Embedded micro-mixing flash extraction high-efficiency extraction device and use method

Abstract

The present invention proposes an embedded micro-mixing and flash extraction high-efficiency extraction device, comprising a micro-mixing and flash extraction pipeline mixer, a clarification chamber, an oil-water two-phase pipe, and a multiphase well. The micro-mixing and flash extraction pipeline mixer is inserted into the multiphase well from the top. This invention utilizes the existing micro-mixing and flash extraction pipeline mixer, innovates on conventional mixing and clarification extraction chambers and extraction technology, and also innovates on the application method of the micro-mixing and flash extraction pipeline mixer. The application of the micro-mixing and flash extraction pipeline mixer changes the structure of the existing stirring and mixing tank, discarding the large stirring and mixing tank of conventional mixing and clarification extraction chambers and adding a multiphase well, forming an embedded micro-mixing and flash extraction high-efficiency extraction device. This device breaks through the pumping and mixing methods of conventional extraction chambers and changes the rigid connection method between the micro-mixing and flash extraction pipeline mixer and the two-phase pipe. This technically improves the structure and operating principle of conventional mixing and clarification extraction chambers and innovates the application method of the micro-mixing and flash extraction pipeline mixer in deep and shallow tank extraction chambers.

Description

Technical Field

[0001] The present invention relates to the fields of nonferrous metal hydrometallurgy and rare earth extraction, and in particular to an embedded micro-mixing flash extraction high-efficiency extraction device and a use method thereof. Background Art

[0002] Due to their excellent operational stability and high throughput, mixed-settler extraction chambers are most widely used in cobalt, nickel, and copper refining and rare earth extraction processes. The application of micro-mixing flash extraction technology in non-ferrous metal hydrometallurgy has resulted in more complete extraction and mixing reactions, increasing stage efficiency to nearly 100%, reducing mixing and conveying power consumption by 50%, and saving 25% in building area and space, thus reducing total project investment and achieving significant energy and consumption reduction advantages. However, this technology is currently only used in newly built shallow-tank extraction chambers and has not been applied to deep-tank extraction chambers or those without clarifier support, nor to older or outdated chamber-type extraction equipment. Further development, innovation, and optimization of its application are needed to adapt it to various extraction processes, making it suitable for both shallow-tank and deep-tank extraction chambers. This technology should be applicable to both new extraction projects and the potential expansion and technological upgrading of existing extraction equipment, further increasing extraction chamber production capacity per unit area and reducing overall energy consumption. New extraction processes and equipment technologies must be developed, processes and equipment must be updated, and traditional extraction equipment must be optimized and upgraded. Summary of the Invention

[0003] According to the above technical problems, the present invention proposes an embedded micro-mixing flash extraction high-efficiency extraction device, including a micro-mixing flash extraction pipeline mixer, the micro-mixing flash extraction pipeline mixer includes an extraction two-phase fluid inlet unit, a lifting and propulsion unit, a differential mixing extraction unit, an outlet diversion unit, and a drive system, characterized in that it also includes a clarification chamber, an oil-water two-phase pipe, and a multiphase well. The micro-mixing flash extraction pipeline mixer is inserted into the multiphase well from the upper side, and the multiphase well is connected to the clarification chamber through the mixed phase outlet of the micro-mixing flash extraction pipeline mixer inserted therein, and the liquid inlet at the lower end of the micro-mixing flash extraction pipeline mixer is connected to the oil-water two-phase pipe in a connection-free manner. The connection-free connection means that the micro-mixing flash extraction pipeline mixer and the oil-water two-phase pipe are directly hard-connected together without a connector; the bottom of the multiphase well is connected to the oil-water two-phase pipe, and the mixed phase outlet of the micro-mixing flash extraction pipeline mixer is connected to the clarification chamber; the upper side of the micro-mixing flash extraction pipeline mixer is provided with a mixed phase outlet, and the clarification chamber is composed of a clarification chamber, a water phase outlet, an oil phase overflow tank, and an oil phase outlet. The multiphase well is a vertical cylindrical structure. The lower end of the multiphase well is connected to the oil-water two-phase pipe of this level, and the upper end of the multiphase well is inserted into the micro-mixing flash extraction pipeline mixer; the oil-water two-phase pipe is a water phase flow channel and an oil phase flow channel;

[0004] The clarification chamber is a conventional extraction oil-water clarification and separation device;

[0005] The oil-water two-phase pipes are the flow channels of the oil phase and the water phase respectively, including concealed pipes inside the box or exposed pipes outside the box;

[0006] The multiphase well refers to a component that allows two or more immiscible fluids, oil and water, to continuously flow upward from the bottom;

[0007] The multiphase well is connected to the oil phase pipe and the water phase pipe respectively.

[0008] The multiphase well is inserted in the clarification chamber, and the clarification chamber is in a fully surrounded structure. The fully surrounded structure means that the multiphase well is placed in the middle of the inner side or any position on any inner edge of the clarification chamber enclosure. The lower end of the multiphase well is connected to the oil and water two-phase pipes, and the upper end is connected to the clarification chamber through the mixed phase outlet of the micro-mixing flash extraction pipeline mixer.

[0009] The multiphase well is independently arranged outside the clarification chamber, separated from the clarification chamber, and independent of the clarification chamber, presenting an independent structure of the multiphase well; the independent structure means that the multiphase well is placed at the outer end of the clarification chamber enclosure or any position at either end of the outer side, the lower end of the multiphase well is connected to the oil and water two-phase pipes, and the upper end is connected to the clarification chamber through the mixed phase outlet of the micro-mixing flash extraction pipeline mixer.

[0010] The oil-water two-phase pipe, that is, the oil-water two-phase flow channel, the water phase and oil phase channels are placed at any horizontal or inclined position inside the clarification chamber.

[0011] The oil-water two-phase pipe, i.e. the oil-water two-phase flow channel, the water phase and oil phase channels are placed at any horizontal or inclined position on the outer bottom or outer side of the clarifier.

[0012] An embedded micro-mixing flash extraction high-efficiency extraction device, the specific operation method of which is as follows:

[0013] 1. When in use, multiple devices of the present application are connected to form a multi-stage countercurrent extraction device. The pre-extraction oil phase entering from the oil phase inlet of the entire set of extraction boxes or the oil phase from the oil phase outlet of the previous level clarification chamber and the water phase from the water phase outlet of the next level clarification chamber or the water phase inlet of the extraction box flow by gravity into the multiphase well of the current stage through the organic phase flow channel and the water phase flow channel of the current stage;

[0014] Second, the oil and water two-phase solution in the multiphase well is promoted and mixed by the micro-mixing flash extraction pipeline mixer. After the extraction reaction is completed, it is discharged into the clarification chamber of this level through the mixed phase outlet for clarification and separation of the oil phase and the water phase.

[0015] Third, the clarified oil phase of this stage flows from the oil phase outlet to the next stage, and the water phase flows from the water phase outlet to the previous stage. This process continues in this way, completing the entire extraction process of step-by-step mixed extraction and clarification separation. Ultimately, an oil phase that meets technical requirements is obtained from the last stage, and water phases that meet technical requirements are obtained from the water phase outlets of different extraction stages.

[0016] The multiphase well has a square structure.

[0017] The multiphase well is a circular structure.

[0018] The multiphase well may be other special-shaped structures that can be inserted into the micro-mixing flash extraction pipeline mixer.

[0019] The micro-mixing flash extraction high-efficiency extraction device is in the form of an embedded primary monomer.

[0020] The micro-mixing flash extraction high-efficiency extraction device is in an embedded multi-stage connected form.

[0021] An embedded micro-mixing flash extraction high-efficiency extraction device and its use method, the specific operation method of which is as follows: multiple devices of the present application are connected to form a multi-stage countercurrent extraction device, and the pre-extraction oil phase entering from the oil phase inlet of the entire extraction box or the oil phase from the oil phase outlet of the previous clarification chamber and the water phase from the water phase outlet of the next clarification chamber or the water phase inlet of the extraction box, flows into the multiphase well of the current stage through the organic phase flow channel and the water phase flow channel of the current stage; the oil and water two-phase solution in the multiphase well is then promoted and mixed by the micro-mixing flash extraction pipeline mixer. After the extraction reaction is completed, it is discharged into the clarification chamber of the current stage through the mixed phase outlet to clarify and separate the oil phase and water phase. The clarified oil phase of the current stage enters the next stage from the oil phase outlet, and the water phase enters the previous stage from the water phase outlet. In this way, the step-by-step mixing extraction and clarification separation of the entire extraction process are completed.

[0022] The present invention offers the following advantages: It utilizes a conventional micro-mixing and flash extraction pipeline mixer, which innovates upon conventional mixing and clarification extraction chambers and extraction technology. It also innovates upon the application method of the micro-mixing and flash extraction pipeline mixer. The micro-mixing and flash extraction mixer replaces the conventional large mixing and clarification chamber structure, adding a multiphase well to create an embedded micro-mixing and flash extraction high-efficiency extraction device. This breakthrough in conventional extraction chamber pumping and mixing methods also innovates the spatial arrangement of the micro-mixing and flash extraction pipeline mixer, the two-phase pipe, and the clarification chamber. It also innovates the application of the micro-mixing and flash extraction pipeline mixer in deep-tank extraction chambers, replacing the rigid connection method between the micro-mixing and flash extraction pipeline mixer and the two-phase pipe. The embedded flexible connection method makes the extraction process more stable, reliable, and easy to control, while also facilitating installation and achieving a more compact configuration. The clarification chamber eliminates the need for a base support, allowing it to be directly installed on the ground, saving plant space and reducing investment. The stirring support and dedicated support for the micro-mixing and flash extraction pipeline mixer, as required for conventional mixing and stirring chambers, are also eliminated, saving manufacturing and installation costs. The system is suitable for both shallow and deep tank extraction chambers, and is also suitable for upgrading existing extraction production lines to tap potential and expand capacity. It increases the production capacity of an extraction chamber with the same floor space by 25-33% compared to conventional mixing tanks, while reducing power consumption by over 50%. This further increases the extraction chamber's capacity per unit area and reduces overall energy consumption. The development of new extraction processes and equipment technologies is of great significance for upgrading extraction processes and equipment, and promoting the optimization and upgrading of traditional extraction equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic cross-sectional view of the built-in structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the plane configuration of the built-in structure when the present invention is used;

[0025] Figure 3 It is a schematic cross-sectional view of the external structure of the present invention;

[0026] Figure 4 This is a schematic diagram of the external structural plane configuration surface when the present invention is used;

[0027] Figure 5 This is a schematic elevation diagram of a square multiphase well and a two-phase pipe connection according to the present invention;

[0028] Figure 6 This is a schematic plan view of the built-in square multiphase well and the two-phase pipe connection of the present invention;

[0029] Figure 7 This is a schematic plan view of the external square multiphase well and the two-phase pipe connection of the present invention;

[0030] Figure 8 This is a schematic elevation diagram of a circular multiphase well and a two-phase pipe connection according to the present invention;

[0031] Figure 9 This is a schematic plan view of the built-in circular multiphase well and the two-phase pipe connection of the present invention;

[0032] Figure 10 This is a schematic plan view of the external circular multiphase well and the two-phase pipe connection of the present invention;

[0033] As shown in the figure, water phase outlet-1, oil phase overflow tank-2, oil phase outlet-3, mixed phase outlet-4, multiphase well-5, micro-mixing flash extraction pipeline mixer-6, oil phase flow channel-7, water phase flow channel-8, clarification chamber-9, water phase reflux port-10. DETAILED DESCRIPTION

[0034] Example 1

[0035] The present invention is an embedded micro-mixing flash extraction high-efficiency extraction device, which is characterized in that it includes a micro-mixing flash extraction pipeline mixer, a clarification chamber, an oil-water two-phase pipe, and a multiphase well. The micro-mixing flash extraction pipeline mixer is inserted into the multiphase well from the upper side, and the multiphase well is connected to the clarification chamber through the mixed phase outlet of the micro-mixing flash extraction pipeline mixer inserted therein, and the liquid inlet at the lower end of the micro-mixing flash extraction pipeline mixer is connected to the oil-water two-phase pipe in a connection-free manner. The connection-free manner means that the micro-mixing flash extraction pipeline mixer and the oil-water two-phase pipe are directly hard-connected together without a connector; the bottom of the multiphase well is communicated with the oil-water two-phase pipe, and the mixed phase outlet of the micro-mixing flash extraction pipeline mixer is connected to the clarification chamber; the upper side of the micro-mixing flash extraction pipeline mixer is provided with a mixed phase outlet, the clarification chamber is composed of a clarification chamber, a water phase outlet, an oil phase overflow tank, and an oil phase outlet. The multiphase well is an upright cylindrical body with a lower end connected to the oil-water two-phase pipe of this level, and the upper end is inserted into the micro-mixing flash extraction pipeline mixer; the oil-water two-phase pipe is composed of a water phase flow channel and an oil phase flow channel. The liquid inlet end of the water phase flow channel is connected to the water phase outlet of the lower clarification chamber, and the liquid inlet end of the organic phase flow channel is connected to the oil phase outlet of the upper clarification chamber; the clarification chamber is a conventional extraction oil-water clarification and separation device; the oil and water two-phase pipes are the flow channels of the oil phase and the water phase respectively, including concealed pipes inside the box or exposed pipes outside the box; the multiphase well refers to a component that allows the oil-water two-phase and more immiscible fluids to continuously flow up from the bottom.

[0036] Example 2

[0037] The present invention provides a method for using an embedded micro-mixing and flash extraction high-efficiency extraction device. This invention utilizes the previously patented micro-mixing and flash extraction high-efficiency extraction device, patent 2016112038935, to improve and innovatively apply conventional mixing and clarification extraction tanks and extraction technologies. The clarification chamber 9 serves as a conventional oil-water extraction clarification and separation device; the oil-water two-phase pipes 7 and 8 serve as flow channels for the oil and water phases, respectively. In this example, these pipes are concealed within the tank. The bottom of the multiphase well 5 connects to the oil-water two-phase pipes 7 and 8, and the micro-mixing and flash extraction pipeline mixer 6 is inserted above. The outlet 4 of the micro-mixing and flash extraction pipeline mixer 6 connects to the clarification chamber 9, forming a complete extraction stage. The multiphase well 5 temporarily stores the two-phase solution collected from the oil-water two-phase flow channels, providing a transition and connection between the water phase flow channel 8, the oil phase flow channel 7, the micro-mixing and flash extraction pipeline mixer 6, and the clarification chamber 9. The multiphase well 5 does not complete the mixing and extraction process, nor does it perform clarification and separation, completely different from the large mixing chamber in conventional mixing and clarification extraction tanks. The multiphase well 5 is embedded in the clarification chamber 9 and is fully surrounded by the clarification chamber 9 .

[0038] The specific operation method is: when in use, multiple embedded micro-mixing flash extraction high-efficiency extraction devices are connected to form a multi-stage countercurrent extraction device, and the oil phase overflow trough 2 of the upper clarification chamber 9 overflows through the oil phase outlet 3 and the water phase overflowing from the water phase overflow port 1 of the next clarification chamber 9 passes through the water phase flow channel 7 and the organic phase flow channel 8 of this stage, and flows into the multiphase well 5 by gravity at the same time. The oil and water two-phase solution in the multiphase well 5 is then pushed, lifted and mixed through the micro-mixing flash extraction pipeline mixer 6 and then discharged into the clarification chamber 9 of this stage. The entire extraction process is completed in this way. The lower end liquid inlet of the micro-mixing flash extraction pipeline mixer 6 does not need to be directly hard-connected with the water phase flow channel 7 and the oil phase flow channel 8. The micro-mixing flash extraction pipeline mixer 6 is free of connection with the water phase flow channel 7 and the organic phase flow channel 8. The micro-mixing flash extraction pipeline mixer 6 is embedded in the multiphase well 5. And the multiphase well 5 is also embedded in the clarification chamber 9. As Figure 1 and Figure 2 The structure of the multiphase well and the configuration of the oil-water two-phase pipes are as follows: Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 and Figure 10 .

[0039] Example 3

[0040] The present invention discloses an embedded micro-mixing and flash extraction high-efficiency extraction device and its use method. It comprises a micro-mixing and flash extraction pipeline mixer 6, a clarification chamber 9, an aqueous phase flow channel 7, an oil phase flow channel 8, and a multiphase well 5. The micro-mixing and flash extraction pipeline mixer 6 is based on another patented technology, "A Micro-mixing and Flash Extraction High-efficiency Extraction Device and Its Use Method 2016112038935." The clarification chamber 9 is a conventional oil-water clarification and separation device; the aqueous phase flow channel 7 and the organic phase flow channel 8 are the flow channels for the oil and aqueous phases, respectively. In this example, they are concealed pipes within the chamber, connected to exposed pipes outside the chamber. The multiphase well 5 is a new technical solution of the present invention. The bottom of the multiphase well 5 connects the aqueous phase flow channel 7 and the organic phase flow channel 8, and the micro-mixing and flash extraction pipeline mixer 6 is inserted above it. Through the outlet 4 of the micro-mixing and flash extraction pipeline mixer, it forms a complete extraction stage with the clarification chamber 9. Multiphase well 5 temporarily stores the two-phase solution collected from aqueous and organic phase channels 7 and 8, connecting these channels to the micro-mixing and flash extraction pipeline mixer 6, and vice versa. The multiphase well 5 does not complete the mixing and extraction process, nor does it provide clarification and separation, unlike the large mixing chambers of conventional mixing and clarification extraction tanks. The multiphase well is independently located outside the clarification chamber, separate from the clarification chamber, creating a self-contained structure.

[0041] The specific operation method is: when in use, multiple embedded micro-mixing flash extraction high-efficiency extraction devices are connected to form a multi-stage countercurrent extraction device, and the oil phase overflows from the oil phase overflow tank 2 of the upper clarification chamber 9, and the oil phase overflows through the oil phase outlet 3 and the water phase overflows from the water phase overflow port 1 of the next clarification chamber 9 through the water phase flow channel 7 and the organic phase flow channel 8 of their respective levels, and flows into the multiphase well 5 at the same time by gravity. The oil and water two-phase solution in the multiphase well 5 is then pushed, lifted and mixed through the micro-mixing flash extraction pipeline mixer 6 and then discharged into the clarification chamber 9 of this level. The entire extraction process is completed in this way. The lower end liquid inlet of the micro-mixing flash extraction pipeline mixer 6 does not need to be directly hard-connected to the water phase flow channel 7 and the oil phase flow channel 8. The micro-mixing flash extraction pipeline mixer 6 is free of connection to the water phase flow channel 7 and the organic phase flow channel 8. The micro-mixing flash extraction pipeline mixer 6 is embedded in the multiphase well 5. And the multiphase well 5 is also embedded in the clarification chamber 9. As Figure 3 and Figure 4 The structure of the multiphase well and the configuration of the oil-water two-phase pipes are as follows: Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 and Figure 10 .

[0042] The above shows and describes the basic principles, main features, and advantages of the present invention. The various components mentioned in the present invention are conventional technologies in the prior art. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An embedded micro-mixing and flash extraction high-efficiency extraction device, comprising a micro-mixing and flash extraction pipeline mixer, the micro-mixing and flash extraction pipeline mixer comprising an extraction two-phase fluid inlet unit, a lifting and propulsion unit, a differential mixing and extraction unit, an outlet diversion unit, and a drive system, characterized in that: The evaporator is connected to the oil-water two-phase pipe by a mixing port, and the mixing port is connected to the mixing port of the evaporator through the mixing port. The clarification chamber is an extraction oil-water clarification and separation device; The oil-water two-phase pipe includes a concealed pipe inside the box or an exposed pipe outside the box; The multiphase well refers to a component that allows the immiscible fluid of oil and water to continuously flow up from the bottom; The multiphase well is inserted in the clarification chamber, and the clarification chamber is in a fully surrounded structure. The fully surrounded structure means that the multiphase well is placed in the middle of the inner side or any position on any inner edge of the clarification chamber enclosure. The lower end of the multiphase well is connected to the oil-water two-phase pipe, and the upper end is connected to the clarification chamber through the mixed phase outlet of the micro-mixing flash extraction pipeline mixer.

2. The embedded micro-mixing flash extraction high-efficiency extraction device according to claim 1, characterized in that The water phase and oil phase flow channels of the oil-water two-phase pipe are placed at any horizontal or inclined position inside the clarification chamber.

3. According to the embedded micro-mixing flash extraction high-efficiency extraction device of claim 1, its specific operation method is as follows:

1. When in use, multiple embedded micro-mixing flash extraction high-efficiency extraction devices are connected to form a multi-stage countercurrent extraction device. The pre-extraction oil phase entering from the oil phase inlet of the multi-stage countercurrent extraction device or the oil phase from the oil phase outlet of the previous clarification chamber and the water phase from the water phase outlet of the next clarification chamber or the water phase inlet of the extraction box flow into the multi-phase well of the current stage through the oil phase flow channel and water phase flow channel of the current stage by gravity; Second, the oil and water two-phase solution in the multiphase well is promoted and mixed by the micro-mixing flash extraction pipeline mixer. After the extraction reaction is completed, it is discharged into the clarification chamber of this stage through the mixed phase outlet for clarification and separation of the oil phase and the water phase; 3. The clarified oil phase of this stage enters the next stage from the oil phase outlet, and the water phase enters the previous stage from the water phase outlet; this process is repeated to complete the step-by-step mixed extraction and clarification separation of the entire extraction process; ultimately, the oil phase that meets the technical requirements is obtained from the last stage, and the water phase that meets the technical requirements is obtained at the water phase outlets of different extraction sections.

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