Micro / nano bubble generation device, method, electronic device and readable storage medium
By designing a micro-nano bubble generator suitable for high-temperature and high-pressure environments, the problem of insufficient applicability of existing devices under reservoir conditions was solved, and the preparation of micro-nano bubbles of different fluid types was realized, thereby improving reservoir recovery.
Patent Information
- Application Number
- CN202411696114.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2026-05-26
AI Technical Summary
Existing micro-nano bubble generators are only suitable for normal temperature and pressure conditions and have high requirements for the solution environment. They are also limited in the types of fluids they can be used for, making them difficult to apply effectively in extreme high temperature and high pressure environments such as oil reservoirs.
A micro/nano bubble generator was designed, comprising a liquid storage mechanism, a gas supply mechanism, a vortex mechanism, a circulation pipeline, a pressurized reaction tank, and a liquid storage tank. Micro/nano bubbles are formed through vortex shearing and pressurized reaction. The device is equipped with a pressure regulating device and sensors to adapt to different fluid types and reservoir conditions.
Micro- and nanobubbles were prepared under different viscosities, acidity, alkalinity, and nanoparticle fluids, thereby improving reservoir recovery.
Smart Images
Figure CN122076289A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of nanobubble preparation technology, specifically to a micro / nanobubble generating device, a micro / nanobubble generating method, an electronic device, and a readable storage medium. Background Technology
[0002] In recent years, micro- and nano-bubble technology has been widely used in many fields such as wastewater treatment and mineral flotation due to its low cost and unique physical properties. The oil reservoir exploration and development field has also recognized the potential application value of micro- and nano-bubble technology.
[0003] Unlike other application areas, oil reservoirs have relatively extreme (high temperature and high pressure) and complex formation environments. Many chemical agents (such as surfactants, nanoparticles, and polymers) are injected into the formation to help significantly improve oil recovery.
[0004] Most existing micro / nano bubble generators are only suitable for ambient temperature and pressure conditions and have high requirements for the solution environment. They are also limited in the types of fluids they can be used with. For example, membrane / plate generators are easily blocked and damaged by viscous fluids or micro / nano particles. Ultrasonic, Venturi tube, and mechanical shearing generators have low efficiency in generating micro / nano bubbles for special fluids and it is difficult to control the type of bubbles generated (for example, fluids containing surfactants are prone to generating large bubbles). Summary of the Invention
[0005] The purpose of this invention is to provide a micro / nano bubble generator, method, electronic device, and readable storage medium to solve the problems that current micro / nano bubble generators are only applicable to normal temperature and pressure conditions, have high requirements for the solution environment, and are limited in the types of applicable fluids.
[0006] To achieve the above objectives, embodiments of the present invention provide a micro / nano bubble generator, the device comprising: A liquid storage mechanism for storing the solution to be reacted; Gas supply mechanism, used to store the gas to be reacted; A vortex mechanism, connected to the outlet ends of the liquid storage mechanism and the gas supply mechanism, is used to perform vortex shearing on the solution and gas to form a fluid; A circulation pipe, the inlet end of which is connected to the outlet end of the vortex mechanism, and the outlet end of which is connected to the inlet end of the vortex mechanism, is used to transport the fluid output by the vortex mechanism back into the vortex mechanism to achieve multiple vortex shearing. A pressurized reaction vessel is connected to the outlet end of the vortex mechanism and the gas supply mechanism, and is used to convert the fluid that has been sheared by the vortex into a micro-nano bubble aqueous solution. The pressurized reaction vessel is provided with an exhaust pipe. A storage tank, connected to the outlet end of the pressurized reaction vessel, is used to store micro-nano bubble aqueous solution; A pressure regulating device, connected to the liquid storage tank, is used to regulate the internal pressure of the liquid storage tank.
[0007] Optionally, the device further includes: The displacement device is connected to the storage tank and is used to extract micro-nano bubble aqueous solution from the storage tank for core displacement.
[0008] Optionally, the eddy current mechanism includes: Accommodating cavity; Multiple impellers are rotatably disposed within the receiving cavity; A drive mechanism is disposed on the receiving cavity, and the power output end of the drive mechanism is connected to each impeller to drive the impeller to rotate.
[0009] Optionally, the device further includes: Temperature and pressure sensors are installed inside the pressurized reaction vessel to collect temperature and pressure values inside the pressurized reaction vessel. The display mechanism is connected to the temperature sensor and the pressure sensor and is used to display the temperature and pressure values.
[0010] Optionally, the solution includes at least one of the following: pure water, highly mineralized water, viscous fluid, surfactant-containing fluid, acidic fluid, alkaline fluid, and nanoparticle-containing fluid.
[0011] Optionally, the gas includes at least one of air, nitrogen, and carbon dioxide.
[0012] Optionally, the pressurized reaction vessel is provided with an observation window.
[0013] Secondly, embodiments of the present invention also provide a method for generating micro / nano bubbles, applied to the aforementioned micro / nano bubble generating device, the method comprising: S1. Confirmation that the start preparation command has been received; S2. Start the vortex mechanism, and at the same time control the liquid storage mechanism to inject a first preset volume of solution into the vortex mechanism and the gas supply mechanism to inject a second preset volume of gas into the vortex mechanism, and open the circulation pipe. S3. From the moment the circulation pipe is opened, after the first preset time, the vortex mechanism is controlled to inject all the fluid that has been sheared by the vortex into the pressurized reaction tank. S4. After the fluid is injected, the gas supply mechanism is controlled to start injecting gas into the pressurized reaction tank until the pressure value in the pressurized reaction tank reaches the first preset pressure, and then the gas injection stops. S5. From the moment the gas injection stops, after the second preset time, control the pressurized reaction vessel to exhaust gas at a preset rate until the pressure value inside the pressurized reaction vessel decreases to the second preset pressure, stop the exhaust, and return to step S4 until the gas injection and exhaust reach the preset number of times to complete the preparation of micro-nano bubbles, and then execute step S6. S6. Control the pressurized reaction vessel to deliver the prepared micro-nano bubbles to the storage tank, and control the pressure regulating device to keep the pressure value in the storage tank within the preset pressure range.
[0014] Thirdly, embodiments of the present invention also provide an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the above-described micro / nano bubble generation method.
[0015] Fourthly, embodiments of the present invention also provide a readable storage medium storing instructions that cause a machine to execute the above-described micro / nano bubble generation method.
[0016] This technical solution has a simple structure and a wide range of applications. It can prepare micro-nano bubbles with different viscosities, acidity and alkalinity, and nanoparticles to better match reservoir conditions and greatly improve reservoir recovery.
[0017] Other features and advantages of the embodiments of the present invention will be described in detail in the following detailed description section. Attached Figure Description
[0018] The accompanying drawings are provided to further illustrate embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of the first micro / nano bubble generator provided by the present invention; Figure 2 This is a schematic diagram of the structure of the second type of micro / nano bubble generator provided by the present invention; Figure 3 This is a schematic diagram of the eddy current mechanism provided by the present invention; Figure 4 This is a flowchart of the micro / nano bubble generation method provided by the present invention; Figure 5 This is a schematic diagram of the detection results of nanobubbles provided by the present invention.
[0019] Explanation of reference numerals in the attached figures 1-Liquid storage mechanism; 2-Gas supply mechanism; 3-Edge mechanism; 4-Circulation pipeline; 5-Pressurized reaction vessel; 6-Storage tank; 7-Voltage regulating device; 8-Displacement device; 9-Display mechanism; 31-Accommodation cavity; 32-Impeller; 33-Drive mechanism; 51-Exhaust pipe; 52-Temperature sensor; 53-Pressure sensor; 54 - Observation window. Detailed Implementation
[0020] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of the present invention.
[0021] In the embodiments of the present invention, unless otherwise stated, directional terms such as "up," "down," "left," and "right" generally refer to the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use.
[0022] The terms “first,” “second,” “third,” etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.
[0023] The terms "parallel" and "perpendicular" do not mean that the components must be absolutely parallel or perpendicular, but rather that they can be slightly tilted. For example, "parallel" simply means that its direction is more parallel than "perpendicular," not that the structure must be completely parallel, but that it can be slightly tilted.
[0024] The terms "horizontal," "vertical," and "sag" do not imply that a component must be absolutely horizontal, vertical, or sagging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be completely horizontal, but can be slightly tilted.
[0025] Furthermore, terms like "roughly" and "basically" are used to indicate that the content does not require absolute precision, but rather allows for a certain degree of deviation. For example, "roughly equal" does not simply mean absolute equality; in actual production and operation, achieving absolute "equality" is difficult, and a certain degree of deviation is generally present. Therefore, besides absolute equality, "roughly equal to" also includes the aforementioned situation where a certain degree of deviation exists. Using this as an example, in other cases, unless otherwise specified, terms like "roughly" and "basically" have similar meanings.
[0026] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0027] Figure 1 This is a schematic diagram of the structure of the first micro / nano bubble generator provided by the present invention; Figure 2 This is a schematic diagram of the structure of the second type of micro / nano bubble generator provided by the present invention; Figure 3 This is a schematic diagram of the eddy current mechanism provided by the present invention; Figure 4 This is a flowchart of the micro / nano bubble generation method provided by the present invention; Figure 5 This is a schematic diagram of the detection results of nanobubbles provided by the present invention.
[0028] like Figure 1 As shown, this embodiment provides a micro / nano bubble generator, the device comprising: Liquid storage mechanism 1 is used to store the solution to be reacted; Gas supply unit 2 is used to store the gas to be reacted; The vortex mechanism 3 is connected to the outlet end of the liquid storage mechanism 1 and the gas supply mechanism 2, and is used to perform vortex shearing on the solution and gas to form a fluid; The circulation pipe 4 has its inlet end connected to the outlet end of the vortex mechanism 3 and its outlet end connected to the inlet end of the vortex mechanism 3. It is used to transport the fluid output by the vortex mechanism 3 back into the vortex mechanism 3 to achieve multiple vortex shearing. The pressurized reaction tank 5 is connected to the outlet end of the vortex mechanism 3 and the gas supply mechanism 2, and is used to convert the fluid that has been sheared by the vortex into a micro-nano bubble aqueous solution. The pressurized reaction tank 5 is provided with an exhaust pipe 51, and the exhaust pipe 51 is provided with a flow sensor, which can realize the measurement of the exhaust volume. The storage tank 6 is connected to the outlet end of the pressurized reaction tank 5 and is used to store micro-nano bubble aqueous solution; The pressure regulating device 7 is connected to the liquid storage tank 6 and is used to regulate the internal pressure of the liquid storage tank 6.
[0029] Specifically, in this embodiment, the solution includes at least one of the following: pure water, highly mineralized water, viscous fluid, surfactant-containing fluid, acidic fluid, alkaline fluid, and nanoparticle-containing fluid. The storage mechanism 1 can employ multiple tanks, each storing a different solution. The tanks are connected to the vortex mechanism 3 via supply pipes, and each tank's corresponding supply pipe is equipped with an openable / closeable valve. The gas includes at least one of air, nitrogen, and carbon dioxide. The gas supply mechanism 2 can employ multiple gas cylinders, each storing a different gas. The gas cylinders are connected to the vortex mechanism 3 via supply pipes, and each gas cylinder's corresponding supply pipe is equipped with an openable / closeable valve. Specifically, the solution and gas can be selected according to the type of micro / nano bubble aqueous solution to be prepared, and the supply of solution and gas is achieved by controlling the opening and closing of the corresponding valves. The vortex mechanism 3 is used to mix the solution and gas. A circulation pipe 4, in conjunction with the vortex mechanism 3, returns the fluid output after shearing by the vortex mechanism 3 back into the vortex mechanism 3 for multiple vortex shearing cycles. After multiple cycles, a final fluid is formed. After the fluid is formed, it is transported to a pressurized reaction tank 5, and gas is supplied through a gas supply mechanism 2 to increase the pressure inside the pressurized reaction tank 5. The internal gas is discharged and the pressure is regulated through an exhaust pipe 51, thereby converting the fluid into a micro / nano bubble aqueous solution. After obtaining the micro / nano bubble aqueous solution, it is transported to a storage tank 6. Since a certain pressure difference needs to be maintained during the transport process, a pressure regulating device 7 controls the internal pressure of the storage tank 6, ensuring that the pressure difference between the pressurized reaction tank 5 and the storage tank 6 remains within a set range. The diameter of various pipes can be 2.0 cm or 3.0 cm. The pressure regulating device 7 can specifically be a back pressure pump for pressure regulation.
[0030] In another embodiment, an electric heater is installed inside the pressurized reaction vessel 5 to regulate the temperature within the vessel, thereby ensuring that the pressure range within the device is atmospheric pressure to 40 MPa and the temperature range is 20 to 200°C. This can be used to simulate the effects of different temperatures and pressures on the physicochemical properties of the generated micro- and nano-bubbles under reservoir conditions. The physicochemical properties of the micro- and nano-bubbles can be obtained through nanoparticle tracer analysis.
[0031] The aforementioned device has a simple structure and a wide range of applications. It can prepare micro- and nano-bubbles with different viscosities, acidity, alkalinity, and nanoparticles, which is beneficial to increasing the application range of micro- and nano-bubble solutions.
[0032] In another embodiment, the prepared micro / nano bubble aqueous solution is used for core displacement. Therefore, based on the structure of the above-mentioned system device, such as Figure 2 As shown, the device further includes: The displacement device 8, connected to the storage tank 6, is used to extract micro / nano bubble aqueous solution from the storage tank 6 for core displacement. The displacement device 8 is a known prior art and will not be described in detail here. Through the above scheme, a micro / nano bubble generating device matching reservoir conditions and compatible with different types of fluids is established, realizing the efficient application of micro / nano bubble technology in reservoir development. Furthermore, the device can increase the concentration of micro / nano bubbles, which is also beneficial for improving reservoir recovery.
[0033] Furthermore, such as Figure 3 As shown, the eddy current mechanism 3 includes: Accommodating cavity 31; Multiple impellers 32 are rotatably disposed within the receiving cavity 31; A drive mechanism 33 is disposed on the receiving cavity 31. The power output end of the drive mechanism 33 is connected to each impeller 32 and is used to drive the impeller 32 to rotate.
[0034] Specifically, the receiving cavity 31 is configured as a sealed cavity with an internal containing space. To ensure the vortex shearing effect on the solution and gas, multiple impellers 32 are rotatably arranged on the inner wall of the receiving cavity 31. Furthermore, a drive mechanism 33 is provided outside the receiving cavity 31, with each impeller 32 corresponding to a drive mechanism 33 for independent control. The drive shaft of the drive mechanism 33 passes through the wall of the receiving cavity 31 and connects to the impeller 32, thus driving the impeller 32. Additionally, there are hollow grooves between the impellers 32, and multiple flow channels are provided inside the receiving cavity 31.
[0035] A pressure sensor is installed inside the receiving cavity 31 to collect the pressure value inside the receiving cavity 31.
[0036] In another implementation, such as Figure 2 As shown, the device further includes: Temperature sensor 52 and pressure sensor 53 are installed inside the pressurized reaction vessel 5 to collect temperature and pressure values inside the pressurized reaction vessel 5. The display mechanism 9 is connected to the temperature sensor 52 and the pressure sensor 53 and is used to display the temperature and pressure values.
[0037] Specifically, in this embodiment, a temperature sensor 52 and a pressure sensor 53 are installed in the pressurized reaction vessel 5 to collect the temperature and pressure inside the pressurized reaction vessel 5 in real time, so as to realize operation control and ensure the preparation effect of micro-nano bubble aqueous solution; at the same time, the temperature and pressure values are displayed through the display mechanism 9.
[0038] Furthermore, the pressurized reaction vessel 5 is provided with an observation window 54.
[0039] Specifically, in this embodiment, such as Figure 2 As shown, the observation window 54 can monitor the preparation process inside the pressurized reaction vessel 5 in real time, so as to make operational adjustments.
[0040] like Figure 4 As shown, this embodiment provides a method for generating micro / nano bubbles, applied to the aforementioned micro / nano bubble generating device. The method includes: S1. Confirmation that the start preparation command has been received; S2. Start the vortex mechanism, and at the same time control the liquid storage mechanism to inject a first preset volume of solution into the vortex mechanism and the gas supply mechanism to inject a second preset volume of gas into the vortex mechanism, and open the circulation pipe. S3. From the moment the circulation pipe is opened, after the first preset time, the vortex mechanism is controlled to inject all the fluid that has been sheared by the vortex into the pressurized reaction tank. S4. After the fluid is injected, the gas supply mechanism is controlled to start injecting gas into the pressurized reaction tank until the pressure value in the pressurized reaction tank reaches the first preset pressure, and then the gas injection stops. S5. From the moment the gas injection stops, after the second preset time, control the pressurized reaction vessel to exhaust gas at a preset rate until the pressure value inside the pressurized reaction vessel decreases to the second preset pressure, stop the exhaust, and return to step S4 until the gas injection and exhaust reach the preset number of times to complete the preparation of micro-nano bubbles, and then execute step S6. S6. Control the pressurized reaction vessel to deliver the prepared micro-nano bubbles to the storage tank, and control the pressure regulating device to keep the pressure value in the storage tank within the preset pressure range.
[0041] Specifically, in this embodiment, by inputting different solutions and gases, and by changing the specific values of the first preset pressure, the second preset pressure, and the number of cycles of gas injection and gas exhaust, it is possible to prepare micro-nano bubbles of different specifications.
[0042] This embodiment also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the above-described micro / nano bubble generation method.
[0043] This embodiment also provides a readable storage medium storing instructions that cause a machine to perform the above-described micro / nano bubble generation method.
[0044] Example 1: In this embodiment, a method for preparing a high-concentration nanobubble aqueous solution is provided, comprising the following steps: 1. Select three types of fluids, such as pure water, highly mineralized water, or aqueous solutions containing surfactants, and fill them into the storage device. The mineral ions are Na+, Mg2+, Ca2+, and Cl-, and the mineralization concentration is several thousand to tens of thousands of mg / L. The surfactant types are preferably anionic surfactants such as sulfonate and sulfate, or amphoteric surfactants such as betaine and amine oxide, with a surfactant concentration of 0.001wt%-0.01wt%. 2. Start the vortex mechanism and introduce nitrogen gas at a flow rate of 0.5 L / min. The gas and liquid are fully circulated and sheared in the flow channel, and then return to the vortex mechanism through the circulation pipe (the inlet end of the pressurized reaction tank is closed). The circulatory vortex shearing lasts for 1 hour. 3. Quickly open the inlet end above the pressurization system, inject pure water, high-mineralized water, or micron-bubble aqueous solution containing surfactants after sufficient vortex shearing, and then close the inlet end; 4. Open the air inlet at the bottom of the pressurization system and introduce nitrogen. Once the real-time pressure reaches the set pressure value (10MPa-40MPa), close the air inlet. 5. Maintain the fluid in the pressurization system at the set pressure of 20MPa and 25℃ for 20 minutes, open the exhaust pipe, release the gas to 1MPa at a certain gas flow rate of 1.0L / h, close the exhaust pipe, and repeat steps 4 and 5 about 3-5 times. 6. Open the outlet unit (regulating unit) at 1 MPa. The prepared pure water, high-mineralized water, or nanobubble aqueous solution containing surfactants (nanobubble concentration can reach 5*10⁸-10⁹ / mL) enters the storage tank. The pressure regulating device controls the pressure of the intermediate container to 1 MPa. Figure 5 As shown, the nanobubbles are diluted 20 times.
[0045] 7. Different types of high-concentration nanobubble water are injected into the displacement device 29 by a back pressure pump to carry out laboratory core displacement in order to improve oil recovery.
[0046] Example 2: In this embodiment, a method for preparing a high-concentration nanobubble aqueous solution is provided, comprising the following steps: 1. Select an aqueous solution containing surfactant and polymer and fill it into the storage device. The surfactant type is preferably anionic surfactants such as sulfonate and sulfate, or amphoteric surfactants such as betaine and amine oxide, with a surfactant concentration of 0.001wt%-0.01wt%. The polymer is preferably polyacrylamide or acrylamide-acrylate copolymer, with a polymer concentration of 0.001wt%-0.2wt%. 2. Start the vortex mechanism and introduce nitrogen gas. The gas and liquid are fully circulated and sheared in the flow channel, and then return to the vortex mechanism through the circulation pipe (the inlet end of the pressurized reaction tank is closed). Circulate the vortex shear for 1 hour. 3. Quickly open the inlet end above the pressurization system, inject the micron-sized bubble aqueous solution containing surfactant and polymer aqueous solution after sufficient vortex shearing, and then close the inlet end; 4. Open the air inlet at the bottom of the pressurization system and introduce nitrogen. Once the real-time pressure reaches the set pressure value (10MPa-40MPa), close the air inlet. 5. Maintain the fluid in the pressurization system at the set pressure of 20MPa and 25℃ for 20 minutes, open the exhaust pipe, release the gas to 5MPa at a certain gas flow rate of 1.0L / h, close the exhaust pipe, and repeat steps 4 and 5 about 3-5 times. 6. Open the liquid outlet unit (regulating unit) at 5MPa. The pressure of the connected liquid storage tank is 1MPa (the pressure of the liquid storage tank is kept constant by the back pressure pump). Under a pressure difference of 5 times, the venturi-like structure of the designed regulating unit 15 generates a uniform micron bubble aqueous solution with high gas content. 7. High-gas-content uniform micron-sized bubble aqueous solution is injected into the displacement device 29 by a back pressure pump to carry out laboratory core displacement in order to improve oil recovery.
[0047] Example 3: In this embodiment, a method for preparing a high-concentration nanobubble aqueous solution is provided, comprising the following steps: 1. Select an aqueous solution containing nanoparticles and surfactants, and fill it into a storage container. The preferred types of nanoparticles are SiO2, TiO2, and Janus particles, with a nanoparticle-to-water ratio of 1:30-1:50. The preferred types of surfactants are anionic surfactants such as sulfonate and sulfate, or amphoteric surfactants such as betaine and amine oxide, with a surfactant concentration of 0.001wt%-0.01wt%. 2. Start the vortex mechanism and introduce nitrogen gas to fully mix the gas, liquid and solid in the flow channel. Then, through the inlet end above the pressurization system, inject the fully vortexed micron bubble aqueous solution containing nanoparticles and surfactants, and close the inlet end. 4. Open the air inlet at the bottom of the pressurization system and introduce nitrogen. Once the real-time pressure reaches the set pressure value (10MPa-40MPa), close the air inlet. 5. Maintain the fluid in the pressurization system at the set pressure of 20MPa and 25℃ for 20 minutes, open the exhaust pipe, release the gas to 2MPa at a certain gas flow rate of 1.0L / h, close the exhaust pipe, and repeat steps 4 and 5 about 3-5 times. 6. Open the liquid outlet unit (regulating unit) at 2MPa. The pressure of the connected liquid storage tank is 1MPa (the pressure of the liquid storage tank is kept constant by the back pressure pump). Under a pressure difference of 2 times, a high-concentration uniform micro-nano bubble aqueous solution containing nanoparticles is generated through the Venturi-like structure of the designed regulating unit 15. 7. High-concentration, uniform aqueous solution containing nanoparticles and micro-nano bubbles is injected into the displacement device 29 via a back pressure pump to perform laboratory core displacement in order to improve oil recovery.
[0048] Example 4: In this embodiment, a method for preparing a high-concentration nanobubble aqueous solution is provided, comprising the following steps: 1. Select pure water, acidic or alkaline aqueous solution (adjust the pH of the aqueous solution to 4.0, 5.0, or 6.0 with hydrochloric acid; adjust the pH of the aqueous solution to 7.5, 8.5, or 9.5 with sodium hydroxide) and fill it into the storage device; 2. Start the vortex mechanism and introduce nitrogen gas. The gas and liquid are fully mixed in the flow channel. Then, inject the fully vortexed micron bubble aqueous solution through the inlet end above the pressurization system and close the inlet end. 4. Open the air inlet at the bottom of the pressurization system and introduce nitrogen. Once the real-time pressure reaches the set pressure (5MPa-40MPa), close the air inlet. 5. Maintain the fluid in the pressurization system at set pressures of 5MPa, 10MPa, 20MPa, 30MPa, and 40MPa, and temperatures of 25℃, 45℃, 65℃, and 85℃ for 20 minutes respectively. Open the exhaust pipe and release the gas to 1MPa at a certain gas flow rate of 1.0L / h. Close the exhaust pipe and repeat steps 4 and 5 approximately 3-5 times. 6. The nanobubble water prepared in the pressurization system was then subjected to set pressures of 5MPa, 10MPa, 20MPa, 30MPa, and 40MPa, and temperatures of 25℃, 45℃, 65℃, and 85℃ for 30 min, 1 h, 6 h, 12 h, 24 h, 2 d, 10 d, and 30 d. Through an additional optical system and data collection system, the changes in the concentration and stability of the nanobubble water under different high temperatures and high pressures were focused on the visualization window of the pressurization system. 7. After depressurizing to 1 MPa, open the liquid outlet unit (regulation unit) to allow the prepared nanobubble aqueous solutions of different concentrations and stability (nanobubble concentration of 107-109 / mL; stability of 1d-30d) to enter the storage tank. The pressure regulating device controls the pressure of the intermediate container to 1 MPa. 8. By injecting nanobubble aqueous solutions of different concentrations and stability into the displacement device 29 through a back pressure pump, laboratory core displacement is carried out to improve oil recovery.
[0049] The optional embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details in the above embodiments. Within the scope of the technical concept of the embodiments of the present invention, various simple modifications can be made to the technical solutions of the embodiments of the present invention, and these simple modifications all fall within the protection scope of the embodiments of the present invention.
[0050] Those skilled in the art will understand that all or part of the steps in the methods of the above embodiments can be implemented by a program instructing related hardware. This program is stored in a storage medium and includes several instructions to cause a microcontroller, chip, or processor to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.
[0051] The optional embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details described above. Within the scope of the technical concept of the embodiments of the present invention, various simple modifications can be made to the technical solutions of the embodiments of the present invention, and these simple modifications all fall within the protection scope of the embodiments of the present invention. It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the embodiments of the present invention will not describe the various possible combinations separately. Furthermore, various different implementations of the present invention can be combined arbitrarily, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed in the present invention.
Claims
1. A micro / nano bubble generator, characterized in that, The device includes: A liquid storage mechanism (1) is used to store the solution to be reacted; Gas supply mechanism (2) is used to store the gas to be reacted; The vortex mechanism (3) is connected to the outlet end of the liquid storage mechanism (1) and the gas supply mechanism (2) and is used to perform vortex shearing on the solution and gas to form a fluid; A circulation pipe (4) is provided, with its inlet end connected to the outlet end of the vortex mechanism (3) and its outlet end connected to the inlet end of the vortex mechanism (3). The circulation pipe (4) is used to transport the fluid output by the vortex mechanism (3) back into the vortex mechanism (3) to achieve multiple vortex shearing. The pressurized reaction vessel (5) is connected to the outlet end of the vortex mechanism (3) and the gas supply mechanism (2) to convert the fluid that has been sheared by the vortex into a micro-nano bubble aqueous solution. The pressurized reaction vessel (5) is provided with an exhaust pipe (51). The storage tank (6) is connected to the outlet end of the pressurized reaction tank (5) and is used to store micro-nano bubble aqueous solution; A pressure regulating device (7) is connected to the liquid storage tank (6) and is used to regulate the internal pressure of the liquid storage tank (6).
2. The micro / nano bubble generator according to claim 1, characterized in that, The device further includes: Displacement device (8) is connected to the storage tank (6) and is used to extract micro-nano bubble aqueous solution from the storage tank (6) for core displacement.
3. The micro / nano bubble generator according to claim 1, characterized in that, The eddy current mechanism (3) includes: Accommodating cavity (31); Multiple impellers (32) are rotatably disposed within the receiving cavity (31); A drive mechanism (33) is provided on the receiving cavity (31). The power output end of the drive mechanism (33) is connected to each impeller (32) for driving the impeller (32) to rotate.
4. The micro / nano bubble generator according to claim 1, characterized in that, The device further includes: Temperature sensor (52) and pressure sensor (53) are installed inside the pressurized reaction vessel (5) to collect temperature and pressure values inside the pressurized reaction vessel (5); The display mechanism (9) is connected to the temperature sensor (52) and the pressure sensor (53) and is used to display the temperature and pressure values.
5. The micro / nano bubble generator according to claim 1, characterized in that, The pressurized reaction vessel (5) is equipped with an observation window (54).
6. The micro / nano bubble generator according to claim 1, characterized in that the solution... include: At least one of pure water, highly mineralized water, viscous fluid, surfactant-containing fluid, acidic fluid, alkaline fluid, and nanoparticle-containing fluid.
7. The micro / nano bubble generator according to claim 1, characterized in that, Gases include: At least one of air, nitrogen, and carbon dioxide.
8. A method for generating micro / nano bubbles, applied to the micro / nano bubble generating apparatus according to any one of claims 1-7, characterized in that, The method includes: S1. Confirmation that the start preparation command has been received; S2. Start the vortex mechanism, and at the same time control the liquid storage mechanism to inject a first preset volume of solution into the vortex mechanism and the gas supply mechanism to inject a second preset volume of gas into the vortex mechanism, and open the circulation pipe. S3. From the moment the circulation pipe is opened, after the first preset time, the vortex mechanism is controlled to inject all the fluid that has been sheared by the vortex into the pressurized reaction tank. S4. After the fluid is injected, the gas supply mechanism is controlled to start injecting gas into the pressurized reaction tank until the pressure value in the pressurized reaction tank reaches the first preset pressure, and then the gas injection stops. S5. From the moment the gas injection stops, after the second preset time, control the pressurized reaction vessel to exhaust gas at a preset rate until the pressure value inside the pressurized reaction vessel decreases to the second preset pressure, stop the exhaust, and return to step S4 until the gas injection and exhaust reach the preset number of times to complete the preparation of micro-nano bubbles, and then execute step S6. S6. Control the pressurized reaction vessel to deliver the prepared micro-nano bubbles to the storage tank, and control the pressure regulating device to keep the pressure value in the storage tank within the preset pressure range.
9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the micro / nano bubble generation method as described in any one of claims 8.
10. A readable storage medium, characterized in that, The readable storage medium stores instructions for causing a machine to perform the micro / nano bubble generation method as described in any one of claims 8.