CN109200827A - A kind of plate film distilling apparatus, distillating method and application - Google Patents
A kind of plate film distilling apparatus, distillating method and application Download PDFInfo
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- CN109200827A CN109200827A CN201811375383.5A CN201811375383A CN109200827A CN 109200827 A CN109200827 A CN 109200827A CN 201811375383 A CN201811375383 A CN 201811375383A CN 109200827 A CN109200827 A CN 109200827A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/36—Pervaporation; Membrane distillation; Liquid permeation
- B01D61/364—Membrane distillation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/08—Flat membrane modules
-
- 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
- C02F1/08—Thin film evaporation
-
- 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
-
- 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
- Y02A20/131—Reverse-osmosis
Abstract
The present invention provides a kind of plate film distilling apparatus, distillating method and application, the plate film distilling apparatus is made of several distillation units, and the distillation unit includes several film frames and several flow-passage grids；Plate distilling apparatus provided by the invention, can Optional assembling disassembly, by increasing or decreasing the combination number of plies of film frame and flow-passage grid, to reach optimal combination and optimal distillation efficiency；And pass through the reasonable setting of distillation film and condensation film, set up hot and cold liquid flow channel independent, so that the flowing of two kinds of liquid opposite directions, significantly increase the heat exchanger effectiveness between fluid, improve distillation efficiency, so that the output efficiency of distillating liquid greatly promotes, output efficiency can reach 2.0 liters/square m/h or so, and practical application value is high.
Description
Technical field
The invention belongs to chemical separating field, it is related to a kind of plate film distilling apparatus, distillating method and application.
Background technique
Using the different temperatures characteristic of solvent in solution and solute, such as vapour pressure, to realize the separation of solvent and solute, this
It is the basic principle of distillation.Traditional distillating method is the boiling point accessory temperature that solution is warmed to solvent, then by solvent vapour
Condensation is collected, to achieve the purpose that solvent is separated with solute.
Continuous requirement with people to water resource, desalination technology mature increasingly.Traditional sea water desalination
Method has 1) heating distillation；2) membrane separation technique (ultrafiltration and reverse osmosis membrane).In recent years, with the development of material science, another
Kind technology, i.e. membrane distillation (membrane distillation, hereinafter referred to as MD) technology have very big progress.Membrane distillation is (light
Change seawater) be exactly using the hydrophobic perforated membrane of one kind, characteristic be under pressure, water can not by it, but vapor
It can pass through.In this way, the side water temperature of film does not need very high, vapor permeable film and the other side for reaching film.
The mixed solution of a large amount of organic solvent and water is often generated in Chemical Manufacture.If at a proper temperature
The steam of organic solution and water is pressed with biggish difference, and film distillation technology then can be used for the concentration of organic solvent.
Usually have the method for operation of 4 kinds of membrane distillations there are several types of:
1) direct membrane distillation (DCMD), i.e., in the higher distillation medium of side connection temperature of hydrophobic membrane, (sea water desalination is answered
It is original seawater in), and the side of vapor permeation directly (leads in sea water desalination application usually with the lower cooling medium of temperature
It is fresh water) contact, therefore steam directly condenses in cooling medium.The liquid flow of high temperature side and low temperature side is kept in operation
It is dynamic.Due to by heat release, causing the temperature for distilling medium to decline and the increase of the temperature of cooling medium in steam condensation process.Therefore it needs
The temperature difference of distillation film two sides liquid is kept by heater and cooler device.
2) the air gap membrane distillation (AGMD), i.e., in the side of distillation film vapor permeation, steam passes through a air gap
After condense on one layer of impermeable film (condensation film), there is the liquid medium for keeping lower temperature in and the other side of condensation film
Flowing.Equally, operation need to keep the temperature difference of high-temperature medium and cryogenic media.But cryogenic media is not necessarily pure steaming
Condensed fluid is evaporated, this has special attraction to the sea water desalination application on extra large (island): can be with the seawater of low temperature as cold
Hold medium.In addition, this method is highly beneficial for the membrane distillation concentration of the mixed solution of organic solvent and water.
3) working gas purging membrane distillation (SWMD), i.e., distillation film vapor permeation side by with obstructed permeable membrane or its
Its combination of materials a, it is established that air duct is blown into for example dry nitrogen of working gas in the one end in channel, by vapor band membrane
Distilling apparatus, the steam-laden working gas taken out of go water (producing water) through condenser condensation again, and working gas is blown into film again
Distilling apparatus.
4) vacuum pumping membrane distillation (VSMD), working principle is similar to SWMD, unlike, it is in vapor permeation side
One end of air duct connects vacuum pump, extracts steam out distillation device, then by the steam condensation water making of extraction.
The efficiency of membrane distillation depend on film hydrophobic performance and pore size ,-operation when cold heat medium between the temperature difference,
And film surface retort gas removes rate.Therefore, how to develop it is a kind of promotion hot and cold water between heat transfer efficiency, film
Distillation efficiency device, for promoted membrane distillation method distillation efficiency be of great significance.
Summary of the invention
In view of the deficiencies of the prior art, the purpose of the present invention is to provide a kind of steamings of the air gap method (AGMD) plate film
Distillation unit, distillating method and application, to achieve the effect that using simple, assembly or disassembly is easy, distillation efficiency is high.
In order to achieve that object of the invention, the invention adopts the following technical scheme:
In a first aspect, the plate film distilling apparatus is by several the present invention provides a kind of plate film distilling apparatus
A distillation unit composition, the distillation unit includes several film frames and several flow-passage grids；
The opposing sides of the film frame is respectively arranged with distillation film and condensation film, the adjacent two angles position of the film frame
It sets and is respectively arranged with film frame fluid passage, the film frame fluid passage includes hotting mask frame fluid passage and freezing mask frame
Fluid passage；
It include several straight line railings inside the flow-passage grid, straight line railing, which separates, forms several inside flow-passage grid
Flow channel for liquids is provided with fluid inlet on the position at opposite two angles of the flow-passage grid, and adjacent with fluid inlet is optional
The position at one angle is provided with flow-passage grid fluid passage；
It is set between the condensation film of film frame one side and the condensation film of next film frame and is provided with flow-passage grid, and
It is set between the distillation film of film frame another side and the distillation film of a upper film frame and is provided with flow-passage grid, the film frame
Fluid passage and flow-passage grid fluid passage are interconnected, several film frames and several flow-passage grids are arranged alternately composition and steam
Evaporate unit.
Plate distilling apparatus provided by the invention, can Optional assembling disassembly, by increasing or decreasing film frame and runner
The combination number of plies of grid, to reach optimal combination and optimal distillation efficiency；And it is set by distillation film and the reasonable of condensation film
It sets, it is established that hot and cold liquid flow channel independent, so that the flowing of two kinds of liquid opposite directions, significantly increases
Heat exchanger effectiveness between fluid, improves distillation efficiency, so that the output efficiency of distillating liquid greatly promotes.
In the present invention, film frame and flow-passage grid alternate intervals are arranged, and distillation is respectively set in the two sides of same film frame
Film and condensation film distill the distillation film arranged relative of film and lower sheet of membrane frame, accompany flow-passage grid between intermediate gap, this
Sample, two distillation films and intermediate flow-passage grid have collectively constituted hot water flux；And have set by the another side of film frame
The condensation film of impervioursness, the condensation film arranged relative with other sheet of membrane frame, intermediate gap equally accompany flow-passage grid,
In this way, two condensation films and intermediate flow-passage grid have collectively constituted cold water channel.Therefore, in distillation unit, cold water channel
Be separated by with hot water channel and separately flow, guarantee between the distillation film on each film frame be between condensation film for hot water channel
Cold water channel；And the superposition arrangement of distillation unit, that is, constitute entire distillation device.
Preferably, supportive grid is provided between the distillation film and condensation film of the film frame, supportive grid is located at film frame
The center of frame.Supportive grid is to the distillation film and condensation film on support membrane frame.
Preferably, the edge side of the film frame is provided with several and produces water aperture.
Multiple production water apertures are arranged in film frame edge side, and the condensed fluid for distilling generation is flowed out from these apertures, collect
Distillate can be obtained.
Preferably, the edge of the film frame is provided with film frame pilot hole.
Pilot hole is generally the edge for being symmetrically disposed in film frame, more convenient for the assembling of device in this way.
Preferably, the straight line railing tail end thickness inside the flow-passage grid alternately reduces.
The tail end thickness of straight line railing alternately reduces, such to can be designed so that liquid in runner according to fixed stream
It is flowed in road direction.
Preferably, the edge of the flow-passage grid is provided with flow-passage grid pilot hole.
Preferably, the distillation film is polytetrafluoroethylene film or polyvinylidene fluoride film.
In the present invention, distillation film is not limited to the film of above two material, any material system with hydrophobic function
At film, can be using as the distillation film in of the invention.
Preferably, the condensation film is ethylene-tetrafluoroethylene copolymer film or polyester film.
Condensation film is a kind of film with impermeability, and liquid is not through with gas.Condensation on the same film frame
The air gap is formed between film and distillation film.
Preferably, the distillation film with a thickness of 100~150 μm, such as can be 100 μm, 105 μm, 110 μm, 115 μ
M, 120 μm, 125 μm, 130 μm, 135 μm, 140 μm, 145 μm or 150 μm etc..
Preferably, the condensation film with a thickness of 40~60 μm, such as can be 40 μm, 45 μm, 50 μm, 55 μm or 60 μm
Deng.
Preferably, the length of the film frame is 200~300mm, such as can be 200 μm, 210 μm, 220 μm, 230 μ
M, 240 μm, 250 μm, 260 μm, 270 μm, 280 μm, 290 μm or 300 μm etc., preferably 250mm.
Preferably, the width of the film frame is 200~300mm, such as can be 200 μm, 210 μm, 220 μm, 230 μ
M, 240 μm, 250 μm, 260 μm, 270 μm, 280 μm, 290 μm or 300 μm etc., preferably 250mm.
Second aspect, the present invention provides a kind of distillating method of plate film distilling apparatus as described in relation to the first aspect,
The described method includes: cooling liquid is flowed by the fluid inlet of flow-passage grid, the fluid inlet by being located at diagonal angle flows out, stream
Cooling liquid out passes through freezing mask frame fluid passage, (heat) flow-passage grid fluid passage and the next stage freezing mask frame of film frame
After fluid passage, into the fluid inlet of next stage (cold) flow-passage grid, liquid is cooled down at this time by being located at this level-one flow-passage grid
The fluid inlet of diagonal angle flows out, and continues through similar fluid passage, flows into next stage, is recycled；
Distillating liquid is flowed by the fluid inlet of the flow-passage grid different from cooling liquid, by the fluid for being located at diagonal angle
Entrance outflow, the distillating liquid of outflow pass through hotting mask frame fluid passage, flow-passage grid fluid passage and the next stage of film frame
After hotting mask frame fluid passage, into the fluid inlet of next stage (heat) flow-passage grid, distillating liquid is by being located at this level-one at this time
The fluid inlet of flow-passage grid diagonal angle flows out, and continues through similar fluid passage, flows into next stage, is recycled；
The distillating liquid moves contrary with cooled liquid stream.
Distillating liquid of the present invention, temperature are higher relative to cooling liquid.
More specifically, cooling liquid is flowed by the fluid inlet of flow-passage grid, by the fluid inlet stream for being located at diagonal angle
Out, the cooling water of outflow is after the freezing mask frame fluid passage of film frame, flow-passage grid fluid passage, into next stage runner
It is diagonal by being located at this level-one flow-passage grid after being flowed in the cold water channel where cooling liquid at this time at the fluid inlet of grid
The fluid inlet at place flows out, and the cold water flowed out from fluid inlet continues to flow into next stage, equally cold using same channel
It flows, is recycled in aquaporin；
Distillating liquid is flowed by the same method with cooling liquid, and only fluid inlet is different, and its
It is to be flowed in hotting mask frame fluid passage.
In whole process, cold liquid flows in cold passage always, and hot liquid flows in the passage of heat always.
In actual motion, cooled liquid stream move direction and distillating liquid flow direction on the contrary, with to the full extent using it is cold,
The temperature difference of hot liquid.Those skilled in the art can according to actual needs and service condition, such as the pressure of hot and cold water flow, the temperature difference,
And the variation of operating parameter, the combination number of plies of film frame and flow-passage grid is increased or decreased, to reach optimal combination.
Preferably, the flowing pressure of the distillating liquid and cooling liquid independently is 0.1~0.2MPa, such as can be with
Be 0.1MPa, 0.11MPa, 0.12MPa, 0.13MPa, 0.14MPa, 0.15MPa, 0.16MPa, 0.17MPa, 0.18MPa,
0.19MPa or 0.2MPa etc..
Preferably, distillation or liquid after cooling are flowed out by production water aperture.
Preferably, dry air is blown into the production water aperture side far from distillation or liquid after cooling outflow.
Condensed water can be closed the aperture of side by flowing out in the aperture of lower section when distillation unit is run, but be retained
The aperture unlatching of side is then conducive to smoothly flowing out for condensed water.In addition, the rate of evaporation is related with the air flowing of evaporating surface,
The air energy of flow enough takes away steam and reduces the vapor concentration of evaporating surface, so that evaporation rate improves.It is single in present invention distillation
When member operation, it is blown into air in the aperture side far from liquid outflow, membrane distillation efficiency will be effectively improved.
In the present invention, the distillating liquid for producing the outflow of water aperture, can be used collection device and is collected.Those skilled in the art
Plate distilling apparatus and reasonable collection device can be collectively constituted more complete distillation recovery in actual assembled equipment by member
Equipment.
The third aspect, the present invention provides a kind of plate film distilling apparatus as described in relation to the first aspect in sea water desalination or
Application in organic solvent separation.
Seawater can efficiently be distilled, realize the desalination of seawater by plate film distilling apparatus provided by the invention；In addition, also
The separation between organic solvent may be implemented, such as can be separation, petroleum ether and the ethyl acetate between dimethyl sulfoxide and water
Between separation etc..It can be miscible between organic solvent, be also possible to two kinds of immiscible liquid.
Compared with the existing technology, the invention has the following advantages:
Plate distilling apparatus provided by the invention, can Optional assembling disassembly, by increasing or decreasing film frame and runner
The combination number of plies of grid, to reach optimal combination and optimal distillation efficiency；And it is set by distillation film and the reasonable of condensation film
It sets, it is established that hot and cold liquid flow channel independent, so that the flowing of two kinds of liquid opposite directions, significantly increases
Heat exchanger effectiveness between fluid, improves distillation efficiency, so that the output efficiency of distillating liquid greatly promotes, output efficiency can
Reach 2.0 liters/square m/h or so, practical application value is high.
Detailed description of the invention
Fig. 1 is the plate film distilling apparatus figure that the embodiment of the present invention 1 provides.
Fig. 2 is film block schematic illustration in the plate film distilling apparatus of the offer of the embodiment of the present invention 1,1- film frame, 2- branch
Grid is supportted, 3- distills film, 4- condensation film, 5- film frame fluid passage, 501- hotting mask frame fluid passage, 502- freezing mask frame liquid
Body channel, 6- produce water aperture, 7- pilot hole.
Fig. 3 be the embodiment of the present invention 1 provide plate film distilling apparatus in flow-passage grid schematic diagram, 8- flow-passage grid,
9- fluid inlet, 10- flow channel for liquids, 11- flow-passage grid fluid passage.
Fig. 4 be when the embodiment of the present invention 2 is distilled distilling apparatus disassemble schematic diagram, 6- produce water aperture, 8- flow-passage grid,
9,9a, 9b, 9c, 12,12a are fluid inlet.
Specific embodiment
The technical scheme of the invention is further explained by means of specific implementation.Those skilled in the art should be bright
, the described embodiments are merely helpful in understanding the present invention, should not be regarded as a specific limitation of the invention.
Embodiment 1
The present embodiment provides a kind of plate film distilling apparatus.
Plate film distilling apparatus is made of four distillation units, and each distillation unit includes a 1 (such as Fig. 2 of film frame
It is shown) and a flow-passage grid 8 (as shown in Figure 3).
The opposing sides of film frame is respectively arranged with distillation film 3 and condensation film 4, the distillation film 3 and condensation film 4 of film frame it
Between be provided with supportive grid 2, be respectively arranged with film frame fluid passage 5, film frame liquid on two adjacent Angle Positions of film frame
Body channel includes that (when actual assembled, two kinds of fluid passages are only for hotting mask frame fluid passage 501 and freezing mask frame fluid passage 502
Need to be adjacent, position can arbitrarily be exchanged), the film frame fluid passage includes hotting mask frame fluid passage and freezing mask frame liquid
Body channel；It produces water aperture 6 and is set to film frame edge side, film frame edge is symmetrically arranged pilot hole 7.
It include several straight line railings inside flow-passage grid 8, straight line railing tail end thickness alternately reduces, and straight line railing separates
Several flow channel for liquids 10 are formed inside flow-passage grid, are provided with fluid inlet 9 on the position at opposite two angles of flow-passage grid,
The position at an optional angle adjacent with fluid inlet 9 is provided with flow-passage grid fluid passage 11, flow-passage grid fluid passage 11
It is that another independence (hot-fluid or coolant liquid) liquid is allowed to walk, without mutually being interfered with flow channel for liquids determined by this flow-passage grid.
It is set between the condensation film 3 of film frame one side and the condensation film 3 of next film frame and is provided with flow-passage grid 8,
And it is set between the distillation film 4 of film frame another side and the distillation film 4 of a upper film frame and is provided with flow-passage grid 8, and
And, it is ensured that one of film frame fluid passage 5 is interconnected with flow-passage grid fluid passage 11, forms one from upper level heat
Complete channels of (cold) flow channel for liquids to hot (cold) flow channel for liquids of next stage.One film frame and a flow-passage grid composition distill
Unit is further arranged alternately to form plate film distilling apparatus, specific as shown in Figure 1.
Wherein, it is 0.2 μm, with a thickness of 120 μm of polytetrafluoroethyltwo two-way stretch composite membranes that distillation film, which is average pore size, cold
Haptogen is the ethylene-tetrafluoroethylene copolymer hyaline membrane with a thickness of 50 μm, and film frame is 250mm × 250mm, effective area is
0.0625m2Film frame.
Film employed in the embodiment of the present invention 1 is to make in unit area production water, energy consumption, cost with described device collocation
With can achieve optimum efficiency.
Embodiment 2
According to the plate film distilling apparatus that embodiment 1 provides, is assembled, then distilled.Distillating method is as follows,
Distilling apparatus dismantling schematic diagram can refer to Fig. 4.
Cooling water is flowed by the fluid inlet 9 of flow-passage grid 8, and the fluid inlet 9a by being located at diagonal angle flows out, outflow
Cooling water pass through film frame freezing mask frame fluid passage, flow-passage grid fluid passage and next stage freezing mask frame fluid passage
(specific flow direction is as arrow is signified at 9a in Fig. 4) afterwards, at the fluid inlet 9b of next stage flow-passage grid, cools down liquid at this time
After flowing in the cold water channel at place, the fluid inlet 9c by being located at this level-one flow-passage grid diagonal angle flows out, and flows out from 9c
Cold water continues through similar fluid passage using same channel, flows into next stage, equally flows in cold water channel
It is dynamic, it is recycled；
Distilled water is flowed by the fluid inlet 12 of the flow-passage grid different from cooling water, is reached at hydrothermal fluid entrance 12a,
Fluid inlet by being located at diagonal angle flows out, and the distilled water of outflow passes through hotting mask frame fluid passage, the runner lattice of film frame
After grid fluid passage and next stage hotting mask frame fluid passage, into the fluid inlet of next stage flow-passage grid, distilled water at this time
Fluid inlet by being located at this level-one flow-passage grid diagonal angle flows out, and continues through similar fluid passage, flows into next stage,
It is recycled and (due to that can not be shown in the Kong Tu of flowing, is not marked)；
Distilled water is contrary with flow of cooling water, that is, sets up cold water hot water flow channel independent, when operation,
Condensed water is flowed out by underlying production water aperture 6, at this time can close the aperture of side, and the aperture of top is kept to open
It opens, is conducive to smoothly flowing out for condensed water in this way.Can also according to actual needs and service condition when operation, such as pressure of cold and hot water flow
The variation of power, the temperature difference and operating parameter increases or decreases the combination number of plies of film frame and flow-passage grid, reaches optimum efficiency.
Embodiment 3
The present embodiment is distilled according to the method for embodiment 2.
Wherein the intake pressure of cooling water is 0.15MPa, inflow temperature by cooler control constant temperature at 28 DEG C, hot water into
Water pressure is 0.15MPa, and inflow temperature maintains 50 DEG C by controllable heater.Condensed water is flowed out by production water aperture 6, (experimental
Device total effective area be 0.25 square metre, measurement in 2 hours produce 1.015 liters of water) production water efficiency be 2.03 liters/square m/h.
Embodiment 4
The present embodiment is distilled according to the method for embodiment 2.
Wherein the intake pressure of cooling water is 0.14MPa, inflow temperature by cooler control constant temperature at 27 DEG C, hot water into
Water pressure is 0.14MPa, and inflow temperature maintains 49 DEG C by controllable heater.Condensed water is flowed out by production water aperture 6, produces water efficiency
For 2.26 liters/square m/h.
Embodiment 5
The present embodiment is distilled according to the method for embodiment 2.
Wherein the intake pressure of cooling water is 0.16MPa, inflow temperature by cooler control constant temperature at 30 DEG C, hot water into
Water pressure is 0.16MPa, and inflow temperature maintains 52 DEG C by controllable heater.Condensed water is flowed out by small hole at bottom part 6, produces water efficiency
For 1.98 liters/square m/h.
In the present embodiment, raw water conductivity is 21.5 milli Siemens, and the conductivity for producing water is 3.74 micro-Siemens, completely full
Sufficient standard for drinking.
Embodiment 6
The present embodiment carries out the concentration and separation of DMSO aqueous solution according to the method for embodiment 2.
Wherein the intake pressure of cooling water is 0.15MPa, and inflow temperature is controlled at 15 DEG C.Preparing weight ratio is 0.5%
DMSO aqueous solution is as distillating liquid, and the intake pressure of distillating liquid is 0.15MPa, and stable temperature control is at 60 DEG C.Condensed water
It is flowed out by production water aperture 6, production water efficiency is 2.48 liters/square m/h.It is right under 200nm wavelength with ultraviolet spectrometry degree instrument
The concentration of DMSO is demarcated, and measuring and producing the concentration of the DMSO in water is 0.08%.
The Applicant declares that the present invention is explained by the above embodiments plate film distilling apparatus of the invention, distillation side
Method and application, but the invention is not limited to above-mentioned processing steps, that is, do not mean that the present invention must rely on above-mentioned processing step
It could implement.It should be clear to those skilled in the art, any improvement in the present invention, to raw material selected by the present invention
Equivalence replacement and addition, the selection of concrete mode of auxiliary element etc., all fall within protection scope of the present invention and the open scope
Within.
Claims (10)
1. a kind of plate film distilling apparatus, which is characterized in that the plate film distilling apparatus is by several distillation unit groups
At the distillation unit includes several film frames and several flow-passage grids；
The opposing sides of the film frame, which is respectively arranged with, distills film and condensation film, on two adjacent Angle Positions of the film frame
It is respectively arranged with film frame fluid passage, the film frame fluid passage includes hotting mask frame fluid passage and freezing mask frame liquid
Channel；
It include several straight line railings inside the flow-passage grid, straight line railing, which separates, forms several liquid inside flow-passage grid
Runner is provided with fluid inlet on the position at opposite two angles of the flow-passage grid, and optional one adjacent with fluid inlet
The position at angle is provided with flow-passage grid fluid passage；
It is set between the condensation film of film frame one side and the condensation film of next film frame and is provided with flow-passage grid, and be arranged
Flow-passage grid, the film frame liquid are provided between the distillation film of film frame another side and the distillation film of a upper film frame
Channel is interconnected with flow-passage grid fluid passage, several film frames and several flow-passage grids are arranged alternately composition distillation list
Member.
2. plate film distilling apparatus according to claim 1, which is characterized in that the distillation film of the film frame and condensation
Supportive grid is provided between film, supportive grid is located at the center of film frame.
3. plate film distilling apparatus according to claim 1 or 2, which is characterized in that the edge side of the film frame
It is provided with several and produces water aperture.
4. plate film distilling apparatus according to any one of claim 1-3, which is characterized in that the side of the film frame
Edge is provided with film frame pilot hole.
5. plate film distilling apparatus described in any one of -4 according to claim 1, which is characterized in that in the flow-passage grid
The straight line railing tail end thickness in portion alternately reduces；
Preferably, the edge of the flow-passage grid is provided with flow-passage grid pilot hole.
6. plate film distilling apparatus according to any one of claims 1-5, which is characterized in that the distillation film is poly-
Tetrafluoroethylene or polyvinylidene fluoride film；
Preferably, the condensation film is ethylene-tetrafluoroethylene copolymer film or polyester film.
7. plate film distilling apparatus according to claim 1 to 6, which is characterized in that the thickness of the distillation film
Degree is 100~150 μm；
Preferably, the condensation film with a thickness of 40~60 μm；
Preferably, the length of the film frame is 200~300mm, preferably 250mm；
Preferably, the width of the film frame is 200~300mm, preferably 250mm.
8. the distillating method of plate film distilling apparatus described in any one of -7 according to claim 1, which is characterized in that described
Method includes: that cooling liquid is flowed by the fluid inlet of flow-passage grid, and the fluid inlet by being located at diagonal angle flows out, outflow
Cooling liquid passes through freezing mask frame fluid passage, flow-passage grid fluid passage and the next stage freezing mask frame fluid passage of film frame
Afterwards, into the fluid inlet of next stage flow-passage grid, liquid is cooled down at this time by the fluid positioned at this level-one flow-passage grid diagonal angle
Entrance outflow, continues to flow into next stage, is recycled；
Distillating liquid is flowed by the fluid inlet of the flow-passage grid different from cooling liquid, by the fluid inlet for being located at diagonal angle
Outflow, the distillating liquid of outflow pass through hotting mask frame fluid passage, flow-passage grid fluid passage and the next stage hotting mask of film frame
After frame fluid passage, into the fluid inlet of next stage flow-passage grid, distillating liquid is by being located at this level-one flow-passage grid at this time
The fluid inlet of diagonal angle flows out, and continues to flow into next stage, is recycled；
The distillating liquid moves contrary with cooled liquid stream.
9. distillating method according to claim 8, which is characterized in that the flowing pressure of the distillating liquid and cooling liquid
It independently is 0.1~0.2MPa；
Preferably, distillation or liquid after cooling are flowed out by production water aperture；
Preferably, dry air is blown into the production water aperture side far from distillation or liquid after cooling outflow.
10. plate film distilling apparatus described in any one of -7 is separated in sea water desalination or organic solvent according to claim 1
In application.
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