A mixing system for improving the mixing performance of solid-liquid-gas

Abstract

The present invention discloses a mixing system for improving the mixing performance of solid, liquid and gas, comprising: a gas-solid ejector, a solid-liquid mixing ejector, and a powder-gas conveying pipe connected between the outlet end of the gas-solid ejector and the powder-gas inlet end of the solid-liquid mixing ejector; the solid-liquid mixing ejector is higher than the gas-solid ejector; the gas-solid ejector is used to introduce the powder-gas mixture after mixing high-speed gas flow and dry powder into the powder-gas conveying pipe; the liquid inlet end of the solid-liquid mixing ejector is used to introduce liquid with a certain pressure, and the flow of the liquid forms a negative pressure in the solid-liquid mixing ejector, sucking the powder-gas mixture in the powder-gas conveying pipe into the liquid mixing ejector for mixing with the liquid. This mixing system can increase the suction lift of the powder-gas mixture to 7 meters, and at the same time can increase the amount of dry powder added per unit time, increase the amount of polymer solution prepared each time, which is beneficial to accurately prepare the concentration of the polymer solution and prepare a polymer solution with a higher concentration.

Description

Technical Field

[0001] The present invention relates to the field of chemical flooding in oil extraction, and particularly to a mixing system for enhancing the mixing performance of solid, liquid and gas. Background Art

[0002] Oil extraction generally is divided into three stages: generally, using the energy of the oil reservoir to extract oil is called primary oil recovery; injecting water and gas into the oil reservoir to supplement energy for oil extraction is called secondary oil recovery; and using chemical substances to improve the performance among oil, gas, water and rock to extract more oil is called tertiary oil recovery. Chemical flooding has become one of the important stable production means in the tertiary oil recovery stage. The so-called chemical flooding, also known as modified water flooding chemical method, is an oil extraction method in which chemical agents are added to the injected water to change the physical and chemical properties of the displacement fluid and the interfacial properties between the displacement fluid and crude oil and rock minerals, thereby being beneficial to crude oil production. The polymer dispersion device is a device for preparing chemical agents for oil displacement into a standard solution. In this device, water and polymer dry powder need to be fully mixed. Therefore, ensuring the full dispersion of polymer dry powder into water is the core process in the preparation of polymer solution.

[0003] There are mainly two common ways to mix water and polymer dry powder: one is that the dry powder naturally falls and mixes with water, or the dry powder is blown to the water-powder mixing head by wind, and the dry powder is mixed with water in a dispersed form. These two ways both belong to the water mantle type; the other is to disperse and mix the dry powder and water by means of jet flow using the Venturi tube principle. The mixing way of the water mantle type is gradually replaced by the jet flow way which is simple in structure, convenient for maintenance and low in energy consumption because it is easy to cause fish eyes, and its equipment is complex and energy consumption is high.

[0004] The existing jet ejector has a single structural composition, is easy to cause blockage of the powder pipe, and the capacity of the jet ejector is limited. Generally, the preparation amount is only 60m 3 / h, the preparation concentration is 5000 - 6000 ppm, and the suction lift is only more than 2m. Today, as chemical flooding gradually becomes the main means to improve oil recovery, new and higher requirements are continuously put forward for the polymer solution preparation process (higher solution concentration, larger solution preparation amount, more accurate preparation solution concentration, providing higher suction lift, etc.); at the same time, in different tertiary oil recovery processes, polymer solutions with different concentrations need to be prepared, and the relative addition amounts of dry powder and water need to be adjusted. In the existing polymer dispersion device, the addition amounts of dry powder and water need to be controlled separately, and the addition amount of dry powder can only be adjusted by adjusting the gas flow rate of the jet ejector. This adjustment method has great limitations and is not conducive to accurately preparing the concentration of polymer solution and polymer solution with a higher concentration. Summary of the Invention

[0005] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a mixing system for improving the solid-liquid-gas mixing performance. This mixing system can fully mix gas, dry powder and liquid, can simultaneously increase the amount of dry powder added per unit time, increase the suction lift, increase the amount of polymer solution prepared per single time, and increase the maximum value of the concentration of the prepared polymer solution.

[0006] To achieve the above object, the technical solution of the present invention is as follows:

[0007] A mixing system for improving the solid-liquid-gas mixing performance, comprising: a gas-solid ejector, a solid-liquid mixing ejector, and a powder-gas delivery pipe connected between the outlet end of the gas-solid ejector and the powder-gas inlet end of the solid-liquid mixing ejector; the solid-liquid mixing ejector is higher than the gas-solid ejector;

[0008] The gas-solid ejector is used to introduce the powder-gas mixture after mixing high-speed gas flow and dry powder into the powder-gas delivery pipe;

[0009] The liquid inlet end of the solid-liquid mixing ejector is used to introduce liquid with a certain pressure. The flow of the liquid forms a negative pressure in the solid-liquid mixing ejector, sucking the powder-gas mixture in the powder-gas delivery pipe into the liquid mixing ejector for mixing with the liquid.

[0010] Further, the solid-liquid mixing ejector includes: an adjusting nozzle sleeved on the outlet end of the powder-gas delivery pipe, a liquid input pipe sleeved on the outside of the adjusting nozzle, and an output pipe coaxially arranged with the outlet end of the powder-gas delivery pipe;

[0011] The output pipe includes a gradually reducing section with a gradually decreasing inner diameter, a throat section with a consistent inner diameter, and a flared section with a gradually increasing inner diameter; the liquid input pipe is filled with liquid with a certain pressure, and the outlet end of the liquid input pipe is connected to the end of the gradually reducing section of the output pipe; an annular gap for the liquid to pass through is formed between the adjusting nozzle and the inner wall of the gradually reducing section of the output pipe;

[0012] A piston member is sleeved outside the powder-gas delivery pipe, the adjusting nozzle is fixed on the piston member, and the piston member drives the adjusting nozzle to move axially in the output pipe to change the size of the annular gap.

[0013] Further, the solid-liquid mixing ejector further includes a housing sleeved on the adjusting nozzle. The inner diameter of the housing matches the outer diameter of the adjusting nozzle. The housing is fixed at the end of the liquid input pipe, and the outer wall of the end of the housing extending into the liquid infusion pipe forms an infusion channel with the input end of the liquid input pipe.

[0014] Further, the solid-liquid mixing injector further includes a transparent cover fixed to the end face of the housing, and the piston member is installed in the space between the transparent cover and the housing; an adjusting member extending out of the transparent cover is connected to the piston member, and the adjusting member is used to drive the piston member, and further drive the adjusting nozzle to move axially on the output pipe.

[0015] Further, the input pipe section of the liquid input pipe is symmetrically arranged on both sides of its axis.

[0016] Further, the included angle between the liquid flow direction of the liquid input pipe and the dry powder flow direction in the adjusting nozzle is an acute angle.

[0017] Further, the outlet end of the liquid input pipe and the end of the tapered section of the output pipe are connected by a flange with a gradually decreasing inner diameter.

[0018] Further, the outlet section of the adjusting nozzle has a guiding section with a gradually decreasing outer diameter and a variable inner diameter section. The variable inner diameter section includes a tapered section with a gradually decreasing inner diameter, a throat section with a consistent inner diameter, and a flared section with a gradually increasing inner diameter connected in sequence.

[0019] Further, the gas-solid injector includes a housing. The housing is coaxially provided with an inlet end and an outlet end for high-speed air flow. The housing is provided with a dry powder input channel for transporting dry powder between the inlet end and the outlet end. The inlet end and the outlet end are respectively detachably connected with a nozzle with an axially adjustable position and a converging-diverging short section.

[0020] Further, the nozzle includes a circular pipe section and a conical nozzle head. High-speed air flow with controllable flow rate and pressure is introduced into the circular pipe section and flows from the small end of the conical nozzle head to the converging-diverging short section.

[0021] Further, one end of the converging-diverging short section is connected to the outlet end of the housing, and the other end is connected to the powder-air conveying pipe; the inner diameter of the converging-diverging short section gradually increases from the middle to both ends.

[0022] Further, the included angle between the axial direction of the dry powder input channel and the high-speed air flow direction is an acute angle.

[0023] Further, the gas-solid injector further includes a dry powder feed hopper, and a connecting short section on the housing is connected between the dry powder input channel and the dry powder feed hopper.

[0024] Further, the gas used to send dry powder into the gas-solid injector is nitrogen or inert gas.

[0025] The mixing system of the present invention for improving the solid-liquid-gas mixing performance has the following beneficial effects:

[0026] A powder-gas mixture is transported into a powder-gas delivery pipe by a lower gas-solid ejector, and the powder-gas mixture is sucked from the powder-gas delivery pipe by a higher solid-liquid mixing ejector. The powder-gas mixture is transported at a lower position and sucked at a higher position. Through the coordinated cooperation of these two methods, the suction lift of the powder-gas mixture can be increased to 7 meters. At the same time, the amount of dry powder added per unit time can be increased, and the amount of polymer solution prepared per single time can be increased. By separately adding dry powder and liquid, it is beneficial to accurately prepare the concentration of the polymer solution. By mixing high-speed air flow and dry powder, the dry powder is fully dispersed into the air flow so that the dry powder and the liquid can be fully mixed, which is beneficial to preparing a polymer solution with a higher concentration. Description of the Drawings

[0027] Figure 1 It is a schematic cross-sectional view of the composition structure of a mixing system for improving the solid-liquid-gas mixing performance provided by an example of the present invention;

[0028] Figure 2 It is a schematic cross-sectional structure view of 100 in the mixing system for improving the solid-liquid-gas mixing performance of an example of the present invention;

[0029] Figure 3 It is a schematic cross-sectional structure view of 200 in the mixing system for improving the solid-liquid-gas mixing performance of an example of the present invention;

[0030] In the figure:

[0031] 100, gas-solid ejector; 110, outer shell; 111, dry powder input channel; 112, inlet end; 113, outlet end; 114, connecting short section; 120, dry powder feed hopper; 130, nozzle; 131, cylindrical section; 132, conical spray head; 140, converging-diverging short section;

[0032] 200, solid-liquid mixing ejector; 220, regulating nozzle; 221, guiding section; 222, converging section of the regulating nozzle; 223, throat section of the regulating nozzle; 224, flaring section of the regulating nozzle; 230, liquid input pipe; 231, input pipe section; 240, output pipe; 241, converging section of the output pipe; 242, throat section of the output pipe; 243, flaring section of the output pipe; 250, piston part; 251, regulating part; 260, housing; 261, accommodating groove; 270, transparent cover; 280, flange;

[0033] 300, powder-gas delivery pipe. Detailed Embodiment

[0034] To clearly illustrate the design concept of the present invention, the present invention will be described below with reference to examples.

[0035] To enable those skilled in the art to better understand the solution of the present invention, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the examples of the present invention. Obviously, the described examples are only a part of the examples of the present invention, rather than all of them. Based on the examples in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0036] In the description of this embodiment, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0037] As Figure 1 shown in the example, a mixing system for improving the solid-liquid-gas mixing performance of the present invention is provided, including: a gas-solid injector 100, a solid-liquid mixing injector 200, and a powder-gas delivery pipe 300 connected between the outlet end of the gas-solid injector 100 and the powder-gas inlet end of the solid-liquid mixing injector 200; the solid-liquid mixing injector 200 is higher than the gas-solid injector 100;

[0038] The gas-solid injector 100 is used to introduce the powder-gas mixture after mixing high-speed air flow and dry powder into the powder-gas delivery pipe 300;

[0039] The liquid inlet end of the solid-liquid mixing injector 200 is used to introduce liquid with a certain pressure. The flow of the liquid forms a negative pressure in the solid-liquid mixing injector 200, sucking the powder-gas mixture in the powder-gas delivery pipe 300 into the liquid mixing injector 200 for mixing with the liquid.

[0040] In this example, by using the lower gas-solid injector 100 to transport the powder-gas mixture into the powder-gas delivery pipe 300, and sucking the powder-gas mixture from the powder-gas delivery pipe 300 in the higher solid-liquid mixing injector 200, transporting at a lower position and sucking at a higher position, the suction lift of the powder-gas mixture can be increased to 7 meters through the coordinated cooperation of these two methods. At the same time, it can increase the amount of dry powder added per unit time and increase the amount of polymer solution prepared per time. By adding dry powder and liquid separately, it is beneficial to accurately prepare the concentration of the polymer solution. Through the mixing of high-speed air flow and dry powder, the dry powder is fully dispersed into the air flow, so that the dry powder can be fully mixed with the liquid, which is beneficial to preparing a polymer solution with a higher concentration.

[0041] It should be noted that the solid-liquid mixing injector 200 is higher than the gas-solid injector 100, so that the gas and dry powder are fully mixed in the gas-solid injector 100 and the powder-gas delivery pipe 300, so that the dry powder is fully dispersed into the space in the powder-gas delivery pipe 300, so that when the powder-gas mixture reaches the solid-liquid mixing injector 200, it can be fully mixed with the liquid, and the mixed polymer solution is injected into the dissolution tank.

[0042] See Figure 2 , the gas-solid injector in the mixing system includes a housing 110, an inlet end 112 and an outlet end 113 for high-speed air flow are coaxially arranged on the housing 110, and the housing 110 is provided with a dry powder input channel 111 for delivering dry powder between the inlet end 112 and the outlet end 113. The inlet end 112 and the outlet end 113 are respectively detachably connected with a nozzle 130 and a converging-diverging short section 140 with adjustable axial position. Among them, the nozzle 130 is used to deliver high-speed air flow, and the converging-diverging short section 140 is connected to the powder-gas delivery pipe 300.

[0043] Compared with the prior art, in the gas-solid injector in this example, the distance between the nozzle 130 and the converging-diverging short section 140 can be adjusted, and the amount of dry powder added is controlled by adjusting this distance and the flow rate of the high-speed air flow introduced. In this way, the amount of dry powder added can be adjusted within a large range, which is convenient for preparing a polymer solution with a higher concentration; at the same time, the nozzle 130 and the converging-diverging short section 140 can be disassembled, which is convenient for replacement and maintenance. The nozzle 130 and the converging-diverging short section 140 can be respectively connected to the inlet end 112 and the outlet end 113 by a snap connection. For example, the inlet end 112 and the outlet end 113 are respectively provided with bayonets, and the nozzle 130 and the converging-diverging short section 140 are respectively provided with different snap connection positions axially, so as to realize the adjustment of the axial position.

[0044] In this example, the nozzle 130 and the converging-diverging short section 140 are respectively connected to the inlet end 112 and the outlet end 113 by threads, and by adjusting the length of the tightened threads, the adjustment of the axial position can be realized.

[0045] In this example, the nozzle 130 includes a circular tube section 131 and a conical nozzle 132. The high-speed air flow with controllable flow rate and pressure is connected to the circular tube section 131 and flows from the small end of the conical nozzle 132 to the converging-diverging short section, so as to increase the gas flow rate.

[0046] In this example, one end of the converging-diverging short section 140 is connected to the outlet end 113 of the housing 110, and the other end is connected to the powder-gas delivery pipe 300. The inner diameter of the converging-diverging short section 140 gradually increases from the middle to both ends. The diameter change of the converging-diverging short section 140 at the end connected to the housing 110 facilitates the entry of dry powder into the converging-diverging short section 140 under the action of high-speed air flow, and the diameter change of the converging-diverging short section 140 at the end connected to the powder-gas delivery pipe 300 facilitates the high-speed air flow to disperse the dry powder, so that the dry powder and the liquid can be fully mixed in the subsequent process of preparing the polymer solution.

[0047] In this example, the included angle α between the axial direction of the dry powder input channel 111 and the direction of the high-speed air flow is an acute angle, so that under the action of the high-speed air flow, it is easy for the dry powder to enter the converging-diverging short section 140.

[0048] The gas-solid injector 100 of this example further includes a dry powder feed hopper 120, and the connecting short section 114 on the outer shell 110 is connected between the dry powder input channel 111 and the dry powder feed hopper 120.

[0049] In this example, the gas used for the high-speed air flow transporting the dry powder is nitrogen.

[0050] When the gas-solid injector 100 of this example is in use, the axes of the inlet end 112 and the outlet end 113 are generally parallel to the horizontal plane to facilitate the high-speed air flow to transport the dry powder, while the axial direction of the dry powder feed hopper 120 is perpendicular to the water surface to facilitate the addition of the dry powder by gravity. And in order to facilitate the dry powder to enter the converging-diverging short section 140, the included angle α between the axial direction of the dry powder input channel 111 and the direction of the high-speed air flow is an acute angle. Therefore, the setting of the connecting short section 114 is equivalent to the connecting joint between the dry powder input channel 111 and the dry powder feed hopper 120. During use, the operator can control the addition amount of the dry powder by adjusting the gas flow rate entering the injector and / or the distance between the nozzle 130 and the converging-diverging short section 140. The nozzle 130 and the converging-diverging short section 140 can be disassembled by threads, which is convenient for replacement and maintenance.

[0051] See Figure 3 , the solid-liquid mixing injector 200 in the mixing system includes: an adjusting nozzle 220 sleeved on the outlet end of the powder-gas conveying pipe 300, a liquid input pipe 230 sleeved on the outside of the adjusting nozzle 220, and an output pipe 240 coaxially arranged with the outlet end of the powder-gas conveying pipe 300; the output pipe 240 includes a converging section 241 with a gradually decreasing inner diameter, a throat section 242 with a consistent inner diameter, and a flaring section 243 with a gradually increasing inner diameter; a liquid with a certain pressure is fed into the liquid input pipe 230, and the outlet end of the liquid input pipe 230 is connected to the end of the converging section 241 of the output pipe 240; an annular gap A for the liquid to pass through is formed between the adjusting nozzle 220 and the inner wall of the converging section 241 of the output pipe 240; a piston member 250 is sleeved outside the powder-gas conveying pipe 300, the adjusting nozzle 220 is fixed on the piston member 250, and the piston member 250 drives the adjusting nozzle 220 to move axially in the output pipe 240 to change the size of the annular gap A.

[0052] In the solid-liquid mixing injector 200 in this example, the regulating nozzle 220 is located in the tapered section 241 of the output pipe 240. Through the settings of the tapered section 241, throat section 242, and flared section 243 of the output pipe 240, it is beneficial to suck the dry powder into the output pipe 240 by the Venturi principle. In the output pipe 240, the dry powder blown by the air flow is mixed with the liquid, and the mixed polymer solution is injected into the dissolution tank. Among them, the tapered section 241 of the output pipe 240 accelerates the flow rate of the dry powder, and the flared section 243 enables the two to be more fully mixed. By adjusting the displacement of the piston member 250 along the axial direction of the outlet end of the powder-air conveying pipe 300, the annular gap A between the regulating nozzle 220 and the tapered section of the output pipe 240 is adjusted to control the injection amount and flow rate of the liquid. The solid-liquid mixing injector of the present invention can accelerate the flow rate of the dry powder through the output pipe 240 set by the Venturi principle. At the same time, adjusting the annular gap A between the output pipe 240 and the regulating nozzle 220 can adjust the flow rate and flow rate of the liquid. Through the above-mentioned synergistic effect, it is easy to prepare a large amount of solution and a solution with a high concentration.

[0053] The piston member 250 in this example can be provided with a limiting device by itself, or the piston member 250 itself is not provided with a limiting device and is cooperated with an additional auxiliary limiting device for limiting. The limiting of the piston member 250 means that after adjusting the annular gap A between the regulating nozzle 220 and the tapered section of the output pipe 240 through the piston member 250, the piston member 250 is positioned to ensure that the annular gap A does not change and ensure that the speed of adding the liquid remains consistent when the solid-liquid mixing injector 200 is working.

[0054] The solid-liquid mixing injector 200 in this example further includes a housing 260 sleeved on the regulating nozzle 220. The inner diameter of the housing 260 is matched with the outer diameter of the regulating nozzle 220. The housing 260 is fixed at the end of the liquid input pipe 230. The outer wall of the end of the housing 260 extending into the liquid infusion pipe 230 forms an infusion channel I with the input end of the liquid input pipe 230. Through the setting of the housing 260, the infusion channel I is formed, which is convenient for the liquid to enter the liquid input pipe 230. At the same time, it avoids the liquid from affecting the axial movement of the piston member 250.

[0055] The solid-liquid mixing injector 200 in this example further includes a transparent cover 270 fixed to the end face of the housing 260. The piston member 250 is installed in the space between the transparent cover 270 and the housing 260. A regulating member 251 is connected to the piston member 250 and extends out of the transparent cover 270. The regulating member 251 is used to drive the piston member 250, and further drive the regulating nozzle 220 to move axially in the output pipe 240. The piston member 250 moves axially in the space between the transparent cover 270 and the housing 260. The piston member 250 is arranged in the space between the transparent cover 270 and the housing 260 to protect the piston member 250 from the influence of the outside world and ensure its stable axial movement. Preferably, a receiving groove 261 is provided on the end face of the housing 260, and the piston member 250 is installed in the receiving groove 261. That is, the piston member 250 moves axially in the receiving groove 261.

[0056] The input pipe segments 231 of the liquid input pipe 230 are symmetrically arranged on both sides of its axis. So that the liquid can be evenly input into the output pipe 240, as Figure 3 shown, in this example, the two input pipe segments 231 are symmetrically arranged on both sides of its axis.

[0057] In this example, the included angle between the liquid flow direction of the liquid input pipe 230 and the dry powder flow direction in the regulating nozzle 220 is an acute angle, that is Figure 1 α1 to α4 in, are all acute angles, and are acute angles with gradually decreasing included angles.

[0058] The input pipe segments 231 of the liquid input pipe 230 are symmetrically arranged, and the included angle between the liquid flow direction and the dry powder flow direction is an acute angle, which is convenient for the liquid to flow into the output pipe 240 inward and reduces swirling and turbulent flow.

[0059] In this example, the regulating member 251 can be a regulating bolt, and the regulating bolt passes through the transparent cover 270 and is screwed onto the piston member 250.

[0060] The outlet end of the liquid input pipe 230 and the end of the tapered section 241 of the output pipe 240 are connected by a flange 280 with a gradually decreasing inner diameter. The output pipe 240 is mechanically sealed to the liquid input pipe 230 through the flange 280. Of course, in order to increase the sealing performance between the output pipe 240 and the liquid input pipe 230, various forms of sealing rings can be added at the connection.

[0061] In this example, the outlet section of the regulating nozzle 220 has a diversion section 221 with a gradually decreasing outer diameter and an inner diameter variable section. The inner diameter variable section includes a gradually reducing section 222 with a gradually decreasing inner diameter, a throat section 223 with a consistent inner diameter, and a flaring section 224 with a gradually increasing inner diameter that are connected in sequence. The diversion section 221 of the regulating nozzle 220 is conducive to diverting the liquid into the output pipe 240; the inner diameter variable section provided near the outlet section of the regulating nozzle 220 also utilizes the Venturi principle. In the gradually reducing section 222, it helps to accelerate the dry powder, and in the flaring section 224, the air flow for feeding the dry powder is fully mixed with the dry powder, making the dry powder as dispersed as possible so that it can be fully mixed with the liquid in the output pipe 240.

[0062] Using nitrogen to feed the dry powder into the powder-air conveying pipe 300 helps with the feeding of the dry powder, improves the preparation concentration, and degrades the polymer formed after the dry powder is mixed with the liquid. In this example, nitrogen is used to feed the dry powder.

[0063] In this example, the liquid fed into the liquid input pipe 230 is water.

[0064] The dry powder, liquid, and gas are fully mixed in the output pipe 240, and after mixing, they are injected into a dissolution tank (not shown in the figure). The solution prepared by the solid-liquid mixing injector in this example has a high concentration, a large preparation amount per unit time, a single preparation amount of up to 150 m 3 / h, the preparation concentration is as high as 15,000 ppm, and the suction lift reaches 7 meters.

[0065] It should be noted that the nitrogen in the above example can be replaced with inert gases such as helium and neon. This can be done by those skilled in the art based on their basic skills on the basis of understanding the inventive concept, so it will not be listed one by one here.

[0066] Finally, it can be understood that the above embodiments are merely exemplary embodiments adopted to illustrate the principle of the present invention. However, the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the principle and essence of the present invention, and these modifications and improvements are also regarded as the protection scope of the present invention.

Claims

1. A mixing system for enhancing the mixing performance of solid, liquid and gas, characterized in that, Comprising: A gas-solid injector, a solid-liquid mixing injector, and a powder-gas delivery pipe connected between the outlet end of the gas-solid injector and the powder-gas inlet end of the solid-liquid mixing injector; The solid-liquid mixing injector is higher than the gas-solid injector; The gas-solid injector is used to introduce a powder-gas mixture after mixing high-speed air flow and dry powder into the powder-gas delivery pipe; The liquid inlet end of the solid-liquid mixing injector is used to introduce a liquid with a certain pressure. The flow of the liquid forms a negative pressure inside the solid-liquid mixing injector, sucking the powder-gas mixture in the powder-gas delivery pipe into the solid-liquid mixing injector for mixing with the liquid; The solid-liquid mixing injector includes: an adjusting nozzle sleeved on the outlet end of the powder-gas delivery pipe, a liquid input pipe sleeved on the outside of the adjusting nozzle, and an output pipe coaxially arranged with the outlet end of the powder-gas delivery pipe; The output pipe includes a tapered section with a gradually decreasing inner diameter, a throat section with a consistent inner diameter, and a flared section with a gradually increasing inner diameter that are connected in sequence; a liquid with a certain pressure is introduced into the liquid input pipe, and the outlet end of the liquid input pipe is connected to the end of the tapered section of the output pipe; an annular gap for the liquid to pass through is formed between the adjusting nozzle and the inner wall of the tapered section of the output pipe; The solid-liquid mixing injector further includes a housing sleeved on the adjusting nozzle. The inner diameter of the housing matches the outer diameter of the adjusting nozzle. The housing is fixed at the end of the liquid input pipe. The outer wall of the end of the housing extending into the liquid infusion pipe forms an infusion channel with the input end of the liquid input pipe; the inclination direction and inclination angle of the outer wall of the end of the housing extending into the liquid infusion pipe are completely consistent with the axis of the liquid infusion pipe; the included angle between the liquid flow direction of the liquid input pipe and the dry powder flow direction in the adjusting nozzle is an acute angle; A piston member is sleeved outside the powder-gas delivery pipe. The adjusting nozzle is fixed on the piston member. The piston member changes the size of the annular gap by driving the adjusting nozzle to move axially in the output pipe; the solid-liquid mixing injector further includes a transparent cover fixed on the end face of the housing. The piston member is installed in the space between the transparent cover and the housing; an adjusting member is connected to the piston member and extends out of the transparent cover. The adjusting member is used to drive the piston member to move axially in the space between the transparent cover and the housing, thereby driving the adjusting nozzle to move axially in the output pipe; The outlet section of the adjusting nozzle has a guiding section with a gradually decreasing outer diameter and an inner diameter variable section. The inner diameter variable section includes a tapered section with a gradually decreasing inner diameter, a throat section with a consistent inner diameter, and a flared section with a gradually increasing inner diameter that are connected in sequence.

2. The hybrid system according to claim 1, wherein The gas-solid injector includes a housing. The housing is coaxially provided with an inlet end and an outlet end for high-speed air flow. The housing is provided with a dry powder input channel for delivering dry powder between the inlet end and the outlet end. The inlet end and the outlet end are respectively detachably connected with an axially position-adjustable nozzle and a converging-diverging short section.

3. The hybrid system according to claim 2, wherein The nozzle includes a circular pipe section and a conical spray head. A high-speed air flow with controllable flow rate and pressure is connected to the circular pipe section and flows from the small end of the conical spray head to the converging-diverging short section.

4. The hybrid system according to claim 2 or 3, characterized in that, One end of the converging-diverging nipple is connected to the outlet end of the outer shell, and the other end is connected to the powder-gas conveying pipe; the inner diameter of the converging-diverging nipple gradually increases from the middle to both ends.

5. The hybrid system according to claim 2, wherein The included angle between the axial direction of the dry powder input channel and the direction of the high-speed air flow is an acute angle.

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