JPS5946118A - Method and apparatus for preparing emulsion - Google Patents

Abstract

PURPOSE:To prepare an emulsion stable over a long period of time, by a method wherein a hardly conductive dispersing liquid medium such as oil or the like and a conductive dispersing phase liquid such as water to which high voltage is applied are respectively comminuted and respective spray streams are mutually impinged. CONSTITUTION:A grounded sprayer 5 for spraying a hardly conductive dispersing liquid medium (e.g., oil) and high voltage applied sprayer 6 for injecting a dispersing phase liquid (e.g., water) are arranged around the opening of a recovery tank 2 so as to direct respective jet orifices to the vicinity of the center of the tank 2. The above mentioned dispersing liquid medium and the dispersing phase liquid are sprayed and comminuted by said sprayers 5, 6 and respective spray streams are mutually impinged above the recovery tank 2 to charge the dispersing phase fine particle in the aforementioned dispersing medium with static electricity having same polarity and, by the repelling force thereof, the dispersing phase fine particle is uniformly dispersed in the dispersing medium to obtain an emulsion which is, in turn, recovered by the recovery tank 2. By this method, the emulsion stable over a long period of time can be prepared without using an emulsifier.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for producing a so-called W/0 type emulsion in which a liquid such as water or vinegar is dispersed in a dispersion medium liquid such as oil serving as a continuous phase, and a manufacturing bag W-i. Gate.

To produce an emulsion by mixing RF substances such as oil and water that do not dissolve in each other, it is conventional to add surfactants and stabilizers to serve as emulsifiers, and place the emulsifiers at the interface between oil and water. This is achieved by significantly lowering the interfacial tension and suppressing the increase in interfacial free energy. Alternatively, in some cases, an emulsion may be temporarily formed by mechanical stirring.

For example, to make salad dressing, you need 4 axes, 1 melt,
'l'g t, by mixing vegetable oil and an aqueous solution of table vinegar using egg yolk as an emulsifier,
Or separate the liquid into 2 tll in a container,
Shake with water to temporarily emulsify and apply by stirring.

For this reason, when using the former emulsifier, other non-food products may be used in the emulsifier due to food restrictions.The use of egg yolk may limit the taste. Well, in the first place, emulsifiers (surfactants) reduce the rate of increase in interfacial energy and completely reduce the rate of increase.
The emulsified state cannot be maintained for a long period of time by using the egg yolk.

However, the latter method of stirring is effective only when achieving an emulsified state for a very short period of time, and therefore requires stirring every time it is used, which is a hassle.

As described above, conventional emulsification methods have numerous drawbacks and limitations.

By the way, in the so-called W10 type emulsion in which water etc. is dispersed in oil such as the salad dressing mentioned above, the oil serving as the dispersion medium is electrically conductive, and the water etc. serving as the dispersed phase is non-conductive. , If fine particles such as water are charged with the same (V) static electricity, the particles of each dispersed phase will repel each other, and one part of the Y ita layer will be
i! Il+, 'i, AI+, the dispersion *<r 11 mutual fusion is prevented, and the charged state is maintained insulated by the oil, so the emulsified state can continue for a long period of time. Conceivable.

The present invention is based on the above findings and aims to provide a new method and apparatus for producing an emulsion that does not necessarily require an emulsion.

An embodiment of the invention will be described with reference to the accompanying drawings.

Jf (a spherical recovery pipe with a recovery flow pipe 4 on its surface that made it possible to collect an appropriate amount of Jl with a valve 3)
2 to the support ti1 1~, and the recovery 4: □j92
The city is grounded. The recovery 41111i 2 is provided with a large number of sprayers 5 that spray oil and a large number of sprayers 6 that spray a liquid that does not fuse with aqueous oil.

The blower 5.6 may be either an airless type or a pneumatic type,
Quiet? (): A known η°l fogger used for painting etc. can be used.

In the sprayer 5, oil is pumped from a storage tank 7 through a pipe 8 by an airless pump 9, and an air-operated valve is operated.
■The opening and closing of the valve is controlled by t, and the opening valve F 1t
Therefore, the oil is made into fine particles by the pressure horn of the pump 9 and is ejected from the nozzle. The above-mentioned sentry sheath 5, storage rod 17, airless pump 9, etc. are grounded to prevent electric charges from being applied to the oil spouted out.

1) No. 11 "" Fog i++y 6 B, same L < ll
'l'fl":IH"f l Ocal')
RFF body of water 'I9 is pumped by an airless pump 12 through '1■, and the water is turned into fine particles and
put out The Rk body is a DC high voltage generator I/,
+ 13 by II Mo or negative either bar 2 K
1 of ``-'': ': is applied with 0. The storage tank %, the airless pump 12 and its pressure-feeding piping 11 are the same as the 'iii:flow il+t'II1.
．． They are each insulated to prevent this from happening.

The injection ports of the sprayers 5 and 6 are respectively collected J1. llH2 and for this purpose 'G' (
! The jet flow of oil and water that turns into i+"f and gushes out is [i'+
The two collide near the center of the 4th column 172, and mix well due to the ejection force. The bodies were collected into the recovery tank 2 while being mixed (as expected from Mizuharu), and were uniformly dispersed in the oil.

As described in 1iii, the dispersed particles of water, etc. that have been mechanically separated in the oil are transferred to the high voltage generator 13 with a 0゛1'' flow.
Due to the voltage application, positive or negative static electricity 9C is charged. For this reason, a repulsive force acts between each particle t\'f, and due to the Brownian motion of the particles, 41:1
411i combination is prevented.At this time, the oil is one conductive V1. Therefore, the dispersed phase fine particles such as water are maintained in a dispersed state for a period of time in a dispersion medium such as ura, and an emulsion is produced.

What is the separation time of the emulsion produced using the above-mentioned apparatus and the applied voltage? ( ): The relationship with pressure is shown below.

1 city, pressure "minute 1 ha N11,
' between i: 1 0 1 discharge j 10 J (V ' 24 II-,'
+ min I'll' as above with increasing voltage
When the voltage between l-2I1 becomes eroded and the voltage exceeds 30 KV,
It can be seen that the component force 1 requires ('・to・j−Z period).

In order to further extend the milling time, known emulsifiers may be used.

As clarified in the above explanation, the first σ) invention is based on a conductive dispersion medium liquid such as oil and a conductive dispersion liquid such as high J, (,, (: pressure applied) and conductive dispersion liquid such as water. and expose people
, L and collide the respective spray streams with each other to mechanically disperse the dispersed particles in the dispersion medium. Since the electrostatic charge C is charged and its repulsive force stops the agglomeration of fine particles by 1 μm to produce a stable emulsion, it is possible to produce an emulsion without using an emulsifier. ! For example, when manufacturing foods such as salad dressings, it is possible to solve problems such as taste restrictions due to the addition of emulsifiers and food contamination due to emulsifiers.
Since the equipment is 17ri 11'I, there are excellent effects such as low unit cost.

The second invention uses a dispersion medium, a dispersion device 5, and a dispersion device 5, such as those normally used in electrostatic coating, to reduce the slightest degree of dispersion.
The first invention is actually obtained by colliding the spray stream on the top of the first invention, and the device is simple and suitable for immediate production. It has excellent effects.

[Brief explanation of the drawing]

Attachment U′;/, Imj shows an embodiment of the device of the present invention 7
, Fig. 1 is a longitudinal section (111i diagram, Fig. 2 is a plane 1 sill. water) storage MH”
□”: ] 3, 'Direct/ll Portion:'+l Voltage Generating Fishing Bacteria'l'if!lfi+'i person Asahi Inu 1≦1!,!Sangyo Co., Ltd. Agent Patent Attorney Hiroshi No 11

Claims (1)

[Claims] ■ Spraying and atomizing a Te11 conductive dispersion medium liquid such as oil and one or more conductive dispersed phase liquids to which a high voltage is applied, respectively,
and the respective spray streams are made to collide with each other, the dispersed phase fine particles in the dispersion medium are charged with static electricity of the same polarity, and the dispersed phase fine particles are uniformly dispersed in the dispersion medium by the repulsive force. The i+77 emulsion is produced by arranging the emulsion near the center of the collection tank, colliding the atomized spray stream with the atomizer on the collection tank, and recovering the emulsion in the collection tank. Characteristic emulsion manufacturing equipment.