JPS5895517A - Solution separating device - Google Patents

Abstract

PURPOSE:To provide a device which transmits microwave oscillation energy effectively to the solns. in contact with the permeable film surfaces of superposed sheets and separates solns. effectively by holding the superposed sheets of permeable films which generate said energy when applied with high frequencies in a tight state by means of intermediate members. CONSTITUTION:Superposed sheets A consisting of dielectric porous films 1 which are hydrophobic to alcohols and are repellent to water and water permeable and conductive sheets 2 are laminated on both sides of a porous spacer 3. A part 30 of the spacer 3 is projected from the surfaces of the sheet A, A and the parts except the part 30 and the surfaces of the films 1 are coated with watertight films. A number of sheets A are contained horizontally in a case 5 and the top and bottom ends of the respective sheets A are fixed to a supporting frame 6 and a bottom surface 7, respectively. Further the midways of sheets B,- are held by respectively corresponding pressing members 8,- to keep the sheets A, A tight so that microwave oscillation energy is transmitted effectively to the alcohol solns. in contact with the film 1 surfaces of the sheets A, A whereby only the alcohol is separated with good efficiency.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a solution separation device, and is useful, for example, in separating alcohols from an aqueous alcohol solution.

When two types of mutually compatible liquids are mixed, the molecules of the two types of liquids bond with a certain bonding energy, but a hydrophobic porous membrane is used as a permeable membrane for one type of liquid (Liquid A). If sufficient energy is supplied to the membrane surface to break the molecular bonds mentioned above and the bonds can be broken, any one of the above liquids (Liquid A) can be separated through the pores of the porous membrane.

The lead inventor of this patent application is the person who provided the above idea,
For ethyl alcohol aqueous solution, use a porous fluororesin membrane with a conductive sheet on one side radicalized and a porous vinylidene fluoride membrane as a permeable membrane. , which is hydrophobic to alcohol and water-repellent to water), succeeded in separating ethyl alcohol by applying a high frequency voltage of 100 to 1000 KH2, 200 to 250 square meters to the above conductive sheet. In this case, since the porous membrane is a dielectric, it acts as an electrical capacitor against the high-frequency voltage, and the capacitor is charged, and the charging voltage reaches a constant voltage (discharge starting voltage of the porous membrane). Then, discharge occurs, and when the discharge extinction voltage is reached due to the voltage drop due to this discharge, the discharge stops and charging starts again.
It was confirmed that a 0x micro vibration wave was generated and the above molecular bonds were broken by this micro vibration wave.

The breaking of the molecular bonds is the result of the charging and discharging energy propagating through the porous membrane as a propagation path to the solution in contact with the porous membrane, and in order to improve the breaking efficiency, it is necessary to keep the porous membrane under tension. is necessary.

The present invention focuses on this point and provides a solution separation apparatus that can efficiently carry out the above solution separation method.

That is, the solution separation device according to the present invention is a device for applying a high-frequency voltage that allows water to flow through a hydrophobic dielectric porous membrane to one kind of liquid to be separated from a mixed solution of two or more kinds of liquids that are mixed with each other. This structure is characterized by comprising a permeable membrane in which conductive sheets are stacked, both ends of the stacked sheets are fixed, and the middle is pressed by a pressing member to keep the stacked sheets in a tensioned state.

The present invention will be explained below with reference to the drawings.

FIG. 1A shows a cross-sectional view of the permeable membrane superimposed sheet used in the present invention, and FIG. 1B shows a bb-b cross-sectional view in FIG. 1A. The target solution is an alcohol aqueous solution. , the separation liquid is alcohol.

In FIG. 1A and FIG. 1B, 1,1 is a dielectric porous film that is hydrophobic to alcohols and water repellent to water, such as vinylidene fluoride, polytetrafluoroethylene, Porous membranes such as polyester, polyester, vinyl chloride, etc. can be used. 2.2 is a conductive sheet through which water can pass, and is provided with slits or holes to provide water permeability.

The dielectric porous film 1 and the conductive sheet 2 are superimposed on each other, and this superimposed sheet A is superimposed on both sides of the porous spacer 3. This porous spacer 3 is used to electrically insulate between the conductive sheets 2 and 2 of the superimposed sheet A and A and to take out the separated liquid, and a part of the porous spacer 3
0 protrudes from between A and A, and the portion excluding this protruding portion and the membrane surface is covered with a watertight coating.

FIG. 2 shows an embodiment of the solution separation device according to the present invention.

5 is a case, which includes a solution supply, a supply port 51 and a discharge port 52.
It is equipped with B is the above-mentioned transparent superimposed sheet,
Several sheets are stored vertically in the case 5, and the upper and lower ends of each superimposed sheet are fixed to a support frame 6 and a lower surface 7 inside the case, respectively. Then, the porous spacer protrusions 30, 30 of each transparent superimposed sheet B, B...
... is led out from the bottom of Goo 3 in a watertight manner.

8, . . . are pressing members provided for each of the transparent superimposed sheets B, . There is.

To achieve this tension, push rod guide grooves 81 as shown in FIG. After that, it is possible to use means for moving the push rod 8 to the key 812 of the guide groove 81 and locking it in the key groove 812.

E is a high frequency power source connected to the conductive sheet 2.2 of the transparent superimposed sheet (B) via a lead wire.

In the above, the dielectric porous films 1 and 1 of the superimposed sea) A-A, . ... acts as an electrical capacitor against high-frequency voltage, and discharges when its charging voltage reaches a certain voltage, so it charges at a frequency regulated by the capacitance, specific resistance, and discharge voltage of the dielectric porous membrane. The discharge is repeated, and the charging/discharging frequency is the high frequency power supply frequency (
100 to 1000 KHz). The energy generated by repeated charging and discharging is
Since the superimposed sea) A-A, .

Thus, dielectric porous film 1.1. For example, an aqueous ethyl alcohol solution [((OHa (:+H2o
H)4)s・H20]p-qH20 is ((OH50H20H)3
)a・H2O and (IH20), ((OH5
0H20H)a) 3.H2O passes through the dielectric porous membrane and is separated. In this case, since the dielectric porous membrane is water repellent, qH20 does not permeate through the dielectric and porous membrane, and 92.7 vol. 1% ethyl alcohol can be taken out from the spacer protrusion of each superimposed sheet.

In the above-mentioned superimposed sheet A, if the conductive sheet 2 is made of the above-mentioned single-sided radicalized Teflon porous membrane, which has a capacitor function by itself, one-sided radicalized Teflon porous membrane and dielectric Since close contact with the body porous membrane is ensured, microwave vibrations during charging and discharging of the single-sided radicalized Teflon porous membrane can be efficiently propagated to the dielectric porous membrane, and the above-mentioned separation efficiency can be further increased.

Furthermore, if the non-conductive side (non-radicalized side) of the single-sided radicalized Teflon porous membrane is directed toward the porous spacer surface, a conductive material such as a wire mesh can be used as the porous spacer. By applying pressure, the diffusion and movement of ((OH50H20H)33δ·H2O), which is the separation liquid, can be promoted, and the separation efficiency can be increased from this point of view as well.

The solution separation device according to the present invention has the configuration as described above, and the superimposed sheet for a permeable membrane that generates microwave vibration energy by high-frequency electrification is held in a tensioned state by an intermediate pressing member. Energy can be effectively transferred to the solution in contact with the permeable membrane surface of the superimposed sheet,
The solution separation method described above can be carried out efficiently.

[Brief explanation of drawings]

FIG. 1A is an explanatory diagram showing the composite sheet used in the present invention, FIG. 1B is an explanatory diagram of the b-b cross section in FIG. 1A,
FIG. 2 is an explanatory diagram showing the solution separation device according to the present invention, and FIG.
The figure is an explanatory view showing the tensioned state of the composite sheet in the present invention. In the figure, 1 is a dielectric porous film, 2 is a conductive sheet, and A
8 is a superimposed sheet, and 8 is a pushing member. Agent Patent attorney Minoru Shimizu 83- 2 IfJ 3 (jJ Procedural amendment (spontaneous) 1. Indication of the case 1982 Patent Application No. 191609 2. Name of the invention Solution separation device 3. Person making the amendment Case and Relationship Patent applicant address 1-1-2 Shimohozumi, Ibaraki City, Osaka Name (39
6) Nitto Electric Industry Co., Ltd. Representative: Kamigata Sanbe 4, Agent Address: 15-11 Mondosho, Nishinomiya City, Hyogo Prefecture (17 Claims column (2) of the detailed description of the invention in the specification) 6. Contents of the amendment (1) The statement in the scope of claims column of the specification will be amended as shown in the attached sheet. (2) On page 2, line 14 to line 19 of the specification, “The capacitor...・・・・・・Due to this repeated charging and discharging," is replaced with "Due to this repeated charging and discharging,"
” and correct it. (3) On page 3, line 11 to line 18 of the specification, the statement "They are mutually configured" has been replaced with "Microwave vibrations are generated by applying a high-frequency voltage." This structure is characterized in that both ends of the transparent sheet are fixed, and the sheet is kept under tension by pressing the sheet with a pressing member. ] and correct it. (4) On page 6, lines 8 to 11 of the specification, the phrase [the charging voltage of the force/tube... Repeat the discharge,'' and correct it. 2. A solution separation device characterized in that the claimed range is pressed by a pressing member to bring the tensioned sheet into a tensioned state.

Claims (1)

[Claims] (1) A conductive sheet for applying a high-frequency voltage that can pass water is superimposed on a hydrophobic dielectric porous membrane for one type of liquid to be separated from a mixed solution of two or more liquids that are mixed with each other. A solution separation device comprising a permeable membrane that fixes both ends of a superimposed sheet and presses the middle with a pressing member to keep the superimposed sheet in a tensioned state.