CN103566775B - The Preparation equipment of composite separating film - Google Patents
The Preparation equipment of composite separating film Download PDFInfo
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- CN103566775B CN103566775B CN201210424318.3A CN201210424318A CN103566775B CN 103566775 B CN103566775 B CN 103566775B CN 201210424318 A CN201210424318 A CN 201210424318A CN 103566775 B CN103566775 B CN 103566775B
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- 239000002131 composite material Substances 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000000463 material Substances 0.000 claims abstract description 32
- 239000007788 liquid Substances 0.000 claims abstract description 31
- 238000001035 drying Methods 0.000 claims abstract description 28
- 238000006243 chemical reaction Methods 0.000 claims abstract description 21
- 238000012805 post-processing Methods 0.000 claims abstract description 17
- 230000007704 transition Effects 0.000 claims abstract description 10
- 238000007906 compression Methods 0.000 claims description 16
- 230000006835 compression Effects 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 13
- 239000011229 interlayer Substances 0.000 claims description 7
- 238000001179 sorption measurement Methods 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 claims description 3
- 239000003463 adsorbent Substances 0.000 abstract description 3
- 230000000704 physical effect Effects 0.000 abstract 1
- 239000010408 film Substances 0.000 description 44
- 239000012528 membrane Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 238000012695 Interfacial polymerization Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000000137 annealing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000005496 tempering Methods 0.000 description 3
- 150000001412 amines Chemical class 0.000 description 2
- 239000008346 aqueous phase Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000010612 desalination reaction Methods 0.000 description 2
- 238000011033 desalting Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000010406 interfacial reaction Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 238000001223 reverse osmosis Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000007766 curtain coating Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000001471 micro-filtration Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Abstract
The present invention relates to a kind of Preparation equipment of composite separating film, comprise two material retractable frames, reaction frame, two solution tanks, liquid measure control roll group, two film drying casees and post processing water tanks; Wherein two unwinding and rewinding framves are placed in the rear and front end of described equipment respectively, solution tank and liquid measure control roll group are arranged in reaction frame, and two solution tanks are located at the both sides of liquid measure control roll group respectively, two film drying casees are located at the both sides of post processing water tank respectively; First material retractable frame, reaction frame, the first solution tank, liquid measure control roll group, the second solution tank, the first film drying box, post processing water tank, the second film drying case are connected with the second material retractable frame by transition deflector roll by described composite separating film successively.Present device has compact conformation, accurately can control adsorbent solution content in supporter and the higher feature of drying efficiency, makes the composite separating film physical property that obtains good.
Description
Technical field
The present invention relates to a kind of Preparation equipment of composite separating film, particularly relate to a kind of equipment utilizing interfacial polymerization to prepare composite separating film.
Background technology
Membrane technology is a kind of novel isolation technics, and nearly development decades rapidly, obtains extensive use in fields such as water treatment, chemical industry, biology, medicine, food.Preparation of Thin Film Composite Membrane by Interfacial Polymerization Method be utilize two kinds of reactivities very high monomer at two mutual exclusive solvent interface place polymerization reaction take places, thus on porous supporting body, form a very thin compacted zone.
Interfacial polymerization is utilized to be main membrane preparation method, detailed process immerses in the solution A containing active monomer a by supporter (normally micro-filtration or milipore filter), excess solution A is discharged after abundant infiltration, immerse subsequently in the solution B containing another kind of reactivity very high monomer b and carry out polymerisation, because kind of the solvent of two in solution A and solution B is immiscible, reaction only occurs in the interface of two kinds of solvents, thus forms compacted zone on supporter.Final products are formed again through the aftertreatment technologys such as super-dry, high and low temperature water tank alternate immersion etc.Because reaction occurs over just interface, therefore generate polymer very thin, permeability and selective all good.And the key of the method is the residual volume controlling solution A in supporter, and then control suitable diffusion velocity and composite bed thickness, to obtain desirable composite membrane performance.Existing equipment does not have liquid measure controlling organization after supporter is by solution A groove, directly enters B solution groove; Composite membrane is walked in film drying case will have transition roller to support; Each treatment step of post processing water tank is all a self-contained water tank.This structure has following problem: 1. owing to not having liquid measure control structure, the distribution of solution A nature curtain coating, and due to the surface tension of liquid, solution A cannot ensure homogeneous at substrate surface solution content, and the solution chemistry reaction of different amount makes desalination layer unstable; 2. desalination layer initial reaction stage is more fragile, its surface of the transition roller easy damaged in film drying case, and excessively slow air-dry speed affects production efficiency; 3. independently post processing tank makes the process structure dispersions such as annealing tempering, not compact.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of compact conformation, accurately can control adsorbent solution content in supporter and the higher equipment preparing composite separating film of drying efficiency.
For reaching above-mentioned purpose, the Preparation equipment of a kind of composite separating film of the present invention, comprises two material retractable frames, reaction frame, two solution tanks, liquid measure control roll group, two film drying casees and post processing water tanks; Wherein two material retractable frames are placed in the rear and front end of described equipment respectively, solution tank and liquid measure control roll group are arranged in reaction frame, and two solution tanks are located at the both sides of liquid measure control roll group respectively, two film drying casees are located at the both sides of post processing water tank respectively; First material retractable frame, reaction frame, the first solution tank, liquid measure control roll group, the second solution tank, the first film drying box, post processing water tank, the second film drying case are connected with the second material retractable frame by transition deflector roll by described composite separating film successively.
The Preparation equipment of composite separating film of the present invention, wherein said liquid measure control roll group is fixed in reaction frame, containing compression roller, stationary roll, two absorption rod, low rubbing cylinder and proportional dump valves, wherein low rubbing cylinder is communicated with proportional dump valve by tracheae, proportional dump valve is communicated with source of the gas, compression roller is connected with low rubbing cylinder, compresses and adsorb the pre-close contact of rod with two below stationary roll above stationary roll with compression roller.Stationary roll roll surface car has two dimensional development screw thread (helix launched to both sides), spreads for uniform liquid.
The Preparation equipment of composite separating film of the present invention, also comprises the variable-frequency heating blower fan be connected with film drying case by pipeline.
The Preparation equipment of composite separating film of the present invention, upper and lower staggered tuyere is provided with in wherein said film drying case, tuyere both-side opening, extended distance 2 ~ 3mm, makes the blast that formation is certain, tuyere is dried to film simultaneously, without the mechanism such as carrying roller or guide roller (existing film drying case is often provided with the carrying roller of support film transmission) in case, be only suspended in the air by wind-force, heating blower adopts Frequency Converter Control, realize speed continuous control, control blowing amount and wind speed make material surface uniform dry.
The Preparation equipment of composite separating film of the present invention, wherein said post processing water tank is heat treatment integral type water tank, and be welded by stainless steel materials, in water tank, transition roller is installed up and down, and material is fully contacted with liquid; In heat treatment water tank, welding insulating interlayer is divided into several region, fill insulant material in insulating interlayer, and the water temperature in variant region is independent of each other, and realizes the Technologies for Heating Processing such as annealing, tempering and completes in same water tank.
The invention difference from existing technology is, the present invention has added liquid measure control roll group between two solution tanks, passing ratio pressure regulator valve accurately controls bleed pressure, make the compression roller be connected with low rubbing cylinder to the constant pressure of stationary roll, make the decrement of base material (i.e. supporter) identical, the amount of solution squeezed out also keeps constant; The bidirectional helical of the solution squeezed out on stationary roll flattens line and is uniformly dispersed on stationary roll roll surface, stationary roll is metallic roll not adsorbent solution, solution contacts with the adsorption roller of below along with the rotation of stationary roll, thus unnecessary solution is adsorbed onto on adsorption roller drains, reach the object that liquid measure is constant.Present device can control the residual volume of solution in first solution tank in supporter, and then solute to be controlled in oil-phase solution to the diffusion velocity in aqueous phase solution, and the amount of remaining amine substance can be controlled, interfacial reaction is completed under quantitative prerequisite, make composite bed thickness controlled thus, to obtain desirable composite separating film performance, through test, the desalting ability of reverse osmosis membrane is increased to 99.5% from 98%, and water flux is increased to 35gfd from 25gfd.
Be described further below in conjunction with the Preparation equipment of accompanying drawing to composite separating film of the present invention.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the Preparation equipment of composite separating film of the present invention;
Fig. 2 is the structural representation of liquid measure control roll group in present device;
Fig. 3 is the membrane pores compression front and back schematic diagram of the composite separating film that present device obtains;
Fig. 4 is air nozzle structure and tuyere arrangement mode structural representation in film drying case in present device;
Fig. 5 is fixing roller surface structural representation in present device;
Fig. 6 is post processing water tank internal structure schematic diagram in present device.
Description of reference numerals: 1-material retractable frame; 2-reacts frame; 3-solution tank; 4-liquid measure control roll group; 5-film drying case; 6-variable-frequency heating blower fan; 7-post processing water tank; 8-compression roller; 9-stationary roll; 10-adsorbs rod; 11-low rubbing cylinder; 12-proportional dump valve; 13-tuyere; 14-composite separating film; 15-transition roller; 16-two dimensional development screw thread; 17-insulating interlayer.
Detailed description of the invention
Be below embodiment etc., but content of the present invention is not limited to the scope of these embodiments.
Embodiment
As shown in Figure 1, each material retractable frame 1 in front and back of the Preparation equipment of composite separating film of the present invention, front end retractable frame 1 body is provided with drive motors, for the active uncoiling of unreeling material.Reaction frame 2 is welded by section bar, frame is provided with transition deflector roll, enters solution tank 3 for directing material.Solution tank 3 is welded with stainless steel materials, in groove, be provided with transition roller, leaves certain space with bottom, makes material fully soak absorption.Between two solution tanks 3, install a liquid measure control roll group 4, solution tank 3 and liquid measure control roll group 4 are arranged in reaction frame 2, and liquid measure control roll group 4 is fixed in reaction frame 2.Liquid measure control roll group 4 is containing compression roller 8, stationary roll 9, two absorption rod 10, low rubbing cylinder 11 and proportional dump valve 12, wherein low rubbing cylinder 11 is communicated with proportional dump valve 12 by tracheae, proportional dump valve 12 is communicated with source of the gas, compression roller 8 is connected with low rubbing cylinder 11, compresses and adsorb the pre-close contact of rod 10 below stationary roll 9 with two to install above stationary roll 9 with compression roller 8.The low rubbing cylinder 11 that the compression roller 8 passing ratio pressure regulator valve 12 of top controls provides downforce, extrudes the redundant solution that supporter adsorbs at first solution tank 3; The helix that stationary roll 9 roll surface car has two dimensional development screw thread 16(to launch to both sides) as shown in Figure 5, spread for uniform liquid; Be two adsorption rollers 10 below stationary roll 9, itself and stationary roll 9 are fitted tightly while to installation certain pretightning force, roll surface is porous, expanded material, and car has helicla flute, for absorbing and draining the solution extruded.Reaction frame 2, solution tank 3 and liquid measure control roll group 4 form reaction zone, it is air-flotation type film drying case 5 after reaction zone, air blows out from tuyere 13 through variable-frequency heating blower fan 6, tuyere 13 both-side opening in film drying case 5, extended distance 2 ~ 3mm, make the blast that formation is certain, film drying case 5 is inner without the mechanism such as carrying roller and guide roller, and composite separating film 14 is only suspended in the air by wind-force, and heating blower 6 adopts Frequency Converter Control, realize speed continuous control, control blowing amount and wind speed.For making material surface uniform dry, upper and lower tuyere is spaced, as shown in Figure 4.Install a post processing water tank 7 between two film drying casees 5, post processing water tank 7 is welded by stainless steel materials for heat treatment integral type water tank, and as shown in Figure 6, in water tank, transition roller about 15 is installed, and material is fully contacted with liquid; In heat treatment water tank 7, welding insulating interlayer 17 is divided into several region, fill insulant material 18 in insulating interlayer 17, and the water temperature in variant region is independent of each other, and realizes the Technologies for Heating Processing such as annealing, tempering and completes in same water tank.The material retractable frame 1 of rear end is provided with the traction of motor for material, photoelectric error correction machine is installed in bottom makes material rolling neat.
Test example
Film moisture content empirical equation is pushed over:
Source of the gas air pressure: P (Mpa)
Cylinder inner wall diameter: R (mm)
Compression roller is conducted oneself with dignity: G (N)
Compression roller produces pressure: F (N)
Damped coefficient is k
Film decrement x (μm)
Moisture content m
Moisture content coefficient: γ
For measuring the relation of squeeze pressure and film decrement and water content, design experiment method is as follows:
The circular substrate coupons of cut-off footpath 100mm, after fully soaking in the solution, weighs and records data.Then under being placed on applanation machine, to sample pressurization in units of 10N, often increase one-shot measurement two parallel platen spacing, claim sample weight, record data; Until sample cannot recompress position.
Test data:
| Apply force value (N) | Film thickness (μm) | Sample weight (g) |
| 0 | 150 | 1.55 |
| 10 | 147 | 1.455 |
| 20 | 145 | 1.356 |
| 30 | 143 | 1.264 |
| 40 | 140 | 1.162 |
| 50 | 138 | 1.07 |
| 60 | 136 | 0.962 |
| 70 | 135 | 0.960 |
| 80 | 135 | 0.960 |
Record data according in upper table, damped coefficient k can be found out and water content coefficient gamma reaches its maximum compressibility X after film pressurized
minbefore=135 μm, decrement and force value are close to linear relationship.
Therefore regarded as a Hookean spring system, according to elastic force computing formula:
F=kx can lead x=F/k
Known pressure, cylinder diameter, to conduct oneself with dignity with roller, can obtain:
F=G+P×πR
2
Film this as loose structure, observation is carried out to film cross section and can find out its pressurized metapore volume-diminished, as shown in Figure 3, according to test data can to obtain in hole moisture relevant with space decrement, namely only relevant with film decrement x, and test draws moisture content coefficient: γ
Therefore can obtain.Film moisture content:
m=γ×x
The present invention by having added liquid measure control roll group between two solution tanks, passing ratio pressure regulator valve accurately controls bleed pressure, make the compression roller be connected with low rubbing cylinder to the constant pressure of stationary roll, make the decrement of base material (i.e. supporter) identical, thus the residual volume of solution in first solution tank in supporter can be controlled, and then solute to be controlled in oil-phase solution to the diffusion velocity in aqueous phase solution, and the amount of remaining amine substance can be controlled, interfacial reaction is completed under quantitative prerequisite, make composite bed thickness controlled thus, to obtain desirable composite separating film performance, through test, the desalting ability of reverse osmosis membrane is increased to 99.5% from 98%, water flux is increased to 35gfd from 25gfd.
Above-described embodiment is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determines.
Claims (4)
1. a Preparation equipment for composite separating film, comprises two material retractable frames, reaction frame, two solution tanks, liquid measure control roll group, two film drying casees and post processing water tanks; Wherein two unwinding and rewinding framves are placed in the rear and front end of described equipment respectively, solution tank and liquid measure control roll group are arranged in reaction frame, and two solution tanks are located at the both sides of liquid measure control roll group respectively, two film drying casees are located at the both sides of post processing water tank respectively; First material retractable frame, reaction frame, the first solution tank, liquid measure control roll group, the second solution tank, the first film drying box, post processing water tank, the second film drying case are connected with the second material retractable frame by transition deflector roll by described composite separating film successively;
Described liquid measure control roll group is fixed in reaction frame, containing compression roller, stationary roll, two adsorption rollers, low rubbing cylinder and proportional dump valves, wherein low rubbing cylinder is communicated with proportional dump valve by tracheae, proportional dump valve is communicated with source of the gas, compression roller is connected with low rubbing cylinder, compress with compression roller above stationary roll and below stationary roll with two pre-close contact of adsorption roller.
2. equipment according to claim 1, is characterized in that: also comprise the variable-frequency heating blower fan be connected with film drying case by pipeline.
3. equipment according to claim 1, it is characterized in that: be provided with upper and lower staggered tuyere in described film drying case, tuyere both-side opening, extended distance 2 ~ 3mm, without carrying roller or guide roller mechanism in film drying case, composite separating film is only suspended in by wind-force in the air.
4. equipment according to claim 1, is characterized in that: described post processing water tank is welded by stainless steel materials, and inside is provided with the transition roller installed up and down; Also weld insulating interlayer in heat treatment water tank, its inner space is divided into multiple region, fill insulant material in insulating interlayer, the water temperature in variant region is independent of each other.
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| CN201210424318.3A CN103566775B (en) | 2012-10-30 | 2012-10-30 | The Preparation equipment of composite separating film |
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| CN201210424318.3A CN103566775B (en) | 2012-10-30 | 2012-10-30 | The Preparation equipment of composite separating film |
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| CN103566775B true CN103566775B (en) | 2015-10-21 |
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| CN104534852B (en) * | 2014-12-31 | 2017-05-03 | 云南一通太阳能科技有限公司 | Flow crossing type food material drying device with bidirectional flow conversion function |
| CN106501299B (en) * | 2016-10-18 | 2019-07-26 | 北京印刷学院 | A kind of self assembly printed electronic product continuous sintering experimental provision |
| CN109364764A (en) * | 2018-12-19 | 2019-02-22 | 苏州瑞欧纳米设备开发有限公司 | Reverse osmosis membrane or cleaning method and system in nanofiltration membrane preparation process |
| CN112535954B (en) * | 2019-09-21 | 2022-05-27 | 龙岩市瑞泽环保科技有限公司 | Preparation method and application of antibacterial reverse osmosis membrane |
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| JP3999367B2 (en) * | 1998-07-27 | 2007-10-31 | 日東電工株式会社 | Manufacturing method of sheet-like separation membrane |
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Inventor after: Lin Jingfeng Inventor after: Wang Wei Inventor after: Li Zhenning Inventor after: Li Weijun Inventor after: Zhang Yingying Inventor before: Lin Jingfeng Inventor before: Li Zhenning Inventor before: Li Weijun Inventor before: Zhang Yingying |
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Free format text: CORRECT: INVENTOR; FROM: LIN JINGFENG LI ZHENNING LI WEIJUN ZHANG YINGYING TO: LIN JINGFENG WANG WEI LI ZHENNING LI WEIJUN ZHANG YINGYING |
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Denomination of invention: Preparation equipment of composite separation membrane Effective date of registration: 20200820 Granted publication date: 20151021 Pledgee: BEIJING JIUZHANG ENVIRONMENTAL ENGINEERING Co.,Ltd. Pledgor: SHANDONG JOZZON MEMBRANE TECHNOLOGY Co.,Ltd. Registration number: Y2020990001001 |
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