CN105251378A - Membrane distillation device - Google Patents
Membrane distillation device Download PDFInfo
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- CN105251378A CN105251378A CN201510797320.9A CN201510797320A CN105251378A CN 105251378 A CN105251378 A CN 105251378A CN 201510797320 A CN201510797320 A CN 201510797320A CN 105251378 A CN105251378 A CN 105251378A
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- membrane
- electrode
- plate electrode
- distillation device
- membrane distillation
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Abstract
The invention relates to a membrane distillation device. The membrane distillation device comprises a raw material chamber, a penetration chamber, a membrane and electrodes, wherein the membrane is a hydrophobic polyvinylidene fluoride porous membrane; the tensile strength of the membrane is 400MPa, the average pore diameter is 110nm and the porosity is 60%; the electrodes can generate an asymmetrical static electric field; the electrodes comprise a flat plate electrode and a needle-shaped electrode; the flat plate electrode is located on one side of the raw material chamber and the needle-shaped electrode is located on one side of the penetration chamber; the raw material chamber and the penetration chamber are made of polytetrafluoroethylene; the inner volume of the raw material chamber is 5 times as much as that of the penetration chamber; the flat plate electrode is made of metal copper; and the surface of the metal copper is coated with nano Pt grains with the diameter of 80-100nm. The membrane distillation device provided by the invention adopts the specific flat plate electrode, the electric field gradient is large and the membrane distillation efficiency is high; and the membrane distillation device has a simple structure, is convenient to assemble and can be used in a plurality of type of membrane distillation fields.
Description
Technical field
The present invention relates to UF membrane field, particularly relate to a kind of distillation device.
Background technology
Membrane Materials is a kind of membrane separating process for the treatment of the aqueous solution.Two primary conditions realizing Membrane Materials separation are: use and the film both sides material of hydrophobic microporous membrane exist temperature difference.For direct contact membrane distillation, by the material liquid (being called high temperature side) of the side direct contact heat of porous hydrophobic membrane, when aperture is suitable, due to capillary effect, aqueous water can not directly flow to through side (being called low temperature side) by fenestra; Again because the material of film both sides is in different temperature, water vapour pressure reduction can be produced in the both sides of film, water in the high temperature side aqueous solution forms steam at film surface vaporization, steam diffuses through fenestra under the effect of pressure reduction, steam overflowing and condensation through side at film, and the material such as nonvolatile ion, large molecule, colloid, cell can not through hydrophobic membrane because not forming steam, thus realize that solution is separated, the concentrated or object of purifying.The feature of Membrane Materials only has steam-energy by fenestra mass transfer, and film plays the effect of separating vapour-liquid fluid.The mass transfer force of Membrane Materials is the water vapour pressure reduction of film both sides, and water vapour pressure reduction is because the temperature difference of both sides causes.In the process of Membrane Materials, temperature difference is generally little, otherwise energy consumption is too high, and due to film very thin, easily occur that the temperature difference polarizes, be difficult to realize large temperature difference, therefore often utilize the cheap energy such as solar energy, underground heat, waste heat to heat feed side, because motive force is little, mass transfer rate is low, affects the popularization of Membrane Materials.
Chinese patent CN1379697A, CN1994536A, CN101104537A, CN101596406A, CN101721914A, CN101716465A etc. disclose and utilize electrostatic field in membrane separating process.CN1379697A discloses the surface charge utilizing electrostatic field to change suspended particulate, reduces biomembranous formation, improves membrane separating property; CN101104537A discloses the organic matter formed under electric field action in the oxidation Decomposition water of Strong oxdiative source; CN101721914A discloses by electric field action in membrane filtration, makes the effect such as charged organic matter or particle generation electrophoretic migration, electrocoagulation, reduces concentration polarization and fouling membrane that electrically charged organic matter or particle cause; CN101716465A, CN101596406A disclose under DC electric field effect, charged molecule or particulate are produced deviate from or through the electrophoresis motion of face, suppress at the concentration polarization of face and fouling membrane; CN1994536A discloses and utilizes electric field action in the separation process of multicomponent polysaccharide membrane, reduces concentration polarization and fouling membrane, improves separating property.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of distillation device, improve Membrane Materials through efficiency.
A kind of distillation device, comprising: feed chamber 1, through room 2, film 3 and electrode, described film is hydrophobicity polyvinylidene fluoride porous film, and the hot strength of described film is 400MPa, and average pore size is 110nm, and porosity is 60%; Described electrode can produce asymmetric electrostatic field; Described electrode is plate electrode 4 and needle electrode 5, and described plate electrode 4 is positioned at described feed chamber side, and described needle electrode 5 is positioned at through side, room; Described feed chamber 1 and be polytetrafluoroethylene (PTFE) through the material of room 2, wherein, the internal capacity of feed chamber 1 is through 5 times of the internal capacity of room 2; Described plate electrode 4 is laminated structure, and length, width, thickness are respectively 5cm, 2cm, 0.6cm, and plate electrode material 4 is metallic coppers, and copper surface is coated with the Pt nano particle particle that diameter is 80-100nm; Described needle electrode 5 material is graphite.
A kind of distillation device of the present invention, adopts specific plate electrode, and electric-force gradient is large, and Membrane Materials efficiency is high, and structure is simple, is convenient to assembling, can be used in multiple film distillation occasion.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of distillation device of the present invention;
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further described.In accompanying drawing:
1-feed chamber,
2-through room,
3-film,
4-plate electrode,
5-needle electrode.
See Fig. 1, a kind of distillation device, comprising: feed chamber 1, through room 2, film 3 and electrode, described film is hydrophobicity polyvinylidene fluoride porous film, and the hot strength of described film is 400MPa, and average pore size is 110nm, and porosity is 60%; Described electrode can produce asymmetric electrostatic field; Described electrode is plate electrode 4 and needle electrode 5, and described plate electrode 4 is positioned at described feed chamber side, and described needle electrode 5 is positioned at through side, room; Described feed chamber 1 and be polytetrafluoroethylene (PTFE) through the material of room 2, wherein, the internal capacity of feed chamber 1 is through 5 times of the internal capacity of room 2; Described plate electrode 4 is laminated structure, and length, width, thickness are respectively 5cm, 2cm, 0.6cm, and plate electrode material 4 is metallic coppers, and copper surface is coated with the Pt nano particle particle that diameter is 80-100nm; Described needle electrode 5 material is graphite.
A kind of distillation device of the present invention, adopts specific plate electrode, and electric-force gradient is large, and Membrane Materials efficiency is high, and structure is simple, is convenient to assembling, can be used in multiple film distillation occasion.
Above-described embodiment is the present invention's preferably embodiment; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (1)
1. a distillation device, comprise: feed chamber (1), through room (2), film (3) and electrode, described film is hydrophobicity polyvinylidene fluoride porous film, the hot strength of described film is 400MPa, average pore size is 110nm, and porosity is 60%; Described electrode can produce asymmetric electrostatic field; Described electrode is plate electrode (4) and needle electrode (5), and described plate electrode (4) is positioned at described feed chamber side, and described needle electrode (5) is positioned at through side, room; Described feed chamber and be polytetrafluoroethylene (PTFE) through the material of room, wherein, the internal capacity of feed chamber is through 5 times of the internal capacity of room; Described plate electrode is laminated structure, and length, width, thickness are respectively 5cm, 2cm, 0.6cm, and plate electrode material is metallic copper, and copper surface is coated with the Pt nano particle particle that diameter is 80-100nm; Described needle electrode material is graphite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510797320.9A CN105251378A (en) | 2015-11-18 | 2015-11-18 | Membrane distillation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510797320.9A CN105251378A (en) | 2015-11-18 | 2015-11-18 | Membrane distillation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105251378A true CN105251378A (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510797320.9A Pending CN105251378A (en) | 2015-11-18 | 2015-11-18 | Membrane distillation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112958284A (en) * | 2021-02-01 | 2021-06-15 | 厦门大学 | Method for separating charged particles by coupling pressure and electric field force |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH022819A (en) * | 1988-03-04 | 1990-01-08 | Matsushita Electric Works Ltd | Separation of gas with membrane |
| CN1379697A (en) * | 1999-10-12 | 2002-11-13 | M·迈克尔·皮茨 | Electrostatic enhancement equipment for membrane separation systems |
| US20070082245A1 (en) * | 2005-10-12 | 2007-04-12 | Volker Druenert | Evaporative cooling system for fuel cell systems using cathode product water |
| CN102274691A (en) * | 2011-02-10 | 2011-12-14 | 天津工业大学 | Device and method for distilling membrane |
| CN102284246A (en) * | 2011-02-10 | 2011-12-21 | 天津工业大学 | Pervaporation device and method |
-
2015
- 2015-11-18 CN CN201510797320.9A patent/CN105251378A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH022819A (en) * | 1988-03-04 | 1990-01-08 | Matsushita Electric Works Ltd | Separation of gas with membrane |
| CN1379697A (en) * | 1999-10-12 | 2002-11-13 | M·迈克尔·皮茨 | Electrostatic enhancement equipment for membrane separation systems |
| US20070082245A1 (en) * | 2005-10-12 | 2007-04-12 | Volker Druenert | Evaporative cooling system for fuel cell systems using cathode product water |
| CN102274691A (en) * | 2011-02-10 | 2011-12-14 | 天津工业大学 | Device and method for distilling membrane |
| CN102284246A (en) * | 2011-02-10 | 2011-12-21 | 天津工业大学 | Pervaporation device and method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112958284A (en) * | 2021-02-01 | 2021-06-15 | 厦门大学 | Method for separating charged particles by coupling pressure and electric field force |
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Application publication date: 20160120 |