CN103752046A - Preparation method for composite membrane pipe - Google Patents
Preparation method for composite membrane pipe Download PDFInfo
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- CN103752046A CN103752046A CN201310754080.5A CN201310754080A CN103752046A CN 103752046 A CN103752046 A CN 103752046A CN 201310754080 A CN201310754080 A CN 201310754080A CN 103752046 A CN103752046 A CN 103752046A
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- membrane pipe
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- pipe
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Abstract
The invention provides a preparation method for a composite membrane pipe, belonging to the technical field of oil-gas separation of a transformer. The preparation method for the composite membrane pipe comprises the following steps: cleanly washing a ceramic filtering membrane pipe with an ethanol liquid; pouring a polymer material liquid into the ceramic filtering membrane pipe with one temporarily sealed end, maintaining for 0.5-20min and then pouring out the polymer material liquid; and repeating for one to ten times, heating and drying the ceramic filtering membrane pipe, and desolventizing, thus obtaining the composite membrane pipe. The composite membrane pipe prepared by adopting the method adopts the ceramic filtering membrane pipe as a supporting material, the formed membrane assembly is excellent in temperature resistance and pressure resistance, and applicable to severe online degassing conditions of insulating oil of power equipment, through the pipe assembly, the oil membrane contact area can be increased, the permeation rate is high, a polymer material separation layer is a high-breathability polymer and is a composite membrane, therefore, the separation layer can be very thin; and the breathability is improved, the online monitoring analysis period can be shortened, and the production cost of the composite membrane pipe can also be lowered.
Description
Technical field
The invention belongs to transformer oil gas separation technology field, relate in particular to a kind of preparation method of the compound film tube for Oil-gas Separation.
Background technology
A lot of large scale electrical power units, as transformer, power transformation switch etc., need in its running by insulating oil, generation dissipation of heat to be gone out, simultaneously to the isolation of insulating between the each element of device interior.Transformer is one of most important equipment in converting equipment, the quality of transformer directly affects the safe operation of electrical network, hide or have the transformer of fault, insulating oil wherein can be under hot and electric effect, produce the fault gases such as H2, CO, CH4, CO2, by monitoring the concentration of ordinary dissolution of these gases in insulating oil, can prevent transformer fault, in time these fault gases be deviate from, can greatly slow down the further decomposition of dielectric.
For the degas method of Oil-gas Separation, mainly contain vacuum method, dynamic head space method etc. at present, but relatively all more complicated of its structure, cost is relatively high.And the relatively simple film osmosis of structure adopts Flat Membrane, fluororesin doughnut body membrane, doughnut and high ventilative polymer compound film mostly, degassing rate is relatively slow, can not meet the requirement of transformer Real-Time Monitoring.
Summary of the invention
For above-mentioned technical problem, the invention provides a kind of preparation method of the compound film tube for Oil-gas Separation.
For solving the problems of the technologies described above, the preparation method of compound film tube of the present invention comprises the following steps:
(1) with ethanolic solution, ceramic filter membrane pipe is cleaned up;
(2) polymer material solution is poured in the ceramic filter membrane pipe of the interim sealing in one end, kept after 0.5-20min, polymer material solution being poured out;
(3) repeating step (2) 1-10 time, then it is dry that ceramic filter membrane pipe is heated up, and deviates from solvent, thereby make compound film tube.
The compound film tube that the inventive method makes, adopts ceramic filter membrane pipe as backing material, and the membrane module heatproof, the resistance to pressure that form are good, adapt to the online degassed harsh conditions of Electric Power Equipment Insulation oil, tubular assembly, improves oil film contact area, and permeability is high, polymeric material separating layer is high ventilated polymeric, and be composite membrane, therefore separating layer thickness can be very thin, improved air penetrability, reduce the analytical cycle of on-line monitoring, also reduced compound film tube cost of manufacture.
The specific embodiment
Below the present invention is made and being further illustrated.
The preparation method of compound film tube of the present invention is: ceramic filter membrane pipe is cleaned up with ethanolic solution, polymer material solution is poured in the film pipe of the interim sealing in one end, keep 0.5-20min to pour out, apply 1-10 time, dry processing heats up, deviate from solvent, thereby make the compound film tube that Oil-gas Separation is used.
The compound film tube that the preparation method of compound film tube of the present invention makes comprises ceramic filter membrane pipe, the inner surface of described ceramic filter membrane pipe is coated with separating layer, and the polymeric material that described separating layer adopts is the compound of unformed glassy state perfluorinated resin or unformed glassy state perfluorinated resin and full hydrophobic silica nano-powder.
The compound film tube that the inventive method makes, wherein ceramic filter membrane pipe used is ultrafiltration ceramic-film tube, pore size filter is 50nm.The separating layer that ceramic filter membrane pipe applies is inner pressed, polymeric material separating layer is the compound of unformed glassy state perfluorinated resin or unformed glassy state perfluorinated resin and full hydrophobic silica nano-powder, and full hydrophobic silica nano-powder content is the 0.1-5% of unformed glassy state perfluorinated resin weight.Separating layer is selected the polymeric material that permeability is good, be suitable for coating, preferably as the TeflonAF series of Du-pont company.Wherein separating layer thickness can be controlled by the concentration of coating liquid and coating number of times, and thickness general control is at 0.1-10 μ m.
Compound film tube of the present invention is the adhesion that improves ceramic filter membrane pipe and separating layer, preferably with silane or silicon fluoride material, ceramic filter membrane tube-surface is processed, for improving oil resistivity and the gas permeability of separating layer, to separating layer, adopt high energy particle, plasma to carry out surface treatment.
The preparation method of compound film tube of the present invention, as preferably, the concentration expressed in percentage by weight of described polymer material solution is 0.1-10%, applies number of times and determines according to solution concentration.
The description of above embodiment is comparatively concrete, detailed; but can not therefore be interpreted as the restriction to this patent scope; it should be noted that; for the person of ordinary skill of the art; without departing from the inventive concept of the premise; can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (4)
1. a preparation method for compound film tube, is characterized in that comprising the following steps:
(1) with ethanolic solution, ceramic filter membrane pipe is cleaned up;
(2) polymer material solution is poured in the ceramic filter membrane pipe of the interim sealing in one end, kept after 0.5-20min, polymer material solution being poured out;
(3) repeating step (2) 1-10 time, then it is dry that ceramic filter membrane pipe is heated up, and deviates from solvent, thereby make compound film tube.
2. the preparation method of compound film tube according to claim 1, is characterized in that: described polymeric material is unformed glassy state perfluorinated resin or unformed glassy state perfluorinated resin and the compound of full hydrophobic silica nano-powder.
3. the preparation method of compound film tube according to claim 2, is characterized in that: the 0.1-5% that described full hydrophobic silica nano-powder content is unformed glassy state perfluorinated resin weight.
4. according to the preparation method of compound film tube described in claim 1,2 or 3, it is characterized in that: described polymer material solution concentration expressed in percentage by weight is 0.1-10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310754080.5A CN103752046A (en) | 2013-12-31 | 2013-12-31 | Preparation method for composite membrane pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310754080.5A CN103752046A (en) | 2013-12-31 | 2013-12-31 | Preparation method for composite membrane pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103752046A true CN103752046A (en) | 2014-04-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310754080.5A Pending CN103752046A (en) | 2013-12-31 | 2013-12-31 | Preparation method for composite membrane pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111663323A (en) * | 2019-03-08 | 2020-09-15 | 天津大学 | Clothing based on super-hydrophobic composite material |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001120960A (en) * | 1999-10-21 | 2001-05-08 | Ebara Corp | Method for assembling porous ceramic pipe membrane, assembly thereof and precision filtration device |
| EP0946233B1 (en) * | 1996-10-24 | 2005-02-23 | Compact Membrane Systems, Incorporated | Method of gasifying or degasifying a liquid |
| CN1724127A (en) * | 2005-06-16 | 2006-01-25 | 南京工业大学 | Organic-inorganic composite hydrophobic film and preparation method thereof |
| CN101239256A (en) * | 2007-11-22 | 2008-08-13 | 南京工业大学 | A ceramic composite membrane tube for oil and gas separation, its component and preparation method |
| CN102389723A (en) * | 2011-10-11 | 2012-03-28 | 常州大学 | Organic/inorganic composite membrane for use in oil gas recovery and preparation method thereof |
-
2013
- 2013-12-31 CN CN201310754080.5A patent/CN103752046A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0946233B1 (en) * | 1996-10-24 | 2005-02-23 | Compact Membrane Systems, Incorporated | Method of gasifying or degasifying a liquid |
| JP2001120960A (en) * | 1999-10-21 | 2001-05-08 | Ebara Corp | Method for assembling porous ceramic pipe membrane, assembly thereof and precision filtration device |
| CN1724127A (en) * | 2005-06-16 | 2006-01-25 | 南京工业大学 | Organic-inorganic composite hydrophobic film and preparation method thereof |
| CN101239256A (en) * | 2007-11-22 | 2008-08-13 | 南京工业大学 | A ceramic composite membrane tube for oil and gas separation, its component and preparation method |
| CN102389723A (en) * | 2011-10-11 | 2012-03-28 | 常州大学 | Organic/inorganic composite membrane for use in oil gas recovery and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111663323A (en) * | 2019-03-08 | 2020-09-15 | 天津大学 | Clothing based on super-hydrophobic composite material |
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Application publication date: 20140430 |