CN209143754U - A kind of device of adsorption uranium - Google Patents
A kind of device of adsorption uranium Download PDFInfo
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- CN209143754U CN209143754U CN201821758403.2U CN201821758403U CN209143754U CN 209143754 U CN209143754 U CN 209143754U CN 201821758403 U CN201821758403 U CN 201821758403U CN 209143754 U CN209143754 U CN 209143754U
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Abstract
The utility model provides a kind of device of adsorption uranium, and described device includes the absorbing unit that at least one sets gradually, and the absorbing unit includes the seawater guide layer set gradually, absorption film surface protective layer, adsorption layer；The device of adsorption uranium provided by the utility model, when applied to the extraction of uranium from seawater, can single adsorptions metallic uranium be greater than 6mg/g, it can be subjected to sea washes, temperature change and marine algae and other pollutions, the impact of sea water wave can be especially withstood, circulating repetition is still with good performance using up to a hundred times；The device of adsorption uranium provided by the utility model, energy saving inexpensive, acid and alkali-resistance resisting sea water erosion, leads over traditional such as water pump mode, tide mode technology in the efficiency and technology of protection adsorbent material, has very high application value.
Description
Technical field
The utility model belongs to separation equipment field, is related to a kind of device of adsorption uranium.
Background technique
Uranium resource is the strategic raw material of nuclear undertaking development.According to planning, to the year two thousand twenty China operation nuclear power installation
Capacity is up to 58,000,000 kilowatts, is 30,000,000 kilowatts building nuclear power installed capacity.The year two thousand twenty current year China nuclear power generates electricity as a result,
11500 tons of natural uranium are needed, needs to consume 16400 tons of uranium resource for the year.It is about 100,000 tons that uranium ore reserves have been verified in China, but these
The exploitation relative inefficiencies of uranium ore resource.It is counted according to Bloomberg, China's uranium yield in 2014 is 1500 tons, is far below demand.According to state
The statistics of border International Atomic Energy Agency, global uranium ore resource reserves are 12,380,000 tons, have verified 5,470,000 tons, recent China has been considered as
Main buyer on uranium ore spot market.
Uranium rich in seawater.According to the literature, containing about 4,500,000,000 tons uranium in seawater, is more than the 1000 of land reserves
Times, it is potential natural uranium resource treasure-house.The extraction of uranium from seawater is the technology that atomic energy industry uranium raw material is extracted from seawater.If I
Can from seawater they extract for nuclear power plant power generation if, the enough whole world use 10,000 years.Since half a century,
Global researcher is attempting to extract uranium in ocean, but winner is very few.Because the uranium content in seawater is non-
Normal low (~3.3 μ g/L), this is but also mention uranium as extremely challenging technology.Since the 1960s, Japan, beauty
The country such as state, France is engaged in the research and test of the extraction of uranium from seawater, generally uses three kinds of methods: absorption method, biological concentration method, blistering
Partition method.In recent years, the extraction of uranium from seawater reports that more is Britain and Germany, and other countries' relevant report is less.Compared to Japan and beauty
State, European extraction of uranium from seawater research fall behind relatively.
China starts from the research work of the extraction of uranium from seawater in the 1960s, there has been to extraction of uranium from seawater technology at the beginning of the eighties
Certain basis and level, but interrupted due to some.In recent years, the research of the extraction of uranium from seawater has further progress, state
Third research institute, ocean office, family, Shanghai Applied Physics research institute, the Chinese Academy of Sciences, nuclear industry Beijing Chemical Research Institute and Chinese Sea are big
All in the research for carrying out the extraction of uranium from seawater, overwhelming majority research is still concentrated in the research and development for mentioning uranium material for Xue Deng mechanism.But so far
China not yet establishes uranium from seawater plant.
The core technology of seawater uranium absorption method is adsorbent equipment and adsorbent.Adsorbent equipment should be able to connect with a large amount of seawater
It touches and energy conservation is inexpensive, existing device mainly has: water pump mode；Wave mode: tide mode: wave power mode: film mode.Film side
Formula is exactly that the extraction of uranium from seawater and existing membrane technology are combined together to design the device for being appropriate to safe adsorption uranium in seawater.
Currently, the technology of either Japan or the technique in the U.S., in the extraction of uranium from seawater, they are in practical natural sea water ring
Under border, 6 grams of uranium/every kilogram of adsorbent is also not achieved in the adsorption capacity of adsorbent, uses different, repetition benefit due to adsorbent
Indifferent, away from commercial exploitation, there are also a distances.And China is a uranium ore resource country not very abundant, according to nowadays
The reserves for a collection of Uranium Ore Field that China provides successively to International Atomic Energy Agency calculate that China's uranium ore proved reserves occupy the world the 10th
After position, the long-range needs of Nuclear Power Development are not adapted to.
Uranium concentration in seawater is very low (3~4ppb), and has the competition of coexisting ion.Therefore, the extraction of uranium from seawater be difficulty it is big,
Period is long, comprehensive strong, the pilot study project that involves a wide range of knowledge.The research extraction of uranium from seawater can not only mention to develop new uranium resource
For theoretical foundation and technical foundation, and can enrich Marine Chemistry, surface chemistry, low dense physical chemistry and marine chemical industry and
The content of environmental science, while technical reference will be also provided to the disposition of the three wastes of atomic energy industry and other industry.
CN107475798A discloses a kind of preparation method of nano-fiber material for the extraction of uranium from seawater, including following step
It is rapid: amidoxim polyacrylonitrile will to be obtained after the processing of polyacrylonitrile amidoximization；Using compressed air stream by amidoxim polypropylene
Nitrile solution blow drawing be nanofiber, after collected with reception device；The solution concentration of amidoxim polyacrylonitrile is 5wt%-
20wt%.The method mild condition, process are easy, low in cost, overcome and first prepare polyacrylonitrile fibre amidoximeization modification again
The problems such as caused fiber significant shrinkage, brittle failure, overcome high-temperature fusion heating component and its height complicated in melt-blown process
Energy consumption defect, but the adsorption efficiency of the method is not still high, needs further to be promoted.
CN107138137A discloses a kind of antibiotic property extraction of uranium from seawater adsorbent, by graft copolymerization by quaternary ammonium salt list
Body and acrylonitrile monemer are grafted on natural fiber monomer, are then carried out hydroxylamination and are prepared, gained adsorbent quaternary ammonium group
Content is 0.1~1.0mmol/g, and amidoxime group mass contg is 0.2~7.5mmol/g.In the method, the antibiotic property extraction of uranium from seawater is inhaled
Attached dose of fiber base material abundance, natural reproducible is cheap, and preparation cost is low, and adsorbent material is to Escherichia coli and golden yellow
The staphylococcic bacteriostasis rate of color reaches 95% or more, and relative to regular seawater uranium extraction sorbent, resulting materials are to uranyl ion
Adsorbance increase about 25%, still, the uranium absorption agent that the method provides not can be recycled, relative to the method for UF membrane,
Shortcomings.
CN102614842A discloses a kind of preparation method of chelate fiber adsorbent for extracting uranium from seawater and preparation method for chelate fiber adsorbent, under this method includes
It states step: (1) ultra high molecular weight polyethylene fiber being subjected to radiation treatment, the irradiation bomb is cobalt source or electron beam；(2) by spoke
Ultra high molecular weight polyethylene fiber according to after, which mixes to obtain to be grafted by graft polymerization reaction with the solution containing grafted monomers, gathers
Acrylonitrile modified fiber, the grafted monomers are the mix monomer of pure acrylonitrile or acrylic acid and acrylonitrile, the mix monomer
The molar content of middle acrylic acid and acrylonitrile ratio is less than or equal to 1:2；(3) graft polypropylene nitrile fiber is subjected to amidoximation,
So that cyano is converted into amidoxime group, chelate fibre adsorbent is made.The chelate fibre adsorbent that the method is prepared, inherits
The excellent mechanical property of ultra high molecular weight polyethylene fiber and the performance of adsorption uranium, and prolonged and repeated can be mentioned for seawater
Uranium.But the specific performance of this adsorbent is poor, adsorption efficiency is lower.
Therefore, a kind of adsorbent equipment reusable, adsorption capacity is high, absorption specificity is strong how is developed, for sea
The cost control that water mentions uranium is of great significance, and also has very important significance simultaneously for nuclear power industry, army's industrial expansion.
Utility model content
In view of the deficiencies of the prior art, it the purpose of this utility model is to provide a kind of device of adsorption uranium, especially answers
Uranium in seawater, enabling a device to float and dissociate for a long time in adsorbing seawater, and it is reusable, it reduces seawater and mentions
The cost of uranium provides safeguard ability for nuclear power developing, has very to the Status Quo for improving nuclear power developing of basing on our country
Important meaning.
To reach this purpose of utility model, the utility model uses following technical scheme:
The utility model provides a kind of device of adsorption uranium, and the device of the adsorption uranium includes that at least one sets gradually
Absorbing unit, the absorbing unit include the seawater guide layer set gradually, absorption film surface protective layer, adsorption layer.
The device of adsorption uranium provided by the utility model, be applied to the extraction of uranium from seawater when, can single adsorptions metallic uranium be greater than
6mg/g can be subjected to sea washes, temperature change and marine algae and other pollutions, can especially withstand big seawater
The impact of wave, circulating repetition are still with good performance using up to a hundred times；The device of adsorption uranium provided by the utility model, section
Inexpensive, the acid and alkali-resistance resisting sea water erosion of energy, leads over traditional such as water pump mode, tide in the efficiency and technology of protection adsorbent material
The technologies such as nighttide mode have very high application value.
It is applied in the extraction of uranium from seawater with technique using the form of adsorbed film currently, not studying.
Preferably, the adsorption layer is that adsorbed film is deposited in the layer formed in high molecular material base fabric.
In the present invention, adsorption layer is a kind of composite layer being combined into one, the nanofiber generated by electrostatic spinning
The adsorbed film of formation is deposited in high molecular material base fabric and the composite adsorption layer of formation.
In the present invention, the high molecular material is polyester, polyacrylonitrile, polypropylene, cellulose diacetate or poly-
Any one in vinylidene.
In the present invention, optional high molecular material is not limited to above-mentioned cited type, other high temperature resistant corrosion resistants
The polymer material of erosion can be used as the high molecular material in the utility model adsorption layer, be further used as high molecular material base
Cloth.
In the present invention, the high molecular material can also be to include terylene, polypropylene fibre, polyamide fibre, spandex, acrylic fibers etc.
Fiber by air-flow or mechanical networking, is then passed through spun lacing, needle thorn or hot rolling are reinforced, after finally passing through by staple fiber or long filament
Arrange formed non-woven cloth in any one or at least two combination.
In the present invention, the method for the nano fiber non-woven accumulation in adsorbed film is specially high-voltage electrostatic spinning method.
Through soluble macromolecule slurries under ten thousand volts of electrostatic pressures of 3-7, quickly forming nanoscale has three-dimensional space knot
The superfine fibre of structure.It is small with fiber size, large specific surface area, porosity height and the good advantage of fiber continuity.
In the present invention, adsorbed film is by macromolecule polypropylene nitrile nanofibre, cellulose diacetate nanofiber
Or any one nonwoven in polyvinylidene fluoride nanometer fiber is accumulated.
In the present invention, the thickness of high molecular material base fabric is generally 80~200 μm in adsorption layer, such as can be
80 μm, 90 μm, 100 μm, 110 μm, 120 μm, 130 μm, 140 μm, 150 μm, 160 μm, 170 μm, 180 μm, 190 μm or 200 μm
Deng.
Preferably, the adsorbed film with a thickness of 80 μm~280 μm, such as can be 80 μm, 85 μm, 90 μm, 95 μm,
100μm、105μm、110μm、115μm、120μm、130μm、140μm、150μm、160μm、180μm、190μm、200μm、230μ
M, 250 μm or 280 μm etc..
Preferably, the porosity of the adsorbed film is 72%~85%, for example, can be 72%, 74%, 75%, 78%,
80%, 81%, 82%, 83%, 84% or 85% etc..
In utility model, porosity refers to that the volume of material internal hole accounts for the percentage of material total volume, in material
Portion in addition to hole number other than, the significant condition of hole be also influence its property an important factor for one of.The hole characteristic of material
It shows as, hole is to be closed in material internal, or be in communication with the outside on the surface of material.The former is closed pore, the latter
For open pore.Some holes are divided into independent in material internal, and hole also is interconnected in material internal.This
Outside, the size of pore-size, hole are all feature performance of the hole in material internal in degree that is evenly distributed of material internal etc.,
The hole of adsorbed film is interconnected in material internal in the utility model.High porosity, structure channel, surface electric charge and Gao Bi
Surface area, so that adsorption capacity is stronger, it is more preferable for adsorption uranium effect.
In the present invention, nanofiber diameter formed in protective cover is generally 150nm~220nm, such as
Can be 150nm, 155nm, 160nm, 165nm, 170nm, 175nm, 180nm, 185nm, 190nm, 195nm, 200nm,
205nm, 210nm, 215nm or 220nm etc..
Preferably, the absorption film surface protective layer is polypropylene non-woven layer of cloth.
Preferably, it is described absorption film surface protective layer with a thickness of 0.04~0.1mm, such as can be 0.04mm, 0.05mm,
0.06mm, 0.07mm, 0.08mm, 0.09mm or 0.1mm etc..
Preferably, the grammes per square metre of the polypropylene non-woven layer of cloth is 15g/m2、20g/m2、25g/m2、30g/m2、35g/m2、
40g/m2Or 45g/m2Deng.
Preferably, the seawater guide layer is grid guide layer.
Preferably, the grid guide layer with a thickness of 1mm~4mm, such as can be 1mm, 1.5mm, 2mm,
2.5mm, 3mm, 3.5mm or 4mm etc..
Preferably, the shape of described device includes any one in cylindrical, the rectangle bodily form, spherical or the pyramid bodily form
Kind or at least two combination.
It is further preferred that the shape of described device is the rectangle bodily form or cylindrical.
Illustratively such as, when device is cylindrical, 800~1500mm of root long sea water resistance and acid and alkali-resistance can be used
The tubular material that diameter is 20~50mm is as axis, by absorbing unit edge around covering on this axis, meanwhile, outermost layer is optionally
Acid and alkali-resistance, the composite material of sea water resistance or metal material are wrapped up to increase intensity, the adsorption uranium of cylindrical shape can be obtained
Device.It is detailed in Fig. 2.
For example, when device be cuboid when, several absorbing units can be set in turn in inside metal framework, fold and
At arbitrary height can be made into according to actual needs.Such structure can greatly improve effective adsorption area of adsorption uranium device,
And cost of manufacture is lower, while greatly improving the security performance used in the seawater.It is detailed in Fig. 3.
The device of adsorption uranium provided by the utility model uses in use, can be directly thrown into seawater, convenient succinct, at
This is cheap.
Compared with the existing technology, the utility model has the following beneficial effects:
The device of adsorption uranium provided by the utility model, be applied to the extraction of uranium from seawater when, can single adsorptions metallic uranium be greater than
6mg/g can be subjected to sea washes, temperature change and marine algae and other pollutions, can especially withstand big seawater
The impact of wave, circulating repetition are still with good performance using up to a hundred times；The device of adsorption uranium provided by the utility model, section
Inexpensive, the acid and alkali-resistance resisting sea water erosion of energy, leads over traditional such as water pump mode, tide in the efficiency and technology of protection adsorbent material
The technologies such as nighttide mode have very high application value.
Detailed description of the invention
Fig. 1 is the adsorption uranium apparatus structure schematic diagram that the utility model embodiment 1 provides, and wherein 101- adsorbs film surface protection
Layer, 102- adsorption layer, 103- seawater guide layer.
Fig. 2 is the adsorption uranium apparatus structure schematic diagram that the utility model embodiment 2 provides, and wherein 101- adsorbs film surface protection
Layer, 102- adsorption layer, 103- seawater guide layer.
Fig. 3 is the adsorption uranium apparatus structure schematic diagram that the utility model embodiment 3 provides, and wherein 101- adsorbs film surface protection
Layer, 102- adsorption layer, 103- seawater guide layer.
Specific embodiment
The technical solution of the utility model is further illustrated below by specific embodiment.Those skilled in the art answer
This is illustrated, and the embodiment, which is only to aid in, understands the utility model, is not construed as the concrete restriction to the utility model.
In the utility model following embodiment, adsorption uranium device, specific Static Spinning are prepared by electrostatic spinning technique
The control parameter of strand part is as follows: (voltage ± 3~70,000 volt, 400~2600, spray head, 20~60 inches of door).This field skill
Art personnel can according to conventional technical means according in embodiment and comparative example corresponding film layer thickness and fibre diameter select
It selects.
Embodiment 1
A kind of adsorption uranium device, concrete structure diagram as shown in Figure 1, only include 1 absorbing unit, absorbing unit include according to
Seawater guide layer 103, absorption the film surface protective layer 101, adsorption layer 102 of secondary setting, seawater guide layer 103 is the grid of 1.6mm
Net guide layer, absorption film surface protective layer 101 are 0.05mm thickness, grammes per square metre 30g/m2Polypropylene non-woven layer of cloth, in adsorption layer 102
Adsorbed film with a thickness of 80 μm, porosity 72%, high molecular material base fabric with a thickness of 110 μm, high molecular material is poly- inclined
Vinyl fluoride.
Embodiment 2
A kind of adsorption uranium device, concrete structure diagram is as shown in Fig. 2, absorbing unit is disposed with seawater guide layer 103, inhales
Membrane face protective layer 101, adsorption layer 102, seawater flow to layer 103, absorption film surface protective layer 101 and 102 winding center of adsorption layer
Pipe forms the device of cylindrical shape, and seawater guide layer is the grid guide layer of 1mm thickness, and absorption film surface protective layer 101 is
0.1mm thickness, grammes per square metre 45g/m2Polypropylene non-woven layer of cloth, in adsorption layer 102 adsorbed film with a thickness of 180 μm, porosity is
85%, high molecular material base fabric with a thickness of 200 μm, high molecular material is polyacrylonitrile.
Embodiment 3
A kind of adsorption uranium device, concrete structure diagram is as shown in figure 3, absorbing unit is disposed with seawater guide layer 103, inhales
Membrane face protective layer 101, adsorption layer 102, absorbing unit fold the device to form cuboid shape, and wherein seawater guide layer is
The grid guide layer of 4mm thickness, absorption film surface protective layer 101 are 0.04mm thickness, grammes per square metre 15g/m2Polypropylene non-woven layer of cloth, inhale
In attached layer 102 adsorbed film with a thickness of 50 μm, porosity 78%, high molecular material base fabric with a thickness of 80 μm, macromolecule material
Material is polyester.
The Applicant declares that the utility model illustrates the device of the adsorption uranium of the utility model through the foregoing embodiment, but
The utility model is not limited to above-mentioned processing step, that is, does not mean that the utility model must rely on above-mentioned processing step ability
Implement.It should be clear to those skilled in the art, any improvement to the utility model, to selected by the utility model
The equivalence replacement of raw material and addition, the selection of concrete mode of auxiliary element etc., all fall within the protection scope of the utility model and
Within the open scope.
Claims (10)
1. a kind of device of adsorption uranium, which is characterized in that described device includes the absorbing unit that at least one sets gradually, described
Absorbing unit includes the seawater guide layer set gradually, absorption film surface protective layer, adsorption layer.
2. the apparatus according to claim 1, which is characterized in that the adsorption layer is that adsorbed film is deposited in high molecular material base
The layer formed on cloth.
3. the apparatus of claim 2, which is characterized in that the high molecular material is polyester, polyacrylonitrile, poly- third
Any one in alkene, cellulose diacetate or Kynoar.
4. the apparatus of claim 2, which is characterized in that the adsorbed film with a thickness of 80 μm~280 μm；The suction
The porosity of membrane is 72%~85%.
5. the apparatus according to claim 1, which is characterized in that the absorption film surface protective layer is polypropylene non-woven layer of cloth.
6. device according to claim 1 or 5, which is characterized in that the absorption film surface protective layer with a thickness of 0.04~
0.1mm。
7. device according to claim 5, which is characterized in that the grammes per square metre of the polypropylene non-woven layer of cloth is 15~45g/m2。
8. the apparatus according to claim 1, which is characterized in that the seawater guide layer is grid guide layer.
9. device according to claim 8, which is characterized in that the grid guide layer with a thickness of 1mm~4mm.
10. the apparatus according to claim 1, which is characterized in that the shape of described device be cylindrical, the rectangle bodily form,
Any one in spherical or the pyramid bodily form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821758403.2U CN209143754U (en) | 2018-10-29 | 2018-10-29 | A kind of device of adsorption uranium |
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| CN201821758403.2U CN209143754U (en) | 2018-10-29 | 2018-10-29 | A kind of device of adsorption uranium |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112505264A (en) * | 2021-02-08 | 2021-03-16 | 中国工程物理研究院核物理与化学研究所 | A sea trial test device for uranium is carried to sea water |
| CN116651383A (en) * | 2023-04-21 | 2023-08-29 | 海南大学 | Large-channel thick-film hydrogel material and engineering seawater uranium extraction device |
-
2018
- 2018-10-29 CN CN201821758403.2U patent/CN209143754U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112505264A (en) * | 2021-02-08 | 2021-03-16 | 中国工程物理研究院核物理与化学研究所 | A sea trial test device for uranium is carried to sea water |
| CN116651383A (en) * | 2023-04-21 | 2023-08-29 | 海南大学 | Large-channel thick-film hydrogel material and engineering seawater uranium extraction device |
| CN116651383B (en) * | 2023-04-21 | 2024-04-05 | 海南大学 | Large-channel thick-film hydrogel material and engineering seawater uranium extraction device |
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