Micro-nano bubble generation method and system based on steam jet condensation

Abstract

The invention discloses a micro-nano bubble generation system and method based on steam jet condensation, and relates to the technical field of bubble generation. In order to solve the technical defect that multiple micro-nano bubble generation methods exist in the prior art, but a micro-nano bubble generation method based on steam jet condensation is lacked, the technical scheme provided by the invention is as follows: the micro-nano bubble generation device comprises a steam source for providing steam with set temperature and pressure, and the steam source is connected to a mixing pipeline; the non-condensable gas source is used for providing non-condensable gas with set pressure and flow, and the non-condensable gas source is connected to the mixing pipeline; the mixing pipeline is used for mixing the steam output by the steam source with the non-condensable gas output by the non-condensable gas source to form mixed gas; the jet flow nozzle is connected to the mixing pipeline and is used for spraying the mixed gas to a liquid pool at a set speed; and the liquid pool is used for containing condensed liquid. The micro-nano bubble generator is suitable for micro-nano bubble generation based on steam jet condensation.

Description

Technical Field

[0001] The invention relates to the technical field of bubble generation, and in particular to a micro-nano bubble generation system and method based on steam jet condensation. Background Art

[0002] Bubble flow is a typical gas-liquid two-phase flow type, which is widely used in energy, petrochemical, environment and medical fields. Bubble size is a key factor affecting the interfacial area concentration and heat and mass transfer efficiency of bubbly flow. Bubbles with a diameter of 0.1–50 μm are generally called micro-nano bubbles, which have the characteristics of long existence time, high interfacial potential and high mass transfer efficiency. Therefore, it is of great significance to develop a simple and efficient method and system for generating micro-nano bubbles.

[0003] There are many methods and devices for generating micro-nano bubbles. For example, patent number CN109157993A discloses a micro-nano bubble generator and a method for generating micro-nano bubbles. The micro-nano bubble generator includes a main body and an end cover, wherein the end cover is sealed and arranged at the top of the main body, and an air inlet is arranged on the end cover. The main body has an inverted conical inner cavity, a water inlet is arranged on the side wall, and a water outlet is arranged on the bottom, and the water inlet is tangent to the inner wall of the main body. During operation, by controlling the pressure, water flows in from the water inlet along the tangent direction of the inner wall of the main body, forming a vortex in the inner cavity, and gas is introduced from the air inlet at the same time. After the gas and water flow are mixed, bubbles are generated, and the bubbles are discharged from the water outlet with the water flow.

[0004] Patent No. CN110393932A discloses a filament-induced micro-nano bubble generating device. The laser light source device consists of a light source part and a laser focusing part. The laser emitted by the light source part is focused by the laser focusing part and then forms a plasma filament in the laser filament part through a beam control device. The laser filament part uses nano-metal particles uniformly doped in a solution. After the laser generates filaments in the solution, a supercontinuum spectrum is generated in the solution. The surface plasma of the nano-metal particles is resonantly excited by the supercontinuum spectrum, and the temperature rises rapidly to instantly vaporize the liquid solution to form a large number of clustered micro-nano bubbles. The scanning detection device in the bubble imaging part is connected to the imaging display device through a computer. The feedback control part sets the laser power parameters through the control software, and feeds back the bubble size data detected by the scanning detection device to the beam control device through analysis. The beam control device adjusts the power of the laser to change the size, density and generation rate of the bubbles.

[0005] Patent No. CN105857511B discloses a microbubble generator, including a bubble nozzle, a fluid core, a shell and an end cover; a water inlet is provided on the shell or the end cover. The fluid core is a hollow shuttle-shaped structure, and an exhaust hole is provided around the largest cross-sectional diameter; the fluid core is placed in the shell of the bubble generator; one end of the shell is sealed by the end cover, and the other end is a bubble nozzle connected to the outside world. A 10,000-ton ship microbubble generating device based on the diffusion and crushing technology includes a water inlet pipe, a filter device, a water pump, a connecting hose, a microbubble generator, an air inlet pipe and a blower; the water inlet pipe is connected to the water pump, and a filter device is provided on the water inlet pipe; the water pump is connected to the water inlet of the microbubble generator through a connecting hose; the air inlet of the microbubble generator is connected to the blower through the air inlet pipe.

[0006] Patent No. CN107899441B discloses a microbubble generating device, including an accelerating swirl premixing mechanism, the accelerating swirl premixing mechanism includes a premixing chamber, which is used to accelerate the mixing and turbulent shearing of the inflowing gas-liquid mixed fluid, and the premixing chamber is a spiral volute-type cavity; a bubble ejection mechanism; also includes a steering swirl mixing mechanism, including a steering chamber connected to the premixing chamber, which is used to perform directional rotational mixing and turbulent shearing of the fluid from the premixing chamber from the centripetal radial flow to the axial flow, and the steering chamber has a double outlet; a diffusion swirl mixing mechanism, which has at least two, which are respectively arranged on both sides of the steering swirl mixing mechanism, each of which includes a diffusion chamber connected to one of the outlets of the steering chamber, which is used to perform axial flow rotational diffusion impact mixing and turbulent shearing of the fluid from the steering chamber; there are two bubble ejection mechanisms, each of which is connected to the corresponding diffusion chamber.

[0007] Patent No. CN101648117B discloses a micro-bubble or droplet generating device, in which a mixing T-type tee and a distribution T-type tee are respectively provided with T-type channels connected to the outside world, a main phase delivery pump and a dispersed phase delivery pump are respectively connected to the two input ends of the mixing T-type tee, an output end of the mixing T-type tee is connected to the input end of the distribution T-type tee, and two output ends of the distribution T-type tee are respectively connected to the first microvalve and the second microvalve; one output end of the distribution T-type tee is a bubble or droplet generating chamber, the diameter of the bubble or droplet generating chamber is 3-5mm, and the length is 10-20mm, the diameter of the T-type channel of the mixing T-type tee 3 and the distribution T-type tee is 0.5-3mm; the ratio of the length of the straight branch pipe of the distribution T-type tee to the diameter of the T-type channel does not exceed 400.

[0008] Patent No. CN113617236A discloses a high-efficiency micro-nano bubble generator, including a fixed component and a bubble cutting component, the fixed component includes a cylinder, the inner wall of the cylinder is fixedly connected to a first pressure plate, the first pressure plate is provided with a first pressure hole, the bubble cutting component includes a cutting cylinder, a cutting net is arranged in the cutting cylinder, an outer wall of the cutting cylinder is provided with an external thread, the cutting cylinder is threadedly connected to the inner wall of the cylinder, a first air inlet groove is arranged on the outer wall of the cutting cylinder, a second pressure plate is arranged in the cylinder, a second pressure hole is arranged on the second pressure plate, the first pressure hole is connected to the second pressure hole, the inner diameter of the second pressure hole is larger than the inner diameter of the first pressure hole, a second air inlet groove is arranged on the second pressure plate, the second air inlet groove is connected to the second pressure hole, and there is a gap between the second pressure plate and the inner wall of the cylinder.

[0009] Patent No. CN110898699B discloses a microbubble generating device based on bubble fusion, the device comprising: a bubble fusion water tank, a venturi channel, a gas transmission system and a tapered connecting channel. The right side of the bubble fusion water tank is connected to the gas transmission system, so that the microtubes of the gas transmission system are immersed in the bubble fusion water tank downward, and gas is injected into the microtubes. Microbubbles are continuously generated in the bubble fusion water tank by utilizing the bubble fusion mechanism; the venturi channel is connected to the bubble fusion water tank through the tapered connecting channel, and the generated microbubbles are introduced into the venturi channel through the tapered connecting channel by utilizing the low pressure area formed at the throat of the venturi channel, so as to collect the microbubbles.

[0010] Patent No. CN117258572B discloses a microbubble generating device and a pipeline system. The microbubble generating device includes: an air intake component, a shell and a microbubble generating component; a mounting seat is provided on the shell, a mounting cavity is provided on the mounting seat, the air intake component includes a one-way valve and a spring, the one-way valve and the spring are arranged in the mounting cavity, the spring sleeve is arranged outside the valve stem and has an outward elastic force on the valve surface; the microbubble generating component includes an injection component and a plurality of filters, the injection component and the plurality of filters are arranged in sequence along the axial direction from the water inlet end to the water outlet end; the injection component is provided with an air intake channel and at least one water passage, and the air intake channel is connected to each water passage. The pipeline system includes the above-mentioned microbubble generating device.

[0011] Patent No. CN103979665B discloses a dual-fluid micro-bubble jet generating device, including a bubble nozzle seat, a connecting piece, a rotating shell, a rotating body core, a connecting seat and a bubble nozzle.

[0012] Patent No. CN106076135B discloses a microbubble generating device, which is provided with a liquid inlet, a gas inlet, a bubble outlet and a gas-liquid mixing chamber. An air hole with an angular structure is provided at the gas-liquid interface of the gas-liquid mixing chamber, and the tip of the air hole angular structure points to the direction of liquid flow.

[0013] Patent No. CN102942251A discloses a multi-nozzle jet micro-nano bubble aerator, which includes a multi-nozzle water pump, and bubble aeration nozzles respectively connected to each nozzle of the water pump. Each of the bubble aeration nozzles includes an aeration nozzle body, a water pipe, and an air distribution pipe.

[0014] Patent No. CN102218275A discloses a micro-nano bubble generator. The micro-nano bubble generator includes an inlet pipe and an outlet pipe, one end of the inlet pipe is connected to a booster pump, the other end of the booster pump is sealed and connected to the top of the dissolved gas tank through a pipeline, an electromagnetic flowmeter is provided on the pipeline, the top of the dissolved gas tank is sealed and connected to an inlet pipe, the electromagnetic valve provided on the inlet pipe is located in a control box, the dissolved gas tank is provided with a jet nozzle, a jet throat chamber, a liquid level float, and a dissolved gas water absorption pipe, the jet nozzle is connected to the pipeline, a jet throat chamber is provided below the jet nozzle and at a position corresponding to the jet nozzle, a gas-liquid cavity is provided between the jet nozzle and the jet throat chamber, a programmable controller controls the switch of the electromagnetic valve, and the dissolved gas water absorption pipe extends to the outside of the dissolved gas tank and is connected to the outlet pipe.

[0015] Patent No. CN115999390A discloses a microbubble generating device and a microbubble generating method. The microbubble generating device includes a shell with openings at both ends, and at least one shearing component is arranged in the shell; the shearing component includes a first internal component, a second internal component and a third internal component, and a shearing cavity is formed between the first internal component, the second internal component and the third internal component.

[0016] Patent No. CN110127798B discloses a micro-bubble dissolved gas water generating device. The micro-bubble dissolved gas water generating device includes an upright dissolved gas tank and a cyclone separation device. A tangential inlet 1 is provided on the side wall of the dissolved gas tank near the bottom, which cuts into the corresponding side wall and communicates with the interior of the dissolved gas tank, and the tangential inlet 1 is provided for a gas-liquid mixed liquid to be input. The cyclone separation device includes at least one cyclone separation tube assembly uprightly arranged in the dissolved gas tank, and a tangential inlet 2 is provided on the side wall of each cyclone separation tube assembly, which cuts into the corresponding side wall and communicates with the interior of the corresponding cyclone separation tube assembly.

[0017] Patent No. CN109260973B discloses a micro-bubble generating device based on the shear effect of a sphere, wherein a water storage system is sequentially connected to a circulation pump and a bubble generating device through a pipeline to form a loop; the bubble generating device comprises a front diffusion section, a rectifying section, a contraction section, a bubble generating section and a rear contraction section which are sequentially connected, and a solid ball is fixedly arranged in the bubble generating section; a circle of equidistant gaps is formed between the solid ball and the tube wall of the bubble generating section, and a "T"-shaped thin tube is vertically arranged on the solid ball to penetrate the solid ball and the tube wall, one end of the thin tube is an air inlet pipe, and the other end is a water inlet pipe; a gas-liquid mixing pipe is horizontally arranged through the center of the solid ball toward the water inlet end; and a bubble breaker is arranged at the other end;

[0018] Patent No. CN112023739A discloses a method for preparing micro-nano bubbles, which is specifically as follows: iron oxide particles are added to degassed water to form a suspension, the suspension is placed in a constant temperature water bath, and the gas of the target bubbles is introduced to obtain a saturated gas solution; the gas-saturated solution with a water bath is placed in an alternating magnetic field, the magnetic field is turned on, and local hot spots are formed through the heating of iron oxide and cooling of an external water bath, thereby reducing the local solubility of the solution in the gas and inducing the precipitation of micro-nano bubbles.

[0019] Patent No. CN118221208B discloses a supercavitation microbubble generating device and generating method, including a screening separator, a spray inlet is provided on one side of the screening separator, the spray inlet is connected to a water inlet pipe, a water inlet control valve and a booster pump are provided on the water inlet pipe, an exhaust port is provided on the top of the screening separator, a screen pipe, a dissolved air device and an air intake return pipe are connected to the outside of the exhaust port in sequence, a return control valve is provided on the air intake return pipe, one end of the air intake return pipe away from the dissolved air device is connected to the water inlet pipe, the air intake return pipe is located between the water inlet control valve and the booster pump, and a dissolved air water outlet is provided at the bottom of the screening separator

[0020] Patent No. CN117861477A discloses a microbubble generating device with controllable particle size. The reaction component includes a shell and a tubular ceramic membrane arranged in the shell. The outer walls at both ends of the tubular ceramic membrane are sealed and connected to the inner wall of the shell, so that a closed annular cavity is formed between the inner wall of the shell and the outer wall of the tubular ceramic membrane. The liquid flows into the internal channel of the tubular ceramic membrane from one end of the tubular ceramic membrane and flows out from the other end of the tubular ceramic membrane. The high-pressure gas enters the annular cavity through the air inlet of the shell. Under the action of pressure, the high-pressure gas penetrates the membrane holes of the tubular ceramic membrane wall and enters the internal channel of the tubular ceramic membrane, and forms microbubbles under the shearing action of the liquid in the internal channel of the tubular ceramic membrane. The microbubbles follow the liquid to flow out of the reaction component.

[0021] Patent No. CN111939778A discloses a micro-nano bubble generating device, including a water inlet pipe, on which a first flow meter, a water pump and a first electric regulating valve are installed; an inner annular cavity is formed in the water inlet pipe, and a plurality of air outlets are evenly distributed on the inner annular cavity; the inner annular cavity is connected to an air inlet pipe, on which an air pump, a second flow meter and a second electric regulating valve are installed; the water inlet pipe and the air inlet pipe are both connected to a spiral mixing tube, and the spiral mixing tube is connected to a boosting tube; the inner diameter of the boosting tube gradually decreases from both sides to the middle.

[0022] Patent No. CN104023833B discloses a microbubble generating device and a swirl flow generating device, in which a hole is formed in the microbubble generating device which passes through the main body thereof longitudinally. A gas-liquid mixing space is configured with one side of the hole as a nozzle, and a liquid supply portion is provided at the other end. A swirl flow forming body accommodating space for accommodating a swirl flow forming body is provided between the gas-liquid mixing space and the liquid supply portion. A pair of annular protrusions are provided on the outer peripheral surface of the outer peripheral portion of the swirl flow forming body, and both sides thereof are airtight with O-rings. On the main body, transverse holes are provided at positions corresponding to the annular space demarcated by the airtight area of ​​the protrusions, and at the same time, a gas passage connected to the gas-liquid mixing space is provided on the main body of the swirl flow forming body. High-pressure liquid is ejected into the gas-liquid mixing space from a spiral slope provided on the swirl flow forming body.

[0023] Patent No. CN112642310A discloses a microbubble generating device, a microbubble generating control method and a device. After the liquid material passes through the contraction section, it enters the gas distribution porous tube on the air inlet section, and the gas and liquid are mixed in the gas distribution porous tube, and then enters the expansion section and the gas-liquid expansion section. The microbubble generating device uses the Venturi tube and micropore distribution principle to form microbubbles with high discreteness and effectively shear and crush the bubbles by the fluid. Larger bubbles are crushed under the pressure recovery effect in the microbubble generating device to form microbubbles; no internal components or swirl devices are used, which effectively reduces the dissipation of fluid energy and avoids the aggregation of microbubbles, so that the microbubble fraction is significantly increased.

[0024] Patent No. CN110975662A discloses a micro-nano bubble generator, including a generating column, in which a connecting pipe, a vortex chamber and an overflow chamber are provided, the connecting pipe runs through the generating column, the bottom of the connecting pipe is connected to an external air source and a water source, a plurality of groups of vortex chambers are connected in series on the connecting pipe from bottom to top, the overflow chamber is connected to the top of the connecting pipe, and a mushroom head is provided on the outer peripheral wall of the top of the generating column; an outer shell, the outer shell is sleeved on the generating column, the mushroom head divides the outer shell into an upper vacuum chamber and a lower liquid storage chamber; a rotating ring, the rotating ring is rotatably arranged on the inner peripheral wall of the outer shell, a hanging opening for liquid to pass through is left between the bottom end of the mushroom head and the rotating ring, the rotating ring is provided with threaded leaves and needles, the threaded leaves are located below the hanging opening, and the needles are located above the hanging opening.

[0025] Patent No. CN103112959B discloses a nano-micro bubble generating device, which includes a motor, a stainless steel cylinder, a rotating shaft, a spiral blade, a cutting blade, a dynamic balance bracket, and a spherical outer cover. The stainless steel cylinder is fixedly connected to the motor, the rotating shaft is fixedly connected to the shaft of the motor and keeps concentricity, the spiral blade, the cutting blade and the spherical outer cover are fixed on the rotating shaft and keep concentricity, the rotating shaft is supported by the inner wall of the stainless steel cylinder through the dynamic balance bracket, there is a narrow gap between the spherical outer cover and the inner wall of the stainless steel cylinder, and the stainless steel cylinder has an air inlet at one end close to the motor and a water inlet at one end away from the motor. When the motor rotates under atmospheric pressure, it can draw air into the water and mix water and air into the cabin between the spiral and the outer cover, forming high pressure and producing a gas explosion effect; at the same time, various mechanical and fluid longitudinal, circumferential and radial cutting forces are formed to repeatedly crush the bubbles, and finally nano-scale micro bubbles can be generated.

[0026] Patent No. CN114288884B discloses a microbubble generating device and water heater with an air storage chamber, including: an air dissolving tank with a water inlet pipe and a water outlet pipe, and an air storage chamber, an air supply pipe and a drain pipe are arranged between the air storage chamber and the air dissolving tank, the air supply pipe is used to introduce the high-pressure gas in the air storage chamber to below the liquid level of the air dissolving tank, and at the same time introduce the water in the air dissolving tank into the air storage chamber, and the drain pipe is used to drain the water in the air storage chamber into the air dissolving tank; an air pump is connected to the air storage chamber, a switch valve is arranged on the air supply pipe, and a flow meter is arranged on the water inlet pipe or the drain pipe. When working, the air supply pipe is a gas-liquid replacement channel, and the drain pipe is a gas-filling and draining channel, and the drain pipe can also speed up the gas-liquid replacement process. In addition, the entire gas filling process does not need to cut off the water, and the water flow will increase slightly during the drainage and air intake stage of the air storage chamber, avoiding the problem of the water flow becoming smaller during the gas filling process in the prior art.

[0027] In the prior art, there are many methods for generating micro-nano bubbles, such as micropore gas injection, bubble crushing (shear, swirl, pressure, cutting), gas precipitation, reaction gas production, etc. However, there is no method and system for generating micro-nano bubbles based on steam jet condensation. Summary of the invention

[0028] In order to solve the technical defects existing in the prior art, there are a variety of micro-nano bubble generation methods in the prior art, but there is a lack of micro-nano bubble generation methods based on steam jet condensation, the technical solution provided by the present invention is:

[0029] A micro-nano bubble generation system based on steam jet condensation, comprising:

[0030] a steam source for providing steam of set temperature and pressure, wherein the steam source is connected to the mixing pipe;

[0031] A non-condensable gas source, used for providing non-condensable gas of set pressure and flow, wherein the non-condensable gas source is connected to the mixing pipeline;

[0032] A mixing pipeline, used for mixing the steam outputted from the steam source with the non-condensable gas outputted from the non-condensable gas source to form a mixed gas;

[0033] A jet nozzle connected to the mixing pipe, used for spraying the mixed gas into the liquid pool at a set speed;

[0034] A liquid reservoir is used to contain condensed liquid.

[0035] Furthermore, a preferred embodiment is provided, wherein the jet nozzle is a single-hole circular nozzle or a multi-hole nozzle, and its aperture, spray angle and spray speed are adjustable.

[0036] Furthermore, a preferred embodiment is provided, wherein the liquid pool is located below the jet nozzle.

[0037] Furthermore, a preferred embodiment is provided, wherein the liquid in the liquid pool is used to perform condensation and shearing action with the injected mixed gas to form micro-nano bubbles.

[0038] Furthermore, a preferred embodiment is provided, wherein the liquid pool has a temperature control device and a pressurizing device to adjust the temperature and pressure of the liquid.

[0039] Furthermore, a preferred embodiment is provided in which a vortex mixing structure is provided in the mixing pipe to enhance the mixing uniformity of the steam and the non-condensable gas.

[0040] Based on the same inventive concept, the present invention also provides a method for generating micro-nano bubbles based on steam jet condensation, which is implemented based on the system and includes:

[0041] The step of collecting steam parameters including steam source temperature, pressure and flow parameters;

[0042] The step of sending a control signal according to the steam parameter;

[0043] The step of collecting non-condensable gas parameters of flow rate and pressure parameters of the non-condensable gas source;

[0044] The step of sending a control signal according to the non-condensable gas parameter;

[0045] The steps of collecting gas flow rate and pressure and adjusting the ratio of steam and non-condensable gas;

[0046] Steps for sending injection speed and injection angle control signals.

[0047] Based on the same inventive concept, the present invention also provides a computer storage medium for storing a computer program. When the computer program is read by a computer, the computer executes the described method.

[0048] Based on the same inventive concept, the present invention also provides a computer, including a processor and a storage medium. When the processor reads a computer program stored in the storage medium, the computer executes the method described.

[0049] Based on the same inventive concept, the present invention also provides a computer program product, which is a computer program. When the computer program is executed, the method described above is implemented.

[0050] Compared with the prior art, the technical solution provided by the present invention is beneficial in that:

[0051] By spraying a mixture of steam and non-condensable gas into a liquid pool, efficient generation of micro-nano bubbles is achieved by utilizing steam condensation shock waves and strong shear flow. This method not only excels in bubble generation efficiency, but also simplifies the equipment structure. Through the additional hybrid power provided by the steam condensation process, this solution avoids reliance on complex mechanical structures, such as cyclone devices or high shear equipment required in traditional methods. In addition, the introduction of steam condensation shock waves provides strong energy support for gas dispersion, making the generated bubbles smaller in diameter and more stable in distribution, significantly improving the overall efficiency compared to reaction-based gas production or other mechanical shearing technologies.

[0052] The strong stirring and mixing volume formed by the steam jet significantly improves the uniform distribution of bubbles in the liquid pool. This effect is due to the special design of the jet nozzle. Its high-energy flow makes the shearing effect between the mixed gas and the liquid more intense, which not only increases the number of bubbles generated, but also reduces their diameter and makes them more uniform. Compared with the existing Venturi tube or distributed porous tube, the design of the steam jet reduces the restrictions on fluid flow and pipeline connections, making it more adaptable to the industrial needs of large-scale bubble generation. At the same time, this design can effectively reduce the problem of local high energy consumption and improve the overall operating economy of the equipment.

[0053] By adjusting steam parameters (such as temperature and pressure), non-condensable gas ratio and liquid pool temperature, this method achieves flexible control of bubble diameter and concentration. This effect is due to the high adjustability and modular design of various system parameters. For example, increasing the steam pressure can increase the injection speed of the mixed gas, thereby reducing the bubble diameter; adjusting the liquid pool temperature can optimize the condensation efficiency and shearing effect, thereby controlling the bubble distribution concentration. Compared with the complex parameter adjustment process in the existing optical filament induction technology, this solution significantly reduces the difficulty of operation, provides a more intuitive and convenient control method, and shows higher reliability in terms of performance consistency and applicability.

[0054] The structure is simple, installation and maintenance are convenient, and it supports a variety of gas source connection methods, with significant scalability and adaptability. Thanks to the customized design of each component, such as the modular steam source and liquid pool configuration, the device can adjust the connection form and parameter settings according to different working conditions. Compared with the existing technology that requires precise adjustment and complex mechanical devices, it is not only more convenient to operate, but also has lower maintenance costs. At the same time, the open design of the system provides flexibility for applications under multi-working conditions, whether it is used for experimental research or industrial production. In addition, the maintenance and upgrade of the equipment has become simpler due to its modular design, providing greater possibilities for subsequent optimization.

[0055] It is suitable for use in the generation of micro-nano bubbles based on steam jet condensation. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 It is a schematic diagram of the structure of the micro-nano bubble generation system based on steam jet condensation;

[0057] Figure 2 Schematic diagram of the nozzle;

[0058] Figure 3 Schematic diagram of actual micro-nano bubble generation.

[0059] Among them, 1 is a steam source, 2 is a non-condensable gas source, 3 is a nozzle, and 4 is a liquid pool. DETAILED DESCRIPTION

[0060] In order to make the advantages and benefits of the technical solution provided by the present invention more clearly reflected, the technical solution provided by the present invention is now further described in detail in conjunction with the accompanying drawings, specifically:

[0061] Embodiment 1: This embodiment provides a micro-nano bubble generation system based on steam jet condensation, comprising:

[0062] A steam source 1, used for providing steam of set temperature and pressure, wherein the steam source 1 is connected to a mixing pipe;

[0063] A non-condensable gas source 2, used for providing non-condensable gas of set pressure and flow, wherein the non-condensable gas source 2 is connected to a mixing pipeline;

[0064] A mixing pipe, used for mixing the steam outputted from the steam source 1 with the non-condensable gas outputted from the non-condensable gas source 2 to form a mixed gas;

[0065] A jet nozzle 3 connected to the mixing pipe, used to spray the mixed gas into the liquid pool 4 at a set speed;

[0066] The liquid pool 4 is used to contain the condensed liquid.

[0067] Embodiment 2: This embodiment further limits the micro-nano bubble generating system based on steam jet condensation provided in Embodiment 1, wherein the jet nozzle 3 is a single-hole circular nozzle 3 or a multi-hole nozzle 3, and its aperture, injection angle and injection speed are adjustable.

[0068] Embodiment 3: This embodiment further limits the micro-nano bubble generation system based on steam jet condensation provided in Embodiment 1, and the liquid pool 4 is located below the jet nozzle 3 .

[0069] Embodiment 4: This embodiment further limits the micro-nano bubble generation system based on steam jet condensation provided in Embodiment 1. The liquid in the liquid pool 4 is used to condense and shear with the jetted mixed gas to form micro-nano bubbles.

[0070] Embodiment 5: This embodiment further limits the micro-nano bubble generation system based on steam jet condensation provided in Embodiment 1. The liquid pool 4 has a temperature control device and a pressurizing device to adjust the temperature and pressure of the liquid.

[0071] Embodiment 6: This embodiment further limits the micro-nano bubble generating system based on steam jet condensation provided in embodiment 1. A vortex mixing structure is provided in the mixing pipe to enhance the mixing uniformity of steam and non-condensable gas.

[0072] Implementation Method 7: Combination Figure 1-3 Description of this embodiment This embodiment provides a method for generating micro-nano bubbles based on steam jet condensation, and the method is implemented based on the system provided in the first embodiment, including:

[0073] The step of collecting steam parameters of temperature, pressure and flow parameters of steam source 1;

[0074] The step of sending a control signal according to the steam parameter;

[0075] The step of collecting non-condensable gas parameters of flow rate and pressure parameters of the non-condensable gas source 2;

[0076] The step of sending a control signal according to the non-condensable gas parameter;

[0077] The steps of collecting gas flow rate and pressure and adjusting the ratio of steam and non-condensable gas;

[0078] Steps for sending injection speed and injection angle control signals.

[0079] Specifically, they include:

[0080] Step 1: Preparation and transportation of steam and non-condensable gas

[0081] Steam source 1: Steam source 1 consists of a cylindrical heating tank with a heater and a pressure regulating valve inside. A steam outlet is provided on the top of the heating tank and connected to the mixing pipe. The outlet diameter is usually 5 mm to 20 mm to ensure sufficient steam flow. The temperature and pressure of the steam are adjusted by the steam control module.

[0082] Non-condensable gas source 2: Non-condensable gas source 2 is a rectangular metal shell air pump, with a gas inlet at the front end, and the air pump outlet is connected to the mixing pipe through a pipeline. The flow of non-condensable gas is controlled by a built-in flow regulating valve, and the connection port adopts a conical design to reduce the resistance of gas flow.

[0083] Step 2: Mixing of steam and non-condensable gas

[0084] Mixing pipe: The mixing pipe is a long cylindrical pipe with a diameter of 10 mm to 50 mm. The inner wall of the pipe is smooth to reduce the resistance of gas flow, and a vortex mixing element is built in. The vortex element adopts a spiral blade design with an inclination angle of 10° to 30°. The mixing uniformity of steam and non-condensable gas is enhanced through the rotation of the airflow. One end of the mixing pipe is connected to the steam source 1 and the non-condensable gas source 2, and the other end is connected to the jet nozzle 3 to form a continuous gas flow path.

[0085] Step 3: The mixed gas is injected into the liquid pool 4 through the jet nozzle 3

[0086] Jet nozzle 3: The structure of jet nozzle 3 adopts a single-hole circular design, and its aperture ranges from 0.5 mm to 5 mm. The main body of nozzle 3 is cylindrical, with a length of 10 mm to 50 mm, and the outer wall is provided with threads for connection with the mixing pipe. The inner wall of the front end of nozzle 3 is smooth, and the tail end can be installed with a spray angle adjuster, allowing the spray angle to be adjusted within the range of 10° to 45°. The material of nozzle 3 is high temperature and corrosion resistant metal or polymer material to ensure the safety of spraying the mixed gas of high-pressure steam and non-condensable gas.

[0087] Step 4: Steam condensation and micro-nano bubble generation

[0088] Structure and shape of liquid pool 4: Liquid pool 4 is a rectangular or cylindrical container, and its volume can be designed to be 10 liters to 100 liters according to demand. Liquid pool 4 is provided with a liquid circulation port and a liquid discharge port at the bottom, and a jet gas inlet is provided at the top to receive the mixed gas sprayed from the jet nozzle 3. The inner wall of liquid pool 4 is smooth to avoid bubble aggregation, and a temperature control heater and a cooler are provided at the bottom to ensure accurate control of the liquid temperature.

[0089] Description of the generation process: After the mixed gas enters the liquid pool 4, the steam condenses rapidly in the condensing liquid, releasing a condensation shock wave, which works together with the shear flow of the liquid to disperse the non-condensable gas into micro-nano bubbles with a diameter of 0.1-50 μm.

[0090] Step 5: Adjustment of bubble concentration and size

[0091] A pressure regulator is installed on the top of the liquid pool 4 to optimize the bubble diameter and concentration by adjusting the pressure of the liquid.

[0092] The aperture of the nozzle 3, the steam temperature and pressure, and the non-condensable gas flow ratio can all be flexibly adjusted through the control module to meet different bubble generation requirements.

[0093] Step 6: Collection and application of micro-nano bubbles

[0094] Liquid pool 4 outlet structure: Liquid pool 4 outlet is designed as a separation chamber structure. The separation chamber is conical, with its top connected to the gas-liquid separation device and its bottom connected to the liquid circulation pump. The diameter of the separation chamber gradually decreases from the outlet to the liquid flow port to ensure effective separation of bubbles and liquid.

[0095] After passing through the separation device, the micro-nano bubbles are guided to the target application scenario, such as mass transfer, heat transfer or gas purification system. After separation, the liquid is returned to the liquid pool 4 through the circulation pump to realize the recycling of the liquid.

[0096] The steam source 1, the non-condensable gas source 2, the mixing pipe, the jet nozzle 3 and the liquid pool 4 are all modularly designed, and the shapes and structures of the components can be flexibly replaced. For example, the jet nozzle 3 can be replaced with a multi-hole nozzle 3 to meet different bubble distribution requirements; the shape of the liquid pool 4 can be adjusted from a rectangle to a cylinder to meet space constraints.

[0097] The component materials support a variety of options. For example, the liquid pool 4 can be made of stainless steel, glass or corrosion-resistant plastic to meet the needs of different working fluid environments.

[0098] Embodiment 8: This embodiment provides a computer storage medium for storing a computer program. When the computer program is read by a computer, the computer executes the method provided in embodiment 7.

[0099] Embodiment 9: This embodiment provides a computer, including a processor and a storage medium. When the processor reads a computer program stored in the storage medium, the computer executes the method provided in embodiment 7.

[0100] Embodiment 10: This embodiment provides a computer program product, which is a computer program. When the computer program is executed, the method provided in embodiment 7 is implemented.

[0101] The technical solution provided by the present invention is further described in detail above through several specific implementation modes in order to highlight the advantages and benefits of the technical solution provided by the present invention. However, the several specific implementation modes described above are not intended to be used as limitations on the present invention. Any reasonable modification and improvement of the present invention, combination of implementation modes and equivalent substitution within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A micro-nano bubble generation system based on steam jet condensation, characterized in that: include: a steam source for providing steam of set temperature and pressure, wherein the steam source is connected to the mixing pipe; A non-condensable gas source, used for providing non-condensable gas of set pressure and flow, wherein the non-condensable gas source is connected to the mixing pipeline; A mixing pipeline, used for mixing the steam outputted from the steam source with the non-condensable gas outputted from the non-condensable gas source to form a mixed gas; A jet nozzle connected to the mixing pipe, used for spraying the mixed gas into the liquid pool at a set speed; A liquid reservoir is used to contain condensed liquid.

2. The micro-nano bubble generation system based on steam jet condensation according to claim 1, characterized in that: The jet nozzle is a single-hole circular nozzle or a multi-hole nozzle, and its hole diameter, jet angle and jet speed are adjustable.

3. The micro-nano bubble generation system based on steam jet condensation according to claim 1, characterized in that: The liquid pool is located below the jet nozzle.

4. The micro-nano bubble generation system based on steam jet condensation according to claim 1, characterized in that: The liquid in the liquid pool is used to perform condensation and shearing action with the injected mixed gas to form micro-nano bubbles.

5. The micro-nano bubble generation system based on steam jet condensation according to claim 1, characterized in that: The liquid pool is provided with a temperature control device and a pressurizing device to adjust the temperature and pressure of the liquid.

6. The micro-nano bubble generation system based on steam jet condensation according to claim 1, characterized in that: A vortex mixing structure is provided in the mixing pipe to enhance the mixing uniformity of the steam and the non-condensable gas.

7. A method for generating micro-nano bubbles based on steam jet condensation, characterized in that: The method is implemented based on the system of claim 1, comprising: The step of collecting steam parameters including steam source temperature, pressure and flow parameters; The step of sending a control signal according to the steam parameter; The step of collecting non-condensable gas parameters of flow rate and pressure parameters of the non-condensable gas source; The step of sending a control signal according to the non-condensable gas parameter; The steps of collecting gas flow rate and pressure and adjusting the ratio of steam and non-condensable gas; Steps for sending injection speed and injection angle control signals.

8. A computer storage medium for storing a computing program, characterized in that: When the computer program is read by a computer, the computer executes the method of claim 7.

9. A computer, comprising a processor and a storage medium, characterized in that: When the processor reads the computer program stored in the storage medium, the computer executes the method of claim 7 .

10. A computer program product, being a computer program, characterized in that When the computer program is executed, the method of claim 7 is implemented.

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