WO2004016344A1

WO2004016344A1 - Minute air bubble-containing liquid matter and device for manufacturing the liquid matter

Info

Publication number: WO2004016344A1
Application number: PCT/JP2003/001228
Authority: WO
Inventors: Takeshi Nakajima
Original assignee: Aics Co., Ltd.
Priority date: 2002-08-16
Filing date: 2003-02-06
Publication date: 2004-02-26
Also published as: AU2003207251A1; JP2004074131A

Abstract

A device and a method for easily manufacturing liquid matter having stable minute air-bubbles of generally 10 μm or less in diameter provided as products or intermediate products useful for wide ranges of industrial technologies, life technologies, and safe technologies, the device wherein basically the combined treatment of magnetization, pressure fluctuation at high frequencies, shearing, and cavitation is performed for gas-liquid mixture, and gas and liquid forming the liquid matter is properly selected to produce various types of useful products.

Description

Description Microbubble-containing liquid and its manufacturing equipment

The present invention relates to a microbubble-containing liquid material as a useful product or an intermediate product in various technical fields, and an apparatus for producing the same. Background art

Many proposals have been made for techniques for creating microbubbles in liquids, and in recent years, there has been particular interest in water quality improvement and bathtub-related fields. The main ones of these methods are roughly classified as follows.

(1) A substance in which a gas is dissolved excessively in a liquid by applying pressure, etc., is led to a reduced pressure state, and the excess dissolved component is precipitated as a gas (bubbles). The amount of bubbles cannot exceed the amount of excess dissolved.

(2) A substance that releases a small amount of gas into a liquid. As the discharge port, a microporous plate, a mesh, a polymer foam having open cells, a sintered body, or the like is used. Since the diameter of the generated bubble is much larger than the diameter of the emission port, it is practically difficult to create a microbubble of Ι Ιμπι or less.

(3) A gas is released into the liquid, and the generated gas-liquid mixture is given a motion such as jetting or swirling to break and refine bubbles by the shear force between the liquid and the liquid, or the gas-liquid mixture. A device that crushes and miniaturizes bubbles by colliding with vessel walls and projections. The bubble diameter by this method is usually assumed to be 400 to 500 μπι. In addition, a rotating cylinder is installed in the fixed cylinder, and gas-liquid mixing There is also a proposal to introduce a compound to make the bubbles finer (Japanese Patent Laid-Open No. 5-146667) or a proposal to add a magnetic field effect to this (Japanese Patent Laid-Open No. 11-104646). Neither force is said to be able to consistently produce bubbles with a diameter of 10 m or less.

(4) Devices that use vibration such as ultrasonic waves. This involves breaking and miniaturizing bubbles with the liquid pressure due to vibration, and creating a negative pressure part locally due to the vibration of the solid at the liquid-solid interface or the relative velocity difference between the liquids at the liquid-liquid interface. However, there are some that generate microbubbles by the coalescence of the decompressed air bubbles and the gas generated here. The former is an efficient problem (the effective bubble diameter is limited by the frequency because of the use of resonance). The bubble diameter obtained in the latter does not reach 10 μΐη or less as a stable one.

(5) When any two of the above methods are used in combination, for example, in the combined effect of stirring by the blades and generation of depressurized air bubbles in the negative pressure part generated in the recirculating liquid flow accompanying the stirring, Sufficient results have not been obtained for the production of bubbles with a diameter of less than 10 m. It is also difficult to find proposals that combine three or more methods. Furthermore, in the conventional proposals, little attention has been paid to the stability of generated bubbles, and in fact, microbubbles that can maintain a stable state for a long time without using a surfactant have been obtained. Absent. For this reason, a liquid material containing stable microbubbles having a diameter of 10 μππι or less, which does not contain impurities such as activators, is used in a gas / liquid or gas / gas reaction process, an organic / inorganic foaming process, and the like. Despite its widespread application to industrial technology, environment mainly involving oxygen supply, living technology for agriculture, aquaculture, food, etc., and safety technology for foam fire fighting, etc., it has not been practically used. Disclosure of the invention

The present invention solves the above-mentioned problems in the prior art, and an apparatus for easily producing water and other liquids containing stable microbubbles having a diameter of about 10 μm or less for a long period of time. It is intended to provide various useful microbubble-containing liquids obtained.

In the present invention, as one of means for obtaining the target microbubble-containing material, the gas-liquid mixing device according to claims 13 to 20 (hereinafter referred to as a basic device) or, if necessary, a combined use thereof Use the combination of the additional device and the basic device (claims 21 and 22; hereinafter, this device). The microbubble-containing liquid according to claim 1 is a liquid in which stable bubbles having a diameter of about 10 μm or less are contained in the liquid, and the production method is not particularly limited. By using this device, it is possible to reliably manufacture. As the liquid, a single liquid or a mixture of plural liquids can be used depending on the purpose, and one or more kinds of additives can be contained therein. As a form of the mixture and the additive-containing substance, a sol form can be used in addition to a solution. A single gas or a mixture of multiple gases can be used as the gas forming the bubble depending on the purpose, and by controlling the temperature appropriately in the production process, a gas that does not exist as a gas at room temperature can be used. It can be used after evaporation. In addition to normal gases, aerosol forms can also be used. The type of gas and liquid, and the ratio of both, are arbitrarily selected according to the purpose.

The liquid containing microbubbles described in claim 2 is a liquid in which the microbubbles of claim 1 are mainly formed by air, and the production method is not particularly limited. Make sure You can do it. The mixing ratio of air and liquid is arbitrarily selected according to the purpose.

The liquid containing microbubbles according to claim 3 is a liquid containing water or water containing additives and containing stable air bubbles mainly composed of air having a diameter of about 10 m or less. Although not limited, for example, by using the present apparatus, it is possible to reliably manufacture. The mixing ratio of air and water or water containing additives is arbitrarily selected according to the purpose. The microbubble content is more permeable than water in normal conditions. Although the reason for this has not been clarified yet, it is possible to think that the clustering of water is subdivided as a result of the magnetization treatment of water by this device. Also, as the gas-liquid contact area increases with the miniaturization of bubbles, oxygen is sufficiently dissolved in water. The fragmentation of water clusters is also thought to favor oxygen dissolution.

The liquid containing microbubbles described in claim 4 is manufactured when the present device or the basic device is used for the purpose of purifying a natural environment or the like. The properties of the liquid material are the same as those described in claim 3. The mixing ratio of air and water is arbitrarily set according to the purpose. For example, a ratio of 4 to 10 water to 1 air is adopted.

In the liquid containing microbubbles described in claim 5, the gas forming the microbubbles in claim 1 is mainly hydrogen, and the production method is not particularly limited. By using, it is possible to reliably manufacture. In this case, the mixing ratio of liquid and gas-liquid is selected according to the purpose.

The liquid containing microbubbles described in claim 6 is the fine bubble-containing liquid described in claim 1. JP2003 / 001228 The gas forming small bubbles is mainly oxygen, and the production method is not particularly limited. For example, by using the present apparatus, the production can be surely performed. In this case, the mixing ratio of liquid and gas-liquid is selected according to the purpose.

The liquid containing microbubbles according to claim 7 is a liquid in which the gas forming the microbubbles according to claim 1 is mainly nitrogen. The production method is not particularly limited, but for example, by using the present apparatus, the production can be surely performed. In this case, the mixing ratio of liquid and gas-liquid is selected according to the purpose.

In the liquid containing microbubbles described in claim 8, the gas that forms the microbubbles described in claim 1 is mainly carbon dioxide. The manufacturing method is not particularly limited, but for example, by using the present apparatus, it is possible to reliably manufacture. In this case, the mixing ratio of liquid and gas-liquid is selected according to the purpose.

In the liquid containing microbubbles described in claim 9, the gas that forms the microbubbles described in claim 1 is mainly carbon dioxide, and water or water containing an additive is selected as the liquid. . The production method is not particularly limited, but for example, by using the present apparatus, the production can be surely performed. The gas-liquid mixing ratio in this case is selected according to the purpose.

In the liquid containing microbubbles described in claim 10, the gas forming the microbubbles described in claim 1 is mainly ozone. The manufacturing method is not particularly limited, but for example, by using the present apparatus, it is possible to reliably manufacture. In this case, the mixing ratio of liquid and gas-liquid is selected according to the purpose. T JP2003 / 001228 The microbubble-containing liquid according to claim 11 is mainly composed of ozone, and water or water containing an additive is selected as the liquid. Things. The production method is not particularly limited, but for example, by using the present apparatus, the production can be surely performed. The gas-liquid mixing ratio in this case is selected according to the purpose.

The liquid containing microbubbles according to claim 1 or 2 is a liquid in which the gas forming the microbubbles according to claim 1 is mainly a single type or a plurality of types of alcohol vapors, and fats and oils are selected as the liquid. . The production method is not particularly limited, but for example, by using this apparatus, the production can be surely performed. In this case, the mixing ratio of gas and liquid is selected according to the purpose. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a sectional view showing an example of a basic device according to the present invention.

FIG. 2 is a cross-sectional view showing an example of an arrangement of a stirring rod.

FIG. 3 is a sectional view showing an example of a fixed cylinder and a rotary cylinder of the basic device. FIG. 4 is a conceptual diagram showing an example of the combination of the basic device and the additional device in the present invention. BEST MODE FOR CARRYING OUT THE INVENTION

First, the basic device described in claims 13 to 20 will be described in detail with reference to the drawings.

In the basic device, a rotating cylinder 25 driven by a motor 23 via a rotating shaft 24 is arranged inside a fixed cylinder 21, and the other end of the rotating shaft is connected to a bearing 26. Supported. A liquid suction port 27 and a suction port 29 are provided at one end of the fixed cylinder 21, and a communication chamber 31 is provided at the other end for communicating the fixed cylinder 21 with the outside. Is done. The communication room is composed of an upper plate 31 a and a lower plate 31 b connected by connecting columns 34. A gas-liquid delivery device 33 driven by a motor 23 is provided in the communication chamber 3 1, and the gas-liquid delivery device 3 3 is operated to send the gas-liquid in the communication chamber 3 1 to the outside, thereby providing communication. The inside of the chamber 31 and the inside of the fixed cylinder 21 become negative pressure, and liquid and gas are introduced into the fixed cylinder 21 from the liquid suction port 27 and the suction port 29, respectively. Various types of gas-liquid delivery devices can be used according to the purpose, for example, a rotary wing. On the inner peripheral surface 41 of the fixed cylinder 21 and the outer peripheral surface 43 of the rotating cylinder 25, a plurality of embankment-shaped ridges each having a substantially trapezoidal cross section in the length direction are installed. A substantially inverted trapezoidal groove 49 or groove 51 is formed between 45-45 or between the ridges 47-47. The liquid and the gas introduced by the negative pressure pass through the space 52 formed by the inner peripheral surface 41 of the fixed cylinder 21 and the outer peripheral surface 43 of the rotating cylinder 25 to the connecting chamber side. Be guided. The inclination angles a and b of the inclined surfaces 45 'and 47 in the projections 45 and 47 are determined as necessary, but are usually in the range of 20 to 60 degrees.

Permanent magnets 35 and 37 are installed on the bottom of grooves 49 and 51. The permanent magnets 35 and 37 can be installed in a combination such as the top surface of the protrusion 45 and the bottom surface of the groove 51 or the bottom surface of the groove 49 and the top surface of the protrusion 47 as necessary. . In any case, the depth d of the groove in the rotating cylinder 25 is set to be larger than the depth c of the groove in the fixed cylinder 21.

The material of the permanent magnets 35 and 37 is selected as necessary, but for example, those containing neodymium or zirconium as a main material are suitable for the purpose of the present invention. On the downstream side of the liquid suction port 27 and the suction port 29 in the fixed cylinder 21, a stirrer rotated by a motor 23 is installed, and a check valve 60 is provided accordingly. The stirrer has, for example, a structure in which stirrers 61, 63 are arranged as a pair of upper and lower stirrups on each of opposing surfaces of two disks 65, 67 fixed to the rotating shaft 24, or disks 65, 6 The structure is such that any one of the stirring rods in 7 is omitted. A plurality of stirring rods are installed as needed, for example, at positions such as 69 and 71. The whole or a part of the stirrers is preferably provided with a magnetic field generating means and / or an ion generating means, and the magnetic field generating means may be the same as the ion generating means, for example, by installing a permanent magnet. For example, the purpose can be achieved by installing special ceramics or ionic ceramics composed of tourmaline and dielectric ceramics or other appropriate ion generators.

The process of obtaining a stable liquid material containing microbubbles by the basic device is still not well understood scientifically, and it is not preferable to be bound by any theory. It is formed mainly by air, and when the liquid is water, the following can be considered.

(A) The water and air introduced into the fixed cylinder 21 from the liquid suction port 27 and the suction port 29, respectively, are mixed by a stirrer to form a liquid material containing air bubbles, and the liquid is mixed with the fixed cylinder 21. It enters the passage formed between the rotary cylinders 25. When the stirring device is provided with a magnetic field generating means, water passes through the magnetic field and is given a new property, V, which is advantageous for miniaturization of bubbles. Although the effect of magnetic fields on water is recognized as a phenomenon, there are many parts that have not been clarified theoretically yet, but water as a conductive substance passes through the magnetic field. As a result, an electromotive force is generated, and the water molecules are maintained at a high level and in an energy state even before the electrolysis or the electrolysis, and as a result, the water cluster is fragmented or the internal structure of the cluster is changed. The view that a new property is given is influential. In this device, the magnetic flux moves at high speed with the rotation of the permanent magnet installed in the rotating cylinder, so that the relative position of water and the magnetic field is smaller than when water flows in a magnetic field as in a normal water magnetizer. The speed is much higher, which is advantageous for generating electromotive force. When an ion generating means is added to the stirrer, the generation of electromotive force is increased by increasing the conductivity of the liquid.

(B) The radial width of the cross section of the liquid passage formed between the fixed cylinder 21 and the rotary cylinder 25 is the distance between the tops when the tops of the projections provided on 21 and 25 face each other. It fluctuates regularly as the rotating cylinder rotates, with the narrowest and the widest part between the groove bottoms at that time. The liquid containing bubbles introduced into this passage is spiraled by a combination of a violent movement in the circumferential direction due to the rotation of the rotating cylinder and a slightly slower movement toward the sending means due to the negative pressure provided by the sending means 33. It moves to the communication room 31 side gradually while violently rotating along the trajectory. Meanwhile, in the liquid containing bubbles, abrupt changes in the internal pressure according to Bernoulli's theorem occur at a high frequency due to the change in velocity due to the change in the width of the passage, thereby causing significant fragmentation of the bubbles. If the rotation speed of the rotary cylinder is sufficiently high and the frequency of the pressure fluctuation exceeds the threshold value, cavities are generated in the negative pressure portion in the liquid, thereby promoting the generation of microbubbles.

(C) Further, the liquid containing air bubbles is continuously provided in the fixed cylinder and the rotating cylinder due to the collision with the projection provided on the fixed cylinder and the rotating cylinder while moving in the above passage. Due to the deeper groove on the fixed cylinder side Shearing is caused by the velocity difference between the inner and outer fluids, which also causes fragmentation of air bubbles.

(D) Further, the high-frequency fluctuation of the liquid pressure accompanying the rotation of the rotating cylinder causes resonance of the fixed cylinder wall at higher harmonics, and the bubbles are further miniaturized by cavitation generated at the wall-liquid interface.

Although the above steps (A) to (D) may individually correspond in principle to the microbubble manufacturing means of the prior art, in the present basic apparatus, these steps are performed by a simple apparatus. Sequentially or simultaneously, the introduced gas-liquid mixture is constantly affected by it during a long, descending spiral. As a result, the bubbles in the liquid containing fine bubbles delivered from the basic device become fine and extremely stable.

The manufacturing apparatus described in claim 22 is obtained by adding an additional device to be used together as necessary to the above-described basic device (hereinafter referred to as the present device). For some purposes, only basic equipment may be used. Also, in order to ensure the miniaturization of air bubbles, use a plurality of basic devices connected in series or use a method of recycling the microbubble-containing liquid produced by the basic device back to the basic device. It is also possible.

In the present device, the main additional devices used in combination with the basic device 78 are as follows, in addition to the additive supply device described in claim 21.

(a) A gas storage tank 72 required for bubble formation is installed and connected to the basic device intake port 81 via a flow rate control device 80. When bubbles are formed by a plurality of gas mixtures, the required number of storage tanks 72 are installed for each gas, and each is connected to a plurality of basic device intake ports via a flow rate control device 80. Each storage tank, if necessary, or if necessary, via a flow rate control device 80 It is connected to one mixing device 73, and the mixing device and the basic device intake port 81 are connected via a flow rate control device 80. When vapor of liquid at normal temperature is used for bubble formation, a storage tank for the liquid and a heated vaporizer are installed in place of the gas storage tank 72, and the flow rate control device is installed while taking appropriate temperature holding means. Connected to the basic device inlet or to the mixing device. If necessary, install an air supply pump 79 at an appropriate place in the gas passage.

(b) Install a necessary liquid storage tank 75 and connect it to the basic device suction port 82 via the flow rate control device 77. When using a mixture of multiple liquids, install the required number of storage tanks 75 for each liquid, and connect them to a plurality of basic device suction ports via flow rate control devices 77 If necessary, each storage tank 75 is connected to one mixing device 74 via a flow control device 77, and the mixing device and the basic device suction port 82 are further connected to a flow control device. 7 Connect via 7. Install a liquid feed pump 76 at an appropriate place in the liquid feed path as needed.

(c) The communication chamber 83 has an airtight structure, and a delivery port 84 is provided at one end of the communication chamber. If it is necessary to store the liquid containing microbubbles, a product storage tank 85 is installed and connected to the outlet.

(d) The rotation speed of the rotating cylinder of the basic device is made variable as necessary.

(e) If necessary, the basic device delivery means is driven by a separately provided motor, and the suction speed of gas and liquid by negative pressure is made independent of the rotation speed of the rotary cylinder.

(f) If necessary, install an oscillator plate on one or both of the bottom of the fixed device groove and the bottom of the rotating tube groove to improve the cavitation generation effect. By appropriately selecting the material and shape of the permanent magnet, the function of the oscillation plate can be added. May be added.

(g) If necessary, add a temperature control / holding mechanism including heat insulation treatment to the whole or part of this device.

The scale of this equipment can be set in a wide range from small and portable to fixed facilities.

Next, an embodiment of a microbubble-containing liquid that can be produced using the above-described apparatus will be described.

The microbubble-containing liquid material in the present invention may be produced by a gas / liquid or gas / gas reaction process, an industrial technology such as an organic / inorganic foaming process, an environment mainly involving oxygen supply, a living technology such as agriculture, aquaculture, food, etc. It can be used in a wide variety of forms, including fire extinguishing and other safety technologies. The various forms are shown below.

Embodiment in Industrial Technology

(K0) In a gas / liquid reaction, when the reaction element gas is supplied to the reaction site as a gas-liquid mixture, bubbles are mainly formed by the gas that is the reaction element of the gas-liquid reaction. Use the resulting liquid containing microbubbles. The liquid can be supplied from a suitable storage container or directly from the apparatus. Bubbles in the liquid material are smaller than those conventionally obtained practically, and have a large gas-liquid contact area, which is advantageous for the progress of the reaction. The liquid which is one of the constituents of the liquid containing microbubbles is selected as necessary, and handling can be performed safely and easily by appropriate selection even when the gas has high reactivity. In some cases, by using a liquid that is a reaction element of the gas-liquid reaction, the produced liquid containing microbubbles is directly led to an external reaction vessel, and a catalyst or heating or the like is performed. It is possible to cause a reaction by adding an action, or to allow a part or all of a gas-liquid reaction to proceed in the present apparatus. If necessary, add a temperature control function to all or part of this device. In the gas / gas reaction, when each gas that forms an element of the reaction is introduced into the reaction vessel as a gas-liquid mixture, the gas is formed by each reaction element gas that can be produced by a plurality of the present apparatuses. Using a plurality of microbubble-containing liquids containing microbubbles, a reaction is caused by the action of a catalyst or heating. Even in this case, by selecting an appropriate liquid, handling can be performed safely and easily even when the reaction element gas has high reactivity. In addition, in such gas / liquid or gas / gas reaction, when a liquid containing microbubbles containing stable microbubbles having a diameter of about 1 μμΟη or less that can be produced by this apparatus is used, water or an additive may be used as the liquid. When water containing water is selected, it is considered that the new property added to water by the present device has an advantageous effect on the reaction.

(K1) In gas-liquid reactions using hydrogen as one of the reaction elements, such as hydrogenation, catalytic hydrogenation, and hydrocracking, stable microbubbles with a diameter of approximately 1 μm or less that can be produced by this device are mainly hydrogen. The liquid containing microbubbles formed by the reaction is used as a hydrogen source for the reaction. Other remarks are the same as described in (K0) above.

(K2) In a gas-liquid reaction using oxygen as one of the reaction elements such as oxidation, stable microbubbles with a diameter of about 10 μ μη or less that can be produced by this device are mainly formed by oxygen. The liquid containing microbubbles is used as the oxygen source for the reaction. The other special notes are the same as those described in (Κ0) above.

(Κ3) In a gas-liquid reaction using carbon dioxide as one of the reaction elements, stable microbubbles with a diameter of about 10 m or less that can be produced The liquid containing microbubbles formed by the acid gas is used as a carbon dioxide gas source for the reaction. Other remarks are the same as those described in (K0) above.

(K4) In a gas-liquid reaction such as a ester exchange reaction in which a gas-phase alcohol is one of the reaction elements, stable microbubbles having a diameter of about 10 / ΐη or less that can be produced by this device are mainly generated by alcohol vapor. The microbubble-containing liquid formed is used as a source of alcohol for the reaction. Other special notes are the same as those described in (K0) above.

(K5) For the decomposition of PCBs and dioxins (hereinafter referred to as DXN), stable microbubbles with a diameter of about 10 μΐη or less, which can be produced by this device, are mainly formed by air or ozone, and the liquid is water. Alternatively, use a liquid containing microbubbles, which is water containing additives. Force to add the liquid containing microbubbles to the processing target containing PC or DXN and agitate, or introduce water, air and the processing target into this device at the same time, and process while producing the liquid containing microbubbles. By contacting the object, the PCB or DXN can be decomposed. If necessary, the effect can be further ensured by using titanium oxide and other catalysts as a supplement. In some cases, the liquid containing the object to be treated and the air may be directly introduced into the device to perform the treatment. Other special remarks are as described in (K0) above.

(K6) When a mixture of fuel gas and air or oxygen is supplied to the liquid to be heated in the form of bubbles in a gaseous fuel-in-liquid combustion device, the diameter can be manufactured with this device, approximately 10 μιη or less. A liquid containing microbubbles in which stable microbubbles are mainly formed by a mixture of fuel gas and air or oxygen is used. The liquid material is stable and does not emit Highly efficient ignition and combustion can be performed. Other special remarks are as described in (K0) above.

(K7) When hydrogen peroxide and oxygen are introduced as bubbles into water to produce a reaction in the production of hydrogen peroxide, a stable product with a diameter of about 10 μππι or less that can be produced by this device is used. A liquid material containing microbubbles in which microbubbles are mainly formed by oxygen and a liquid material containing microbubbles in which microbubbles are mainly formed by hydrogen are used. The bubbles in the liquid material are finer than those conventionally used, which is advantageous for the progress of the reaction, and are stable and can be handled safely and easily. Other special remarks are as described in () 0) above.

(Κ8) When a bubble layer is formed between the bottom of the ship and water to reduce the running resistance of the ship, stable microbubbles with a diameter of about 10 μm or less that can be produced by this device are mainly composed of air. Use the liquid containing microbubbles that is formed as a result. Since the liquid material is stable and does not float or diffuse, a stable bubble layer can be formed. Other special notes are as described in (K0) above.

(K9) In a salt solution, a gas is introduced in the form of bubbles that forms a sparingly soluble salt by combining with the metal ions that constitute the salt when the salt is dissolved in water, and the salt is precipitated on the solid surface immersed in the solution In this case, a liquid containing microbubbles, which can be produced by the present apparatus and is mainly composed of stable microbubbles having a diameter of about 10 m or less mainly formed by the gas, is used. When it is required that the precipitates be formed into a uniform film, for example, when an artificial pearl is produced by repeatedly depositing a calcium carbonate thin film with an aqueous solution of calcium hydroxide and carbon dioxide, the bubbles used are Need to be fine and such The liquid containing microbubbles by the present apparatus is suitable for the purpose. Other special remarks are as described in (K0) above.

(K10) When water containing bubbles is used for washing, stable microbubbles having a diameter of about 1 μμπι or less, which can be produced by this device, are mainly air, oxygen, hydrogen, ozone, and rare gases. Or a liquid containing microbubbles formed by one kind of gas or a mixture of two or more kinds of gases. The liquid material has a higher permeability and a smaller bubble diameter than those conventionally used, so that a large detergency can be obtained without using a cleaning agent. In addition, since the equipment is simple, there are few restrictions on the place of use, and continuous supply is easy, it can be applied to a wide range of objects from structures to photomask substrates.

(L0) When a gas-liquid mixture is used as the foaming element in the production of the foamed material, use a stable microbubble-containing liquid with a diameter of about 10 μm or less that can be produced by this device. For this purpose, depending on the nature of the organic or inorganic substance serving as the skeleton, a. Select the organic substance or inorganic substance before the start of polymerization or hardening as a liquid, and use this device to After polymerization or curing as a substance, b.Select an appropriate liquid substance that is compatible with the organic substance or inorganic substance as the liquid, and mix the liquid substance containing microbubbles with the organic substance or inorganic substance with this device. Either curing the polymerization or resin, or c. Selecting the organic or inorganic substance in the form of a sol as the liquid and curing it using the post-sol / gel reaction as a liquid containing microbubbles with this device used. The foamed material according to the present invention can contain various kinds of gases or a mixture of plural kinds of gases depending on the purpose in the minute closed cells, and the individual cells are finer than those conventionally used practically. The porosity is easy and accurate depending on the amount of gas introduced during the production of liquid containing microbubbles. It is characterized by being controlled by.

(L1) In the production of a polymer foam material, in a microbubble-containing liquid material containing stable microbubbles having a diameter of about 10 μm or less, which can be produced by this device, micro bubbles in which bubbles are mainly formed by air Use a liquid containing bubbles. Other special remarks are as described in the previous section (L0).

(L2) In the production of the polymer foam, the liquid containing microbubbles in which the bubbles described above are mainly formed by nitrogen is used. The foamed material is suitable for use in cases where a fire protection function such as blocking the spread of fire in the duct is required. Other special remarks are as described in (L0) above.

(L3) In the production of a polymer foam material, a liquid containing microbubbles in which the bubbles described in the preceding paragraph are mainly formed by carbon dioxide is used. The foamed material is suitable for use when a fire prevention function such as blocking fire in a duct is required. Other special remarks are as described in (L0) above.

(L4) In the production of a polymer foam, a liquid containing microbubbles in which the bubbles described in the preceding paragraph are mainly formed by a mixed gas of nitrogen and carbon dioxide at an appropriate ratio is used. When the foam is spread in a vertical duct or the like, nitrogen spreads from below, and carbon dioxide gas spreads from above. Other remarks are as described in (L0) above.

(L5) In the production of foamed concrete, a liquid containing microbubbles containing stable microbubbles of approximately 10 m or less, which can be produced by this device, is a liquid containing microbubbles whose bubbles are mainly formed by air. Use something. Other special remarks are as described in (L0) above.

(L6) A sol containing silicate or other dispersoid is hardened by sol / gel reaction. In the case of producing a transparent inorganic material by converting into a liquid, the bubbles are mainly formed by air in the liquid containing microbubbles containing stable microbubbles having a diameter of about 10 μπι or less, which can be produced by this apparatus. Use a liquid containing microbubbles. Since the bubbles are very small, transparency is not impaired, and a transparent material that is lightweight and has excellent heat insulation and heat resistance can be obtained. Other special remarks are as described in (L0) above.

Embodiment in Life Technology

(M0) In various fields related to daily life, liquids containing microbubbles containing stable microbubbles with a diameter of about 10 μππι or less, which can be produced by this device, mainly as a supply source of oxygen or active oxygen, Water or water containing additives, and a liquid containing microbubbles in which microbubbles are mainly formed by air, oxygen, or ozone or a mixture of two or all of them is used. As described above, in the liquid substance, as a result of adding new properties to the water by the present apparatus, a favorable phenomenon such as a sufficient dissolution of oxygen or ozone, an increase in permeation force, and the like occur, and these are stably produced. The feature is that it is retained. In the implementation, appropriate containers and supply equipment can be used to deal with the situation of the target, and large-scale targets can be supplied directly and continuously from this device.

(Ml) The microbubble-containing liquid described in (M0) above is used for watering a plant. The liquid material permeates the ground more easily than ordinary water, and a sufficient amount of oxygen or active oxygen is stably retained and released gradually, so that the oxygen or activity of the plant can be increased quickly and for a long time. Oxygen can be supplied. This has a remarkable effect on healthy plant growth and disease prevention and recovery. Water used as a liquid contains trace elements and other additives that are beneficial to plants. In addition, it can be more effective. See the previous section for other special notes

(M0) As described.

(M2) When bubbles are introduced into the hydroponic solution for the purpose of supplying oxygen in hydroponics, use the liquid containing microbubbles described in (M0) above. Water used as a liquid can also be made more effective by adding trace elements and other additives beneficial to plants. Other special remarks are as described in (M0) above.

(M3) When air, oxygen, ozone, etc. are supplied into water in the form of air bubbles for the purpose of suppressing metabolism and sterilization of algae and fungi for water purification, the liquid containing microbubbles described in (M0) above Use When the liquid material is supplied into the target water by an appropriate method, unlike normal air blowing etc., bubbles do not float or diverge, expand in a layered manner covering the water bottom, and due to strong osmotic force It exfoliates and accumulates adhering substances on the bottom of the water, and exhibits a water purification function for a long time due to the slow release and stable supply of oxygen or active oxygen. It is possible to provide a simple and highly efficient purifying action for water quality purification of ponds and rivers by using only basic equipment. That is, the basic device is installed by an appropriate means such as a gantry so that the liquid supply port is immersed in water, and the basic device is operated while supplying air from above the water surface to the intake port using a soft vinyl tube or the like. By releasing microbubbles into the water, a water purification function completely different from that of the conventional air blowing is exhibited as described above. At this time, appropriate microorganisms and / or chemicals can be introduced as additives into the liquid supply port by a simple auxiliary mechanism to add and improve functions such as decomposition or coagulation of submerged sludge. In addition, when the depth is large, such as underwater, the basic device or this device can be installed by means such as hanging from a mooring object such as a buoy or raft. It can be kept at an appropriate depth below the water surface and used to control pests such as red tide. Other special notes are as described in (M0) above. For this embodiment, some experiments were conducted to confirm its usefulness. The embodiment will be described below.

Example 1: A basic device having a fixed cylinder with a diameter of 200 mm and a length of 700 mm was immersed in a water tank, and the volume ratio of air and water was reduced to about 1 by driving a motor at 1 HP at 1500 rpm. : Introduced at a ratio of 4 and operated for 1 hour while circulating the water in the water tank. Then, the fine bubbles generated in the lower part of the tank were collected and the diameter of the bubbles was measured by laser light scattering. Approximately 40% of those with a diameter of 5 to 10 μΐη and about 20% of those with a diameter of 2 to 3 m, and it was observed that this state lasted for more than 20 days in a closed container.

Example 2: area 1 50 m ² in the closed pond depth lm, using diameter 15 Omm fixed circular cylinder, length 50 Omm, the basic apparatus one drive motor 0. 5 HP, 15 00 r pm , It was installed in water and operated continuously for 3 weeks in the same manner as in Example 1, and the following results were obtained.

(1) Before the test started, the pond water became dark green and had a bad smell.It was difficult to recognize a white object at a depth of 50 cm, and sludge with a thickness of about 10 cm was deposited on the bottom of the pond. Was.

(2) Five hours after the start of the test, a thin oily film began to float on the water surface.

(3) One week after the start of the test, substances that seem to be pond bottom sludge disperse and float on the water surface, the transparency of the water increases, and the white bubble layer expands so as to crawl on the water bottom centering on the basic device. At the same time, schools of fry began to be seen swimming near the surface of the water.

(4) Two weeks after the start of the test, the odor almost disappeared. (5) Three weeks after the start of the test, the suspended matter described in (3) almost disappeared, and the original bottom of the pond without a sludge layer began to be seen.

(6) Table 1 shows the results of water quality analysis before and after the test.

table 1

(7) Most of the suspended matter before the start of the test was cyanobacteria, and no diatoms were observed. However, phytoplankton analysis after 3 weeks showed a remarkable increase in diatoms. Table 2 shows the results of the analysis.

Table 2

Class name Cell count

¾¾ Oscillatoria sp. 280 Dinoflagellate Gimnodinium sp. 3,800 Note 1 ¾ Cyclotella spp. 1,879,200

Others 80,680 Green algae Pediastrum simplex 300

Scendesmus acutus 400 It is considered that these diatoms contribute to the occurrence of fry. Example 3: The same experiment as in Example 2 was performed for 60 days in a pond with an area of 45 ha and a depth of 3 m. As a result, the head layer at the bottom of the pond with an average thickness of 50 cm before the start was the entire pond. And disappeared. In addition, the hydrogen sulfide concentration near the installation point of the equipment and at a point 70 m from the installation point decreased remarkably 7 days after the start of the test as shown in Table 3.

Table 3

(M4) Use the liquid containing microbubbles described in (M0) above for breeding and breeding fish. For the same reason as described in the previous section, it is possible to easily and stably supply oxygen for a long period of time, which has an effective effect on the growth of fish and prevention and recovery of disease. Other special notes are as described in (M0) above.

(M5) The liquid containing microbubbles described in (M0) above is added to water for the purpose of maintaining water quality. The above-mentioned oxygen supply function can prevent bacterial growth and maintain good water quality. Other special remarks are as described in (M0) above.

(M6) For maintenance of the inner surface of the pipe, use the liquid containing microbubbles described in (M0) above, in which bubbles are mainly formed by air. The aforementioned penetrating power and oxygen supply effect have the effect of removing scale from the inner surface of the pipe, and in the case of iron pipe, removing red and converting to stable black. Other special items are as described in (M0) above. Embodiment of safety technology

(NO) In the field of safety technology, use microbubble-containing liquids containing stable microbubbles with a diameter of about 10 m or less that can be produced by this device as fire extinguishing agents or neutralizing / absorbing agents. Since various kinds of gases and liquids forming the liquid material can be used, these can be selected according to the purpose and used as an efficient means. Since it is a liquid containing bubbles, it does not diffuse like a gas and has high spreadability compared to ordinary liquids and stays locally, so fire extinguishing or neutralization / absorption efficiency is high, and Even if this gas is harmful to the human body, the safety is improved compared to the use as a normal gas. The liquid material can be easily used according to the target situation by using an appropriate container and a supply device, and is supplied directly from the device as needed.

(N1) As the fire extinguisher, use is made of the liquid containing microbubbles described in (NO) above, in which bubbles are mainly formed by carbon dioxide gas. Since the liquid is water containing microbubbles of carbon dioxide gas, it has a high fire extinguishing function, with a water-blocking effect and a combustion-product temperature-lowering effect in addition to the carbon dioxide gas-blocking effect. Other special remarks are as described in the preceding paragraph (NO). Industrial potential

According to the production method of the present invention, it is possible to easily and widely produce a liquid material containing stable microbubbles having a diameter of about 1 Om or less, and as a result, industrial technology, living technology and safety technology can be produced. Many useful or intermediate products are provided in each area.

Claims

Scope of request A rotating cylinder that is rotated by a motor is installed inside the fixed cylinder without using a surfactant, and a liquid suction port and an intake port are provided near one end of the fixed cylinder, and the fixed cylinder is fixed. A communication chamber communicating with the outside of the fixed cylinder is provided at the other end of the cylinder, and a sending means rotated by the motor is provided in the communication chamber, and the sending means sends the liquid in the communication chamber to the outside. Negative pressure is applied to the communication chamber and the inside of the fixed cylinder so that liquid and gas are introduced into the fixed cylinder from the liquid suction port and the suction port, respectively. By forming a plurality of ridges each having a substantially trapezoidal cross section on the peripheral surface in the longitudinal direction of the fixed cylinder or the rotary cylinder, a groove having a substantially inverted trapezoidal cross section is formed between the projections. Liquid that can be manufactured by a device based on a gas-liquid mixing device with a permanent magnet Substantially formed in a diameter 1 0 / m or less microbubble-containing liquid containing a stable microbubbles.

2. A liquid containing microbubbles, wherein the microbubbles described in claim 1 are mainly formed by air.

3. A liquid containing microbubbles, wherein the liquid according to claim 1 is water or water containing an additive, and microbubbles are mainly formed by air.

4 Water in which the liquid described in claim 1 exists naturally (river water, lake water, seawater, etc.) or an additive added thereto, and microbubbles are mainly formed by air. Containing liquids.

5. A liquid containing microbubbles, wherein the microbubbles described in claim 1 are mainly formed by hydrogen.

6. A liquid containing microbubbles, wherein the microbubbles described in claim 1 are mainly formed by oxygen.

7. A liquid containing microbubbles, wherein the microbubbles described in claim 1 are mainly formed by nitrogen.

8. A liquid containing microbubbles, wherein the microbubbles described in claim 1 are mainly formed by carbon dioxide gas.

9. A liquid containing microbubbles, wherein the liquid according to claim 1 is water or water containing an additive, and microbubbles are mainly formed by carbon dioxide gas.

10. Microbubble-containing liquid material in which the microbubbles described in claim 1 are mainly formed by ozone

11. The liquid according to claim 1, wherein the liquid is water or water containing an additive, and the microbubbles are mainly formed by ozone.

12. A liquid containing microbubbles, wherein the liquid according to claim 1 is an oil or fat, and the microbubbles are mainly formed by a single kind or plural kinds of alcohol vapors.

13 3. A rotating cylinder that is rotated by a motor is installed inside the fixed cylinder, a liquid suction port and an intake port are provided near one end of the fixed cylinder, and the outside of the fixed cylinder is provided at the other end of the fixed cylinder. A communication means is provided for communicating with the inside of the communication chamber, and a sending means rotated by the motor is provided in the communication chamber. The sending means sends the liquid in the communication chamber to the outside, so that the communication chamber and the inside of the fixed cylinder have a negative pressure. Liquid and gas are introduced into the fixed cylinder through the liquid suction port and the suction port, respectively. Further, permanent magnets are respectively provided on the inner peripheral surface of the fixed cylinder and the outer peripheral surface of the rotating cylinder. Wherein the liquid introduced into the fixed cylinder is mixed with fine bubbles, and the liquid is sent out to the outside by the sending means. By forming a plurality of ridges each having a substantially trapezoidal cross section on the surface and the outer peripheral surface of the rotary cylinder in the longitudinal direction of the fixed cylinder or the rotary cylinder, the cross section between these ridges is substantially inverted trapezoidal. Wherein the permanent magnet is disposed inside each of the grooves.

The depth from the surface of the permanent magnet arranged in each groove in the rotary cylinder to the surface of the ridge is from the surface of the permanent magnet arranged in each groove in the fixed cylinder to the surface of the ridge. 13. The gas-liquid mixing device according to claim 13, wherein the depth is larger than the depth of the gas-liquid mixing device.

The permanent magnet is disposed in the groove in one of the fixed cylinder and the rotary cylinder, and on the surface of the ridge on the other of the fixed cylinder and the rotary cylinder. The gas-liquid mixing device according to claim 13, wherein the permanent magnet is disposed on an upper surface of each of the protrusions in the fixed cylinder and the rotating cylinder.

14. The gas-liquid mixing device according to claim 13, wherein a stirring rod rotated by the motor is installed downstream of the liquid suction port and the suction port in the fixed cylinder.

18. The gas-liquid mixing device according to claim 17, wherein the stirring rod includes a permanent magnet.

13. The method according to claim 13, wherein the permanent magnet is mainly composed of neodymium or zirconium.

The gas-liquid mixing device according to claim 18, wherein the stirring rod includes an ion generating means.

The gas-liquid mixing device according to any one of claims 13 to 20, wherein microorganisms and Z or minerals and other additives are introduced together with the liquid from the liquid suction port using an appropriate device.

A gas-liquid mixing device formed by combining the device according to claims 13 to 20 with an additional device necessary for the purpose.