CN110508151A - A kind of drying process of membrane component - Google Patents
A kind of drying process of membrane component Download PDFInfo
- Publication number
- CN110508151A CN110508151A CN201910674516.7A CN201910674516A CN110508151A CN 110508151 A CN110508151 A CN 110508151A CN 201910674516 A CN201910674516 A CN 201910674516A CN 110508151 A CN110508151 A CN 110508151A
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- drying
- membrane component
- dried
- desiccation
- moisture content
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/10—Testing of membranes or membrane apparatus; Detecting or repairing leaks
-
- 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
- B01D67/0095—Drying
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- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The present invention provides a kind of drying process of membrane component, and step A, dry film in need of test is weighed and recorded, and test is carried out to it and becomes wet film；Step B, the membrane component tested is dried；It is dried with centrigugal swing dryer, to membrane component moisture content in 20-30%, the purpose dried in this way is that desiccation medical fluid is easier to contact film surface for drying；Step C, by the membrane component after drying on machine, membrane component is carried out circulation flushing 2 hours using desiccation liquid, or membrane component is immersed in desiccation liquid 24 hours vertically；Step D, the good either soaked membrane component of above-mentioned flushing is dried；It is dried using centrigugal swing dryer, drying is to membrane component moisture content in 20-30%；Deng other multiple steps；Using drying and other treatment technique in the present invention, the wet film after capable of testing water flowing carries out the dry film that desiccation obtains, and flux performance meets market demands, realizes that the desiccation to wet film recycles.
Description
Technical field
The invention belongs to water purification filter technical field more particularly to a kind of drying process of membrane component.
Background technique
With the increasingly raising of people's living standard, household water treatment apparatus is used by more and more families, using anti-
For infiltration/nanofiltration membrane component water purifier product because of compact, the reasons such as easy for installation more and more popularize huge numbers of families.
As the periodic replacement of these water purifier reverse osmosis/nanofiltration membranes uses, reverse osmosis/nanofiltration element demand is growing, gathers around
The huge market of the person of having.
Membrane component is the core filter element of water purifier, and the quality of membrane component is related to water purifier and produces the water quality of water and right
The utilization rate of water.
After a collection of membrane component is produced, to examine the batch membrane component whether qualified, can to the batch membrane component into
The shortcomings that row sampling observation (water flowing test) tests membrane component by dry film and is changed into wet film, wet film is that not easy to maintain (holding time only has
The part of dry film), it is easy mouldy, is then not suitable for using after mouldy, and dries or directly dry in air if put
It will cause membrane component if dry and lose flux (not producing water).And market is big to dry film demand, so by taking a sample test
The problems such as wet film will continue to accumulate afterwards, will cause occupancy warehouse location, mouldy to scrap, and cross the decline of shelf-life performance.
Summary of the invention
The purpose of the present invention is to provide a kind of drying process of membrane component, to solve mentioned above in the background art ask
Topic.
To achieve the above object, it the invention provides the following technical scheme: a kind of drying process of membrane component, including walks as follows
It is rapid:
Step A, dry film in need of test is weighed and is recorded, test is carried out to it and becomes wet film；
Step B, the membrane component tested is dried；It is dried, is dried aqueous to membrane component with centrigugal swing dryer
For rate in 20-30%, the purpose dried in this way is that desiccation medical fluid is easier to contact film surface；
Step C, by the membrane component after drying on machine, membrane component is carried out circulation flushing 2 hours using desiccation liquid,
Or membrane component is immersed in vertically in desiccation liquid 24 hours；Wherein, the liquid volume of (1) circulation flushing, can be machine just
Often operating, the liquid volume that (2) are impregnated need to submerge the vertical upper surface for placing membrane component；
Step D, the good either soaked membrane component of above-mentioned flushing is dried；It is got rid of using centrigugal swing dryer
Dry, to membrane component moisture content in 20-30%, the purpose dried in this way is the moisture inside quick separating membrane component for drying, is saved
The time of drying, and weigh, the weight after record drying calculates the moisture content of membrane component；
Step E, membrane component to be dried, 40 DEG C of drying temperature, drying time is controlled by the moisture content of membrane component,
Water content requirement 8%-12% after membrane component drying；
Moisture content %=(the weight * 100% after weight g- dry film weight g)/drying after drying；
Wherein, step D process major significance is tentatively be determined a general time according to the moisture content after drying, side
Just it operates, because the water yield after every film drying is all different.
Step F, according to following 3 formula, the performance of the membrane component after calculating desiccation, it is desirable that: attenuation rate is no more than
30%, salt rejection rate decline is no more than 2%；Only reach this standard, wet film element is subjected to drying just significant, otherwise membrane element
Part reduced performance is relatively more, and membrane component will lose use value.
Attenuation rate (%)=(flux after flux-drying before drying)/flux * 100% before drying；
Salt rejection rate * 100% before salt rejection rate growth rate (%)=(salt rejection rate before salt rejection rate-drying after drying)/drying；
Salt rejection rate (%)=(1- pure water conductance/water inlet conductance) * 100%.
Preferably, the formula of the desiccation liquid in the step C be+20% alcohol of+5% sodium lactate of 5% glycerol+remaining
Pure water is according to weight.Wherein, pure water be exactly the water electric conductivity value that is filtered out by reverse-osmosis membrane element it is general≤
10 μ s/cm, such water do not have magazine and bacterium etc.；This formula is by many experiments, and only these types of solution is pressed at present
The wet film element that can be tested according to the mixing of this ratio keeps certain performance, and other medical fluids do not have this work temporarily
With.
Compared with prior art, the beneficial effects of the present invention are:
Using drying and other treatment technique in the present invention, the wet film after capable of testing water flowing carries out the dry film that desiccation obtains,
Flux performance meets market demands, realizes that the desiccation to wet film recycles.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
The present invention provides a kind of technical solution: a kind of drying process of membrane component includes the following steps:
Step A, dry film in need of test is weighed and is recorded, test is carried out to it and becomes wet film；
Step B, the membrane component tested is dried；It is dried, is dried aqueous to membrane component with centrigugal swing dryer
For rate in 20-30%, the purpose dried in this way is that desiccation medical fluid is easier to contact film surface；
Step C, by the membrane component after drying on machine, membrane component is carried out circulation flushing 2 hours using desiccation liquid,
Or membrane component is immersed in vertically in desiccation liquid 24 hours；Wherein, the liquid volume of (1) circulation flushing, can be machine just
Often operating, the liquid volume that (2) are impregnated need to submerge the vertical upper surface for placing membrane component；
Step D, the good either soaked membrane component of above-mentioned flushing is dried；It is got rid of using centrigugal swing dryer
Dry, to membrane component moisture content in 20-30%, the purpose dried in this way is the moisture inside quick separating membrane component for drying, is saved
The time of drying, and weigh, the weight after record drying calculates the moisture content of membrane component；
Step E, membrane component to be dried, 40 DEG C of drying temperature, drying time is controlled by the moisture content of membrane component,
Water content requirement 8%-12% after membrane component drying；
Moisture content %=(the weight * 100% after weight g- dry film weight g)/drying after drying；
Wherein, step D process major significance is tentatively be determined a general time according to the moisture content after drying, side
Just it operates, because the water yield after every film drying is all different.
Step F, according to following 3 formula, the performance of the membrane component after calculating desiccation, it is desirable that: attenuation rate is no more than
30%, salt rejection rate decline is no more than 2%；Only reach this standard, wet film element is subjected to drying just significant, otherwise membrane element
Part reduced performance is relatively more, and membrane component will lose use value.
Attenuation rate (%)=(flux after flux-drying before drying)/flux * 100% before drying；
Salt rejection rate * 100% before salt rejection rate growth rate (%)=(salt rejection rate before salt rejection rate-drying after drying)/drying；
Salt rejection rate (%)=(1- pure water conductance/water inlet conductance) * 100%.
Preferably, the formula of the desiccation liquid in the step C be+20% alcohol of+5% sodium lactate of 5% glycerol+remaining
Pure water is according to weight.Wherein, pure water be exactly the water electric conductivity value that is filtered out by reverse-osmosis membrane element it is general≤
10 μ s/cm, such water do not have magazine and bacterium etc.；This formula is by many experiments, and only these types of solution is pressed at present
The wet film element that can be tested according to the mixing of this ratio keeps certain performance, and other medical fluids do not have this work temporarily
With.
Using drying and other treatment technique in the present invention, the wet film after capable of testing water flowing carries out the dry film that desiccation obtains,
Flux performance meets market demands, realizes that the desiccation to wet film recycles.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (2)
1. a kind of drying process of membrane component, which comprises the steps of:
Step A, dry film in need of test is weighed and is recorded, test is carried out to it and becomes wet film；
Step B, the membrane component tested is dried；It is dried with centrigugal swing dryer, drying to membrane component moisture content exists
20-30%, the purpose dried in this way are that desiccation medical fluid is easier to contact film surface；
Step C, by the membrane component after drying on machine, membrane component is carried out circulation flushing 2 hours using desiccation liquid, or
Membrane component is immersed in vertically in desiccation liquid 24 hours；
Step D, the good either soaked membrane component of above-mentioned flushing is dried；It is dried using centrigugal swing dryer,
To membrane component moisture content in 20-30%, the purpose dried in this way is the moisture inside quick separating membrane component for drying, saves drying
Time, and weigh, the weight after record drying calculates the moisture content of membrane component；
Step E, membrane component is dried, 40 DEG C of drying temperature, drying time is controlled by the moisture content of membrane component, membrane element
Water content requirement 8%-12% after part drying；
Moisture content %=(the weight * 100% after weight g- dry film weight g)/drying after drying；
Step F, according to following 3 formula, the performance of the membrane component after calculating desiccation, it is desirable that: attenuation rate is no more than 30%,
Salt rejection rate decline is no more than 2%；
Attenuation rate (%)=(flux after flux-drying before drying)/flux * 100% before drying；
Salt rejection rate * 100% before salt rejection rate growth rate (%)=(salt rejection rate before salt rejection rate-drying after drying)/drying；
Salt rejection rate (%)=(1- pure water conductance/water inlet conductance) * 100%.
2. a kind of drying process of membrane component according to claim 1, which is characterized in that the desiccation in the step C
The formula of liquid is+20% alcohol of+5% sodium lactate of 5% glycerol+remaining pure water, is according to weight.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910674516.7A CN110508151A (en) | 2019-07-25 | 2019-07-25 | A kind of drying process of membrane component |
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| CN201910674516.7A CN110508151A (en) | 2019-07-25 | 2019-07-25 | A kind of drying process of membrane component |
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| CN110508151A true CN110508151A (en) | 2019-11-29 |
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Citations (9)
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|---|---|---|---|---|
| US5968358A (en) * | 1996-12-10 | 1999-10-19 | Nissho Corporation | Method for washing hollow fiber membrane |
| CN102698618A (en) * | 2012-04-16 | 2012-10-03 | 中国科学院过程工程研究所 | Polyether sulfone porous membrane for membrane distillation process and preparation method thereof |
| CN102964616A (en) * | 2012-11-21 | 2013-03-13 | 江苏凯米膜科技股份有限公司 | Preparation method of strong-acid-resistant strong-base-resistant polyether sulfone tubular ultrafiltration dry membrane |
| CN102961971A (en) * | 2012-11-21 | 2013-03-13 | 上海斯纳普膜分离科技有限公司 | Automatic anhydration processing system and method of MBR (Meane Biological Reactor) flat sheet filter membrane |
| CN103463982A (en) * | 2013-10-12 | 2013-12-25 | 深圳市诚德来实业有限公司 | Preservation method of ultrafiltration membrane |
| CN103657430A (en) * | 2014-01-02 | 2014-03-26 | 北京碧水源膜科技有限公司 | Method for online preparing high-throughput composite reverse osmosis membrane |
| CN104524980A (en) * | 2014-11-28 | 2015-04-22 | 北京碧水源膜科技有限公司 | Membrane element post-treatment system and method |
| CN106178991A (en) * | 2016-08-30 | 2016-12-07 | 宁波清水坊环保科技有限公司 | Anti-pollution antibacterial type PVDF ultrafiltration membrane and preparation method thereof |
| CN206355845U (en) * | 2017-01-07 | 2017-07-28 | 深圳市汇滨净水科技有限公司 | A kind of immersion dehydration device after RO films water flowing test |
-
2019
- 2019-07-25 CN CN201910674516.7A patent/CN110508151A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5968358A (en) * | 1996-12-10 | 1999-10-19 | Nissho Corporation | Method for washing hollow fiber membrane |
| CN102698618A (en) * | 2012-04-16 | 2012-10-03 | 中国科学院过程工程研究所 | Polyether sulfone porous membrane for membrane distillation process and preparation method thereof |
| CN102964616A (en) * | 2012-11-21 | 2013-03-13 | 江苏凯米膜科技股份有限公司 | Preparation method of strong-acid-resistant strong-base-resistant polyether sulfone tubular ultrafiltration dry membrane |
| CN102961971A (en) * | 2012-11-21 | 2013-03-13 | 上海斯纳普膜分离科技有限公司 | Automatic anhydration processing system and method of MBR (Meane Biological Reactor) flat sheet filter membrane |
| CN103463982A (en) * | 2013-10-12 | 2013-12-25 | 深圳市诚德来实业有限公司 | Preservation method of ultrafiltration membrane |
| CN103657430A (en) * | 2014-01-02 | 2014-03-26 | 北京碧水源膜科技有限公司 | Method for online preparing high-throughput composite reverse osmosis membrane |
| CN104524980A (en) * | 2014-11-28 | 2015-04-22 | 北京碧水源膜科技有限公司 | Membrane element post-treatment system and method |
| CN106178991A (en) * | 2016-08-30 | 2016-12-07 | 宁波清水坊环保科技有限公司 | Anti-pollution antibacterial type PVDF ultrafiltration membrane and preparation method thereof |
| CN206355845U (en) * | 2017-01-07 | 2017-07-28 | 深圳市汇滨净水科技有限公司 | A kind of immersion dehydration device after RO films water flowing test |
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Application publication date: 20191129 |