JP2015213914A - System for manufacturing emulsification dispersion liquid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a system for manufacturing emulsification dispersion liquid, which can apply sufficient shearing force to a liquid mixture containing medium liquid and an emulsification dispersion material to sufficiently atomize the emulsification dispersion material, and can manufacture the emulsification dispersion liquid of high quality while efficiently preventing occurrence of bubbling.SOLUTION: In a system S for manufacturing emulsification dispersion liquid, first and second dispersion apparatuses 5 and 7 carry out emulsion/dispersion of a liquid mixture including the medium liquid and the emulsification dispersion material to produce the emulsification dispersion liquid. A multistage pressure/temperature control device 9 cools the emulsification dispersion liquid discharged from the second dispersion apparatus 7 and further sets back pressure necessary to the first and second dispersion apparatuses 5 and 7, that is back pressure capable of preventing occurrence of bubbling. Moreover, the multistage pressure/temperature control device 9 stepwise or gradually reduces pressure of the emulsification dispersion liquid and finally lowers the pressure of the emulsification dispersion liquid to pressure that bubbling is not caused even when the emulsification dispersion liquid is released to the atmosphere.

Description

  The present invention relates to an emulsified dispersion production system for producing an emulsified dispersion by emulsifying or dispersing a predetermined material in a medium, and more specifically, a medium or a liquid or solid that does not dissolve in the medium. The emulsified dispersion manufacturing system for emulsifying or dispersing the emulsified and dispersed material in a medium liquid basically without using a surfactant by applying a strong shearing force to the mixed liquid containing the emulsified and dispersed material. is there.

  Generally, when a liquid or solid emulsified dispersion material is emulsified or dispersed in a medium liquid to produce an emulsified dispersion, various surfactants are used. However, when the emulsified dispersion may come into contact with the human body, for example, when the emulsified dispersion is a cosmetic or food, the surfactant may be harmful to the human body. Therefore, by applying a strong shearing force to the mixed liquid containing the medium liquid and the liquid or solid emulsified dispersion material that does not dissolve in the medium liquid, the emulsified dispersion material is basically removed from the medium liquid without using a surfactant. Various emulsifying and dispersing devices that are emulsified or dispersed therein have been proposed (see, for example, Patent Documents 1 and 2).

  As this type of emulsifying and dispersing apparatus, for example, a high-pressure jet type or rotary stirring type emulsifying and dispersing apparatus that performs emulsification dispersion by applying a strong shearing force to a mixed liquid containing a medium liquid and a liquid or solid emulsifying dispersion material is known. ing. For example, in a high-pressure injection type emulsifying dispersion device, a high-pressure liquid mixture is jetted from a nozzle to generate a jet flow, and this jet flow collides with a wall or is inverted by a wall to cause a jet flow between liquid and liquid. The kinetic energy is converted into shear energy to emulsify and disperse.

  However, when a strong shear force acts on the mixed liquid, if the field where the shear force acts is non-uniform, for example, if a local pressure difference or speed difference exists in the field where the shear force acts, The air dissolved in the liquid or the air remaining in the medium liquid is bubbled to generate bubbling, and this bubbling generates coarse emulsified and dispersed material particles. Therefore, in this type of conventional emulsifying and dispersing apparatus, back pressure is applied to the mixed solution or the emulsified dispersion to prevent the occurrence of such bubbling.

JP-A-8-89774 International Publication No. 2003/059497

  By the way, in recent years, there has been a demand in the market for an emulsified dispersion having a very high emulsification dispersibility of the material, that is, an emulsified dispersion in which the emulsified dispersion material is very finely divided. Thus, an emulsifying and dispersing device has been developed that applies a higher pressure to the medium liquid or the mixed liquid to further atomize the emulsifying and dispersing material, but with this, the occurrence of bubbling is a more serious problem. It has become. Here, if the back pressure of the mixed liquid or the emulsified dispersion is further increased, the occurrence of bubbling in the emulsified dispersion apparatus can be suppressed. However, this causes a problem that bubbling occurs due to an instantaneous pressure drop that occurs when the emulsified dispersion is discharged from the emulsifying dispersion device.

  When bubbling occurs in the emulsified dispersion liquid, when the powder material is dispersed in the medium liquid (suspension), there arises a problem that air bubbles adhere to the powder surface and the wettability of the powder deteriorates. On the other hand, when a liquid material is emulsified in a liquid medium (emulsion), aerosols are easily formed, resulting in a problem that the quality of the emulsified dispersion is lowered. In addition, since the bubbles absorb energy, there is a problem that energy loss increases and energy efficiency deteriorates. Furthermore, for example, when an unsaturated fatty acid is used as the emulsified dispersion material, the emulsified dispersion material is oxidized by oxygen in the bubbles at a high temperature, which causes a problem that the quality of the product is deteriorated.

  The present invention has been made to solve the above-described conventional problems, and emulsifies by applying a sufficient shearing force to a mixed liquid containing a medium liquid and a liquid or solid emulsified dispersion material that does not dissolve in the medium liquid. The problem to be solved is to provide an emulsified dispersion production system that can sufficiently atomize the dispersion material and that can effectively prevent the occurrence of bubbling and produce an emulsified dispersion of good quality. To do.

  The emulsified dispersion manufacturing system according to the present invention made to solve the above problems includes a medium liquid (for example, water, methanol, ethanol, a mixture thereof, etc.), and a liquid or solid emulsified dispersion material that does not dissolve in the medium liquid. An emulsified dispersion (emulsified and / or dispersed) is emulsified or dispersed in a medium liquid by applying a shearing force to the mixed liquid containing the emulsion to produce an emulsified dispersion (emulsified and / or dispersed). The emulsified dispersion production system includes a mixed liquid supply device, a mixed liquid pressurizing device, an emulsified dispersion device, and a multistage pressure temperature control device in its basic mode.

  In this emulsified dispersion manufacturing system, the mixed liquid supply apparatus supplies a mixed liquid containing the medium liquid and the emulsified dispersion material to the mixed liquid pressurizing apparatus. The mixed liquid pressurizer pressurizes the mixed liquid supplied from the mixed liquid supply apparatus and discharges it to the emulsification dispersion apparatus. The emulsifying dispersion device receives the liquid mixture discharged from the liquid mixture pressurizing device, generates a jet stream of the liquid mixture by converting the pressure energy of the liquid mixture into kinetic energy, and mixes by the shear force generated in the jet stream. The emulsified dispersion material in the liquid is emulsified and dispersed in the medium liquid to produce an emulsified dispersion, which is discharged to a multistage pressure and temperature controller. The multi-stage pressure temperature controller receives the emulsified dispersion discharged from the emulsifying dispersion apparatus, and gradually or gradually decreases the pressure of the emulsified dispersion and controls the temperature of the emulsified dispersion while Back pressure is applied to the emulsified dispersion.

In this emulsified dispersion manufacturing system, the multi-stage pressure and temperature control devices are respectively arranged in the outer jacket (or outer tube) through which the heat transfer medium flows and the transmission in which the emulsified dispersion flows in the outer jacket. And a first to a third control unit arranged in series in order from the upstream side to the downstream side in the flow direction of the emulsified dispersion. The heat transfer tubes of the first to third control units are connected in series. The inner diameter, the overall length, and the overall shape or piping form (piping) of each heat transfer tube of the first to third control units are the pressure drop amounts of the heat transfer tubes in the first to third control units, respectively, ΔP ₁ and ΔP _2. , ΔP ₃ so as to satisfy the relationship of ΔP ₁ > ΔP ₃ > ΔP ₂ according to the flow rate and viscosity (or temperature) of the emulsion dispersion in each heat transfer tube during operation of the emulsion dispersion production system. Is set to

  In the emulsified dispersion manufacturing system according to the present invention, the inner diameter, the overall length, and the overall shape of each heat transfer tube of the first to third control units are respectively laminar (for example, Reynolds number) in each heat transfer tube. May be set to flow at 100 to 2000). In addition, the inner diameter, the overall length, and the overall shape of each heat transfer tube of the first to third control units are such that the emulsified dispersion flows in each heat transfer tube in a turbulent flow (for example, Reynolds number is 3000 to 50000). It may be set.

  The emulsified dispersion production system according to the present invention includes a heat exchanger for heating or cooling the mixed liquid between the mixed liquid supply apparatus and the mixed liquid pressurizing apparatus with respect to the flow direction of the emulsified dispersion. preferable. Moreover, it is preferable that the mixed liquid supply apparatus is provided with a mixed liquid pressure feeding pump that pressure-feeds the mixed liquid to the mixed liquid pressurizing apparatus via a heat exchanger.

In the emulsified dispersion production system according to the present invention, each emulsifying dispersion device has pores, and the pores are connected in series in order from the upstream side to the downstream side in the flow direction of the emulsion dispersion. It is preferable to have first to third pore members (pore cells) arranged in series. In this case, if the inner diameters of the pores of the first to third pore members are d ₁ , d ₂ , and d ₃ , the inner diameters d ₁ , d ₂ , and d ₃ are d ₂ > d ₁ > preferably set so as to satisfy the relation d _3.

  In the emulsified dispersion manufacturing system according to the present invention, it is preferable that the emulsification dispersion apparatus is composed of a first emulsification dispersion apparatus and a second emulsification dispersion apparatus connected in series. In this case, a first additive supply device for adding the first additive to the emulsified dispersion is provided downstream of the first emulsification dispersion device, and the second additive is added downstream of the second emulsification dispersion device. It is more preferable that a second additive supply device to be added is attached.

  According to the present invention, since a high pressure is applied to the mixed solution by the mixed solution pressurizing device, a strong shearing force can be applied to the mixed solution in the emulsifying and dispersing device, and the emulsified and dispersed material can be prepared without using a surfactant. It can be sufficiently atomized. In addition, since the back pressure is applied to the emulsified dispersion in the emulsifying dispersion device by the multistage pressure temperature control device, the occurrence of bubbling in the emulsifying dispersion device can be prevented. Further, in the multi-stage pressure temperature control device, the pressure of the emulsified dispersion is lowered stepwise or gradually and no sudden or instantaneous pressure drop occurs, so the emulsified dispersion is discharged from the emulsion dispersion production system to the outside. No bubbling occurs in the emulsified dispersion. In addition, the temperature of the emulsified dispersion discharged from the emulsified dispersion production system can be preferably controlled. For this reason, the quality of the emulsified dispersion as a product can be enhanced, and energy loss can be reduced to increase energy efficiency.

1 is a system configuration diagram of an emulsified dispersion manufacturing system according to an embodiment of the present invention. It is a schematic diagram which shows schematic structure of the 1st, 2nd emulsification dispersion | distribution apparatus which comprises the emulsification dispersion manufacturing system shown in FIG. It is a schematic diagram which shows schematic structure of the multistage pressure temperature control apparatus which comprises the emulsification dispersion manufacturing system shown in FIG. It is a graph which shows the aspect of the positional pressure change of the emulsification dispersion liquid in a multistage pressure temperature control apparatus.

  Hereinafter, embodiments of the present invention will be specifically described. First, the outline | summary of the emulsification dispersion manufacturing system which concerns on embodiment of this invention is demonstrated. In general, in the emulsification dispersion apparatus in which the emulsified dispersion material is emulsified and dispersed by applying a strong shearing force to the mixed liquid containing the medium liquid and the liquid or solid emulsified dispersing material, when a strong shearing force is applied to the mixed liquid, When the field where the shear force acts is non-uniform, for example, when the balance of the speed or pressure of the liquid mixture in the field where the shear force acts is lost, bubbling occurs, and the particles of the emulsified dispersion material become non-uniform and coarse particles Occurs. Conventionally, the occurrence of bubbling is prevented by setting the mixed solution to a very high pressure.

  However, enormous energy is consumed when the mixed liquid is brought to a very high pressure. Therefore, in the emulsified dispersion production system according to the present invention, a multistage pressure temperature control device is provided downstream of the emulsification dispersion device, so that the occurrence of bubbling is prevented without applying a high pressure to the mixed solution. Thereby, the size or shape of the particles of the emulsified dispersion material is made uniform, the generation of coarse particles is effectively prevented, and the energy consumption is reduced.

  The basic technical idea of the emulsified dispersion production system according to the present invention is based on the outlet of the emulsified dispersion as a product, that is, based on the time when the produced emulsified dispersion is released under atmospheric pressure. In other words, the pressure drop that occurs in the above configuration is such that no bubbling occurs. In other words, the origin of the idea is set on the downstream side so as to cope with various conditions such as the input energy on the upstream side. The emulsified dispersion manufacturing system according to the present invention is based on the fact that an emulsifying dispersion device for emulsifying or dispersing an emulsified dispersion material in a medium liquid and a multistage pressure temperature control device for preventing bubbling are connected in series. Characteristic.

In the emulsification dispersion apparatus, the first to third pore members having different inner diameters of the pores are connected in series via a seal in series in order from the upstream side to the downstream side in the flow direction of the emulsion dispersion. Is. If the inner diameters of the pores of the first to third pore members are d ₁ , d ₂ , and d ₃ , respectively, the inner diameters d ₁ , d ₂ , and d ₃ are expressed as d ₂ > d ₁ > d. ₃ is set so as to satisfy the relationship of ₃ . In the embodiments of the present invention described above and below, the emulsification and dispersion apparatus has three pore members, that is, the first to third pore members. However, the emulsification and dispersion apparatus has four or more pore members. You may have.

  The multistage pressure temperature control device has first to third control units arranged in series in order from the upstream side to the downstream side in the flow direction of the emulsified dispersion. Each of the first to third control units has a mantle (shell) or outer tube through which the heat transfer medium flows, and a heat transfer tube arranged inside the mantle and through which the emulsified dispersion flows. ing. These heat transfer tubes are connected in series. The multi-stage pressure / temperature control device applies a required back pressure to the step emulsification / dispersion device, and reduces the back pressure stepwise or gradually by the first to third control units. Here, the first to third control units depressurize the emulsified dispersion to a pressure that does not cause bubbling when released under atmospheric pressure, for example, atmospheric pressure, and the emulsified dispersion to a predetermined temperature, for example, room temperature. Allow to cool.

In this multi-stage pressure and temperature control device, the inner diameter, the overall length, and the overall shape or overall form of each heat transfer tube of the first to third control units are the flow rate (average flow rate) of the emulsified dispersion in each heat transfer tube. ) And viscosity (or average temperature), if the pressure drop amounts of the heat transfer tubes in the first to third control units are ΔP ₁ , ΔP ₂ , and ΔP ₃ , respectively, ΔP ₁ > ΔP ₃ > ΔP ₂ Set to satisfy the relationship. In addition, the connection part of each heat exchanger tube is each provided with the pipe expansion part which interrupts | blocks the pressure_reduction | reduced_pressure action between the front and back heat exchanger tubes. In short, the amount of pressure reduction as a whole of the multi-stage pressure temperature control device can be considered as the sum of the amount of pressure reduction of the first to third control units (heat transfer tubes). The flow resistance of the heat transfer tube or the amount of pressure reduction is set. The flow resistance or the amount of pressure reduction of each heat transfer tube is the inner diameter and corresponding length of each heat transfer tube, the average flow velocity (local average) and the viscosity or average temperature (location) of the emulsified dispersion in each heat transfer tube. Average).

  Furthermore, the multi-stage pressure temperature control device controls the temperature of the emulsified dispersion in the multi-stage pressure temperature control device by adjusting the supply temperature and flow rate of the heat transfer medium flowing in each jacket of the first to third control units. To do. For example, the temperature of the emulsified dispersion in the multistage pressure temperature control device or the temperature of the emulsified dispersion discharged from the multistage pressure temperature control device by flowing cooling water as a heat transfer medium in each jacket and adjusting the flow rate. Is cooled to a predetermined target temperature.

  Furthermore, by adjusting the supply temperature and flow rate of the heat transfer medium flowing in each jacket of the first to third control units to control the temperature of the emulsified dispersion in each heat transfer tube, the emulsification dispersion in each heat transfer tube The viscosity of the liquid and thus the flow resistance or pressure drop of each heat transfer tube can be controlled in an auxiliary manner. The flow resistance or pressure drop amount in each heat transfer tube of the first to third control units is mainly controlled by the inner diameter and corresponding length of each heat transfer tube and the flow rate of the emulsified dispersion in each heat transfer tube. Of course.

  In the embodiments of the present invention described above and below, the multistage pressure temperature control device is configured by three control units, that is, first to third control units, but the multistage pressure temperature control device is configured by four or more control units. May be. For example, when the pressure of the liquid mixture supplied to the emulsifying dispersion device and thus the pressure in the emulsification dispersion device is increased, the first to fourth control units or the first to fifth controls are performed in order to reliably prevent the occurrence of bubbling. A multi-stage pressure temperature control device constituted by a part may be provided, and the degree of change in the stepwise or gradual pressure drop amount in the multi-stage pressure temperature control device may be slowed down.

  The multi-stage pressure and temperature control device according to the present invention can also be applied to conventionally used rotary and high-pressure emulsifying and dispersing devices. In this case as well, the multi-stage pressure and temperature control device applies necessary back pressure to the emulsifying dispersion device to suppress the occurrence of bubbling in the emulsification dispersion device, while reducing the back pressure stepwise or gradually. The pressure of the emulsified dispersion is finally reduced to a pressure at which bubbling does not occur even when the pressure is finally released to atmospheric pressure, for example, approximately atmospheric pressure.

Hereinafter, a specific configuration and function of an emulsified dispersion manufacturing system according to the present invention will be described with reference to the accompanying drawings.
As shown in FIG. 1, in the emulsified dispersion manufacturing system S according to the embodiment of the present invention, with respect to the flow direction of the emulsified dispersion that is a raw material mixture or product, in order from the upstream side to the downstream side, Liquid mixture supply tank 1, liquid mixture pressure feed pump 2, heat exchanger 3, liquid mixture pressure pump 4, first emulsification dispersion device 5, first additive supply port 6, and second emulsion dispersion device 7, the second additive supply port 8, and the multistage pressure temperature control device 9 are arranged in series.

  In the liquid mixture supply tank 1, a liquid mixture containing a medium liquid (for example, water) and a liquid or solid emulsified dispersion material that does not dissolve in the medium liquid is stored. Although not shown in detail, a stirrer is provided in the liquid mixture supply tank 1, and this stirrer constantly stirs the liquid mixture so that the emulsified dispersion material is macroscopically distributed almost uniformly in the medium liquid. doing. Here, “emulsified dispersion material” means a material to be emulsified or dispersed in a medium liquid.

  The mixed solution in the mixed solution supply tank 1 is supplied to the mixed solution pressurizing pump 4 through the heat exchanger 3 at a predetermined flow rate by the mixed solution pressure feed pump 2. The heat exchanger 3 uses a suitable heat transfer medium such as steam, high-temperature water (for example, 80 to 100 ° C.), high-temperature mineral oil (for example, 100 to 500 ° C.), etc. Heat to a predetermined temperature suitable for emulsification and dispersion in water. As the heat exchanger 3, for example, a double pipe heat exchanger, a coil heat exchanger, a plate heat exchanger, or the like can be used. In some cases, the mixed solution may be cooled rather than heated. In this case, for example, low-temperature water (for example, 0 to 5 ° C.), low-temperature refrigerant (for example, −20 to 0 ° C.), or the like may be used as the heat transfer medium. Note that the heat exchanger 3 may be omitted if it is not necessary to adjust the temperature of the mixed solution.

  The liquid mixture pressurizing pump 4 pressurizes the liquid mixture supplied from the liquid mixture pressure feed pump 2 via the heat exchanger 3 to, for example, 30 to 300 MPa (300 to 3000 bar) and discharges it downstream. The high-pressure mixed liquid discharged from the mixed-liquid pressurizing pump 4 is first supplied to the first emulsifying / dispersing device 5 while maintaining this high pressure. As will be described in detail later, the first emulsifying dispersion device 5 generates an emulsified dispersion by emulsifying and dispersing the emulsified dispersion material in the medium liquid by liquid / liquid shearing by jet flow, and discharging this to the downstream side. To do. When a part of the emulsified and dispersed material is not emulsified and dispersed in the medium liquid, the emulsified and dispersed material is emulsified and dispersed by a second emulsifying and dispersing device 7 described later. Here, the “emulsified dispersion liquid” means a material to be emulsified and / or a liquid in which the material to be dispersed is emulsified or dispersed in a medium liquid (for example, emulsion, suspension, etc.).

  The emulsified dispersion discharged from the first emulsifying / dispersing device 5 is supplied to the second emulsifying / dispersing device 7 via the first additive supply port 6. In the first additive raw material supply port 6, a predetermined first additive is added to the emulsified dispersion. The first additive may be one kind of additive or a mixture of plural kinds of additives. Since the emulsified dispersion in the first additive supply port 6 has a high pressure, the first additive is pressed into the first additive supply port 6 by a high-pressure pump (not shown). If not necessary, the first additive may not be added.

  Then, the emulsified dispersion liquid to which the first additive is added is discharged from the first additive supply port 6 and supplied to the second emulsification dispersion apparatus 7. When there is an emulsified dispersion material that is not emulsified and dispersed in the emulsified dispersion produced by the first emulsified dispersion device 5, the second emulsified dispersion device 7 basically uses the first emulsified dispersion material as the first emulsified dispersion. Emulsified and dispersed in the medium liquid by the same liquid / liquid shear as in the apparatus 5 to produce an emulsified dispersion in which the emulsified and dispersed material is completely emulsified and dispersed, and this is discharged downstream. In addition, when the emulsified dispersion material is sufficiently emulsified and dispersed by the first emulsifying and dispersing apparatus 5, the second emulsifying and dispersing apparatus 7 may be omitted.

  The emulsified dispersion discharged from the second emulsifying dispersion device 7 is supplied to the multistage pressure temperature control device 9 via the second additive supply port 8. In the second additive supply port 8, a predetermined second additive is added to the emulsified dispersion. The second additive may be one kind of additive or a mixture of plural kinds of additives. Since the emulsified dispersion in the second additive supply port 8 is at a high pressure, the second additive is pressed into the second additive supply port 8 by a high-pressure pump (not shown). If not necessary, the second additive may not be added.

  Then, the emulsified dispersion to which the second additive is added is discharged from the second additive raw material supply port 8 and supplied to the multistage pressure temperature controller 9. As will be described in detail later, the multistage pressure and temperature control device 9 applies a predetermined back pressure to the emulsified dispersion in the second emulsification dispersion device 7 and the emulsification dispersion in the first emulsification dispersion device 5, While preventing the occurrence of bubbling inside the first and second emulsifying dispersion devices 5 and 7, the pressure of the generated emulsified dispersion is gradually or gradually reduced, and at the outlet of the multistage pressure and temperature control device 9. The pressure of the emulsified dispersion is reduced to a pressure at which bubbling does not occur even when the emulsified dispersion is released under atmospheric pressure, for example, atmospheric pressure.

  FIG. 2 is a diagram schematically showing the structure of the first emulsifying dispersion device 5. The structure and function of the second emulsification dispersion device 7 are substantially the same as those of the first emulsification dispersion device 5 shown in FIG. Only the configuration and function will be described. As shown in FIG. 2, the first emulsification dispersion device 5 includes a nozzle member 11, a cylindrical passage member 12, and a substantially columnar main body 13 that are connected to each other in series.

  Here, the nozzle member 11, the passage member 12, and the main body portion 13 are arranged so that their central axes are in a straight line, that is, coaxial. The main body 13 includes first to third pore members 14 to 16 that are arranged in order from the upstream side to the downstream side in the flow direction of the mixed liquid or the emulsified dispersion liquid (rightward in the positional relationship in FIG. 2). Yes. The first to third pore members 14 to 16 respectively have columnar first to third pores 17 to 19 that penetrate the first to third pore members 14 to 16 in the central axis direction. doing. The first to third pore members 14 to 16 are connected to each other via a ring-shaped seal member 20.

Here, if the inner diameters of the first to third pores 17 to 19 of the first to third pore members 14 to 16 are d ₁ , d ₂ , and d ₃ , respectively, the inner diameters d ₁ and d ₂ will be described. , D ₃ are set so as to satisfy the relationship of d ₂ > d ₁ > d ₃ . Here, the inner diameter of the cylindrical passage member 12 is set to d ₂ greater than. Incidentally, the inner diameter of the passage member 12 may be the same as d _2. The inner diameter of each seal member 20 is set to d ₂ greater than. The inner diameters of the first to third pore members 14 to 16 are preferably set within a range of 0.4 to 4 mm, for example, according to the properties of the mixed liquid or the emulsified dispersion, and the length thereof is, for example, 4 It is preferably set within a range of ˜40 mm. The inner diameter of the nozzle member 11 is preferably set within a range of, for example, 0.1 to 0.5 mm, and the nozzle length is within a range of, for example, 1 to 4 mm, depending on the properties of the mixed liquid or emulsified dispersion. Preferably set. The inner diameter of the seal member 20 is preferably set within a range of 2 to 8 mm, for example.

  In the first emulsifying / dispersing device 5, the first pore member 14 or the first pore 17 having a relatively small diameter applies a predetermined back pressure to the mixed liquid in the channel member 12 having a relatively large diameter. Further, the third pore member 16 or the third pore 19 having the smallest diameter has a predetermined back pressure against the mixed liquid or emulsified dispersion in the second pore member 15 or the second pore 18 having the largest diameter. multiply. As described above, since the inner diameter of the ring-shaped seal member 20 is larger than the inner diameter d2 of the second pore member 15 or the second pore 18 having the largest diameter, the pressure of the mixed liquid or the emulsified dispersion liquid is instantaneously adjusted. The first to third pore members 14 to 16 can cause independent pressure reducing actions by relaxing to the above.

  In the 1st emulsification dispersion | distribution apparatus 5, back pressure sufficient to prevent the bubbling which is going to be produced by this strong shearing can be applied with respect to the channel | path member 12 in which the strongest shearing occurs. In addition, the third pore member 16 or the third pore 19 having the smallest diameter applies a back pressure that does not cause bubbling due to the pressure relaxation to the pressure relief by the second pore member 15 having the largest diameter. The inner diameter of the cylindrical connection member 21 communicating with the first additive raw material supply port 6 on the downstream side of the third pore member 16 is the third pore member 16 or the third pore 19. It is sufficiently large with respect to the inner diameter d3.

  Thus, the mixed liquid pressurized to a high pressure of, for example, 30 to 300 MPa (300 to 3000 bar) by the mixed liquid pressurizing pump 4 is converted into a high-speed jet flow by the nozzle member 11 and is then introduced into the passage member 12. Erupts. The jet stream ejected into the passage member 12 applies a strong shearing force to the surrounding liquid mixture to cause emulsification dispersion of the emulsified dispersion material. And the jet flow itself of the mixed liquid flows into the first to third pore members 14 to 16 while losing its kinetic energy, and turns into the mixed liquid existing in the first to third pore members 14 to 16. A shearing force is applied to produce an emulsified dispersion of the emulsified dispersion material to produce an emulsified dispersion.

  Note that the first to third fine pore members 14 to 16 have kinetic energy of the jet flow due to liquid / liquid shear between the jet flow of the mixed liquid passing through the axial center and the mixed liquid existing therearound. Is converted into shear energy or heat energy, and has small-diameter pores from which the kinetic energy is gradually lost. The setting of the inner diameter and the number of steps of the first to third pore members 14 to 16 or the first to third pores 17 to 19 is extremely important for producing a powerful emulsifying and dispersing action without causing bubbling. Is an element.

  In this manner, since the mixed liquid is pressurized by the mixed liquid pressurizing pump 4 in the first and second emulsifying and dispersing apparatuses 5 and 7, the mixed liquid is converted into the mixed liquid in the first and second emulsifying and dispersing apparatuses 5 and 7. A strong shearing force can be applied, and the emulsified and dispersed material can be sufficiently atomized. In addition, since back pressure is applied to the first and second emulsifying and dispersing devices 5 and 7 by the multistage pressure and temperature control device 9 described later, the occurrence of bubbling in the first and second emulsifying and dispersing devices 5 and 7 is prevented. can do.

  In addition, the 1st-3rd fine pore members 14-16 shown in FIG. 2 are respectively comprised by the single cylindrical member from which an internal diameter mutually differs. However, each of the first to third pore members 14 to 16 may be composed of a plurality of (for example, 2 to 3) cylindrical members. In this case, in each pore member 14-16, it is preferable to interpose the sealing member 20 between each cylindrical member.

  FIG. 3 is a diagram schematically showing the structure of the multistage pressure temperature control device 9. When the multistage pressure and temperature control device 9 receives the emulsified dispersion supplied from the second emulsifying and dispersing device 7 via the second additive raw material supply port 8, and reduces the pressure of the emulsified dispersion stepwise or gradually. At the same time, a back pressure is applied to the emulsified dispersion in the first and second emulsifying dispersion devices 5 and 7. Moreover, the multistage pressure temperature control apparatus 9 cools the emulsified dispersion liquid, which has become high temperature due to the emulsification dispersion by the shearing force, to a predetermined temperature, for example, room temperature (20 to 30 ° C.). Further, the pressure drop is controlled in an auxiliary manner by controlling the temperature and hence the viscosity of the emulsified dispersion.

  As shown in FIG. 3, the multistage pressure temperature control device 9 includes first to first connected in series from the upstream side to the downstream side in the flow direction of the emulsified dispersion (rightward in the positional relationship in FIG. 3). 3 control units 23 to 25 are provided. Here, the first control unit 23 is disposed in the first mantle 26 through which cooling water (heat transfer medium) flows, and the first outer mantle 26 is disposed in the first mantle 26 and the emulsified dispersion liquid flows through the first mantle 26. And a heat transfer tube 29. The second control unit 24 includes a second mantle 27 through which cooling water flows, and a second heat transfer tube 30 that is disposed inside the second mantle 27 and through which the emulsified dispersion flows. Yes. The third control unit 25 includes a third outer sheath 28 through which cooling water flows, and a third heat transfer tube 31 that is disposed inside the third outer sheath 28 and through which the emulsified dispersion flows. Yes.

  In the multistage pressure and temperature control device 9, the first to third heat transfer tubes 29 to 31 are all circular in cross section and are connected in series via the communication member 35. Regarding the flow direction of the emulsified dispersion, the upstream end of the first heat transfer tube 29 and the downstream end of the third heat transfer tube 31 are respectively connected to the upstream side and the downstream side via the communication member 35. Connected to the pipe.

In the multistage pressure and temperature control device 9, the inner diameter, the overall length, and the overall shape or piping shape (piping, configuration) of the first to third heat transfer tubes 29 to 31 are the pressures of the first to third heat transfer tubes 29 to 31. Assuming that the reductions are ΔP ₁ to ΔP ₃ , respectively, ΔP ₁ > ΔP ₃ > ΔP in consideration of physical properties such as flow velocity, density and viscosity of the emulsified dispersion flowing in the first to third heat transfer tubes 29 to 31. It is set to satisfy the relationship of ₂ . That is, the temperature, flow rate, density and viscosity of the emulsified dispersion flowing in the first to third heat transfer tubes 29 to 31 are preferably set so that an emulsified dispersion having a predetermined physical property or composition is obtained, and ΔP ₁ The inner diameter, the overall length, and the overall shape or pipe shape of the first to third heat transfer tubes 29 to 31 are determined so as to satisfy the relationship of> ΔP ₃ > ΔP ₂ .

Note that to set so as to satisfy this manner the pressure drop ΔP ₁ ~ΔP ₃ of the first to third heat transfer tubes 29 to 31 of the multi-stage pressure temperature controller 9, ΔP _1> ΔP _3> of [Delta] P ₂ related The inventor of the present application is based on the result of confirming the occurrence of bubbling by experiment for various combinations of pressure drop in the first to third heat transfer tubes 29 to 31 of the multistage pressure and temperature control device 9. From this experiment, it was found that the combination of pressure drops where bubbling does not occur is only when the above condition is satisfied, and bubbling occurs when the combination does not satisfy this condition.

As described above, the inner diameter, the overall length, the overall shape, or the piping form of the first to third heat transfer tubes 29 to 31 are determined according to the physical properties such as the flow rate, density, and viscosity of the emulsified dispersion, ΔP ₁ > ΔP ₃ > is set so as to satisfy the relationship of [Delta] P _2, but the pressure reduction amount ΔP ₁ ~ΔP ₃ in the first to third heat transfer tubes 29 to 31 can be calculated or estimated by a method described below.

<When the emulsified dispersion is laminar>
First, a method of calculating pressure drop amounts ΔP _{1 to} ΔP ₃ when the emulsified dispersion flows in a laminar flow in the first to third heat transfer tubes 29 to 31 will be described. In this case, the inner diameters of the first to third heat transfer tubes 29 to 31 are D _{1 to} D ₃ , the corresponding lengths of the first to third heat transfer tubes 29 to 31 are Le _{1 to} Le ₃ , respectively. The flow rates of the emulsified dispersions in the first to third heat transfer tubes 29 to 31 are U _{1 to} U ₃ , respectively, and the viscosities of the emulsified dispersions in the first to third heat transfer tubes 29 to 31 are μ ₁ to μ ₃ , respectively. When the gravity conversion coefficient is g (9.8 kg · m / Kg · sec ² ), the pressure drop amounts ΔP _{1 to} ΔP ₃ are respectively expressed by the following formulas 1 to 3, that is, Hagen-Poiseuille It can be calculated by an equation.

ΔP ₁ = 32 ・ U ₁・ Le ₁・ μ ₁ / (g ・ D ₁ ² ) ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Equation 1
ΔP ₂ = 32 ・ U ₂・ Le ₂・ μ ₂ / (g ・ D ₂ ² ) ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ 2
ΔP ₃ = 32 ・ U ₃・ Le ₃・ μ ₃ / (g ・ D ₃ ² ) ・ ・ ・ ・ ・ Equation 3

Here, the “equivalent length Le” is a straight pipe having the same inner diameter as that of the heat transfer pipe, which causes the same pressure drop or pressure loss as the pressure drop or pressure loss of actual heat transfer pipes of various forms. It means the length (the same applies to the case described below where the emulsified dispersion flows in turbulent flow). In other words, in the present invention, by replacing various heat transfer tubes having various pipe joints and the like and having various overall shapes with straight pipes that cause the same pressure drop (identified), Hagen-Poiseuille's The formula can be used. It should be noted that methods for calculating the “equivalent length” of various forms of pipes or pipe joints are well known to those skilled in the art and will not be described in detail. When the cross section of the first to third heat transfer tubes 29 to 31 is not circular, for example, an ellipse, a square, a rectangle or the like, instead of the inner diameters D _{1 to} D ₃ , “equivalent diameter (4 × tube cross-sectional area / (Soaking length) ”may be used (the same applies to the case described later in which the emulsified dispersion flows in a turbulent flow).

Thus, when the flow of the emulsified dispersion in the first to third heat transfer tubes 29 to 31 is a laminar flow, that is, when the Reynolds number is approximately 2300 or less, the first to third heat transfer tubes 29. Regardless of the roughness of the inner surfaces of the first to third heat transfer tubes, the pressure drop or pressure loss at ˜31 can be calculated by the above formulas 1 to 3, that is, the Hagen-Poiseuille formula, respectively. For example, the viscosity μ of the emulsified dispersion is 3.6 kg / m · hr (1 centipoise), the density ρ is 1000 kg / m ³ , and the flow rate U is 1800 m / hr (0.5 m / sec). In this case, if the inner diameter D of the heat transfer tube is 0.002 m (2 mm), the Reynolds number of the flow of the emulsified dispersion in the heat transfer tube is 1000 as follows, and therefore the flow of the emulsified dispersion is a laminar flow. is there.

Re = D · U · ρ / μ = 0.002 × 1800 × 1000 / 3.6 = 1000

Thus, when the emulsified dispersion is caused to flow through the first to third heat transfer tubes 29 to 31 in a laminar flow, first, the temperature, flow velocity, density and viscosity of the emulsified dispersion flowing in the first to third heat transfer tubes 29 to 31. after having set the, so that the pressure reduction amount ΔP ₁ ~ΔP ₃ of the first to third heat transfer tubes 29 to 31 using the above formula 1 formula 3 satisfies the relationship ΔP _1> ΔP _3> ΔP ₂ What is necessary is just to determine the inner diameter of the 1st-3rd heat exchanger tubes 29-31, the full length, and the whole shape thru | or piping shape.

<When the emulsified dispersion is laminar>
Next, a method for calculating the pressure drop amounts ΔP _{1 to} ΔP ₃ when the emulsified dispersion flows in a turbulent flow in the first to third heat transfer tubes 29 to 31 will be described. In this case, if the first to third heat transfer tubes 29 to 31 are smooth tube, the pressure drop ΔP ₁ ~ΔP ₃ in the first to third heat transfer tubes 29 to 31, respectively, formulas 4-6 below, namely It can be calculated by the Karman-Nikuradse equation. In this emulsified dispersion manufacturing system S, all of the first to third heat transfer tubes 29 to 31 are smooth tubes, for example, smooth stainless steel tubes whose inner wall surface has the same roughness as the glass tube, A copper tube or the like is used.

ΔP ₁ = 4 ・ f ₁・ [(ρ ₁・ U ₁ ² / (2 ・ g)] ・ (Le ₁ / D ₁ ) ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Equation 4
However, 1 / f ₁ ^0.5 = 4 · log [(D ₁・ U ₁・ ρ ₁ / μ ₁ ) ・ f ₁ ^0.5 ] −0.4

ΔP ₂ = 4 ・ f ₂・ [(ρ ₂・ U ₂ ² / (2 ・ g)] ・ (Le ₂ / D ₂ ) ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Equation 5
However, 1 / f ₂ ^0.5 = 4 · log [(D ₂ · U ₂ · ρ ₂ / μ ₂ ) · f ₂ ^0.5 ] −0.4

ΔP ₃ = 4 ・ f ₃・ [(ρ ₃・ U ₃ ² / (2 ・ g)] ・ (Le ₃ / D ₃ ) ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Equation 6
However, 1 / f ₃ ^0.5 = 4 · log [(D ₃・ U ₃・ ρ ₃ / μ ₃ ) ・ f ₃ ^0.5 ] −0.4

In Equations 4 to 6, ρ _{1 to} ρ ₃ are the densities of the emulsified dispersion flowing in the first to third heat transfer tubes 29 to 31, respectively. Further, f _{1 to} f ₃ are tube friction coefficients of the first to third heat transfer tubes 29 to 31, and the first to third heat transfer tubes 29 to 31 are smooth tubes, and thus are functions only of the Reynolds number. . The meaning of the other symbols is the same as when the emulsified dispersion flows in a laminar flow.

Thus, when the flow of the emulsified dispersion in the first to third heat transfer tubes 29 to 31 is a turbulent flow, that is, when the Reynolds number exceeds about 2300, the first to third heat transfer tubes 29 to When the first to third heat transfer tubes 29 to 31 are smooth tubes, the pressure drop or pressure loss at 31 can be calculated by the above equations 4 to 6, that is, the Kalman niclase equation, respectively. For example, when the viscosity μ of the emulsified dispersion is 3.6 kg / m · hr (1 centipoise), the density ρ is 1000 kg / m ³ , and the flow rate U is 3600 m / hr (1 m / sec). If the inner diameter D of the heat transfer tube is 0.003 m (3 mm), the Reynolds number of the flow of the emulsified dispersion in the heat transfer tube is 3000 as follows, and therefore the flow of the emulsified dispersion is turbulent.

Re = D ・ U ・ ρ / μ = 0.003 × 3600 × 1000 / 3.6 = 3000

Thus, when the emulsified dispersion is caused to flow through the first to third heat transfer tubes 29 to 31 by turbulent flow, first, the temperature, flow velocity, density and viscosity of the emulsified dispersion flowing through the first to third heat transfer tubes 29 to 31. after having set the, so that the pressure reduction amount ΔP ₁ ~ΔP ₃ of the first to third heat transfer tubes 29 to 31 using the above equation 4 to equation 6 satisfies the relationship ΔP _1> ΔP _3> ΔP ₂ What is necessary is just to determine the inner diameter of the 1st-3rd heat exchanger tubes 29-31, the full length, and the whole shape thru | or piping shape.

As described above, in the multi-stage pressure and temperature control device 9, the inner diameter, the overall length, and the overall shape or the pipe shape of the first to third heat transfer tubes 29 to 31 are determined in consideration of the viscosity and density of the emulsified dispersion liquid. The pressure drops ΔP ₁ to ΔP _{3 of the first} to third heat transfer tubes 29 to 31 are preferably determined so as to satisfy the relationship of ΔP ₁ > ΔP ₃ > ΔP ₂ , but in this embodiment, the first heat transfer tube 29 and the first heat transfer tube 29 The two heat transfer tubes 30 are coiled tubes (conduit tubes).

Then, the first heat transfer pipe 29, in order to maximize its pressure reduction amount [Delta] P _1, the inner diameter is relatively small, the pipe total length is relatively long, the coil diameter is relatively small, the coil pitch is relatively small set Has been. That is, the first heat transfer tube 29 is a closely wound coiled tube having a small coil diameter. On the other hand, the second heat transfer pipe 30, in order to make the pressure decrease amount [Delta] P ₂ to a minimum, the inner diameter is relatively large, the tube overall length is relatively short, the coil diameter is relatively small, the coil pitch is relatively small set Has been. That is, the second heat transfer tube 30 is a sparsely coiled tube having a large coil diameter.

The third heat transfer tube 31 is a tube having an overall shape or a rectangular wave shape, that is, a tube having a shape in which rectangular irregularities are repeated. The third heat transfer tube 31 is an assembly in which a plurality of straight pipes 37 are connected to each other using a 90 ° elbow 38 at each bent portion, as shown in an enlarged view in FIG. Of structure. Here, the total length of the third heat transfer tube 31, the inner diameter of the straight tube 37, and the shape of the 90 ° elbow 38 are such that the pressure drop amount ΔP ₃ in the third heat transfer tube 31 is the pressure drop amount ΔP ₃ in the first heat transfer tube 29. It is preferably set to be smaller than _{1 and} larger than the pressure drop amount ΔP ₂ of the second heat transfer tube 30. In addition, the 3rd heat exchanger tube 31 can decompose | disassemble and can clean the inside easily.

An example of the dimensions or overall shapes of the first to third heat transfer tubes 29 to 31 is shown below.
<First heat transfer tube>
Inner diameter D ₁ 1mm
Total length L ₁ 5m
Equivalent length Le ₁ 6m
Overall shape Coiled (serpentine)
Coil diameter: 50mm
Coil pitch: 15mm

<Second heat transfer tube>
Inner diameter _D 2 3 mm
Tube total length L ₂ 3m
Equivalent length Le ₂ 3.5m
Overall shape Coiled (serpentine)
Coil diameter: 100mm
Coil pitch: 30mm

<Third heat transfer tube>
Inner diameter D ₃ 2mm
Total length L ₃ 4m
Equivalent length Le ₃ 4.5m
Overall shape Rectangular wave shape
Width of one rectangle: 10mm
Length of one rectangle: 20mm

  In FIG. 4, an example of the positional pressure change of the emulsified dispersion in the 1st-3rd control parts 23-25 (1st-3rd heat exchanger tube 29-31) of the multistage pressure temperature control apparatus 9 is shown. As shown in FIG. 4, the pressure of the emulsified dispersion decreases stepwise or gradually in the multistage pressure and temperature control device 9, and atmospheric pressure is generated at the outlet of the third control unit 25 (third heat transfer tube 31). Or it is almost atmospheric pressure. In this way, in the multi-stage pressure and temperature control device 9, the pressure of the emulsified dispersion is lowered stepwise or gradually and no sudden or instantaneous pressure drop occurs, so that the emulsified dispersion is removed from the emulsified dispersion production system S. No bubbling occurs in the emulsified dispersion when discharged to the outside. Moreover, the temperature of the emulsified dispersion discharged from the emulsified dispersion production system S to the outside can be preferably controlled. For this reason, it is possible to improve the quality of the emulsified dispersion as a product without substantially using a surfactant, and to reduce energy loss and increase energy efficiency.

  The multi-stage pressure and temperature control device 9 can set a required back pressure for the first and second emulsification dispersing devices 5 and 7, that is, a back pressure that can prevent the occurrence of bubbling. Can be reduced to a pressure at which bubbling does not occur even if the pressure is gradually reduced or gradually released to the atmosphere. At that time, the pressure reduction degree of the back pressure or the back pressure is preferably obtained by combining the inner diameter or the corresponding inner diameter of the first to third heat transfer tubes 29 to 31 with the total length (pipe length) or the corresponding length and the overall shape. Can be handled with a high degree of freedom.

  In this emulsified dispersion production system S, water or other various medium liquids (for example, methanol, ethanol, or an aqueous solution thereof) can be used, and these medium liquids are emulsified and dispersed in a critical state. The material may be emulsified and dispersed. For example, when the medium liquid is water and the emulsified dispersion material is lecithin, which is a glycerophospholipid, the emulsified dispersion material may be emulsified and dispersed in the following steps.

  That is, first, a predetermined amount of water, lecithin, and other necessary additives are put into the mixed solution supply tank 1 and stirred with a stirrer (not shown), and macroscopically or macroscopically, water that is a medium solution is used. A mixed solution in which the fine particles of lecithin and additive are distributed almost uniformly is prepared. And this liquid mixture is supplied to the liquid mixture pressurization pump 4 by the pressure feed pump 2 via the heat exchanger 3 by predetermined flow volume. Here, the temperature of the mixed liquid is raised to a temperature of 374.2 ° C. or higher (for example, 400 ° C.), which is a critical temperature of water, which is a medium liquid, by the heat exchanger 3 and the mixed liquid pressurizing pump 4. The pressure is increased to a pressure equal to or higher than the critical pressure of 218.4 atm (for example, 1000 atm) to bring the mixed liquid into a critical state.

  Then, the mixed liquid in a critical state is supplied to the first emulsification dispersion device 5 and further to the second emulsification dispersion device 7. If necessary, a predetermined additive is added from the first and second additive supply devices 6 and 8. Since water as a medium liquid is in a critical state, a water-insoluble emulsified dispersion material such as lecithin is easily emulsified or dispersed in water. In such a state, the mixed liquid is jetted into the first emulsification dispersion device 5 and further into the second emulsification dispersion device 7 at a high speed, so that the water-insoluble emulsification dispersion material such as lecithin is made by a strong shearing force. Emulsification dispersion is promoted. For this reason, a water-insoluble emulsifying dispersion material such as lecithin can be emulsified and dispersed in water, which is a medium liquid, without using a surfactant.

  At that time, since the multi-stage pressure and temperature control device 9 applies a back pressure to the high-temperature / high-pressure mixed liquid or the emulsified dispersion in the first and second emulsifying and dispersing apparatuses 5 and 7, the first and second emulsifying and dispersing apparatuses. No bubbling occurs in 5 and 7. The emulsified dispersion discharged from the second emulsifying dispersion device 7 is cooled to a predetermined temperature (for example, room temperature) in the multistage pressure temperature control device 9 and gradually or gradually to a predetermined pressure (for example, atmospheric pressure). Depressurized. Since the emulsified dispersion is cooled in this manner and stepwise or gradually reduced in pressure, bubbling does not occur when discharged from the pressure temperature control device 9 or from the pressure temperature control device 9 to the outside. Thus, after carrying out emulsification dispersion by applying a shearing force to the mixed solution in a critical state, a final product can be obtained without causing bubbling while maintaining a good emulsification dispersion state.

  As described above, the emulsified dispersion production system using the multistage pressure and temperature control device according to the present invention is particularly useful for an emulsified dispersion requiring high shearing force, and is suitable for use in a homogenizer or the like.

  S emulsified dispersion production system, 1 liquid mixture supply tank, 2 pressure feed pump, 3 heat exchanger, 4 liquid mixture pressure pump, 5 first emulsion dispersion apparatus, 6 first additive supply port, 7 second emulsion dispersion apparatus , 8 Second additive supply port, 9 Multi-stage pressure and temperature control device, 11 Nozzle member, 12 Passage member, 13 Body portion, 14 First pore member, 15 Second pore member, 16 Third pore member, 17 1st pore, 18 2nd pore, 19 3rd pore, 20 Seal member, 21 Connection member, 23 1st control part, 24 2nd control part, 25 3rd control part, 26 1st mantle, 27 1st 2 outer sheath, 28 third outer sheath, 29 first heat transfer tube, 30 second heat transfer tube, 31 third heat transfer tube, 35 communicating member, 37 straight tube, 38 90 ° elbow.

Claims (8)

An emulsified dispersion is produced by emulsifying or dispersing the emulsified dispersion material in the medium liquid by applying a shearing force to a mixed liquid containing the medium liquid and a liquid or solid emulsified dispersion material that does not dissolve in the medium liquid. An emulsified dispersion manufacturing system comprising:
A liquid mixture supply apparatus for supplying a liquid mixture containing the medium liquid and the emulsified dispersion material;
A liquid mixture pressurizing apparatus that pressurizes and discharges the liquid mixture supplied from the liquid mixture supply apparatus;
The liquid mixture discharged from the liquid mixture pressurizing apparatus is received, and a jet flow of the liquid mixture is generated by converting the pressure energy of the liquid mixture into kinetic energy, and the shear force generated in the jet flow generates the above-mentioned An emulsifying dispersion device for emulsifying and dispersing the emulsified dispersion material in the mixed liquid into the medium liquid to generate and discharge the emulsified dispersion;
The emulsified dispersion discharged from the emulsifying dispersion device is received, the pressure of the emulsified dispersion is lowered, and the temperature of the emulsified dispersion is controlled, while a back pressure is applied to the emulsified dispersion in the emulsified dispersion device. With a multi-stage pressure and temperature control device,
Each of the multi-stage pressure and temperature control devices has an outer jacket through which a heat transfer medium flows and a heat transfer tube arranged inside the outer jacket and through which the emulsified dispersion flows. Having first to third control units arranged in series in order from the upstream side to the downstream side with respect to the flow direction,
The heat transfer tubes of the first to third control units are connected to each other in series,
The inner diameter, the overall length, and the overall shape of each of the heat transfer tubes of the first to third control units represent the pressure drop amounts of the heat transfer tubes in the first to third control units, respectively, ΔP ₁ , ΔP ₂ , ΔP ₃ is set so as to satisfy the relationship ΔP ₁ > ΔP ₃ > ΔP ₂ according to the flow rate and viscosity of the emulsified dispersion in each heat transfer tube,
The amount of pressure drop in each heat transfer tube is controlled mainly by the inner diameter and the corresponding length of each heat transfer tube and the flow rate of the emulsified dispersion in each heat transfer tube, and the first to third control units. The heat transfer medium is allowed to flow through each of the jackets to cool the temperature of the emulsified dispersion in the multistage pressure temperature control device to room temperature, and the supply temperature and flow rate of the heat transfer medium flowing through the jackets are adjusted to adjust each of the above-described heat transfer media. Production of an emulsified dispersion, wherein the temperature of the emulsified dispersion in the heat pipe is controlled to control the viscosity of the emulsified dispersion in each of the heat transfer pipes and the flow resistance of each of the heat transfer pipes. system.   The inner diameter, the overall length, and the overall shape of each heat transfer tube of the first to third control units are set so that the emulsified dispersion flows in a laminar flow in each heat transfer tube, respectively. The emulsified dispersion production system according to claim 1.   The inner diameter, the overall length, and the overall shape of each heat transfer tube of the first to third control units are set so that the emulsified dispersion flows in a turbulent flow in each heat transfer tube, respectively. The emulsified dispersion production system according to claim 1.   The heat exchanger which heats or cools the said liquid mixture is provided between the said liquid mixture supply apparatus and the said liquid mixture pressurization apparatus regarding the flow direction of the said emulsion dispersion liquid, It is characterized by the above-mentioned. The emulsion dispersion manufacturing system according to any one of -3.   The emulsification according to claim 4, wherein the mixed liquid supply device includes a mixed liquid pressure feeding pump that pressure-feeds the mixed liquid to the mixed liquid pressure device via the heat exchanger. Dispersion production system. The emulsifying dispersion apparatus, characterized in that it is constituted by first and emulsification dispersion device and a second emulsifying dispersion devices connected in series with each other, emulsified dispersion manufacturing system according to claim 1. A first additive supplying device for adding the first additive to the emulsified dispersion is attached downstream of the first emulsifying dispersion device, and the second additive is added to the emulsified dispersion downstream of the second emulsifying dispersion device. The system for producing an emulsified dispersion according to claim 6 , further comprising a second additive supply device to be added. The emulsified dispersion production system according to any one of claims 1 to 7 , wherein the medium liquid is water.

Images