CN110237720A - A kind of preparation method of open nanofiltration membrane - Google Patents
A kind of preparation method of open nanofiltration membrane Download PDFInfo
- Publication number
- CN110237720A CN110237720A CN201910645369.0A CN201910645369A CN110237720A CN 110237720 A CN110237720 A CN 110237720A CN 201910645369 A CN201910645369 A CN 201910645369A CN 110237720 A CN110237720 A CN 110237720A
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- Prior art keywords
- liquid phase
- membrane
- basement membrane
- pvdf
- open
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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
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/027—Nanofiltration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0081—After-treatment of organic or inorganic membranes
- B01D67/0088—Physical treatment with compounds, e.g. swelling, coating or impregnation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/02—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/10—Supported membranes; Membrane supports
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/30—Polyalkenyl halides
- B01D71/32—Polyalkenyl halides containing fluorine atoms
- B01D71/34—Polyvinylidene fluoride
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/56—Polyamides, e.g. polyester-amides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/24—Mechanical properties, e.g. strength
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Nanotechnology (AREA)
- Water Supply & Treatment (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a kind of preparation methods of open nanofiltration membrane, belong to open nanofiltration membrane preparation technical field.Include the following steps: S1) PVDF basement membrane is coated on serif in doughnut；S2) the PVDF basement membrane of solidification coating；S3) cleaning treatment；S4 it) is dried for the first time；S5) infiltration is handled；S6) liquid phase reactor is handled；S7 it) is dried for second；S8) finished product is collected.The beneficial effects of the present invention are: applying one layer of PVDF on serif in doughnut as basement membrane, polyamide nanofiltration film wire is then made on basement membrane, the open nanofiltration membrane into water end opening is made in several nanofiltration film wires, film wire good toughness, it is hardly damaged, long service life is easy to clean.
Description
Technical field
The present invention relates to a kind of membrane equipments of nanofiltration membrane, belong to open nanofiltration membrane preparation technical field.
Background technique
Traditional nanofiltration membrane is mostly plate membrane, is encapsulated using rolling, and such nanofiltration membrane water inlet flow channel is narrow, and water inlet end is all
Be it is enclosed, film surface pollution after is difficult to clean.
Summary of the invention
To solve defect of the existing technology, the object of the present invention is to provide a kind of good toughness, long service life, cleanings
The preparation method of convenient open nanofiltration membrane.
The technical scheme is that a kind of preparation method of open nanofiltration membrane, includes the following steps:
S1 PVDF basement membrane) is coated on serif in doughnut；
S2) the PVDF basement membrane of solidification coating；
S3) cleaning treatment；
S4 it) is dried for the first time；
S5) infiltration is handled；Specifically, impregnating 10-30 seconds in liquid phase a, the liquid phase a component includes equal three formyl of benzene
Chlorine 0-2%, paraphthaloyl chloride 0-1%, m-phthaloyl chloride 0-1%, ISOPAR-G 50-99%, n-hexane 0-50%；
S6) liquid phase reactor is handled；Specifically, normal temperature state is placed 5-20 minutes in liquid phase b, the liquid phase b group subpackage
It includes, piperazine 0-5%, m-phenylene diamine (MPD) 0-5%, water 0-99%, sodium hydroxide 0-1%, sodium phosphate 0-1%；
S7 it) is dried for second；Specifically, 50-80 DEG C heat treatment 3-20 minutes；
S8) finished product is collected.
The beneficial effects of the present invention are: one layer of PVDF is applied on serif in doughnut as basement membrane, then in basement membrane
Upper production polyamide nanofiltration film wire, several nanofiltration film wires are made the open nanofiltration membrane into water end opening, film wire good toughness, no
Easy to damage, long service life is easy to clean.
Detailed description of the invention
Fig. 1 is open nanofiltration film production line structural schematic diagram.
Appended drawing reference is as follows in figure: 1, serif thread supplying device in doughnut, 2, five roller traction device a of power, 3, guiding
Take turns a, 4, PVDF coating head, 5, coating charging pump, 6, PVDF batch can, 7, coagulating bath, 8, coagulating bath storage tank, 9, coagulating bath conveying
Pump, 10, cleaner bath a, 11, cleaner bath b, 12, nanofiltration membrane collecting wheel, 13, hollow heat drying pipe a, 14, liquid phase a infiltration apparatus,
15, liquid phase a storage bin, 16, liquid phase a delivery pump, 17, air knife a, 18, liquid phase b reaction unit, 19, air knife b, 20, liquid phase b storage
Tank, 21, liquid phase b delivery pump, 22, pressure-regulating valve a, 23, pressure gauge a, 24, pressure-regulating valve b, 25, pressure gauge b, 26, pressure
Table b, 27, hollow heat drying pipe b, 28, directive wheel b, 29, five roller traction device b of power.
Specific embodiment
1 the present invention will be further described with reference to the accompanying drawing:
A kind of preparation method of open nanofiltration membrane, includes the following steps:
S1 PVDF basement membrane) is coated on serif in doughnut；
S2) the PVDF basement membrane of solidification coating；
S3) cleaning treatment；
S4 it) is dried for the first time；
S5) infiltration is handled；Specifically, impregnating 10-30 seconds in liquid phase a, the liquid phase a component includes equal three formyl of benzene
Chlorine 0-2%, paraphthaloyl chloride 0-1%, m-phthaloyl chloride 0-1%, ISOPAR-G 50-99%, n-hexane 0-50%；
S6) liquid phase reactor is handled；Specifically, normal temperature state is placed 5-20 minutes in liquid phase b, the liquid phase b group subpackage
It includes, piperazine 0-5%, m-phenylene diamine (MPD) 0-5%, water 0-99%, sodium hydroxide 0-1%, sodium phosphate 0-1%；
S7 it) is dried for second；Specifically, 50-80 DEG C heat treatment 3-20 minutes；
S8) finished product is collected.
Above-mentioned preparation method is realized based on open nanofiltration film production line, the open nanofiltration film production line packet
It includes, successively serif thread supplying device 1, five roller traction device a2 of power, directive wheel a3 and PVDF coating in adjacent doughnut
First 4, PVDF coating head 4, coagulating bath 7, cleaner bath a10, cleaner bath b11 and hollow heat drying pipe a13 are successively adjacent, described
Hollow heat drying pipe a 13, liquid phase a infiltration apparatus 14, air knife a17, liquid phase b reaction unit 18, air knife b19 and it is hollow plus
Heated drying pipe b27 is successively adjacent, hollow heat drying pipe b27, directive wheel b28, five roller traction device b29 of power and nanofiltration membrane
Collecting wheel 12 is successively adjacent；
Pass through 20 output end of transfer pipeline a connection liquid phase b storage tank, the conveying in the middle part of the liquid phase b reaction unit 18
Pipeline a is equipped with liquid phase b delivery pump 21, and 18 both ends of liquid phase b reaction unit connect return line c, the return line c connection liquid
The recovery end of phase b storage tank 20.
PVDF batch can 6 connects the PVDF by supply lines and coats head 4, and the supply lines are equipped with coating charging pump
5。
Coagulating bath storage tank 8 connects the coagulating bath 7 with return line a by transfer pipeline b, sets on the transfer pipeline b
There is coagulating bath delivery pump 9.
The air knife a17 passes through gas pipeline a with air knife b19 respectively and connects compressed air source 26 with gas pipeline b, described
Gas pipeline a is equipped with pressure-regulating valve a22 and pressure gauge a23, and gas pipeline b is equipped with pressure-regulating valve b24 and pressure gauge
b25。
The output end of liquid phase a storage bin 15 passes through the input terminal of 14 two sides of transfer pipeline c connection liquid phase a infiltration apparatus, institute
State the output end connection return line b at 14 middle part of liquid phase a infiltration apparatus, the recycling of return line b connection liquid phase a storage bin 15
End, the transfer pipeline c are equipped with liquid phase a delivery pump 16.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvements and modifications, these improvements and modifications can also be made
Also it should be regarded as protection scope of the present invention.
Claims (1)
1. a kind of preparation method of open nanofiltration membrane, which comprises the steps of:
S1 PVDF basement membrane) is coated on serif in doughnut；
S2) the PVDF basement membrane of solidification coating；
S3) cleaning treatment；
S4 it) is dried for the first time；
S5) infiltration is handled；Specifically, impregnating 10-30 seconds in liquid phase a, the liquid phase a component includes pyromellitic trimethylsilyl chloride 0-
2%, paraphthaloyl chloride 0-1%, m-phthaloyl chloride 0-1%, ISOPAR-G50-99%, n-hexane 0-50%；
S6) liquid phase reactor is handled；Specifically, normal temperature state is placed 5-20 minutes in liquid phase b, the liquid phase b component includes piperazine
Piperazine 0-5%, m-phenylene diamine (MPD) 0-5%, water 0-99%, sodium hydroxide 0-1%, sodium phosphate 0-1%；
S7 it) is dried for second；Specifically, 50-80 DEG C heat treatment 3-20 minutes；
S8) finished product is collected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910645369.0A CN110237720A (en) | 2019-07-17 | 2019-07-17 | A kind of preparation method of open nanofiltration membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910645369.0A CN110237720A (en) | 2019-07-17 | 2019-07-17 | A kind of preparation method of open nanofiltration membrane |
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| Publication Number | Publication Date |
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| CN110237720A true CN110237720A (en) | 2019-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910645369.0A Pending CN110237720A (en) | 2019-07-17 | 2019-07-17 | A kind of preparation method of open nanofiltration membrane |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021163047A1 (en) * | 2020-02-14 | 2021-08-19 | Saudi Arabian Oil Company | Thin film composite hollow fiber membranes fabrication systems |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1864827A (en) * | 2006-04-04 | 2006-11-22 | 天津工业大学 | Hollow fiber composite membrane applicator, method for producing said hollow fiber composite membrane and product |
| CN201023029Y (en) * | 2007-04-13 | 2008-02-20 | 广州美能材料科技有限公司 | External pressure pipe type hollow fiber filtering device |
| CN106731873A (en) * | 2017-02-15 | 2017-05-31 | 北京新源国能科技集团股份有限公司 | The preparation method and device of a kind of hollow fiber composite membrane |
| CN206414992U (en) * | 2016-11-28 | 2017-08-18 | 枫科(北京)膜技术有限公司 | A kind of equipment for producing fiber nano filtering film |
| JP6522185B2 (en) * | 2018-03-07 | 2019-05-29 | 日東電工株式会社 | Composite semipermeable membrane |
-
2019
- 2019-07-17 CN CN201910645369.0A patent/CN110237720A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1864827A (en) * | 2006-04-04 | 2006-11-22 | 天津工业大学 | Hollow fiber composite membrane applicator, method for producing said hollow fiber composite membrane and product |
| CN201023029Y (en) * | 2007-04-13 | 2008-02-20 | 广州美能材料科技有限公司 | External pressure pipe type hollow fiber filtering device |
| CN206414992U (en) * | 2016-11-28 | 2017-08-18 | 枫科(北京)膜技术有限公司 | A kind of equipment for producing fiber nano filtering film |
| CN106731873A (en) * | 2017-02-15 | 2017-05-31 | 北京新源国能科技集团股份有限公司 | The preparation method and device of a kind of hollow fiber composite membrane |
| JP6522185B2 (en) * | 2018-03-07 | 2019-05-29 | 日東電工株式会社 | Composite semipermeable membrane |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021163047A1 (en) * | 2020-02-14 | 2021-08-19 | Saudi Arabian Oil Company | Thin film composite hollow fiber membranes fabrication systems |
| US11406941B2 (en) | 2020-02-14 | 2022-08-09 | Saudi Arabian Oil Company | Thin film composite hollow fiber membranes fabrication systems |
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Application publication date: 20190917 |
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