WO2006109741A1

WO2006109741A1 - Mixed flow generating device and fixed flow generating method

Info

Publication number: WO2006109741A1
Application number: PCT/JP2006/307487
Authority: WO
Inventors: Koichi Suzumori; Takefumi Kanda; Akinori Muto; Yusaku Sakata
Original assignee: National University Corporation Okayama University
Priority date: 2005-04-08
Filing date: 2006-04-07
Publication date: 2006-10-19
Also published as: JP5176103B2; JPWO2006109741A1

Abstract

There is provided a mixed flow generating device capable of rotating a rotor without providing a drive shaft. The mixed flow generating device for mixing two or more liquid and generating a mixed flow includes: a pipe (P) having liquid inlets (IN1, IN2) at the upstream side and a liquid outlet (OUT1)at the downstream side; magnetic field generation means (C) arranged around the external circumference of the pipe (P) and generating a rotary magnetic field having a center at the center axis (L0) of the pipe (P); and columnar rotor (R) contained in the pipe (P) and rotated around the center axis (L0) by generation of the rotary magnetic field.

Description

Specification

Mixed flow generator and mixed flow generation method

Technical field

TECHNICAL FIELD [0001] The present invention relates to a mixed flow generator for mixing two or more liquids to generate a mixed flow, and a mixed flow generation method using the mixed flow generator.

Background art

Conventionally, various mixed flow generators have been proposed. For example, Patent Document 1 houses a rotor inside a pipe into which a plurality of types of liquids are introduced, and rotationally drives the rotor. Thus, there is described a chemical reaction apparatus for mixing a liquid flowing in a gap between an inner peripheral surface of the pipe and an outer peripheral surface of the rotor. In this apparatus, the rotor is connected to a motor provided outside the pipe via a drive shaft, and the rotor is rotationally driven by driving the motor.

[0003] However, in the apparatus of Patent Document 1, it is necessary to provide a through hole for pivotally supporting the drive shaft in a pipe or a lid attached to the pipe, and in the gap between the drive shaft and the through hole, It was necessary to provide some kind of seal to prevent liquid from leaking outside the pipe. However, if the seal is highly liquid-tight, the frictional force acting on the drive shaft will increase and the rotor will not rotate smoothly, and there will be new problems such as seal wear and heat generation. There was also a risk of it occurring. In addition, the device of Patent Document 1 is difficult to reduce in size because the presence of a drive shaft and a seal is an obstacle.

[0004] With the recent progress of MEMS (Micro Electro Mechanical System), miniaturization of devices has been actively carried out in the fields of chemical engineering and biotechnology, and the dimensions of the reaction field have become very small. A chemical reactor called a microreactor has been attracting attention. Microreactors are not only capable of saving space and reducing the burden on the environment, but also for the performance of chemical reactors, as described below. It is expected to be put to practical use in the synthetic reaction test and development of new chemical processes. [0005] That is, the microreactor (1) can reduce the time required for mixing and extraction due to the small size of the reaction field, and (2) the ratio of the surface area to the volume of liquid flowing in the reaction field. Therefore, the reaction and molecular movement at the interface between liquid and liquid can be performed efficiently, and (3) the heat capacity of the liquid flowing through the reaction field is small and heat exchange is performed quickly. It also has the advantage that easy temperature control can be performed.

[0006] However, when the reaction field is reduced in size, the flow phenomenon different from the conventional macro scale reaction appears. For example, since the Reynolds number of the liquid flowing through the reaction field decreases, the laminar flow becomes dominant, and the ratio of the surface area to the volume of the liquid flowing through the reaction field increases, so the influence of surface tension is affected. For example, it will grow. In this way, if the reaction field size is reduced, a phenomenon that is significantly different from the generation of turbulent flow due to mechanical stirring at a macro scale will appear. Therefore, it is important to control it well. come.

[0007] In a microreactor, many methods for adjusting the flow state of a liquid flowing in a reaction field have been proposed, and two kinds of liquids that are incompatible with each other are simultaneously flowed into a flow path that is a reaction field. Some of them generate parallel two-phase flow in the flow path, and others generate two flows that are not compatible with each other alternately in the flow path that is the reaction field to generate alternate flow in the flow path ( (See Non-Patent Document 1.) o In particular, the method of generating an alternating flow has the advantage that the extraction rate can be increased compared to the method of generating a parallel two-phase flow. It has been confirmed even when the flow pitch is much longer than the channel diameter.

[0008] This is surprising when considering the distance of molecular movement to the contacting interface. In the alternating flow in a fine channel where laminar flow with a small Reynolds number is dominant, It is considered that an advantageous special flow state is developed. For example, if a circulation flow is generated in each phase, the same effect as stirring is obtained, and as a result, the thickness of the boundary membrane at the interface decreases and the molecular transfer rate at the interface increases. Can be estimated.

[0009] Further, Patent Document 2 is an apparatus for stirring and mixing two or more substances introduced into a container, wherein the container is formed of a nonmagnetic material, and a magnetic body is attached to a stirrer disposed inside the container. Shi In this publication, a wire for generating a rotating magnetic field is disposed outside the container. In this device, the stirrer housed in the container is rotated by a rotating magnetic field generated from the shoreline, and the substance to be stirred and mixed is supplied with the inlet force provided on the lower surface of the container. It is like that. Patent Document 2 discloses that the stirrer is rotated with the tip provided at the center of the lower surface of the stirrer (in the center of the upstream end) in contact with the lower inner wall surface of the container. It is described.

[0010] The apparatus of Patent Document 2 has a structure in which the stirrer is supported by its own weight, although the stirrer is rotated by a rotating magnetic field and does not have the disadvantages found in the apparatus of Patent Document 1. It was. For this reason, if the stirrer is lightened, the tip of the stirrer may rise due to the material supplied from the lower side of the container, and the inner wall surface force on the lower side of the container may rise, and the central axis of the stirrer may be shaken. The stirrer was not able to rotate stably. Therefore, it has been difficult to reduce the size of the apparatus by making the stirring bar light and small in size.

[0011] Patent Document 1: US Patent Application Publication No. 2004Z0013587

Patent Document 2: Japanese Patent Laid-Open No. 03-181324

Non-Patent Document 1: Yasuo Sonoda and three others, "Control of the flow state in the three-dimensional microreactor and the effect of the flow state on the reaction rate", Proceedings of the 70th Annual Meeting of the Chemical Engineering Society (CD-ROM), Heisei February 2017, lecture number J215

Disclosure of the invention

Problems to be solved by the invention

The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a mixed flow generator that can rotate a mouth without providing a drive shaft. It is another object of the present invention to provide a mixed flow generator that has a simple structure, is suitable for miniaturization, and can be suitably used as a chemical reaction apparatus. Furthermore, it is an object of the present invention to provide a method for generating a mixed flow that is preferably performed using these mixed flow generators. Means for solving the problem

[0013] The above-mentioned problem is a mixed flow generation device for mixing two or more liquids to generate a mixed flow, [1] having a plurality of liquid inlets on the upstream side and on the downstream side Has liquid outlet Knoop P, [2] Rotating around the central axis L of the pipe P, arranged on the outer periphery of the pipe P

0

A magnetic field generating means C for generating a magnetic field, and [3] a circle that is accommodated in the pipe P, has a downstream end tapered, and rotates about the central axis L by the generation of the rotating magnetic field.

0

A mixed flow generator comprising a columnar rotor R and [4] a pivot bearing B arranged between a liquid inlet and a liquid outlet and supporting the downstream end of the rotor R is provided. It is solved by doing.

[0014] This not only makes it possible to rotate the rotor R without providing a drive shaft, but also reduces the frictional force acting on the rotor R and the liquid flowing around the rotor R. The center axis of the rotor R can be automatically aligned with the center axis L of the pipe P with high accuracy.

0

(Automatic alignment effect).

[0015] Here, the "mixed flow" refers to a flow in which each liquid is not evenly mixed but has an interface in addition to a flow in which each liquid is uniformly mixed. It is also a concept that includes Among these, the mixed flow generator of the present invention is suitable for adjusting the flow under laminar flow control. Examples of the flow under the laminar flow include an alternating flow in which the interface between the liquids repeatedly appears in the flow direction, and a spiral flow in which the interface between the liquids appears in a spiral shape.

[0016] "Rotating magnetic field" may mean a magnetic field that rotates around a certain axis while maintaining a constant strength at a constant rotational speed, but is not limited to this. The concept also includes a magnetic field that rotates with varying strength.

[0017] In the mixed flow generating device described above, it is preferable that a through hole for allowing a liquid introduced into the liquid introduction rocker pipe P to pass therethrough is provided in the pivot bearing B. As a result, it is speculated that the liquid flowing inside the pipe P can be cut at the periphery of each through-hole H, and the mixed flow flowing in the flow path connected to the downstream side of the liquid delivery port can be made to be an alternating flow. Is done.

[0018] The liquid supplied to the plurality of liquid inlets varies depending on the type of the mixed flow generated by the mixed flow generating device and is not particularly limited. It is preferable. In such a case, the situation of the interface formed between the respective liquids can be adjusted in the flow path, and the significance of employing the microreactor of the present invention is also increased. [0019] The direction of Neuve P is not particularly limited, but its central axis L is parallel to the vertical direction.

0

It is preferable that they are arranged in such a manner. As a result, the eccentricity of the rotor R due to gravity can be prevented, and the central axis of the rotor R can be aligned with the central axis L of the pipe P with high accuracy. this

0

In this case, it is preferable to arrange the Neuve P so that the side on which the liquid inlet is provided is vertically upward.

[0020] The inner radius r of the pipe P and the outer radius r of the rotor R depend on the liquid introduced from the liquid inlet and

1 2

It varies depending on the type of mixed flow to be generated and is not particularly limited. However, when a mixed flow generating device generates a mixed flow controlled by a laminar flow, the difference between the inner radius r and the outer radius!

1 2

Set to m or less.

[0021] A flow path for flowing a mixed flow generated inside the pipe P is usually connected to the downstream side of the liquid delivery port. The flow path connected to the downstream side of the liquid delivery port can be used as a reaction flow path for advancing chemical reaction and extraction. The cross-sectional area of the flow path connected to the downstream side of the liquid delivery port is not particularly limited, but is usually set to 10 mm ² or less in order to make the flow in the flow path dominant.

[0022] The arrangement of the liquid inlet and the liquid outlet is not particularly limited as long as the liquid inlet is positioned upstream of the liquid outlet! /, But at least of the plurality of liquid inlets One liquid inlet is provided at the upstream end of the pipe P, at least one liquid inlet of the remaining liquid inlets is provided at the side periphery of the pipe P, and the liquid outlet is downstream of the pipe P It is preferable to be provided at the end of this. As a result, the liquid introduced at the upstream end of the pipe P is introduced into the liquid introduced at the side peripheral part of the pipe P. It becomes possible to make it easy to be entangled spirally inside. Therefore, it becomes easy to generate the alternating flow and spiral flow described later neatly.

[0023] At this time, it is preferable that the liquid inlet provided in the side periphery of the pipe P is formed in a slit shape. As a result, it becomes possible to introduce a band-like flow into the inside of the liquid introduction rocker pipe P provided on the side periphery of the pipe P, and it is introduced from the liquid introduction port provided at the upstream end of the pipe P. It becomes even easier to entangle the piped liquid and the liquid introduced from the liquid inlet provided in the side periphery of the Neuve P in a spiral shape inside the pipe P.

[0024] The magnetic field generating means C is capable of generating a rotating magnetic field around the central axis L of the pipe P. For example, it may be a permanent magnet that mechanically rotates the outer periphery of the pipe P, but a plurality of coils arranged symmetrically about the central axis L.

0

Is preferable. As a result, the structure of the magnetic field generating means C can be simplified and the mixed flow generating device can be further miniaturized. In addition, the rotor R can be easily controlled because the strength and rotational speed of the rotating magnetic field can be adjusted simply by changing the magnitude and frequency of the alternating current flowing through each coil. It becomes like this. The number of coils used as the magnetic field generating means C is not particularly limited as long as it is 2 or more, but is usually set to 3 or more, more preferably 3n.

[0025] The rotor R is not particularly limited as long as it rotates due to the generation of the rotating magnetic field, and has a conductor (such as a coil) for flowing an induction current, like a rotor used in an induction motor. However, it is preferable to use a magnetized one such as a rotor used in a synchronous motor. As a result, the mixed flow generator can be made to easily exert a large torque just by making the rotor R not slippery and easy to control. However, “the rotor R is magnetized” means either the case where the entire rotor R is magnetically magnetized or the case where the magnetized magnet is fixed to the rotor R. It is assumed that the concept includes cases. The rotor R is normally magnetized so that the magnetic poles appear rotationally symmetric with respect to the central axis.

The invention's effect

[0026] As described above, according to the present invention, the rotor R can be rotated without providing a drive shaft, and a special seal structure for the drive shaft can be omitted. Can be simplified. Therefore, it is possible to greatly reduce the size of the mixed flow generator as well as to reduce the production cost of the mixed flow generator. Therefore, it is possible to provide a mixed flow generator suitable for incorporation in a small reactor called a microreactor.

Brief Description of Drawings

[0027] [FIG. 1] The mixed flow generator of the present invention is cut along a vertical plane including the central axis L of the pipe P

0

It is sectional drawing which showed.

[Fig. 2] Section showing the mixed flow generator of the present invention cut along Y-Y in Fig. 1 FIG.

[Fig. 3] Cross section showing the mixed flow generator of the present invention cut along Y-Υ in Fig. 1

twenty two

FIG.

FIG. 4 is a cross-sectional view of the mixed flow generator of the present invention cut along the Υ-Υ in FIG.

3 3

FIG.

[Fig. 5] A diagram showing liquid F and liquid F flowing in a spiral entanglement inside Neuve

A B

The

FIG. 6 is a diagram showing a liquid F and a liquid F flowing in a spiral manner in the flow path connected to the downstream side of the liquid delivery port OUT.

A B

FIG. 7 is a diagram showing liquid F and liquid F flowing alternately at a short pitch in the flow path connected to the downstream side of the liquid delivery port OUT.

A B

FIG. 8 is a diagram showing liquid F and liquid F that alternately flow at a long pitch in the flow path connected to the downstream side of the liquid delivery port OUT.

A B

Explanation of symbols

B Pivot bearing

C Magnetic field generation means

c ~ c coil

13

F, F, F liquid

A B AB

H Through hole

Center axis of L pipe P

0

P pipe

P pipe upstream

Middle part of P pipe

2

P

3 Pipe downstream

P Fluid flow outlet Connected downstream of OUT

4 1

R rotor

IN, IN Liquid inlet

1 2

OUT Liquid outlet BEST MODE FOR CARRYING OUT THE INVENTION

[0029] A preferred embodiment of the mixed flow generator of the present invention will be described more specifically with reference to the drawings. Fig. 1 shows the mixed flow generator of the present invention cut along a vertical plane including the central axis L of the pipe P.

0

It is sectional drawing which showed the state which carried out. FIG. 2 is a cross-sectional view showing a state in which the mixed flow generator of the present invention is cut at Y Y in FIG. Fig. 3 shows the mixed flow generator of the present invention as shown in Fig. 1.

FIG. 22 is a cross-sectional view showing a state cut by 2 2. Fig. 4 shows the mixed flow generator of the present invention as shown in Fig. 1.

FIG. 3 is a cross-sectional view showing a state cut by 3 3. As shown in FIG. 1, the mixed flow generator of the present invention includes a pipe P for flowing a liquid, a magnetic field generating means C for generating a rotating magnetic field, and a rotor R for adjusting the flow of the liquid. It is equipped with.

[0030] [Pipe P]

As shown in Fig. 1, Neuve P has a pipe upstream P having liquid inlets IN and IN, and a liquid P

1 2 1 body inlet IN, the middle flow of the nozzle for adjusting the flow of liquid F, F introduced from IN

1 2 A B

The part P and the pipe downstream part P having the liquid outlet OUT are formed separately.

2 1 3

It has become. Pipe upstream part P and pipe downstream part P are large diameter opening and small diameter opening.

13

In the middle of the Neub middle part P

2 has a cylindrical shape having openings of equal diameter at both ends. Upstream part of pipe P P

1 and the large-diameter opening of the downstream part 3 of the pipe have substantially the same dimensions as the openings provided at both ends of the pipe midstream part P.

2

Each is connected to each opening of the pipe midstream part P.

2

[0031] The material of the Neuve P is not particularly limited, but if it is a ferromagnetic material such as iron, the rotor R is in a state of being magnetically shielded by the pipe P, and the magnetic field generated by the magnetic field generating means C is Usually, nonmagnetic materials such as glass, ceramics, plastic, aluminum, copper, and stainless steel are selected because they may be weakened internally. The specific material to be selected is appropriately determined in consideration of the compatibility with the liquids F and F. Of this example

A B

In the mixed flow generator, P

1 and downstream of pipe P

3 Austenitic stainless steel is used as the material, and quartz glass is used as the material for Neuve Middle P.

2

[0032] [Pipe upstream part P]

In the nozzle upstream part P, liquid inlets IN and IN for introducing liquids F and F are provided. It is. If the liquid inlets IN and IN are provided at a total of two or more locations, their arrangement is sufficient.

1 2

However, in the mixed flow generator of this embodiment, as shown in FIG. 1, the liquid F introduced from the liquid inlet IN and the liquid F introduced from the liquid inlet IN are used.

1 A 2

And the liquid inlet IN in the upstream part of the pipe

B 1 1

Provided in the small-diameter opening of P, the liquid inlet IN is provided in the side periphery of the pipe upstream P

1 2 1

The Liquid inlet at the upstream part P of the pipe The inner peripheral surface near the IN smoothly guides the liquid F

1 1 A

It is formed in a tapered shape so that it can be made. The liquid inlets IN and IN are not perpendicular to each other.

1 2

It may be arranged at a slight angle.

[0033] Further, in the mixed flow generating device of the present embodiment, the liquid inlet IN is provided in the pipe P.

2

It is formed into a long and narrow slit in the direction parallel to the center axis L, and the liquid inlet IN force is also piped

0 2

The flow of the liquid F introduced into the upstream part P is formed in a band shape. Liquid introduction

1 B

The width along the short direction of the port IN is the inner radius r of the pipe P (upstream part P) and the rotor R.

2 1 1 The difference from the outer radius r δ ι: and the flow rate ratio between liquid F and liquid F, etc.

2 A B

Although not limited, in order to make it easy to generate a spiral flow inside the pipe upstream portion P, it is usually set to δ ι: or less. In the mixed flow generator of this embodiment, the liquid inlet IN

The width along the short direction of 2 is S rZ2 (= 0.5 mm). Also, liquid inlet IN

The width along the longitudinal direction of 2 is 3mm! /

[0034] Further, in the mixed flow generator of this embodiment, as shown in FIG. 2, one surface constituting the inner wall of the liquid inlet IN is connected so as to be in contact with the inner peripheral surface of the pipe upstream portion P. And

twenty one

Liquid F is introduced from the liquid inlet IN in the tangential direction of the inner peripheral surface of the pipe upstream P.

B 2 1

Has become possible. As a result, the liquid inlet IN force is also introduced and the outer peripheral portion of the liquid F flowing in an annular shape in the gap between the inner peripheral surface of the pipe upstream portion P and the outer peripheral surface of the rotor R

It is possible to apply liquid F to 1 A at a smooth angle, and the spiral flow is contained inside pipe P.

B

It can be generated easily. In FIG. 2, the rotor R rotates in the direction of arrow A.

[0035] [Pipe midstream part P]

2

The inner radius r of the pipe midstream part P (pipe P) is the outer radius r of the rotor R and the flow of liquids F and F.

2 1 2 Depending on the amount of AB, etc., there is no particular limitation, but the mixed flow at Neuve middle P In general, the difference between the inner radius r and the outer radius r should be 2mm or less.

1 2

Is preferred. The difference between the inner radius r and the outer radius r is preferably less than 1.5mm lmm

1 2

More preferably, it is as follows. In the mixed flow generator of this embodiment, the inner radius 1 ^ is set to 4 mm, the outer radius r force ^ mm, and the difference between the inner radius r and the outer radius r is set to lmm.

2 1 2

ing. The length of the pipe midstream portion P varies depending on the length of the rotor R and is particularly limited.

2

However, it is 26 mm in the pipe P of this embodiment. The thickness of pipe P is lmm.

[0036] [Pipe downstream part P]

Three

In the Neuve downstream part P, the liquid feed for sending the liquid F mixed with the liquids F and F is sent.

3 A B AB

An outlet OUT is provided. The arrangement of the liquid outlet OUT is not particularly limited as long as it is provided at one or more locations, but in the mixed flow generator of this embodiment,

As shown in Fig. 1, the liquid outlet OUT is connected to the pipe so that the liquids F and F flowing in an annular shape through the gap between the inner peripheral surface of the pipe P and the outer peripheral surface of the rotor R can be sent straight out of the noise P. under

A B 1 It is provided in the small diameter opening of the flow part P. Liquid outlet in pipe downstream part P Near OUT

The inner peripheral surface near 3 3 1 is formed in a tapered shape so that the liquids F and F can be smoothly guided.

A B

[0037] [Magnetic field generating means C]

As shown in FIG. 3, the magnetic field generating means C is arranged on the outer periphery of the pipe midstream portion P.

2

It is intended to generate a rotating magnetic field around the central axis L of the pipe midstream P.

2 0

The In the mixed flow generator of this embodiment, the magnetic field generating means C uses three coils C to C arranged in a rotational symmetry of 120 ° about the central axis L of the pipe P.

0 1 3 The central axes L to L of each coil C to C are perpendicular to the central axis L of the pipe midstream P

1 3 1 3 2 0

It has become. This magnetic field generation means C rotates at a constant speed around the central axis L of the pipe P when a sinusoidal three-phase alternating current with a phase delay of 120 ° is applied to the coils C to C.

1 3 0

A rotating magnetic field that rotates while maintaining a constant strength at a speed is generated. The rotational speed of the rotating magnetic field can be easily adjusted by changing the frequency of the alternating current I ~ 1.

13

The strength of the rotating magnetic field can be determined by changing the magnitude of the alternating currents I to ι.

13

Can be easily adjusted.

[0038] The attachment structure of the coils C to C is not particularly limited. In stage C, the sheet S with coils C to C fixed at equal intervals is placed outside the pipe midstream part P.

1 3 2 Installed by winding around the circumference. As a result, the coil c ~

1 c narrow space 3

The mixed flow generator can be further miniaturized. The sheet S is usually wound with the surface on which the coils c to c are fixed being inward. Sea

13

The material of G is not particularly limited, but the magnetic field generated by each of the coils C to C is transmitted through the sheet S.

13

Carry other coils c ~

1 To prevent the magnetic field generated in c from being affected,

Usually, a non-magnetic material is selected. Inside the coils c to c, there is a ferromagnetic force such as iron

13

If the core material is provided, the strength of the rotating magnetic field generated inside the pipe P can be secured.

[0039] [Rotor R]

The rotor R is cylindrical. The downstream end of the rotor R is tapered and is supported by a pivot bearing B described later. The upstream end of the rotor R is also tapered, and the liquid inlet IN

Liquid F introduced from 1

A's flow is not disturbed. In the rotor R of this embodiment, the tapered surfaces that form the upstream end and the downstream end of the rotor R are V, and the deviation of the tapered surface is 30 ° with respect to the center axis of the rotor scale. It is formed to make. The length of the rotor R is not particularly limited, but in the rotor R of this embodiment, the length from the upstream end to the downstream end is about 40 mm! /.

[0040] The material of the rotor R is not particularly limited as long as it is rotated by the rotating magnetic field generated by the magnetic field generating means C, but in the mixed flow generating device of the present embodiment, it is formed by a permanent magnet. Examples of permanent magnets used for the rotor R include compound magnets such as samarium cobalt magnets and bright magnets, and alloy magnets such as KS magnet steel and MK magnet steel. In the mixed flow generator of this embodiment, a rotor R is formed by forming a samarium correto magnet excellent in corrosion resistance into a cylindrical shape. The rotor R in this embodiment is formed integrally as a whole, and the magnet R is arranged so that one side divided by a plane passing through the central axis is N pole and the opposite side is S pole. Deceived force It is not limited to this. For example, when the rotor R is formed by bonding a plurality of permanent magnets, the number of magnetic poles can be three or more. [0041] [Pivot bearing B]

The pivot bearing B is for supporting a downstream end (pivot) formed in a tapered shape of the rotor R. As shown in FIGS. 1 and 4, the pivot bearing B of this embodiment is a disk-like one, and a pivot hole is provided at the center of one surface thereof. In the pivot bearing of this embodiment, the pivot hole has an opening diameter of 0.5 mm and a depth of about 0.4 mm, and its inner wall surface is formed in a tapered shape. The tapered surface that forms the inner wall surface of the pivot hole is formed so that its generatrix is at an angle of 32.5 ° with respect to the central axis of the pivot bearing B. It is a one-point support.

[0042] Further, as shown in Fig. 4, the pivot bearing B has a through hole H through which the liquids F and F pass.

A B

Provided. By adopting such a configuration, the liquids F and F flowing inside the pipe P

A B

Cut at the periphery of each through hole H and flow from the liquid delivery outlet OUT of the pipe downstream part P

3 1

It is presumed that the mixed flow F can be alternated. The number and arrangement of through holes H

AB

Although not particularly limited, a plurality of through-holes H can be rotated around the central axis L of the pipe P.

0

It is preferable to provide the name. As a result, the liquids F and F flowing inside the pipe P pass through each

A B

Cut regularly around the periphery of the hole H and flow from the liquid outlet OUT of the pipe downstream P

This is because it is assumed that the mixed flow F can be an alternating flow with a uniform pitch.

AB

. In the pivot bearing B of this embodiment, the four through holes H to H are arranged with the pivot hole in the middle.

14

It is provided as a rotationally symmetrical center. The total opening area of the through holes H to H is the liquid F, F

Although it varies depending on the flow rate of 14 AB and is not particularly limited, in the pivot bearing B of this embodiment, it is about 21 mm ² .

[0043] [Method of generating mixed flow]

Next, a method for generating a mixed flow suitable for use with the mixed flow generator of the present invention will be described. The mixed flow generation method of the present invention is suitable for generating a mixed flow such as an alternating flow or a spiral flow. In this case, supply to the liquid inlets IN and IN.

1 2

As the liquids F 1 and F 2, it is preferable to select liquids that are not compatible with each other. This makes the liquid

A B

The situation of the interface formed between F and liquid F can be easily adjusted

A B

Because. In the following, a case where alternating flow, which is a particularly preferable example, is generated will be described as an example. [0044] The pitch of the alternating flow to be generated is not necessarily uniform, but is preferably substantially uniform. This makes it possible to improve the reproducibility of the chemical reaction and extraction performed in the flow path connected to the downstream side of the liquid outlet OUT. Here, “alternate flow pitch” means the distance from the tip of one droplet flowing through the flow path connected to the downstream side of the liquid outlet OUT to the tip of the same type of droplet that flows next. I mean. The pitch of the alternating flow varies the cross-sectional area of the flow path P connected to the downstream side of the liquid outlet OUT and the flow rate of liquid F and liquid F.

1 4 A B

And can be adjusted by.

[0045] The specific flow pitch is determined by the flow path P connected to the downstream side of the liquid outlet OUT.

Depending on the cross-sectional area of Fig. 4, the chemical reaction and the type of extraction, etc., if it is set too short, it may be difficult to separate and recover the liquid F flowing in the flow path P.

4 AB

Therefore, it is usually set to be 0.01 mm or more. The alternating flow pitch is preferably 0.05 mm or more, more preferably 0.2 mm or more. However, if the pitch of the alternating flow is too long, the flow path P

Usually, it is set to 30 mm or less because the chemical reaction and extraction performed in 4 are not so fast and the significance of generating an alternating flow is reduced. The alternate flow pitch is preferably 20 mm or less, more preferably 10 mm or less.

[0046] The cross-sectional area of the flow path P connected to the downstream side of the liquid outlet OUT is not particularly limited.

14

If it is too small, it may be difficult to separate and recover the liquid F flowing through the flow path P.

4 AB

Usually, it is set to 1 X 10 ^_4 mm ² or more. Cross-sectional area of channel P is 1 X 10 ^_3 mm ² or more

Four

It is more preferable that it is l X 10 ^_2 mm ² or more, and 5 X 10 ^_2 mm ² is more preferable. However, if the cross-sectional area of the flow path P is too large, the chemical reaction performed in the flow path P will be extracted.

4 4

Not only does the output speed become so fast, but the liquid F becomes turbulent in the first place and the alternating flow is

AB

Since it may not occur, it is usually set to 10 mm ² or less. Cross section of flow path P

4 is preferably 5 mm ² or less, more preferably 3 mm ² or less.

[0047] The flow ratio of the liquids F and F is not particularly limited, but in order to stabilize the flow state, 1

A B

Z9-9Zl is preferred. 2Z8-8Z2 is more preferred.

[0048] [Experimental results]

Next, in order to confirm the operation of the mixed flow generator of the present invention, an experiment was performed under the following initial conditions. Liquid F: Silicone oil, viscosity lOcst, flow rate 50mLZ min

B

Speed of rotor R: 300rpm

As a result, as shown in FIG. 5, the interface between the liquid F and the liquid F is spiral inside the pipe P.

A B

It was confirmed that it was formed and flowing. At this time, as shown in FIG. 6, the interface between the liquid F and the liquid F is also spiraled inside the flow path P connected to the downstream side of the liquid delivery port OUT.

1 4 A B

It was confirmed that it was formed and flowing. In this way, by generating a spiral flow in the pipe P or in the flow path connected to the downstream side of the liquid delivery port oUT, the interface between the liquid F and the liquid F is compared with the case of the parallel two-phase flow. Can increase the area of the reaction

A B

It is thought that efficiency can be improved.

[0050] Next, by crushing the tip of the channel connected to the downstream side of the liquid outlet OUT (the end on the side not connected to the liquid outlet OU T), the internal pressure of the channel As shown in Fig. 7, the spirally formed interface is interrupted and liquid F and liquid F are separated.

A B

It was confirmed that the alternating flow that appeared repeatedly occurred. In addition, liquid F

When the flow rate of A is increased, an alternating flow with a high volume ratio of liquid F occurs as shown in Fig. 8.

A

Was confirmed. In this way, by generating an alternating flow in the flow path connected to the downstream side of the liquid outlet OUT, a special flow state advantageous for the molecular movement described above is developed, and in the case of the parallel two-phase flow, In comparison, the reaction efficiency between liquid F and liquid F can be improved.

A B

Conceivable.

[0051] From the above experimental results, the mixed flow generator of the present invention can generate a mixed flow preferable for chemical reaction and extraction such as spiral flow and alternating flow under the control of laminar flow by changing each condition. It was divided that it was a thing.

[0052] [Usage]

The mixed flow generator of the present invention can be used for various applications, but can be suitably used for generating a mixed flow for extracting a chemical reaction. Among them, it is suitable for generating a mixed flow such as an alternating flow or a spiral flow under the control of a laminar flow, and particularly suitable for generating an alternating flow. In addition, since it can be easily miniaturized, it can be put to practical use as a microreactor. In particular, microreactors used in synthetic reaction tests for chemical screening and microreactors used in research and development of new chemical processes are expected. In addition, research and development in some fine chemical fields is also expected for practical use as a microreactor for industrial production of products.

Claims

Claims [1] A mixed flow generator for mixing two or more liquids to generate a mixed flow,

[1] A pipe P having a plurality of liquid inlets on the upstream side and a liquid outlet on the downstream side, and [2] arranged on the outer periphery of the pipe P and centering on the central axis L of the Neuve P Generate rotating magnetic field

0

Magnetic field generating means C to

[3] A cylindrical rotor R housed in the pipe P and having a downstream end tapered to rotate about the central axis L by the generation of the rotating magnetic field;

0

[4] Pivot bearing B disposed between the liquid inlet and the liquid outlet and supporting the downstream end of the rotor R;

A mixed flow generator comprising:

[2] The mixed flow generating device according to claim 1, wherein the pivot bearing B is provided with a through hole through which the liquid introduced into the pipe P is also passed.

[3] At least one liquid inlet among the plurality of liquid inlets is provided at the upstream end of the pipe P, and at least one liquid inlet among the remaining liquid inlets is provided at the side periphery of the pipe P. The mixed flow generating device according to claim 1 or 2, wherein the liquid delivery port is provided at an end portion on the downstream side of the pipe P.

4. The mixed flow generating device according to claim 3, wherein the liquid inlet provided in the side periphery of Neuve P is formed in a slit shape.

[5] Magnetic field generating means C is a plurality of coil forces arranged in rotational symmetry about the central axis L.

0

The mixed flow generator according to any one of claims 1 to 4.

6. The mixed flow generator according to any one of claims 1 to 5, wherein the rotor R is magnetized.

[7] The mixing according to any one of claims 1 to 6, wherein the central axis L of the pipe P is arranged in a vertical direction.

0

Flow generator.

[8] The difference between the inner radius r of the pipe P and the outer radius r of the rotor R is 2 mm or less.

1 2

A mixed flow generator according to any of the above.

[9] a cross-sectional area on the downstream side of the liquid delivery port, which are connected to 10 mm ² or less of a flow path according to claim 1

8 Mixed flow generator as described above.

[10] A mixed flow for generating a mixed flow by using the mixed flow generator according to any one of claims 1 to 9. How it occurs.

[11] Incompatible with multiple liquid inlets! 11. The method for generating a mixed flow according to claim 10, wherein a liquid is introduced.

[12] A spiral flow in which the interface between the liquids appears spirally in the gap between the inner peripheral surface of the pipe P and the outer peripheral surface of the roller R is connected to the downstream side of the liquid delivery port. The method for generating a mixed flow according to claim 11, wherein the mixed flow is caused to flow in a flow path.

[13] A spiral flow in which the interface between the liquids appears spirally in the gap between the inner peripheral surface of the pipe P and the outer peripheral surface of the roller R is generated in the flow direction. 12. The method of generating a mixed flow according to claim 11, wherein the mixed flow is converted into an alternating flow that repeatedly appears and flows in a flow path connected to the downstream side of the liquid delivery port.

[14] A chemical reaction method in which an alternating flow or a spiral flow is generated by the mixed flow generation method according to claim 12 or 13, and the chemical reaction is advanced in a flow path connected to the downstream side of the liquid delivery port. Alternatively, an extraction method in which an alternating flow or a spiral flow is generated by the mixed flow generation method described in 13, and the extraction proceeds in a flow path connected to the downstream side of the liquid delivery port.