CN108840387A - It is a kind of based on graphene/porous carbon/carbon-copper composite material desalination plant and method - Google Patents
It is a kind of based on graphene/porous carbon/carbon-copper composite material desalination plant and method Download PDFInfo
- Publication number
- CN108840387A CN108840387A CN201810729316.2A CN201810729316A CN108840387A CN 108840387 A CN108840387 A CN 108840387A CN 201810729316 A CN201810729316 A CN 201810729316A CN 108840387 A CN108840387 A CN 108840387A
- Authority
- CN
- China
- Prior art keywords
- carbon
- porous
- composite material
- seawater
- graphene
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/14—Treatment of water, waste water, or sewage by heating by distillation or evaporation using solar energy
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/043—Details
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/138—Water desalination using renewable energy
- Y02A20/142—Solar thermal; Photovoltaics
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/208—Off-grid powered water treatment
- Y02A20/212—Solar-powered wastewater sewage treatment, e.g. spray evaporation
Abstract
The present invention discloses a kind of based on graphene/porous carbon/carbon-copper composite material desalination plant and method, including taper cover board, cavity, composite bottom board, catchment recess and water receiver, the composite bottom board is a kind of three-dimensional grapheme/porous carbon/carbon-copper composite material photothermal conversion materiat.Method for desalting seawater of the present invention is：When receiving illumination, solar radiation penetrates top blind flange, and seawater to be processed absorbs solar radiation by three-dimensional grapheme/Porous Cu composite bottom board and is evaporated to vapor, meets the condensation of low temperature cover board and converges in catchment recess, then is exported by hose to water receiver；The porous feature of the three-dimensional grapheme/Porous Cu composite bottom board effectively prevent bottom seawater forced convertion to supplement seawater upwards while leading to thermal loss, reaches reverse heat-exchange effect with fluid.For the present invention by the efficient photothermal conversion materiat of development of new, augmentation of heat transfer while, improves solar radiation utilization rate, further enhances the evaporation rate of seawater, reduces unit fresh water energy consumption.
Description
Technical field
The invention patent belongs to solar energy heat utilization field, be related to it is a kind of using the sun can be carried out sea water desalination device and
Method, and in particular to a kind of based on graphene/porous carbon/carbon-copper composite material desalination plant and method.
Background technique
With increasingly deficient, the processing and application of the seawater resources of land occupation ball surface product more than 70% of drinkable freshwater resources
Increasingly it is valued by people.Desalination with Solar Energy is to solution island shortage of fresh water, remote and electric power resource
The brackish water desalination of not accessibility water-deficient area is of great significance.The generally existing fortune of the solar energy distillation device developed at present
The drawbacks such as trip temperature is low, water yield is not high, the efficiency of solar energy utilization is lower and equipment investment is higher, therefore steamed in existing solar energy
It evaporates and carries out in-depth study on the basis of technology and development of novel is necessary.Current various types of solar energy sea waters are light
Makeup set generally belong in structure to device improve and it is few further investigation is made from heat-absorbing material, so this
Device has been invented a kind of based on graphene/porous carbon/carbon-copper composite material desalination plant and method as point of penetration.
Summary of the invention
The present invention provides a kind of solar energy sea water desalination apparatus, and distiller takes up space small in the device, easy to use, fortune
Row is reliable and is simple to manufacture；Increase suction of the bottom plate to solar radiant energy using novel three-dimensional graphene/porous carbon/carbon-copper composite material
It receives, Corrosion of base plate can also be prevented；The fresh water that evaporation obtains directly is collected by hose water conservancy diversion, and instant take may be implemented.
The invention is realized by the following technical scheme.
The present invention is a kind of based on graphene/porous carbon/carbon-copper composite material desalination plant, including taper cover board, cavity,
Composite bottom board, catchment recess and water receiver, the composite bottom board turn for a kind of three-dimensional grapheme/porous carbon/carbon-copper composite material photo-thermal
Change material.
The present invention is a kind of based on graphene/porous carbon/carbon-copper composite material desalination plant, and the taper cover board selects four
The preferable isosceles triangle poly (methyl methacrylate) plate of block light transmittance, thickness 3-5mm combine tapered pyramid structure；The cavity four
Wall equally uses poly (methyl methacrylate) plate, thickness 8-10mm.
The present invention is a kind of based on graphene/porous carbon/carbon-copper composite material desalination plant, and the catchment recess is located at cone
Four wall joint of shape cover board and cavity, and lead to fresh water in water receiver by hose in a side opening；The composite bottom board table
Face is higher than horizontal plane about 2-5mm.
The present invention is a kind of based on graphene/porous carbon/carbon-copper composite material desalination plant, the three-dimensional grapheme/porous
Carbon/carbon-copper composite material is using porous foam copper as mainboard, using brushing infusion process in the compound painting of the graphene coated waterproof of its channel surfaces
Material, obtains three-dimensional grapheme/Porous Cu composite bottom board；The graphene anticorrosive paint coated in Porous Cu surface can prevent bottom
Plate corrosion.
The present invention is a kind of based on graphene/porous carbon/carbon-copper composite material desalination plant, when receiving illumination, solar radiation
Through top blind flange, seawater to be processed absorbs solar radiation by three-dimensional grapheme/Porous Cu composite bottom board and is evaporated to vapor,
It meets the condensation of low temperature cover board to converge in catchment recess, then is exported by hose to water receiver.
The present invention is a kind of based on graphene/porous carbon/carbon-copper composite material desalination plant, the three-dimensional grapheme/porous
The high porosity feature of copper composite bottom board effectively prevent bottom seawater forced convertion to supplement sea upwards while leading to thermal loss
Water reaches reverse heat-exchange effect with fluid；The three-dimensional grapheme/porous carbon/carbon-copper composite material has high-specific surface area characteristic, changes
Heat area is big, exchanges amount of heat in a short time.
Beneficial effects of the present invention are as follows.
1, it is inclined rectangular pyramid, daylighting area with higher and condensation area at the top of distilling apparatus, is conducive to mention
The evaporation effect of high device.
2, it is three-dimensional porous sponge shape structure based on three-dimensional grapheme/porous carbon/carbon-copper composite material bottom plate, has great
For contact area, with the heat-absorbing material of the single area of tradition, heat exchange area is bigger, and seawater heating evaporation efficiency is higher.
3, device using when can be placed directly in seawater or merging is loaded in the container of seawater, three-dimensional structure Porous Cu
Play the role of inhibiting seawater forced convertion, reduce thermal inertia bring thermal loss, the sea being located in Porous Cu can be made
Water by vapour pressure and atmospheric pressure effect and flow up；Composite bottom board from top to down it is thermally conductive and from bottom to top fluid fortune
It is dynamic to form reverse heat-exchange, heat exchange efficiency is improved, evaporation of seawater is accelerated.
4, efficiently, graphene waterproof composite coating not only has for the three-dimensional grapheme used/Porous Cu composite material environmental protection
High photothermal conversion efficiency, and can effectively prevent Corrosion of base plate.
Detailed description of the invention
Fig. 1 is that the overall structure based on graphene/porous carbon/carbon-copper composite material desalination plant in the present embodiment is shown
It is intended to.1. taper cover board, 2. cavity, 3. composite bottom board, 4. catchment recess, 5. water receiver in figure.
Specific embodiment
In order to allow features described above and advantage of the invention to be more readily understood, below in conjunction with attached drawing, 1 couple of present invention is done furtherly
It is bright.
(1) whole device is suspended in seawater liquid to be processed, and device bottom plate fully absorbs seawater to be processed, works as solar irradiation
Penetrate top 1. taper cover board when, fraction solar radiation is absorbed or is reflected back by cover board, most of to be incident upon dress through cover board
Bottom set portion based on three-dimensional grapheme/porous carbon/carbon-copper composite material photothermal conversion 3. composite bottom board, due to sunlight carry it is big
Energy absorbs and is converted into thermal energy by device bottom plate, heats seawater to be distilled in 2. cavity, and seawater is heated to be evaporated to water steaming
Gas convection current together with air in 2. cavity moves bottom-up.
(2) since 1. the solar energy of taper cover board absorption is less at the top of device and directly radiates to surrounding, so temperature
Lower than the temperature of seawater in 2. cavity, vapor cover board to the cold and in its sweating water pearl flows into along inclination wooden partition and is located at
1. in taper cover board and the 2. 4. catchment recess of four wall joint of cavity, the water purification that collects is from 4. one aperture stream of catchment recess end
Out after reaction chamber, it is stand-by that storage is exported into the 5. water receiver of the other side by rubber hose.The pollutants such as salinity, bacterium in water
The high fresh water of degree of purification will not be obtained with water evaporation.
(3) the porous 3. composite bottom board porosity of three-dimensional structure is high, and aperture is small (about 5mm), can be good at reducing position
The forced convertion caused by the seawater fluctuation of lower layer influences to reduce heat loss.When bottom plate upper ocean water be constantly evaporated it is cold
It is solidifying, it is acted on by vapour pressure effect and atmospheric pressure, bottom plate lower layer seawater can be automatically replenished and be formed from bottom to top in hole
Slowly movement, top evaporation of seawater rate is faster, and the absorbability of lower section seawater is stronger.Meanwhile the heat that composite bottom board is absorbed
Amount is to be conducted from top to down, forms the thermally conductive phenomenon of a gradient in material internal, forms reverse heat with upward seawater
Exchange, heating seawater is without making heat loss to the full extent.It is transferred heat in the short time and fills in its hole and be located at
The seawater on bottom plate upper layer improves the heating evaporation efficiency of seawater.
Design parameter
1. taper cover board：It is by the glass cover-plate of four pieces of isosceles triangles（Triangle waist length is all 23cm, wherein two pieces of bottom edges are
20.3cm；Another two pieces of bottom edges are 21.6cm）The rectangular pyramid being combined into, and rectangular pyramid bottom surface and horizontal plane have certain inclination angle,
So that the condensation fresh water being located in catchment recess can be converged along sink to lower, aperture is finally flowed out.2. four wall glass of cavity：
Two pieces of upper bottoms are 10cm, are gone to the bottom as 13.5cm, and a height of 20cm's is trapezoidal, one piece of a length of 21.6cm, the rectangle of a height of 13.5cm, one
The a length of 21.6cm of block, the rectangle of a height of 10cm, with a thickness of 8mm.3. composite bottom board：Having a size of 20cm × 20cm × 2cm, aperture is about
For 5mm.4. catchment recess：Internal diameter is 4mm, and selecting an outer diameter is the long soft-pipe of 6mm, connects the small of catchment recess opening
Hole.
Claims (6)
1. a kind of based on graphene/porous carbon/carbon-copper composite material desalination plant, it is characterised in that：Including taper cover board, chamber
Body, composite bottom board, catchment recess and water receiver, the composite bottom board are a kind of three-dimensional grapheme/porous carbon/carbon-copper composite material light
Thermal transition material.
2. according to claim 1 a kind of based on graphene/porous carbon/carbon-copper composite material desalination plant, feature exists
In：The taper cover board selects the preferable isosceles triangle poly (methyl methacrylate) plate of four pieces of light transmittances, and thickness 3-5mm is combined tapered
Pyramid structure；Four wall of cavity equally uses poly (methyl methacrylate) plate, thickness 8-10mm.
3. according to claim 1 a kind of based on graphene/porous carbon/carbon-copper composite material desalination plant, feature exists
In：The catchment recess is located at four wall joint of taper cover board and cavity, and fresh water is led to storage by hose in a side opening
In hydrophone；The composite bottom board surface is higher than horizontal plane about 2-5mm.
4. according to claim 1 a kind of based on graphene/porous carbon/carbon-copper composite material desalination plant, feature exists
In：The three-dimensional grapheme/porous carbon/carbon-copper composite material is using porous foam copper as mainboard, using brushing infusion process in its channel surfaces
Graphene coated waterproof composite coating obtains three-dimensional grapheme/Porous Cu composite bottom board；The stone coated in Porous Cu surface
Black alkene anticorrosive paint can prevent Corrosion of base plate.
5. according to any one of claims 1-4 a kind of based on graphene/porous carbon/carbon-copper composite material sea water desalination side
Method, it is characterised in that：When receiving illumination, solar radiation penetrates top blind flange, and seawater to be processed is by three-dimensional grapheme/Porous Cu
Composite bottom board absorbs solar radiation and is evaporated to vapor, meets the condensation of low temperature cover board and converges in catchment recess, then is exported by hose
To water receiver.
6. according to claim 5 a kind of based on graphene/porous carbon/carbon-copper composite material method for desalting seawater, feature exists
In：The three-dimensional grapheme/Porous Cu composite bottom board high porosity feature effectively prevent bottom seawater forced convertion to lead to heat
Seawater is supplemented upwards while amount loss, reaches reverse heat-exchange effect with fluid；The three-dimensional grapheme/porous carbon/carbon-copper composite material
With high-specific surface area characteristic, heat exchange area is big, exchanges amount of heat in a short time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810729316.2A CN108840387A (en) | 2018-07-05 | 2018-07-05 | It is a kind of based on graphene/porous carbon/carbon-copper composite material desalination plant and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810729316.2A CN108840387A (en) | 2018-07-05 | 2018-07-05 | It is a kind of based on graphene/porous carbon/carbon-copper composite material desalination plant and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108840387A true CN108840387A (en) | 2018-11-20 |
Family
ID=64200559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810729316.2A Pending CN108840387A (en) | 2018-07-05 | 2018-07-05 | It is a kind of based on graphene/porous carbon/carbon-copper composite material desalination plant and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108840387A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109607649A (en) * | 2018-12-19 | 2019-04-12 | 佛山科学技术学院 | A kind of desalination plant of clean and effective |
| CN112012273A (en) * | 2020-07-31 | 2020-12-01 | 西安交通大学 | Novel intelligent water collecting/taking device based on multifunctional MOF material |
| CN113307322A (en) * | 2021-06-15 | 2021-08-27 | 桂林电子科技大学 | Solar evaporator based on plasmon effect |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201485301U (en) * | 2009-06-10 | 2010-05-26 | 陈毅 | Simple seawater desalted device |
| CN102560415A (en) * | 2012-01-20 | 2012-07-11 | 中国科学院上海硅酸盐研究所 | Three-dimensional graphene/metal line or metal wire composite structure and preparation method thereof |
| US9713794B2 (en) * | 2011-04-11 | 2017-07-25 | Samsung Electronics Co., Ltd. | Separation membrane including graphene |
| CN206915913U (en) * | 2017-03-15 | 2018-01-23 | 钟多琳 | A kind of desalinization or sewage-treatment plant based on solar energy |
| CN107739066A (en) * | 2017-10-27 | 2018-02-27 | 成都新柯力化工科技有限公司 | It is a kind of to utilize the desalination of photothermal conversion function, the method for purifying sea water |
| CN108083373A (en) * | 2017-12-31 | 2018-05-29 | 林大利 | A kind of floatation type solar energy sea water distilling apparatus |
| CN207483397U (en) * | 2017-09-14 | 2018-06-12 | 中车工业研究院有限公司 | A kind of floatation type desalination plant based on photo-thermal evaporation |
-
2018
- 2018-07-05 CN CN201810729316.2A patent/CN108840387A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201485301U (en) * | 2009-06-10 | 2010-05-26 | 陈毅 | Simple seawater desalted device |
| US9713794B2 (en) * | 2011-04-11 | 2017-07-25 | Samsung Electronics Co., Ltd. | Separation membrane including graphene |
| CN102560415A (en) * | 2012-01-20 | 2012-07-11 | 中国科学院上海硅酸盐研究所 | Three-dimensional graphene/metal line or metal wire composite structure and preparation method thereof |
| CN206915913U (en) * | 2017-03-15 | 2018-01-23 | 钟多琳 | A kind of desalinization or sewage-treatment plant based on solar energy |
| CN207483397U (en) * | 2017-09-14 | 2018-06-12 | 中车工业研究院有限公司 | A kind of floatation type desalination plant based on photo-thermal evaporation |
| CN107739066A (en) * | 2017-10-27 | 2018-02-27 | 成都新柯力化工科技有限公司 | It is a kind of to utilize the desalination of photothermal conversion function, the method for purifying sea water |
| CN108083373A (en) * | 2017-12-31 | 2018-05-29 | 林大利 | A kind of floatation type solar energy sea water distilling apparatus |
Non-Patent Citations (1)
| Title |
|---|
| 刘鹏忠: "铜基石墨烯复合材料的制备及性能研究", 《有色金属材料与工程》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109607649A (en) * | 2018-12-19 | 2019-04-12 | 佛山科学技术学院 | A kind of desalination plant of clean and effective |
| CN112012273A (en) * | 2020-07-31 | 2020-12-01 | 西安交通大学 | Novel intelligent water collecting/taking device based on multifunctional MOF material |
| CN112012273B (en) * | 2020-07-31 | 2021-11-19 | 西安交通大学 | Intelligent water collecting/taking device based on multifunctional MOF material |
| CN113307322A (en) * | 2021-06-15 | 2021-08-27 | 桂林电子科技大学 | Solar evaporator based on plasmon effect |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Liu et al. | A mimetic transpiration system for record high conversion efficiency in solar steam generator under one-sun | |
| Bai et al. | Interfacial solar evaporation for water production: from structure design to reliable performance | |
| CN106365235A (en) | Low-temperature low-pressure solar local-thermal-process seawater desalination system | |
| CN108840387A (en) | It is a kind of based on graphene/porous carbon/carbon-copper composite material desalination plant and method | |
| Bai et al. | A high efficiency solar steam generation system with using residual heat to enhance steam escape | |
| Du et al. | A floating vapor condensation structure in a heat-localized solar evaporation system for facile solar desalination | |
| CN104761015B (en) | Ultrasonic assisted solar seawater desalination device based on thermal coupling technology | |
| CN110015649A (en) | A kind of carbon-based material and preparation method thereof | |
| CN109626470A (en) | Solar battery Sweat coolling and multistage seawater desalting coupled system | |
| CN106542598A (en) | A kind of solar energy sea water desalination apparatus | |
| CN109467151A (en) | A kind of solar energy sea water desalination apparatus | |
| CN104817127A (en) | Solar energy distilled water preparing device | |
| CN113044899B (en) | Phase-change heat storage type interface photo-thermal evaporation seawater desalination device and seawater desalination method | |
| CN113896269A (en) | High-efficient solar energy sea water desalination device based on interface evaporation | |
| CN208022731U (en) | A kind of desalination plant based on solar energy | |
| CN108423733A (en) | Humidify dehumidification type staged solar energy salt water desalination apparatus | |
| CN111847557A (en) | Efficient focusing solar seawater desalination distiller and method | |
| CN205773477U (en) | A kind of solar energy water generator | |
| Li et al. | Synchronously managed water and heat transportation for highly efficient interfacial solar desalination | |
| Chang et al. | Salt-rejecting rGO-coated melamine foams for high-efficiency solar desalination | |
| Sun et al. | Optimal design for floating solar still by structural modification: A review | |
| CN106745434B (en) | Positive pressure operation multi-effect evaporation sea water desalination system based on solar energy medium temperature heat collection | |
| CN102249356A (en) | Hot water pure water coproduction device by solar energy | |
| CN110407273A (en) | A kind of design of the photo-thermal surface water evaporation device based on lanthanum hexaboride nanoparticle | |
| CN111895662B (en) | Solar heat collection device with automatic drainage control function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181120 |