A high energy-saving multiphase flow rapid mixing reactor

Abstract

The invention discloses a high energy-saving multiphase flow rapid mixing reactor, which is characterized in that an inlet sleeve seat is provided with a liquid inlet A along the axial direction; a first-stage impeller is provided in a first-stage inlet shell, and a circuitous flow channel connected to a second-stage inlet shell is provided inside the first-stage inlet shell; a radial liquid inlet B is provided on the second-stage inlet shell; a second-stage cutting impeller is provided in the second-stage inlet shell, and a second-stage flow diversion guide vane is provided on the right side of the second-stage impeller; a third-stage impeller is provided in an interstage shell a, and a third-stage guide vane is provided at the left end of the third-stage impeller; a fourth-stage impeller is provided in an interstage shell b, and a radial liquid outlet is provided on the outlet shell. The advantages of the invention are simple structure, good stability, safety and reliability, fast full-interface mixing speed, high efficiency, and sufficient raw material reaction; the mixing time is greatly shortened, sufficient diffusion and propagation between molecules are achieved, and energy is saved.

Description

Technical Field

[0001] The invention relates to the field of reactors, in particular to a high energy-saving multiphase flow fast reactor. Background Art

[0002] In the hydrometallurgy, pharmaceutical, water treatment, chemical and environmental protection industries, liquid-liquid rapid reaction is mainly used for extraction, stripping or preparation of polymers. In the production process, the initial mixing effect between the reaction raw materials greatly affects the distribution of the final product, the yield and quality of the product, and will affect the design and energy consumption indicators of the whole process. At present, 80% of the mixing process in the prior art is completed in a stirred tank. The macroscopic mixing time corresponding to the process of this mixed fluid is relatively long, and the process is mainly controlled by macroscopic mixing. In the liquid-liquid reaction process, the sufficient diffusion and propagation between molecules are the main factors affecting the results of the mixed reaction. For this reason, it is necessary to study a new type of mixed reactor. Summary of the invention

[0003] The purpose of the present invention is to provide a highly energy-saving multiphase flow rapid mixing reactor with a simple and reasonable structure, which greatly improves the reaction efficiency and solves the above technical problems.

[0004] In order to achieve the above technical objectives and meet the above technical requirements, the technical solution adopted by the present invention is: a high energy-saving multiphase flow rapid mixing reactor, including a main shaft, an inlet sleeve seat is arranged at the left end of the main shaft, and a liquid inlet A is arranged along the axial direction of the inlet sleeve seat; the inlet sleeve seat is matched with the first-stage inlet shell, and the first-stage inlet shell is matched with the second-stage inlet shell; the end of the second-stage inlet shell is matched with an interstage shell a, an interstage shell b, a final shell and an outlet shell in sequence; it is characterized in that a first-stage impeller is arranged in the first-stage inlet shell, and a circuitous flow channel connected to the second-stage inlet shell is arranged inside the first-stage inlet shell; a radial liquid inlet B is arranged on the second-stage inlet shell; a second-stage cutting impeller is arranged in the second-stage inlet shell, and a second-stage diversion guide vane is arranged on the right side of the second-stage impeller; a third-stage impeller is arranged in the interstage shell a, and a third-stage guide vane is arranged on the left end of the third-stage impeller; a fourth-stage impeller is arranged in the interstage shell b, and a radial liquid outlet is arranged on the outlet shell.

[0005] Preferably, the flow channel in the primary inlet shell is converged with the flow channel in the secondary inlet shell.

[0006] Preferably: the first-stage impeller and the second-stage impeller are both cutting and crushing impellers; the crushing impeller is configured as an open impeller, and the blades are configured as column blades.

[0007] Preferably, the three-stage impeller and the four-stage impeller are spiral cutting mixing impellers.

[0008] Preferably, the three-stage impeller and the four-stage impeller are spiral flat plate impellers.

[0009] Preferably: the inner hole of the cutting and crushing impeller is provided with a keyway, and the blades of the cutting and crushing impeller are evenly distributed along the circumferential direction.

[0010] Preferably, the blade shape of the spiral cutting mixing impeller is consistent with the Archimedean curve.

[0011] Preferably, the spiral flat impeller comprises a circular base, on which spirally distributed scimitar-shaped blades are arranged in a conical shape.

[0012] The beneficial effects of the present invention are as follows: a highly energy-saving multiphase flow rapid mixing reactor, compared with the traditional structure: a liquid inlet A is respectively arranged on the first-level inlet shell, a liquid inlet B is arranged on the second-level inlet shell, cutting and crushing impellers are arranged in the first-level inlet shell and the second-level inlet shell, and the flow channel in the first-level inlet shell is combined with the flow channel in the second-level inlet shell; the cutting and crushing impellers are first used to high-speed crush the solutions to achieve a certain equivalent of tiny particles, and then the two micron-level feed liquids are passed through the guide flow channel for full-interface mixing, with fast speed, high efficiency, and sufficient raw material reaction; according to the working conditions, a spiral cutting mixing impeller or a spiral flat impeller is selected after the third level to achieve micro-mixing close to the molecular level; the present invention has a simple structure, good stability, safety and reliability, greatly shortens the mixing time, achieves sufficient diffusion and propagation between molecules, and saves energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the present invention;

[0014] Figure 2 For the present invention Figure 1 Schematic diagram of the structure of the reactor part;

[0015] Figure 3 This is a schematic diagram of the structure of the cutting and crushing impeller of the present invention;

[0016] Figure 4 Schematic diagram of the structure of the spiral cutting mixing impeller of the present invention; I in the figure is an Archimedean spiral curve;

[0017] Figure 5 It is a schematic diagram of the spiral flat impeller structure;

[0018] Figure 6 For the present invention Figure 5 AA section view;

[0019] The arrow direction in the figure is the flow channel direction;

[0020] In the figure: 1. Main shaft; 2. Inlet sleeve seat; 3. Liquid inlet A; 4. First-stage inlet casing; 5. Second-stage inlet casing; 6. Interstage casing a; 7. Interstage casing b; 8. Last-stage casing; 9. Outlet casing; 10. First-stage impeller; 11. Flow channel; 12. Liquid inlet B; 13. Second-stage impeller; 14. Second-stage diverter guide vane; 15. Third-stage impeller; 16. Third-stage guide vane; 17. Fourth-stage impeller; 18. Liquid outlet. DETAILED DESCRIPTION

[0021] In order to make the invention objectives, technical solutions and beneficial technical effects of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods;

[0022] In the attached drawings: a high energy-saving multiphase flow rapid mixing reactor, comprising a main shaft 1, an inlet sleeve seat 2 is arranged at the left end of the main shaft 1, and a liquid inlet A3 is arranged along the axial direction of the inlet sleeve seat 2; the inlet sleeve seat 2 is matched with the first-stage inlet shell 4, and the first-stage inlet shell 4 is matched with the second-stage inlet shell 5; the end of the second-stage inlet shell 5 is matched with an interstage shell a6, an interstage shell b7, a final shell 8 and an outlet shell 9 in sequence; a first-stage impeller 10 is arranged in the first-stage inlet shell 4, and a A circuitous flow passage 11 connected with the secondary inlet casing 5 is arranged inside the first-stage inlet casing 4; a radial liquid inlet port B12 is arranged on the secondary inlet casing 5; a secondary impeller 13 is arranged inside the secondary inlet casing 5, and a secondary flow diversion guide vane 14 is arranged on the right side of the secondary impeller 13; a third-stage impeller 15 is arranged inside the interstage casing a6, and a third-stage guide vane 16 is arranged on the left end of the third-stage impeller 15; a fourth-stage impeller 17 is arranged inside the interstage casing b7, and a radial liquid outlet 18 is arranged on the outlet casing 9.

[0023] Specifically, the flow channel in the first-stage inlet housing 4 is converged with the flow channel in the second-stage inlet housing 5; the first-stage impeller 10 and the second-stage impeller 13 are both cutting and crushing impellers; the crushing impeller is set as an open impeller, and the blades are set as columnar blades; the third-stage impeller 15 and the fourth-stage impeller 17 are spiral cutting and mixing impellers or spiral flat plate impellers. The inner hole of the cutting and crushing impeller is provided with a keyway, and the blades of the cutting and crushing impeller are evenly distributed along the circumferential direction; the spiral cutting and mixing impeller, the blade shape of the spiral cutting and mixing impeller is consistent with the Archimedean curve; the spiral flat plate impeller includes a circular base, and the base is provided with spirally distributed scimitar-shaped blades, and they are distributed in a cone.

[0024] The working principle of the present invention is as follows: fluid A enters from the liquid inlet A at the front end of the first-stage impeller of the reactor, and obtains greater turbulence and small particles reaching the micron level under the high-speed scissors of the first-stage cutting and crushing impeller; raw material B enters from the liquid inlet B, and raw material B is also broken into small droplets of micron level under the action of the second-stage cutting and crushing impeller. The two liquids form a non-interfering discharge under the guidance of the guide impeller, and at the same time enter the vortex mixing zone for pre-mixing. The two liquids are subjected to turbulent stretching, shearing, crushing and segmentation, and the mixture reaches a high degree of uniformity, and then is again acted on by the impellers after the third stage to achieve microscopic mixing close to the molecular level.

[0025] Embodiment 1:

[0026] In view of the fact that the slurry contains certain particles, the crystals generated in the third phase in the actual production process are prone to cause blockage. A swirl pump structure is adopted, and the impeller blades after the third stage adopt a combination of cutting blades and Archimedean spiral curves, that is, a spiral cutting mixing impeller; the swirl is used to achieve the role of mixing and mass transfer.

[0027] Blade front curve

[0028] Impeller inlet radius; Inlet angle;

[0029] Impeller starting diameter;

[0030] R inlet impeller curve radius;

[0031] It is an empirical coefficient related to the viscosity of the liquid and the particle size, and is usually taken as (1.2-1.8);

[0032] Embodiment 2:

[0033] For the mixed reaction of liquid containing oil, spiral flat impellers are used from the third stage onwards, which can play a role of non-cutting and non-destructive. When working, the mixed conveying is achieved by the spiral suction and forced conveying at the front end, the centrifugal force generated during rotation, the friction inside the medium and the adhesion between the liquids, thus avoiding the shearing and collision between the liquid medium coming in from the front end and the turntable. The impeller of this structure has no destructive impact on the fluid, avoiding the emulsification phenomenon caused by the cutting and destruction of the medium by the impeller. When the impeller rotates, it drives the medium to produce a rotational motion. Under the guidance of the special radial guide vane blades, the rotating liquid enters the annular space formed between the outside of the guide impeller and the shell, and rotates and mixes before entering the next stage of mixing reaction.

[0034] In the above embodiment, both the first-stage impeller and the second-stage impeller are cutting impellers. The cutting impeller: considering the functions of suction, transfer, cutting and crushing, the impeller structure is an open impeller, the blades are columnar blades, and the curve radius is:

[0035] ;

[0036] In the formula is the inlet radius, Inlet angle;

[0037] is the exit radius, Inlet angle;

[0038] K is the correction coefficient of 1.1-1.7, and its size selection is related to the properties and specific gravity of the liquid;

[0039] The above embodiments are merely descriptions for the purpose of clearly illustrating the present invention, and are not limitations on the implementation methods. For those skilled in the art, other different forms of changes or modifications may be made based on the above descriptions. It is not necessary and impossible to enumerate all the implementation methods here, and the obvious changes or modifications derived therefrom are still within the scope of protection of the present invention.

Claims

1. A high energy-saving multiphase flow rapid mixing reactor, comprising a main shaft (1), an inlet sleeve seat (2) is arranged at the left end of the main shaft (1), and a liquid inlet A (3) is arranged along the axial direction of the inlet sleeve seat (2); the inlet sleeve seat (2) is matched with a first-stage inlet shell (4), and the first-stage inlet shell (4) is matched with a second-stage inlet shell (5); the end of the second-stage inlet shell (5) is matched with an interstage shell a (6), an interstage shell b (7), a final shell (8) and an outlet shell (9) in sequence; the characteristics are as follows: A first-stage impeller (10) is arranged in the first-stage inlet casing (4), and a circuitous flow passage (11) communicating with the second-stage inlet casing (5) is arranged inside the first-stage inlet casing (4); a radial liquid inlet port B (12) is arranged on the second-stage inlet casing (5); a second-stage impeller (13) is arranged in the second-stage inlet casing (5), and a second-stage flow dividing guide vane (14) is arranged on the right side of the second-stage impeller (13); a third-stage impeller (15) is arranged in the interstage casing a (6), and a third-stage guide vane (16) is arranged at the left end of the third-stage impeller (15); the interstage casing b (7) A four-stage impeller (17) is arranged inside, and a radial liquid outlet (18) is arranged on the outlet casing (9); the first-stage impeller (10) and the second-stage impeller (13) are both cutting and crushing impellers; the crushing impeller is arranged as an open impeller, and the blades are arranged as columnar blades; the inner hole of the cutting and crushing impeller is arranged with a keyway, and the blades of the cutting and crushing impeller are evenly distributed along the circumferential direction; the third-stage impeller (15) and the fourth-stage impeller (17) are spiral cutting and mixing impellers; or the third-stage impeller (15) and the fourth-stage impeller (17) are spiral flat plate impellers; When the three-stage impeller (15) and the four-stage impeller (17) adopt spiral cutting mixing impellers, the blade shape of the spiral cutting mixing impeller is consistent with the Archimedean curve; When the three-stage impeller (15) and the four-stage impeller (17) use spiral flat blades, the spiral flat impeller comprises a circular base, on which are arranged spirally distributed scimitar-shaped blades in a conical shape.

2. A high energy-saving multiphase flow rapid mixing reactor according to claim 1, characterized in that: The flow channel in the primary inlet shell (4) converges with the flow channel in the secondary inlet shell (5).

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