CN104707767A - Production method for reverse osmosis membrane and device - Google Patents
Production method for reverse osmosis membrane and device Download PDFInfo
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- CN104707767A CN104707767A CN201410857424.XA CN201410857424A CN104707767A CN 104707767 A CN104707767 A CN 104707767A CN 201410857424 A CN201410857424 A CN 201410857424A CN 104707767 A CN104707767 A CN 104707767A
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- reverse osmosis
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Abstract
The invention relates to a production method for a reverse osmosis membrane and a device. The defect that an interfacial polymerization method is adopted to produce the reverse osmosis membrane, base materials coated with polyamine react through organic phase substances during the producing process of the reverse osmosis membrane according to an existing interfacial polymerization method, and the organic phase substances react are overcome, so that the concentration is small, and the quality of a product is unstable; the method that the organic phase coating is changed to a slot squeezing quantitative coating method replaces an original dip-coating mode, before drying, coating is conducted through a slot squeezing coating head, the slot squeezing coating head can move forward and backward in the direction parallel to the base materials, and the distance between the slot squeezing coating head and a drying oven is adjusted to adjust the contact reaction time of an organic phase and a water phase. Slight excessive coating can be adopted in organic phase slot squeezing coating, before the base materials enter an opening of the drying oven, an air knife (5) is used for blow-drying liquid on the surfaces of the base materials, and the liquid flows to a leakage liquid collecting groove (6) below the air knife (5) to recycle, so that redundant liquid needing to volatilize is reduced when the base materials entering a drying system, and the energy consumption is reduced. The slot squeezing coating head can be arranged above the base materials perpendicularly or slantly, and the slant angle is the included angle between the slot squeezing coating head and the horizontal plane ranging from 0 degree to 90 degrees.
Description
Technical field
The present invention relates to a kind of reverse osmosis membrane manufacture method and device, be especially applied to the coating process in interfacial polymerization anti-seepage membrane production process and device equipment technology field.
Background technology
Existingly produce in polyamide-based epidermal area reverse osmosis membrane production line organic phase coating process by interfacial polymerization, reactant liquor because of with substance reaction in aqueous phase and concentration is diminished, cause product quality unstable; The reaction time of organic phase can not require to adjust according to different process, makes existing equipment be difficult to meet reverse osmosis membrane production requirement.
Summary of the invention
The present invention designs for overcoming above-mentioned shortcoming.
A kind of reverse osmosis membrane manufacturing installation, by interfacial polymerization film forming, comprise aqueous phase dispense tip, organic phase dispense tip and drying system, in the production process of reverse osmosis membrane, at base material after aqueous phase dipping, before entering oven dry, organic phase is coated with by slit extrusion coated head, slit extrusion coated head can do movable on base material parallel direction shifting sledge 4, in order to change dispense tip to baking oven distance, thus regulate organic phase and aqueous phase haptoreaction time, before entering baking oven mouth, with air knife, substrate surface liquid is dried up, flow in lower square groove and recycle, the liquid of need volatilization unnecessary when making like this to enter drying system reduces, save energy consumption.Slot coated head can vertically be placed on above base material, or slant setting is above base material, angle of inclination from horizontal plane angle 0 ° to 90 °.
There is through runner slot coated head lip inside, can water flowing or other liquid, in order to realize the steady temperature of lip inner fluid.
The cell body of polyamine aqueous impregnation coating pan adopts the form of hollow, and centre can the liquid such as water flowing, band thermostatic control function.
Slit extrusion coated head can do movable on the shifting sledge 4 that slit extrudes coating head, locks after moving to desired location with shop bolt.Slide rail can use line slideway form.
A kind of reverse osmosis membrane manufacture method, it is the manufacture method of the complex reverse osmosis membrane of the porosity support body comprising polyamide-based epidermal area and support it, comprise: operation A, it is while make porosity support body move, while apply the aqueous solution a containing the compound with more than 2 active aminos on this porosity support body, form aqueous solution coating; Process B, it keeps described aqueous solution coating on porosity support body, makes described aqueous solution a permeate in the micropore of porosity support body; Operation C, it makes described aqueous solution a remain in the micropore of porosity support body, while remove described aqueous solution coating; And step D; it is after operation C, and on porosity support surface, the organic solution b of coating containing multifunctional acyl halide, makes this organic solution b contact with described aqueous solution a and carry out interfacial polymerization; form polyamide-based epidermal area thus, and make complex reverse osmosis membrane continuously.
A kind of reverse osmosis membrane manufacture method, adopt interfacial polymerization film forming, for overcome existing interfacial polymerization reverse osmosis membrane production process in reacted by material in organic phase through scribbling polyamine base material, make substance reaction in organic phase and make concentration thinning, cause product quality unstable, the method that slit extruding is quantitatively coated with is used in organic phase coating of the present invention instead, replace original dip coating manner, before entering oven dry, be coated with by slit extrusion coated head, slit extrusion coated head can do movable in base material parallel direction, regulate slot coated head to the distance of baking oven, in order to regulate organic phase and aqueous phase haptoreaction time.Organic phase slit extrusion coated can adopt micro-excessive coating, then before entering baking oven mouth, with air knife 5, substrate surface liquid is dried up, flow in below leakage feeder 6 and recycle, the liquid of need volatilization unnecessary when making like this to enter drying system reduces, and saves energy consumption.Slot coated head can vertically be placed on above base material, or slant setting is above base material, angle of inclination from horizontal plane angle 0 ° to 90 °.
First paragraph drying baker adopts upper and lower micropore blow structure, and in baking oven, negative pressure is comparatively large, and such solvent volatilization is very fast, avoids again the too high damage film formation surface of wind speed.
Organic phase refers to the polynary carboxylic acid halides such as pyromellitic trimethylsilyl chloride, and aqueous phase refers to the polyamine aqueous solution, as m-phenylene diamine (MPD) solution.The production of reverse osmosis membrane uses amine monomers and pyromellitic trimethylsilyl chloride monomer usually, aramid layer surface is caused to possess the chemical groups such as part carboxyl, amino and hydroxyl, make full use of this part group, will effectively improve the bond strength of anti-pollution layer and make up face defect.
Accompanying drawing explanation
Accompanying drawing is the schematic diagram of device.
In figure, 1 is polyamine aqueous impregnation coating pan, and 2 is deflector roll, and 3 is slit extruding coating head, and 4 is the shifting sledge that slit extrudes coating head, and 5 is air knife, and 6 is leakage feeder, and 7 is first paragraph drying baker.
Detailed description of the invention
A kind of reverse osmosis membrane manufacturing installation, by interfacial polymerization film forming, comprise aqueous phase dispense tip, organic phase dispense tip and drying system, in the production process of reverse osmosis membrane, at base material after aqueous phase dipping, before entering oven dry, organic phase is coated with by slit extrusion coated head, slit extrusion coated head can do movable in base material parallel direction, in order to change dispense tip to baking oven distance, thus regulate organic phase and aqueous phase haptoreaction time, before entering baking oven mouth, with air knife, substrate surface liquid is dried up, flow in lower square groove and recycle, the liquid of need volatilization unnecessary when making like this to enter drying system reduces, save energy consumption.Slot coated head can vertically be placed on above base material, or slant setting is above base material, angle of inclination from horizontal plane angle 0 ° to 90 °.
There is through runner slot coated head lip inside, can water flowing or other liquid, in order to realize the steady temperature of lip inner fluid.
The cell body of polyamine aqueous impregnation coating pan adopts the form of hollow, and centre can the liquid such as water flowing, band thermostatically-controlled equipment.
Slit extrusion coated head can do movable on the shifting sledge 4 that slit extrudes coating head, locks after moving to desired location with shop bolt.Slide rail can use line slideway form.
A kind of reverse osmosis membrane manufacture method, it is the manufacture method of the complex reverse osmosis membrane of the porosity support body comprising polyamide-based epidermal area and support it, comprise: operation A, it is while make porosity support body move, while apply the aqueous solution a containing the compound with more than 2 active aminos on this porosity support body, form aqueous solution coating; Process B, it keeps described aqueous solution coating on porosity support body, makes described aqueous solution a permeate in the micropore of porosity support body; Operation C, it makes described aqueous solution a remain in the micropore of porosity support body, while remove described aqueous solution coating; And step D; it is after operation C, and on porosity support surface, the organic solution b of coating containing multifunctional acyl halide, makes this organic solution b contact with described aqueous solution a and carry out interfacial polymerization; form polyamide-based epidermal area thus, and make complex reverse osmosis membrane continuously.
A kind of reverse osmosis membrane manufacture method, adopt interfacial polymerization film forming, for overcome existing interfacial polymerization reverse osmosis membrane production process in reacted by material in organic phase through scribbling polyamine base material, make substance reaction in organic phase and make concentration thinning, cause product quality unstable, the method that slit extruding is quantitatively coated with is used in organic phase coating of the present invention instead, replace original dip coating manner, before entering oven dry, be coated with by slit extrusion coated head, slit extrusion coated head can do movable in base material parallel direction, regulate slot coated head to the distance of baking oven, in order to regulate organic phase and aqueous phase haptoreaction time.Organic phase slit extrusion coated can adopt micro-excessive coating, then before entering baking oven mouth, with air knife 5, substrate surface liquid is dried up, flow in below leakage feeder 6 and recycle, the liquid of need volatilization unnecessary when making like this to enter drying system reduces, and saves energy consumption.Slot coated head can vertically be placed on above base material, or slant setting is above base material, angle of inclination from horizontal plane angle 0 ° to 90 °.
First paragraph drying baker 7 adopts upper and lower micropore blow structure, and in baking oven, negative pressure is comparatively large, and such solvent volatilization is very fast, avoids again the too high damage film formation surface of wind speed.
Organic phase refers to the polynary carboxylic acid halides such as pyromellitic trimethylsilyl chloride, and aqueous phase refers to the polyamine aqueous solution, as m-phenylene diamine (MPD) solution.The production of reverse osmosis membrane uses amine monomers and pyromellitic trimethylsilyl chloride monomer usually, aramid layer surface is caused to possess the chemical groups such as part carboxyl, amino and hydroxyl, make full use of this part group, will effectively improve the bond strength of anti-pollution layer and make up face defect.
Other prior aries and technique, produce reverse osmosis membrane correlation technique and equipment with reference to existing interfacial polymerization, no longer repeats to discuss.
Claims (10)
1. a reverse osmosis membrane manufacture method, adopt interfacial polymerization film forming, it is characterized in that: in the production process of interfacial polymerization reverse osmosis membrane, the method that slit extruding is quantitatively coated with is used in organic phase coating instead, replace original dip coating manner, before entering oven dry, be coated with by slit extrusion coated head, slit extrusion coated head can do movable in base material parallel direction, regulate slot coated head to the distance of baking oven, in order to regulate organic phase and aqueous phase haptoreaction time.
2. a kind of reverse osmosis membrane manufacture method according to claim 1, is characterized in that: organic phase slit extrusion coated adopts micro-excessive coating, before then entering baking oven mouth, with air knife, substrate surface liquid is dried up, and flows in below leakage feeder and recycles.
3. a kind of reverse osmosis membrane manufacture method according to claim 1, it is characterized in that: slot coated head tilt is placed on above base material, angle of inclination from horizontal plane angle 0 ° to 90 °, or make angle of inclination from can adjustment structure arbitrarily with horizontal plane angle 0 ° to 90 °.
4. a kind of reverse osmosis membrane manufacture method according to claim 1, is characterized in that: first paragraph drying baker adopts upper and lower micropore to blowing structure, and in baking oven, negative pressure is larger.
5. the device of a kind of reverse osmosis membrane manufacture method according to claim 1, comprise aqueous phase dispense tip, organic phase dispense tip and drying system, it is characterized in that: in the production process of reverse osmosis membrane, at base material after aqueous phase dipping, before entering oven dry, organic phase is coated with by slit extrusion coated head, and slit extrusion coated head can do movable in base material parallel direction, in order to change dispense tip to baking oven distance, thus regulate organic phase and aqueous phase haptoreaction time.
6. the device of a kind of reverse osmosis membrane manufacture method according to claim 5, it is characterized in that: slot coated head tilt is placed on above base material, angle of inclination from horizontal plane angle 15 ° to 90 °, or make angle of inclination from can adjustment structure arbitrarily with horizontal plane angle 15 ° to 90 °.
7. the device of a kind of reverse osmosis membrane manufacture method according to claim 5, is characterized in that: slot coated head is vertically placed on above base material.
8. the device of a kind of reverse osmosis membrane manufacture method according to claim 5, is characterized in that: there is through runner slot coated head lip inside, water flowing or other liquid, in order to realize the steady temperature of lip inner fluid.
9. the device of a kind of reverse osmosis membrane manufacture method according to claim 5, is characterized in that: before entering baking oven mouth, with air knife, substrate surface liquid is dried up, flow in lower square groove and recycle.
10. the device of a kind of reverse osmosis membrane manufacture method according to claim 5, is characterized in that: first paragraph drying baker adopts upper and lower micropore to blowing structure, and in baking oven, negative pressure is larger.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105749758A (en) * | 2016-03-28 | 2016-07-13 | 南京工业大学 | Coating and coagulating device and method for preparing liner-enhanced type hollow fiber composite membranes |
| CN109745863A (en) * | 2018-12-26 | 2019-05-14 | 天津膜天膜科技股份有限公司 | The device and method of continuous production high flux hollow fibre nanofiltration membrane |
| CN110537721A (en) * | 2019-09-27 | 2019-12-06 | 四川中烟工业有限责任公司 | Reconstituted tobacco for heating cigarettes and improved dry preparation method thereof |
| CN111097652A (en) * | 2019-09-25 | 2020-05-05 | 宁波水艺膜科技发展有限公司 | Multifunctional filtering membrane production process and device |
| CN111467981A (en) * | 2020-04-13 | 2020-07-31 | 浙江迪萧环保科技有限公司 | Preparation method of high-power interception reinforced nano-structure composite membrane |
| CN111729617A (en) * | 2020-08-06 | 2020-10-02 | 山东九章膜技术有限公司 | Jet device for interfacial polymerization reaction |
| CN112452163A (en) * | 2020-09-30 | 2021-03-09 | 西安航天华阳机电装备有限公司 | Water treatment composite membrane forming interface polymerization static reaction device |
| CN112516810A (en) * | 2020-11-11 | 2021-03-19 | 南京工业大学 | Method and device for manufacturing nanofiltration membrane |
| CN113617233A (en) * | 2020-05-09 | 2021-11-09 | 浙江迪萧环保科技有限公司 | Preparation method of novel nano-structure composite membrane |
| CN113828492A (en) * | 2020-06-24 | 2021-12-24 | 中国科学院化学研究所 | Continuous coating system and coating method |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105749758A (en) * | 2016-03-28 | 2016-07-13 | 南京工业大学 | Coating and coagulating device and method for preparing liner-enhanced type hollow fiber composite membranes |
| CN109745863A (en) * | 2018-12-26 | 2019-05-14 | 天津膜天膜科技股份有限公司 | The device and method of continuous production high flux hollow fibre nanofiltration membrane |
| CN111097652A (en) * | 2019-09-25 | 2020-05-05 | 宁波水艺膜科技发展有限公司 | Multifunctional filtering membrane production process and device |
| CN111097652B (en) * | 2019-09-25 | 2021-11-09 | 宁波水艺膜科技发展有限公司 | Multifunctional filtering membrane production process and device |
| CN110537721A (en) * | 2019-09-27 | 2019-12-06 | 四川中烟工业有限责任公司 | Reconstituted tobacco for heating cigarettes and improved dry preparation method thereof |
| CN111467981A (en) * | 2020-04-13 | 2020-07-31 | 浙江迪萧环保科技有限公司 | Preparation method of high-power interception reinforced nano-structure composite membrane |
| CN113617233A (en) * | 2020-05-09 | 2021-11-09 | 浙江迪萧环保科技有限公司 | Preparation method of novel nano-structure composite membrane |
| CN113828492A (en) * | 2020-06-24 | 2021-12-24 | 中国科学院化学研究所 | Continuous coating system and coating method |
| CN111729617B (en) * | 2020-08-06 | 2020-11-17 | 山东九章膜技术有限公司 | Jet device for interfacial polymerization reaction |
| CN111729617A (en) * | 2020-08-06 | 2020-10-02 | 山东九章膜技术有限公司 | Jet device for interfacial polymerization reaction |
| CN112452163A (en) * | 2020-09-30 | 2021-03-09 | 西安航天华阳机电装备有限公司 | Water treatment composite membrane forming interface polymerization static reaction device |
| CN112516810A (en) * | 2020-11-11 | 2021-03-19 | 南京工业大学 | Method and device for manufacturing nanofiltration membrane |
| CN112516810B (en) * | 2020-11-11 | 2022-08-16 | 南京工业大学 | Method and device for manufacturing nanofiltration membrane |
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| CN104707767B (en) | 2017-08-11 |
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Effective date of registration: 20180611 Address after: 215300 room 6, 299, Yi Shen road, Kunshan, Jiangsu. Patentee after: Kunshan Dayang Electromechanical Equipment Manufacturing Co., Ltd. Address before: 515051 Shantou, Guangdong, Jinping District Guangsha Street 9 osmanthus garden 702 rooms Patentee before: Yang Zhengxiong |
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