CN109305692A - A method of salt pan solar evaporation rate is improved using hydrophilic modifying bead - Google Patents
A method of salt pan solar evaporation rate is improved using hydrophilic modifying bead Download PDFInfo
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- CN109305692A CN109305692A CN201710626790.8A CN201710626790A CN109305692A CN 109305692 A CN109305692 A CN 109305692A CN 201710626790 A CN201710626790 A CN 201710626790A CN 109305692 A CN109305692 A CN 109305692A
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- salt pan
- bead
- evaporation
- evaporation rate
- solar
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D3/00—Halides of sodium, potassium or alkali metals in general
- C01D3/04—Chlorides
- C01D3/06—Preparation by working up brines; seawater or spent lyes
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/133—Renewable energy sources, e.g. sunlight
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The invention discloses a kind of methods for improving salt pan solar evaporation rate using polymeric hydrophilic bead, it is characterized in that putting into the polymer globules of different-grain diameter in the evaporation tank equipped with various concentration sodium chloride solution, bead is set to have different area accountings in solution evaporating surface, by adjusting fan wind speed and sunlamp irradiation temperature, simulation salt pan solar evaporation experiment is carried out, evaporation rate is calculated by formula.As a result, it has been found that solution evaporation rate can be made to greatly improve under above-mentioned different condition.It is applied in the solar evaporation of salt pan by such method, can effectively increase salt pan carburation by evaporation surface area, to reach quickening evaporation rate, reduce salt pan land area, reduce the production cycle and increase the purpose of yield, there is highly important practical directive significance.
Description
Technical field
The invention belongs to salt pan solar evaporation technical fields, and in particular to a kind of to improve salt pan day using hydrophilic modifying bead
Shine the method for evaporation rate.
Background technique
China's Coastal Areas land price is sufficiently expensive at present, and commercial land and residential land constantly compress conventional industries
The space of land used.Therefore for coastal area solarization Salt Industry, only make great efforts to improve salt pan land use rate and add
Value, can just be effectively relieved the status of seawater solar evaporation salt manufacturing land used anxiety.Day, solar salt was compared to other salt extraction process phases
To fairly simple, and belong to large area operating system, is produced mainly by external environment.Evaporation and crystallization are solarization systems
Two more important step processes in salt technique, wherein evaporation process is mainly to be carried out using solar irradiation and wind energy.Its principle is
Brine is after solar irradiation, and moisture can constantly outside vaporization be into air, and the content of moisture is got in such brine
Next smaller, brine is gone to after being concentrated step by step to be continued to be evaporated in Crystallization Procedure, salt after bittern concentration reaches saturation point
It will be precipitated.The evaporation rate of moisture is influenced by many conditions, such as the humidity of air, the irradiation intensity of the sun, natural
Size of wind speed etc. all influences its evaporation rate, that is, affects the concentration speed of brine.At present in the salt pan developed
In solarization salt-making process, extraneous natural environment can not be produced by manually being intervened, therefore in optimization salt pan day solar salt
There are also biggish research spaces for process aspect.
The usage history of high molecular material for a long time, can be divided into the natural macromolecular material for having nature and artificial conjunction
At high molecular material.With the progress of science and technology and the development of economic technology, high performance high molecular material development is very
Rapidly, develop towards intelligence, functionalization, fining direction.It is common various fibers in life, synthetic rubber, polyethylene, poly-
Propylene etc. belongs to high molecular material, and application is very extensive, these materials are become various productions with different methods by people
Product have been applied to many aspects of people's life.Chinese patent CN105727769A is disclosed in a kind of ultraviolet irradiation polypropylene
The hydrophilic modification method of empty fiber membrane can effectively reduce the water contact angle of polypropylene screen；Chinese patent CN104150787A
Disclose the method for modifying that a kind of Induced by Dopamine sol-gal process prepares high hydrophiling coating, can to polymeric membrane or glass into
Row surface covering achievees the purpose that reduce water contact angle in turn.But it is not involved with during the solar evaporation of salt pan.
Evaporation process in day solar salt production belongs to natural evaporation, therefore is affected by external condition, especially
It is to be affected by natural conditions.Due to being that outdoor operation is difficult to control, so many salt producing crafts are by many problems
Puzzlement.Solar irradiation deficiency, radiation intensity is weak, in the presence of the small equal weather conditions of air humidity, can largely slow down salt manufacturing
Progress, evaporation rate substantially reduces, and evaporation periods slow down the growth for meaning that the brine residence time, the brine amount of infiltration
It just will increase, the yield and quality of salt can all be affected.The present invention passes through some without toxicity and cheap poly-
The hydrophilic bead of object is closed, salt pan carburation by evaporation surface area can be increased by putting into salt Tanaka, to reach quickening evaporation rate, reduced and used
Ground area, reduction production cycle achieve the purpose that increase yield.And polymer globules, which have, will not influence substance in brine
Property can recycle, and will not pollute the series of advantages such as waste.
Summary of the invention
It is an object of the invention to provide it is a kind of using hydrophilic modifying bead improve salt pan solar evaporation rate method, with
Reach and reduce salt pan evaporation land used, increases the purpose of production capacity.
Implementer's case of the invention is as follows:
(1) the hydrophilic modifying bead distilled water that partial size is 1~5mm is taken to clean, after putting into 60 DEG C of baking ovens drying 6 hours
It takes out；
(2) by bead in putting into the evaporation tank for being sufficiently loaded with more 3.5~26.5wt% sodium chloride solutions, wherein steaming
Hair pool area is 400cm2(20*20cm) makes bead account for evaporation tank area ratio 5~100%, allows after withdrawing from partition by partition
Bead disperses to swim in solution surface naturally；
(3) by fan natural wind simulating energy, adjusting wind speed is 0~20m/s；With sunlamp analog solar, spoke is adjusted
Range from and irradiation intensity, make solution surface irradiation temperature at 20~80 DEG C, simulation salt pan solar evaporation experiment；
(4) Therapy lasted calculates evaporation rate after carrying out 1~24 hour.
Above-mentioned polymer globules are polypropylene (PP), Kynoar (PVDF), polytetrafluoroethylene (PTFE) (PTFE), polyether sulfone
(PES), one of polysulfones (PSF) or several.
The present invention by after safe and non-toxic polymer globules hydrophilic modifying be applied to salt pan solar evaporation during, can
Effectively increase carburation by evaporation surface area, to reach quickening evaporation rate, reduce land area, reduces the production cycle and increase production
The purpose of amount.It is experimentally confirmed, 5~23% evaporation rate can be improved in the investment of polymeric hydrophilic bead.And polymer
Bead will not influence the property of substance in brine, can recycle, and will not pollute the series of advantages such as waste, special energy
Salt pan land used is effectively relieved and reduces the realistic problems such as the bring underproduction, there is great importance to actual production process.
Specific embodiment
Experimentation
Embodiment 1
(1) it takes the polypropylene hydrophilic modifying bead distilled water that partial size is 3mm to clean, it is small to put into 60 DEG C of baking ovens dry 6
When after take out；
(2) by bead in putting into the evaporation tank for being sufficiently loaded with more 4wt% sodium chloride solutions, wherein evaporating pool area
For 400cm2(20*20cm) makes bead account for evaporation tank area ratio 50%, allows bead to disperse naturally after withdrawing from partition by partition
Swim in solution surface；
(3) by fan natural wind simulating energy, adjusting wind speed is 1m/s；With sunlamp analog solar, adjust irradiation away from
From and irradiation intensity, make 30 DEG C of solution surface irradiation temperature, simulation salt pan solar evaporation experiment；
(4) Therapy lasted calculates evaporation rate after carrying out 4 hours.
It can be calculated evaporation rate by experimental result and improve 20% compared to natural evaporation under the same terms.
Embodiment 2
(1) it takes the polypropylene hydrophilic modifying bead distilled water that partial size is 3mm to clean, it is small to put into 60 DEG C of baking ovens dry 6
When after take out；
(2) by bead in putting into the evaporation tank for being sufficiently loaded with more 10wt% sodium chloride solutions, wherein evaporation tank face
Product is 400cm2(20*20cm) makes bead account for evaporation tank area ratio 30%, allows bead to divide naturally after withdrawing from partition by partition
It dissipates and swims in solution surface；
(3) by fan natural wind simulating energy, adjusting wind speed is 4m/s；With sunlamp analog solar, adjust irradiation away from
From and irradiation intensity, make 30 DEG C of solution surface irradiation temperature, simulation salt pan solar evaporation experiment；
(4) Therapy lasted calculates evaporation rate after carrying out 8 hours.
It can be calculated evaporation rate by experimental result and improve 12% compared to natural evaporation under the same terms.
Embodiment 3
(1) it takes the polyether sulfone hydrophilic modifying bead distilled water that partial size is 4mm to clean, it is small to put into 60 DEG C of baking ovens dry 6
When after take out；
(2) by bead in putting into the evaporation tank for being sufficiently loaded with more 3.5wt% sodium chloride solutions, wherein evaporation tank face
Product is 400cm2(20*20cm) makes bead account for evaporation tank area ratio 50%, allows bead to divide naturally after withdrawing from partition by partition
It dissipates and swims in solution surface；
(3) by fan natural wind simulating energy, adjusting wind speed is 10m/s；With sunlamp analog solar, adjust irradiation away from
From and irradiation intensity, make 50 DEG C of solution surface irradiation temperature, simulation salt pan solar evaporation experiment；
(4) Therapy lasted calculates evaporation rate after carrying out 6 hours.
It can be calculated evaporation rate by experimental result and improve 16% compared to natural evaporation under the same terms.
Comparative example 1
(1) by enough 4wt% sodium chloride solutions in 400cm2In the evaporation tank of (20*20cm), do not add any poly-
Close object bead；
(2) by fan natural wind simulating energy, adjusting wind speed is 1m/s；With sunlamp analog solar, adjust irradiation away from
From and irradiation intensity, make 30 DEG C of solution surface irradiation temperature, simulation salt pan solarization natural evaporation experiment；
(3) Therapy lasted calculates evaporation rate after carrying out 4 hours.
The calculating of two, evaporation rates
In order to which quantitative analysis hydrophilic modifying bead has much to the influence for such as shining salt pan evaporation rate, need by following
Formula is evaporated the calculating of rate to experiment:
Wherein,
V, evaporation rate, unit are gram of every square metre (g/ (m per hour2h))；
m1, solution gross mass when evaporation starts, unit is gram (g)；
m2, solution gross mass at the end of evaporation, unit is gram (g)；
A, disengagement area, unit are square metre (m2)；
T, evaporation time, unit are hour (h).
Claims (5)
1. a kind of method for improving salt pan solar evaporation rate using hydrophilic modifying bead, it is characterised in that follow these steps reality
It is existing:
(1) the modified bead of the polymeric hydrophilic of different-grain diameter is cleaned with distilled water, after putting into 60 DEG C of baking ovens drying 6 hours
It takes out；
(2) bead is put into the evaporation tank of sodium chloride solution of enough various concentrations, so that bead is occupied steaming by partition
The certain area ratio in pond is sent out, partition is then withdrawn from and disperses to swim in solution surface naturally by bead；
(3) by fan natural wind simulating energy, different wind speed are adjusted；It is irradiated using sunlamp simulated solar, adjusts irradiation distance
And irradiation intensity, to adjust solution surface irradiation temperature, simulation salt pan solar evaporation experiment calculates evaporation speed after a certain period of time
Rate.
2. a kind of method for improving salt pan solar evaporation rate using hydrophilic modifying bead according to claim 1, special
Sign is: the material of the polymer globules in step (1) is polypropylene (PP), Kynoar (PVDF), polytetrafluoroethylene (PTFE)
(PTFE), one of polyether sulfone (PES), polysulfones (PSF) or several.
3. a kind of method for improving salt pan solar evaporation rate using hydrophilic modifying bead according to claim 1, special
Sign is: the polymer globules partial size in step (1) is 1~5mm, but includes without being confined to 1~5mm.
4. a kind of method for improving salt pan solar evaporation rate using hydrophilic modifying bead according to claim 1, special
Sign is: the concentration of sodium chloride solution in step (2) is 3.5~26.5wt%, but includes without being confined to sodium chloride solution, main
Apply in Bittern of Salt Pan: the disengagement area ratio that wherein bead accounts for is 5~100%.
5. a kind of method for improving salt pan solar evaporation rate using hydrophilic modifying bead according to claim 1, special
Sign is: it is 0~20m/s that fan in step (3), which adjusts wind speed, adjust sunlamp make irradiation make solution surface temperature 20~
80 DEG C, simulate salt pan evaporation experiment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710626790.8A CN109305692A (en) | 2017-07-26 | 2017-07-26 | A method of salt pan solar evaporation rate is improved using hydrophilic modifying bead |
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| CN201710626790.8A CN109305692A (en) | 2017-07-26 | 2017-07-26 | A method of salt pan solar evaporation rate is improved using hydrophilic modifying bead |
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| CN109305692A true CN109305692A (en) | 2019-02-05 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111816341A (en) * | 2020-08-04 | 2020-10-23 | 天津科技大学 | Device and method for separating and recycling solid-liquid radioactive waste based on interface evaporation radioactive waste water |
| CN111883278A (en) * | 2020-08-04 | 2020-11-03 | 天津科技大学 | Process for treating radioactive wastewater |
| CN114849256A (en) * | 2022-06-02 | 2022-08-05 | 紫金矿业集团股份有限公司 | Method for improving evaporation and concentration efficiency of salt pan |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102464344A (en) * | 2011-06-17 | 2012-05-23 | 冯静 | Device for evaporating brine and generating electricity by utilizing solar power and wind power |
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2017
- 2017-07-26 CN CN201710626790.8A patent/CN109305692A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102464344A (en) * | 2011-06-17 | 2012-05-23 | 冯静 | Device for evaporating brine and generating electricity by utilizing solar power and wind power |
Non-Patent Citations (2)
| Title |
|---|
| 唐磊等: "《轻量化材料技术》", 31 January 2014, 国防工业出版社 * |
| 王善勤: "《塑料配方设计问答》", 31 January 2003, 中国轻工业出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111816341A (en) * | 2020-08-04 | 2020-10-23 | 天津科技大学 | Device and method for separating and recycling solid-liquid radioactive waste based on interface evaporation radioactive waste water |
| CN111883278A (en) * | 2020-08-04 | 2020-11-03 | 天津科技大学 | Process for treating radioactive wastewater |
| CN111883278B (en) * | 2020-08-04 | 2022-08-12 | 天津科技大学 | Process for treating radioactive wastewater |
| CN114849256A (en) * | 2022-06-02 | 2022-08-05 | 紫金矿业集团股份有限公司 | Method for improving evaporation and concentration efficiency of salt pan |
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Application publication date: 20190205 |