JPS5895509A - Solution separating pipe - Google Patents

Abstract

PURPOSE:To produce a soln. separating pipe which utilizes microwave oscillations easily by lap-winding tape-like dielectric porous film on a porous pipe and winding conductive ribbons open spirally on said wraps. CONSTITUTION:Tape-like dielectric porous films 2 which are hydrophobic to separating liquid and are repellent to water are lap wound on a porous pipe 1 and the lap parts 20 are sealed by joining. Thereafter, porous conductive ribbons 3 of a narrow width are wound open spirally along the laps 20 and are joined to the films 2. A high frequency power source E is connected to the ribbons 3. Then, microwave oscillations are generated in the surfaces of the films 2, by which aq. alcohol soln., etc. in contact with the outside surfaces of the films 2 are parted to alcohol and water. The alcohol permeated through the films 2 is removed through the pipe 1.

Description

[Detailed description of the invention] The present invention relates to solution separation tubes, such as Alco.

- It is useful for separating alcohols from a mixed solution of alcohols and water.

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 the two types of mutually bonded molecules can be separated by supplying enough energy to the membrane surface to break the above molecular bonds, any of the above liquids (liquid A) will become porous. Separation is possible through the pores of the membrane.

The lead inventor of this patent application is the person who provided the above idea,
Targeting ethyl alcohol aqueous solution, one side of a porous fluororesin membrane that is hydrophobic to alcohol and water repellent is made conductive by surface treatment, and the conductive layer
, ethyl alcohol was successfully separated by applying a high frequency voltage of 200 to 250 V. In this case, the porous fluororesin acts as an electrical capacitor for the conductive layer, the capacitor is charged, and when the charging voltage reaches a certain voltage (discharge starting voltage), a discharge occurs, and due to this discharge When the discharge stop voltage is reached due to voltage drop, discharging stops and charging starts again, and by repeating this charging and discharging, the charging frequency is 103 to 1
It was confirmed that a micro vibration wave of 0.05 times the strength was generated and that the above molecular bonds were broken by this micro vibration wave.

An object of the present invention is to provide an easy-to-manufacture solution separation tube for industrially implementing the solution separation method described above.

That is, in the solution separation tube according to the present invention, a tape-shaped dielectric porous membrane that is hydrophobic with respect to one kind of liquid to be separated from a mixed solution of two or more kinds of liquids mixed with each other is wrapped around the porous tube. A conductive ribbon is wound in an open spiral along the wrap, and the wrap is sealed by bonding.

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

FIG. 1A is a partially lateral longitudinal cross-sectional view of a solution separation tube according to the present invention, and FIG. 1B is a cross-sectional view taken along line bb in FIG. 1A.

In FIG. 1A and FIG. 1B, l is a perforated tube.

2 is a tape-shaped dielectric porous membrane that is hydrophobic to alcohols and water repellent to water when the solution is an alcohol aqueous solution, such as vinylidene fluoride, polytetrafluoroethylene, etc. It is made of polyester, polyethylene, vinyl chloride, etc., and is wrapped around the porous tube 1, and the wrap portion 2o is sealed by bonding.

A conductive ribbon 3 is narrower in width than the tape-shaped dielectric porous membrane 2, and is wound in an open spiral along the wrap 20. This conductive ribbon 3 is entirely or partially bonded to the tape-shaped dielectric porous membrane 2 on its back side. It is desirable to use a porous conductive ribbon 3 that is permeable to a separating liquid (alcohol), which will be described later. E is a high frequency power source connected to the conductive ribbon 3 via a lead wire.

In the above, the lap part of the dielectric porous film directly under the conductive ribbon acts as an electrical capacitor against high-frequency voltage, and when the charged battery reaches a certain voltage, it discharges (void discharge). capacitance,
Charging and discharging can be repeated at a frequency regulated by specific resistance and discharge pressure, and the charging and discharging frequency is 1 of the high frequency power supply frequency.
It becomes 0' to 105 times. Microwave vibrations are generated on the surface of the dielectric porous film by such repeated charging and discharging. This microwave vibration can be made more intense by imparting the capacitor function to the conductive ribbon.

Thus, for example, x chi/l/7/l/near -/l/aqueous solution (((OH
30H20H)a)s・Hzo)p・(lH20 is ((0,Hs O
H20H)s ]s・Hzo and (lH20),
((OH30H20H)s)s·Hzo passes through the dielectric porous membrane and is separated. In this case, since the dielectric porous membrane is water repellent, there is no permeation of lH20, and 9
2.7 vo/% of ethyl alcohol can be extracted.

FIG. 2 shows another embodiment of the present invention, in which, in contrast to the embodiments shown in FIGS. 1A and 1B, a porous spacer 4 is provided, a conductive ribbon 300 is wound thereon, and further, The tape-shaped dielectric porous membrane 200 is wound in a wrap manner so that the wrap is positioned on the conductive ribbon-L, this wrap is sealed by bonding, and the wrap and the conductive ribbon are wrapped over the entire surface as described above. It is a configuration in which the parts are joined together or partially joined together.

The porous spacer 4 is used as an insulator between the conductive ribbons 3,300, and the liquid separated by the tape-shaped dielectric porous membrane 200 (for example, if the solution is an ethyl alcohol aqueous solution, ((OH30H20H) g) g.Hzo ) can be constructed by wrapping a porous plastic tape that can pass through. Further, the winding direction of the conductive ribbons 3 and 300 is the same direction,
It may be in either the opposite direction, and the pitch may also be different.

The solution separation tubes A according to the present invention are arranged in a dispersed manner within the case 5 as shown in FIG. 3A, or collectively arranged as shown in FIG.・The space between is used as a solution chamber. Examples of solutions include mixed solutions of water and alcohols such as methyl alcohol, ethyl alcohol, and isopropyl alcohol, and mixed solutions of water and organic solvents such as acetone, dimethylformamide, and dimethyl sulfoxide.

The solution separation tube according to the present invention has the configuration as described above, and a conductive layer for causing microwave vibration of the porous permeable membrane by applying a high frequency voltage is provided by wrapping a conductive ribbon. The process of wrapping the tape-shaped dielectric porous membrane on top, the process of joining the lap part of the tape-shaped dielectric porous membrane, and the process of wrapping the conductive ribbon can be performed in tandem, so continuous production of separation tubes is possible. It also has excellent manufacturing efficiency.

[Brief explanation of the drawing]

FIG. 1A is an explanatory partial side longitudinal cross-sectional view showing a solution separation tube according to the present invention, FIG. 1B is an explanatory cross-sectional view taken along line bb in FIG. The cross-sectional explanatory drawings shown, FIG. 3A, and FIG. 3B are explanatory views showing the state in which the solution separation tube according to the present invention is worn. In the figure, 1 is a porous pipe, 2 is a tape-shaped dielectric porous membrane,
20 is a wrap portion, and 3 is a conductive ribbon. Agent Patent attorney Minoru Shimizu'flllJA γIII)B mA T3 (f!JB Procedural amendment (spontaneous) Commissioner of the Japan Patent Office Kazuo Wakasugi 1, Indication of case Patent application No. 190098 of 1982, 2, Title of invention Solution Separation Tube 3, Relationship with the Amendment Person Case Patent Applicant Address 1-1-2 Shimohozumi, Ibaraki City, Osaka Name (39
6) Nitto Electric Industry Co., Ltd. Representative: Kamigata 3rd Department 4, Agent address: 15-11 Mondosho, Nishinomiya City, Hyogo Prefecture (1) Column α for detailed explanation of the invention in the specification Contents of the amendment (1) of the specification On page 2, lines 12 to 17, the phrase ``The capacitor is charged with electric charge, and by repeating this charging and discharging'' is replaced with ``by repeating charging and discharging.'' I corrected it by saying, ``By doing so.'' (2) On page 4, lines 15 to 19 of the specification, [and the charging pressure is.......repeatedly charging and discharging,
" is corrected to "repeat charging and discharging."

Claims (2)

[Claims] (1) Wrap a tape-shaped dielectric porous membrane with binding properties onto a porous tube for one type of liquid to be separated from a mixed solution of two or more liquids that mix with each other, and 1. A solution separation tube characterized in that a conductive ribbon is wound in an open spiral, and the wrap is sealed by bonding. (2) The solution separation tube according to claim 1, wherein the conductive ribbon is porous.