluster of Fe-Cr-Al wire is retained in a period of time inside reforming reactor, so that 21 cluster of Fe-Cr-Al wire is substantially fixed
It is taken out from reforming reactor after type, 21 cluster of Fe-Cr-Al wire keeps tying with reforming reactor inner space substantially after taking-up
Structure is consistent, plates catalyst to 21 cluster of Fe-Cr-Al wire later.
As shown in figure 3,22 uniform fold of catalyst coat is in the outer surface of the Fe-Cr-Al wire 21, shape after catalyst plates
At the Fe-Cr-Al wire cluster carrier 2 for being coated with catalyst coat, in the present embodiment, catalyst coat 22 is Pd-ZnO/Al2O3Catalysis
Agent coating controls the thickness of the catalyst coat 22 in 0.03-0.1mm, and Fe-Cr-Al wire is completely covered in catalyst coat 22
The outer surface of 21 clusters.
It is as follows that catalyst is plated in the process on Fe-Cr-Al wire:
The diameter for winding iron-chromium-aluminum metal silk is 0.2mm, and porosity of the formed cluster in the reforming reactor is
There is the coating of catalyst very big in 60-85%, this compact texture.
For this purpose, having adjusted the concentration of catalyst pulp in the utility model, it is allowed to be easier to feeding.Specifically, will oxidation
Aluminum nano material and concentrated nitric acid solution, deionized water mixing, alumina powder: concentrated nitric acid: deionized water=1g:1ml:4ml is stirred
It mixes to form colloid, after 1 hour, iron-chromium-aluminum metal clusters cluster is repeatedly impregnated in the slurry, is lifted, is air-dried, 100 DEG C of dryings
It 10 hours, is calcined 2 hours in 500 DEG C, is cooled to room temperature, aluminum oxide coating layer can be obtained in iron-chromium-aluminum metal silk outer surface.
Active component is uploaded using infusion process, by the above-mentioned iron-chromium-aluminum metal silk for being coated with aluminum oxide coating layer active
Repeatedly impregnate, air-dry in the mixed liquor of component, 100 DEG C drying 10 hours, mixed liquor be certain density zinc nitrate and palladium chloride
The Pd:Zn molar ratio of mixed solution, the zinc nitrate and palladium chloride mixed solution is 1:10.
Then it is calcined 2 hours in 500 DEG C, is cooled to room temperature, Pd-ZnO/Al can be obtained in iron-chromium-aluminum metal silk outer surface2O3
Catalyst coat, i.e. Fe-Cr-Al wire cluster carrier 2.
The thickness of obtained catalyst coat is probably at 50 μm, even compact, the hole after coating catalyst coating
Rate is almost without decline.
The Fe-Cr-Al wire cluster carrier 2 after drying is reloaded to reforming reactor later, because of ferrum-chromium-aluminum before
Clusters cluster space structure and reforming reactor internal structure are consistent, therefore convenient for Fe-Cr-Al wire cluster carrier 2 is intact uniformly
Loading to reforming reactor inside, later the axial ends of reforming reactor with end cap 4 seal.
As shown in Fig. 2, the Fe-Cr-Al wire cluster carrier 2 is in stereoeffect and is uniformly filled in the reforming reaction
Between the entrance 1 of device and outlet 3, that is, reaction road Fe-Cr-Al wire cluster carrier 2 being placed in entire reforming reactor
On diameter, guarantee circulation on the basis of, improve surface area of the catalyst in reforming reactor, that is, increase methanol,
The effective contacting travel and area of vapor and catalyst improve catalytic effect, final to improve hydrogen manufacturing effect.
In above-mentioned technical proposal, after coating the catalyst coat 22, the Fe-Cr-Al wire cluster carrier 2 is in the reformation
Porosity in reactor is 70-85%, ensure that the porosity in reforming reactor, while effectively improving methanol, vapor
With the contact area and stroke of catalyst, while the indoor gas circulation of reforming reactor is not influenced, avoid in reforming reaction
Building the pressure in device causes hydrogen production efficiency to decline.
In order to further increase methanol, vapor and the contact area of catalyst, reaction efficiency is improved, the present embodiment is in institute
Stating uniform fold on reforming reactor internal perisporium 5 has the catalyst coat, and reforming reactor internal perisporium 5 includes retention bead 51
On axial 51 surface of 52 surface of interval position and retention bead.
The coating method of catalyst are as follows: nanosized zirconia powder and concentrated nitric acid solution, deionized water will be mixed, aluminium oxide
Powder: concentrated nitric acid: deionized water=1g:1ml:4ml, stirring form colloid, after 1 hour, colloid are poured into from entrance 1 to reformation
In reactor, by the horizontal slowly uniform rotation that comes of reforming reactor, so that colloid sufficiently connects with reforming reactor internal perisporium 5
Touching, and uniform fold multiplies heat later and pours extra colloid from outlet 3 on reforming reactor internal perisporium 5.
Then by reforming reactor air-dry, 100 DEG C drying 10 hours, in 500 DEG C calcining 2 hours, be cooled to room temperature, Ji Ke
Aluminum oxide coating layer is formed on reforming reactor internal perisporium 5.In above-mentioned manufacturing process, control colloid is stagnant in reforming reactor
The velocity of rotation of time and reforming reactor is stayed, so that the thickness of aluminum oxide coating layer is in 0.05mm on reforming reactor internal perisporium 5
Left and right.
To have certain density zinc nitrate and palladium chloride mixed solution later, pour into reforming reactor, will reform
The horizontal slowly uniform rotation that comes of reactor, so that mixed solution comes into full contact with reforming reactor internal perisporium 5, and uniform fold
On reforming reactor internal perisporium 5, extra mixed solution is poured from outlet 3 later, is air-dried, 100 DEG C of dryings 10
Hour, reforming reactor is calcined 2 hours in 500 DEG C then, is cooled to room temperature, can be obtained on reforming reactor internal perisporium 5
Pd-ZnO/Al2O3Catalyst coat.
Above-mentioned mixed liquor is certain density zinc nitrate and palladium chloride mixed solution, and the zinc nitrate and palladium chloride mixing are molten
The Pd:Zn molar ratio of liquid is 1:10.
In above-mentioned manufacturing process, the rotation of residence time and reforming reactor of the mixed liquor in reforming reactor are controlled
Speed, so that finally formed Pd-ZnO/Al on reforming reactor internal perisporium 52O3Catalyst coat thickness is in 0.05-0.2mm.
Pd-ZnO/Al is formed on reforming reactor internal perisporium 52O3After catalyst coat, methanol, vapor and catalysis are further increased
The contact area of agent improves the reaction efficiency of hydrogen manufacturing.
In above-mentioned technical proposal, the retention bead 51 is in axial spacing distance, that is, retention bead 51 is in axial direction
Interval position 52 be not less than the width of the retention bead 51, and the retention bead 51 is kept at axial interval position 52
It is smooth, avoid interval position 52 from forming the dead angle of a recess, so that vapor forms the liquid water of accumulation at the position 52 of interval,
The water for not only making middle moisture in reforming reactor excessive, and gathering can cover the catalyst figure layer on the position 52 of interval, reduce
Reaction efficiency.
In the actual production process, can be vertically-mounted by reforming reactor, entrance 1 upper, outlet 3 under, at this point, by
It, can will likely be on reforming reactor internal perisporium 5 from the entrance 1 to the drainage of the leptospira structure of 3 precessions of outlet
It is enriched with the liquid water formed to come out along the interval outside water conservancy diversion in position 52, reduces the humidity in reforming reactor, while reducing liquid
Covering of the state water to catalyst figure layer improves whole hydrogen production reaction efficiency.
When reforming reactor is transversely mounted, as long as reforming reactor is tilted a certain angle installation to 3 ends of outlet,
It is that 1 end of entrance is slightly higher, 3 ends of outlet are slightly lower, while around axial slow rotation reforming reactor, can will be in whole reactor inner circumferential
The liquid water that formation is enriched on wall 5 comes out along the interval outside water conservancy diversion in position 52.
From the above mentioned, the utility model exists with hydrogen production from methanol-steam reforming used catalyst difference in the prior art
In being the Fe-Cr-Al wire catalytic clusters carrier 2 of stereochemical structure, the Fe-Cr-Al wire in reforming reactor used in the utility model
The structure of catalytic clusters carrier 2 and the shape of reactor wall are similar, can fill the inner space of reactor, to improve iron
The spatial distribution rate of chrome-aluminium wire catalytic clusters carrier 2 indoors.On the surface of 21 carrier of Fe-Cr-Al wire with space structure
Coated with Pd-ZnO/Al2O3Catalyst, methanol and vapor gaseous mixture, which enter in reactor, to be reacted, and the gas of generation is from anti-
Device outlet discharge is answered, hydrogen production efficiency is improved.
Specifically, the Fe-Cr-Al wire cluster carrier of the utility model, the reliability not only having with coated catalysts,
Also there is comparable advantage in economy simultaneously, it is at low cost；Catalyst coat and Fe-Cr-Al wire carrier binding force are high, so that catalysis
Agent coating and Fe-Cr-Al wire carrier be not easy to crack and fall off, and catalyst surface area is big, and coverage rate is high, improves to hydrogen production reaction
Catalytic effect and efficiency.
It is also being coated with catalyst coat on reforming reactor internal perisporium simultaneously, is further increasing the catalytic efficiency of reaction；
And reforming reactor internal perisporium protrudes above the retention bead for being provided with helical structure, Fe-Cr-Al wire cluster carrier periphery contradicts and is limiting
In the protrusion of position, plays the role of fixed Fe-Cr-Al wire cluster carrier, avoid the progress with reaction, Fe-Cr-Al wire cluster carrier exists
Compressive deformation in reforming reactor reduces the spatial volume of Fe-Cr-Al wire cluster carrier, that is, the surface area of catalyst.
It can be seen that the hydrogen production system employing reforming technology based on Fe-Cr-Al wire cluster carrier of the utility model, hydrogen production efficiency is more preferable,
Reaction efficiency is more preferable, better reliability.
It is not only in the description and the implementation although the embodiments of the present invention have been disclosed as above
Listed utilization, it can be applied to various fields suitable for the present invention completely, for those skilled in the art,
Other modifications may be easily implemented, therefore without departing from the general concept defined in the claims and the equivalent scope, this reality
It is not limited to specific details and legend shown and described herein with novel.
Claims (9)
1. a kind of hydrogen production system employing reforming technology based on Fe-Cr-Al wire cluster carrier characterized by comprising
Reforming reactor, it is axially spaced on internal perisporium that retention bead, the entrance and exit of the reforming reactor is distributed with
It is provided with the axial ends of the reforming reactor, the retention bead is in the conveyor screw knot from the entrance to outlet precession
Structure；
Fe-Cr-Al wire, is arranged to flexible cylindrical metal filament, the diameter of the Fe-Cr-Al wire 0.02mm~
Between 2mm, the Fe-Cr-Al wire is filled in inside the reforming reactor in the form of cluster, and the Fe-Cr-Al wire forms group
Porosity of the cluster in the reforming reactor is 60-85%；
Catalyst coat, uniform fold form Fe-Cr-Al wire cluster carrier, the siderochrome in the outer surface of the Fe-Cr-Al wire
The catalyst coat thickness of aluminium wire outer surface is between 0.01mm~1mm, the Fe-Cr-Al wire cluster carrier periphery and institute
It is inconsistent to state retention bead.
2. the hydrogen production system employing reforming technology as described in claim 1 based on Fe-Cr-Al wire cluster carrier, which is characterized in that the siderochrome
The diameter of aluminium wire is 0.15-0.5mm.
3. the hydrogen production system employing reforming technology as claimed in claim 2 based on Fe-Cr-Al wire cluster carrier, which is characterized in that the catalysis
Agent coating is Pd-ZnO/Al2O3Catalyst coat, the catalyst coat thickness of the Fe-Cr-Al wire outer surface is in 0.03-
0.1mm。
4. the hydrogen production system employing reforming technology as claimed in claim 3 based on Fe-Cr-Al wire cluster carrier, which is characterized in that the siderochrome
Aluminium wire cluster carrier is in stereoeffect and is uniformly filled in the reforming reactor between the entrance and exit.
5. the hydrogen production system employing reforming technology as claimed in claim 4 based on Fe-Cr-Al wire cluster carrier, which is characterized in that the siderochrome
Porosity of the aluminium wire cluster in the reforming reactor is 65-75%.
6. the hydrogen production system employing reforming technology as claimed in claim 5 based on Fe-Cr-Al wire cluster carrier, which is characterized in that the siderochrome
Porosity of the aluminium wire cluster carrier in the reforming reactor is 70-85%.
7. the hydrogen production system employing reforming technology as described in claim 1 based on Fe-Cr-Al wire cluster carrier, which is characterized in that the reformation
The axial ends of reactor is closed with removable end cap respectively, and the entrance and exit, which extends through, is provided with the corresponding end
It covers.
8. the hydrogen production system employing reforming technology as claimed in claim 7 based on Fe-Cr-Al wire cluster carrier, which is characterized in that the limit
Protrusion is not less than the width of the retention bead in axial spacing distance, and the retention bead is protected at axial interval position
Maintain an equal level whole.
9. the hydrogen production system employing reforming technology as claimed in claim 3 based on Fe-Cr-Al wire cluster carrier, which is characterized in that the reformation
Uniform fold has the catalyst coat, the catalyst coat on the reforming reactor internal perisporium on reactor internal perisporium
Thickness is in 0.05-0.2mm.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113019276A (en) * | 2021-02-05 | 2021-06-25 | 厦门大学 | Flexible micro-reactor for hydrogen production by alcohol reforming |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113019276A (en) * | 2021-02-05 | 2021-06-25 | 厦门大学 | Flexible micro-reactor for hydrogen production by alcohol reforming |
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