CN101537313A - Cleaning method of hollow-fiber membrane - Google Patents
Cleaning method of hollow-fiber membrane Download PDFInfo
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- CN101537313A CN101537313A CN200910119345A CN200910119345A CN101537313A CN 101537313 A CN101537313 A CN 101537313A CN 200910119345 A CN200910119345 A CN 200910119345A CN 200910119345 A CN200910119345 A CN 200910119345A CN 101537313 A CN101537313 A CN 101537313A
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- fibre membrane
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Abstract
The invention relates to a method for cleaning a hollow-fiber membrane, in particular to a method for cleaning a hollow-fiber membrane used for hemodialysis. The method is characterized in that vacuum draw is adopted to lead cleaning liquid into the inner cavity of the hollow-fiber membrane; then centrifugal action is utilized for flinging the cleaning liquid with solvent and impurities dissolved in to be clean; vacuum draw is again conducted; and the liquid is again flung to be clean. The operation is repeated until the residual solvent and other impurities contained in the hollow-fiber membrane are completely cleaned.
Description
Technical field:
The present invention relates to the manufacturing field of hollow fiber separating film.Concrete a kind of employing vacuumizes and drying combines, the method that hollow-fibre membrane especially haemodialysis is cleaned with hollow-fibre membrane.
Background technology:
In the process of doing the wet production hollow-fibre membrane, need to use all kinds of solvents and additive, after forming hollow-fibre membrane, then need to remove wherein remaining solvent and other materials that must remove, especially harmful solvent must clean up in the inner chamber, the most frequently used method is to use a large amount of ultrafiltration water or reverse osmosis water constantly hollow-fibre membrane to be carried out long soaking flushing at present, hollow-fibre membrane especially for haemodialysis, because its internal diameter is very little, only be 200 μ, it is very difficult that cleaning agent enters its hollow cavity, though still be difficult to clean up through soaking for a long time and washing solvent in its inner chamber etc., often still have remaining harmful substances such as solvent through the continuous flushing more than 48 hours, so scavenging period is long, the cleaning agent consumption is big, the expense height, process is difficult to control, and equipment is huge, and it is big to take plant area, has increased construction and production cost.The cleaning method (the 2nd page of the 7th～8 row of claims) of " embathe (8) " statement has just been represented the cleaning way that generally adopts at present among the CN1380130 " preparation method of doughnut supermicro filtration membrane ", can not adapt to batch production requirement.
Summary of the invention:
The technical problem to be solved in the present invention provides that a kind of employing vacuumizes and drying combines, the method that hollow-fibre membrane especially haemodialysis is cleaned with hollow-fibre membrane.This method is simple, simple to operate, not only can be thoroughly solvent of hollow-fibre membrane inner chamber etc. be cleaned up, and relatively use a large amount of ultrafiltration water or reverse osmosis water constantly to carry out the method for long soaking flushing, can shorten scavenging period, tens of times of ground reduce water consumption, and the shared plant area of minimizing equipment, reduce and build and production cost.So can reduce the cleaning cost of doughnut significantly, be applicable to the batch process of hollow-fibre membrane.
The present invention relates to method that hollow-fibre membrane especially haemodialysis is cleaned with hollow-fibre membrane.The invention is characterized in and adopt vacuum draw to make cleaning fluid enter the hollow-fibre membrane inner chamber, the cleaning fluid that will dissolve in solvent and impurity with centrifugal action gets rid of only again, vacuum draw gets rid of only more again, and repeatable operation is till the contained residual solvent of hollow-fibre membrane and other impurity clean up fully.Concrete grammar is as follows:
1) hollow fiber membrane bundle of will be just producing from dry wet spinning machine that has impurity such as remaining solvent dries with centrifugal process, removes materials such as moisture in the hollow-fibre membrane inner chamber, solvent as far as possible;
2) inject cleaning agent, use vacuum draw, and soaked several minutes, cleaning agent is fully entered between hollow-fibre membrane inner chamber and the fibre bundle, contained solvent is dissolved in the cleaning agent in the inner chamber thereby make in the hollow-fibre membrane especially;
3) dry once more with centrifugal process, the cleaning agent that has impurity such as solvent is thrown away from the hollow-fibre membrane inner chamber;
4) repeat 2) 3) for several times, till the content that throws away impurity in the cleaning agent with Abbe refractometer mensuration is zero.
General repeatable operation 3～4 times only needs about 1 hour time, impurity wherein can be cleaned up, the concrete operations step will
Concrete real Execute modeIn do further statement.
Description of drawings
Accompanying drawing is the side-looking generalized section for explanation specific embodiment of the invention device therefor.
Wherein 1 for placing the container of hollow fiber membrane bundle;
2 for placing the pallet of container 1;
3 is the container of splendid attire cleaning agent, adopts mechanical seal between rotating shaft 6 and its;
4 be with rotating shaft 6 that pallet 2 is connected on belt pulley;
5 is the belt pulley on the motor, and is connected with V belt between the belt pulley 4;
6 is rotating shaft;
7 for emitting pipeline and the valve that throws away liquid;
8 for vacuumizing the pipeline and the valve of usefulness;
9 for injecting pipeline and the valve that cleaning agent is used;
10 is blowdown piping and valve;
11 is form.
The specific embodiment
Further set forth the present invention below in conjunction with specific embodiment.
The present invention relates to method that hollow-fibre membrane especially haemodialysis is cleaned with hollow-fibre membrane.The invention is characterized in and adopt vacuum draw to make cleaning fluid enter the hollow-fibre membrane inner chamber, the cleaning fluid that will dissolve in solvent and impurity with centrifugal action gets rid of only again, vacuum draw gets rid of only more again, and repeatable operation is till the contained residual solvent of hollow-fibre membrane and other impurity clean up fully.The cleaning agent that adopts in the present embodiment is a reverse osmosis water.
(1) hollow fiber membrane bundle of will be just producing from dry wet spinning machine that has impurity such as remaining solvent is put into container 1;
(2) start motor, belt pulley 5 rotation at a high speed, and by V belt drive belt pulley 4, make rotating shaft 6 begin rotation, drive pallet 2 and container 1 rotation fixed thereon, hollow fiber membrane bundle in the container 1 is and then rotation also, and centrifugal force makes in the hollow fiber membrane bundle inner chamber and materials such as moisture between the hollow-fibre membrane and solvent throw away;
(3) after observation pipeline 7 has not thrown away the liquid outflow, valve-off, and close motor;
(4) open valve on the pipeline 9, in container 3, inject cleaning agent, make its liquid level surpass the height of hollow-fibre membrane in the container 1, hollow-fibre membrane is fully immersed in the cleaning agent:
(5) blind off a line valve on 9, open the valve on the pipeline 8, begin to vacuumize, at this moment can see significantly between hollow-fibre membrane inner chamber and the hollow-fibre membrane from form 11 and discharge a large amount of gases, and hollow fiber membrane bundle begins to sink, illustrate cleaning agent entered the hollow-fibre membrane inner chamber and between the space, the valve on 9 of at this moment blinding off a line;
(6) hollow fiber membrane bundle soaked in cleaning agent 10 minutes, so that contained solvent etc. is dissolved in the cleaning agent as much as possible in the hollow-fibre membrane, then, opened the valve venting on the pipeline 10, and opened the valve on the pipeline 7, and cleaning agent is flowed out naturally;
(7) treat that cleaning agent has flowed substantially in the pipeline 7 after, open motor, repeat the step of (2)～(6), 3 times repeatedly;
(8) with the solvent of trickle in the Abbe refractometer signal piping 7, wherein do not contained solvent as can be seen fully.So far, the epicycle cleaning operation finishes, and can place the next group hollow-fibre membrane and proceed to clean.
In this specification, the present invention is described with reference to its certain embodiments.But, still can make various modifications and conversion obviously and not deviate from the spirit and scope of the present invention.Therefore, specification and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (5)
1. an employing vacuumizes and drying combines, the method that hollow-fibre membrane especially haemodialysis is cleaned with hollow-fibre membrane.
2. according to the described method that hollow-fibre membrane especially haemodialysis is cleaned with hollow-fibre membrane of claim 1, it is characterized in that the hollow fiber membrane bundle that has impurity such as remaining solvent that described method will be just produced from dry wet spinning machine dries with centrifugal process, remove materials such as moisture in the hollow-fibre membrane inner chamber, solvent as far as possible.
3. according to the described method that hollow-fibre membrane especially haemodialysis is cleaned with hollow-fibre membrane of claim 1, it is characterized in that using vacuum draw after described method is injected cleaning agent, and soaked several minutes, cleaning agent is fully entered between hollow-fibre membrane inner chamber and the fibre bundle, and contained solvent is dissolved in the cleaning agent in the inner chamber thereby make in the hollow-fibre membrane especially.
According to claim 1 described to hollow-fibre membrane especially haemodialysis with the method that hollow-fibre membrane cleans, it is characterized in that described method dries once more with centrifugal process, the cleaning agent that has impurity such as solvent is thrown away from the hollow-fibre membrane inner chamber.
5. according to the described method that hollow-fibre membrane especially haemodialysis is cleaned with hollow-fibre membrane of claim 1, it is characterized in that described method repeats the step several of aforesaid right requirement 3 and 4, till the content that throws away impurity in the cleaning agent with Abbe refractometer mensuration is zero.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910119345A CN101537313A (en) | 2009-03-25 | 2009-03-25 | Cleaning method of hollow-fiber membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910119345A CN101537313A (en) | 2009-03-25 | 2009-03-25 | Cleaning method of hollow-fiber membrane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101537313A true CN101537313A (en) | 2009-09-23 |
Family
ID=41120836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910119345A Pending CN101537313A (en) | 2009-03-25 | 2009-03-25 | Cleaning method of hollow-fiber membrane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101537313A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108854268A (en) * | 2018-06-11 | 2018-11-23 | 国科世纪激光技术（天津）有限公司 | Waterproof ventilated membrane cleaning device and cleaning method |
| CN109987777A (en) * | 2017-12-29 | 2019-07-09 | 福建金源泉科技发展有限公司 | A kind of novel backwashing hydrogen-rich energy conservation water dispenser |
| CN112717704A (en) * | 2021-01-14 | 2021-04-30 | 广州恒河环保设计研究院股份有限公司 | Can high-efficient unpowered ceramic membrane purifier |
-
2009
- 2009-03-25 CN CN200910119345A patent/CN101537313A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109987777A (en) * | 2017-12-29 | 2019-07-09 | 福建金源泉科技发展有限公司 | A kind of novel backwashing hydrogen-rich energy conservation water dispenser |
| CN108854268A (en) * | 2018-06-11 | 2018-11-23 | 国科世纪激光技术（天津）有限公司 | Waterproof ventilated membrane cleaning device and cleaning method |
| CN112717704A (en) * | 2021-01-14 | 2021-04-30 | 广州恒河环保设计研究院股份有限公司 | Can high-efficient unpowered ceramic membrane purifier |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20090923 |