Hemispherical-structure single-waterway snakelike reactor with passive mixing function

Abstract

The invention discloses a semi-spherical-structure single-waterway snake-shaped reactor with a passive mixing function. The semi-spherical-structure single-waterway snake-shaped reactor comprises a mixing cavity (2), a fluid inlet (1), a fluid outlet (3) and a plurality of semi-spherical mixing structures (4) located in the mixing cavity (2). A semispherical structure is ingeniously arranged in the mixing cavity, fluid vortex is induced by utilizing the curved surface characteristic of the semispherical structure, the shearing force and disturbance between fluids are remarkably enhanced, and efficient passive mixing is achieved. Meanwhile, the heat dissipation area is increased through the hemispherical surface, and the heat exchange efficiency of the downstream area and the wall face is optimized. The single-water-path design of the reactor ensures that fluid is fully mixed in the cavity and then discharged, so that the rate and uniformity of chemical reaction are effectively improved. By reasonably designing the distance and the arrangement mode of the hemispheres, the internal flowing path is more scientific, the problem of uneven mixing is reduced, and the operation efficiency is improved. The reactor is suitable for various chemical reactions, and especially shows excellent advantages in scenes needing heat dissipation or efficient passive mixing.

Description

Technical Field

[0001] The invention relates to fluid mixing and chemical reaction equipment, in particular to a hemispherical structure single-waterway serpentine reactor with a passive mixing function. Background Art

[0002] Fluid mixing is a key link in many industrial processes, directly affecting chemical reaction rates, mass transfer efficiency, and product uniformity. Traditional mixing devices mostly rely on mechanical stirring or active mixing devices, such as impellers, vibrators, or magnetic stirring, but these methods usually require additional energy input, are complex, and have high maintenance costs, making them unsuitable for scenarios that have high requirements for mixing efficiency and energy consumption.

[0003] In recent years, passive mixing technology has attracted widespread attention due to its advantages of simple structure and low energy consumption. Passive mixing devices usually optimize the fluid flow path or add special structures (such as fins, obstacles, vortex generators, etc.) to enhance the shearing and disturbance effects, thereby achieving more efficient mixing. However, the existing passive mixing devices still have the following problems in design:

[0004] 1. The fluid is not mixed sufficiently under low Reynolds number conditions, which easily forms dead zones or short-circuit flows, resulting in uneven mixing;

[0005] 2. Structural designs that enhance mixing effects often significantly increase fluid resistance and reduce energy efficiency;

[0006] 3. The device is not very targeted in actual application and is difficult to adapt to various reaction or heat exchange requirements. Summary of the invention

[0007] Purpose of the invention: The purpose of the present invention is to propose a passive serpentine reactor that can improve mixing efficiency and heat exchange by optimizing the mixing zone structure.

[0008] By introducing a hemispherical structure inside the square cavity and utilizing its curved surface geometry and distribution optimization, the fluid is induced to produce vortex and shear effects, significantly improving the mixing uniformity and efficiency. At the same time, the design of the hemispherical structure can also effectively increase the contact area between the fluid and the wall and optimize the heat exchange performance. The reactor has the characteristics of simple structure, strong adaptability and high efficiency and energy saving, and can be widely used in chemical reactions, heat transfer, fluid distribution and other scenarios.

[0009] Technical solution: A hemispherical single-channel serpentine reactor with a passive mixing function includes a mixing chamber, a fluid inlet, a fluid outlet, and a plurality of hemispherical mixing structures located inside the mixing chamber.

[0010] Furthermore, the mixing chamber is a square chamber structure.

[0011] Furthermore, the hemispherical mixing structure is a hemispherical protrusion.

[0012] Furthermore, the surface of the hemispherical protrusion is a smooth curved surface, which can induce the fluid to form a vortex and enhance the mixing reaction effect.

[0013] Furthermore, the hemispherical mixing structures are arranged on the top and bottom surfaces of the mixing chamber and are staggered in the fluid flow direction.

[0014] Furthermore, the spacing and size between adjacent hemispherical mixing structures are optimally designed according to the Reynolds number of the fluid to reduce mixing inhomogeneity.

[0015] Furthermore, the spacing ratio of the hemispherical hybrid structure on the same side is (L / D=4), and the spacing ratio of the top and bottom is (L / D=2).

[0016] Furthermore, the mixing chamber is made of metal material.

[0017] Furthermore, the cross-sectional areas of the fluid inlet and the fluid outlet are equal.

[0018] A reaction method of a hemispherical single-channel serpentine reactor with a passive mixing function as claimed in claim 1, comprising the following steps:

[0019] (1) Fluid enters from the fluid inlet;

[0020] (2) Flowing through the hemispherical structure area set in the mixing chamber, efficient passive mixing of the fluid is achieved by generating vortex and shearing effects;

[0021] (3) The mixed fluid flows out from the outlet, achieving uniformity and efficiency improvement of the reaction or heat exchange.

[0022] Among them, the side of the mixing chamber is connected with an inlet section and an outlet section that are parallel to each other, and the inlet and the outlet are facing oppositely; hemispherical structural obstacles are staggered on the top and bottom of the mixing chamber; the fluid is in the form of a waterway that flows in the same direction in the inlet section, the mixing chamber and the outlet section. The inlet section and the outlet section are parallel to each other and have equal lengths; the inlet section and the outlet section are connected to the two sides of the mixing chamber respectively. The inlet section and the outlet section have a certain length, and a sufficiently long inlet section can allow the fluid to develop before entering the mixing chamber, which is beneficial to the subsequent mixing process. The cross-sections of the inlet and the outlet are preferably square cross-sections with equal cross-sectional areas. The flow rate of the liquid entering from the above-mentioned inlet can be controlled, which is convenient for controlling the mixing and reaction of the liquid.

[0023] Preferably 12 hemispherical obstacles are evenly distributed in the mixing chamber to promote the diffusion effect of the liquid, thereby promoting the liquid-liquid mixing efficiency and heat exchange with the outside world. The hemispherical obstacles are arranged in a staggered manner around the top and bottom of the mixing chamber; after the fluid flows through the obstacles, under the influence of the obstacles, the flow rate is reduced to induce fluid vortex, and it is fully mixed with another fluid in the mixing area. At the same time, the hemispherical obstacles increase the contact area of ​​the wall of the mixture to improve heat exchange. The mixing chamber is connected to the inlet section, the outlet section and the outlet section by welding, and the hemispherical obstacles are integrally formed by die casting, thereby ensuring the airtightness of the microchannel reactor device.

[0024] The invention is applicable to a variety of fluid mixing scenarios, including but not limited to industrial and scientific research applications such as chemical reactions, heat exchange, fluid control and distribution.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The device cleverly arranges a hemispherical structure inside the square cavity, uses its curved surface characteristics to induce fluid vortexes, significantly enhances the shear force and disturbance between the fluids, and achieves efficient passive mixing. At the same time, the hemispherical surface increases the heat dissipation area and optimizes the heat exchange efficiency between the downstream area and the wall. The single water channel design of the reactor ensures that the fluid is fully mixed in the cavity before being discharged, effectively improving the rate and uniformity of the chemical reaction. By rationally designing the hemispherical spacing and layout, the internal flow path is more scientific, the problem of uneven mixing is reduced, and the operating efficiency is improved. The reactor is suitable for a variety of chemical reactions, especially in scenarios that require heat dissipation or efficient passive mixing. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the reactor of the present invention;

[0028] Figure 2 It is a schematic diagram of the arrangement of the partial hemispherical structure of the reactor of the present invention inside the mixing chamber. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be further described below.

[0030] Figure 1 It is a structural schematic diagram of an embodiment of a hemispherical structure single water channel serpentine reactor device with passive mixing function of the present invention.

[0031] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be further described below.

[0032] A hemispherical single-channel serpentine reactor with a passive mixing function in this embodiment includes an inlet 1, a mixing chamber 2 and an outlet 3. Figure 1 As shown, the mixing chamber 2 is a square chamber structure, with parallel inflow sections and outflow sections connected on both sides, and the inlet and outlet have equal areas and are in opposite directions. There is a hemispherical mixing structure 4 in the mixing chamber 2, and the hemispherical structures are staggered at the top and bottom of the mixing chamber to allow the fluid to be fully mixed in the mixing chamber and exchange heat with the wall.

[0033] In this embodiment, there are 12 hemispherical structures 4 in the mixing chamber 2 to promote full mixing in the mixing chamber and heat exchange with the wall. Figure 2 The hemispherical structures in the embodiment shown are staggered at the top and bottom of the mixing chamber, with the spacing ratio between adjacent hemispheres on the same side being (L1 / D=4) and the spacing ratio between adjacent staggered hemispheres being (L2 / D=2).

[0034] like Figure 1 As shown, in a single-channel serpentine reactor, the fluid flows from the inlet 1 through the mixing chamber 2 to the outlet 3, and the flow direction of the fluid undergoes two flow directions, which are counter-flow to increase the length of the reactor and increase the reaction time.

[0035] The height of the inlet 1, the mixing chamber 2 and the outlet 3 of the reactor device in this embodiment are consistent. In this embodiment, the mixing chamber 2 is connected to the inlet section, the outlet section, the baffle column and other components by welding, so that the connection between the components is tighter. The hemisphere is formed by integral die-casting, thereby ensuring that the mixing or reaction process is carried out under closed conditions and reducing product leakage.

[0036] The above is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any technician in the relevant technical field, without departing from the scope of the technical solution of the present invention, makes any form of equivalent replacement or modification to the technical solution and technical content disclosed in the present invention, which does not depart from the content of the technical solution of the present invention and still falls within the protection scope of the present invention.

Claims

1. A hemispherical single-channel serpentine reactor with passive mixing function, characterized in that: The invention comprises a mixing chamber (2), a fluid inlet (1), a fluid outlet (3), and a plurality of hemispherical mixing structures (4) located inside the mixing chamber (2).

2. The hemispherical single-channel serpentine reactor with passive mixing function according to claim 1, characterized in that: The mixing chamber (2) is a square chamber structure.

3. The hemispherical single-channel serpentine reactor with passive mixing function according to claim 1, characterized in that: The hemispherical mixing structure (4) is a hemispherical protrusion.

4. The hemispherical single-channel serpentine reactor with passive mixing function according to claim 3, characterized in that: The surface of the hemispherical protrusion is a smooth curved surface, which can induce the fluid to form a vortex and enhance the mixing reaction effect.

5. The hemispherical single-channel serpentine reactor with passive mixing function according to claim 1, characterized in that: The hemispherical mixing structures (4) are arranged on the top and bottom surfaces of the mixing chamber and are arranged in a staggered manner in the direction of fluid flow.

6. The hemispherical single-channel serpentine reactor with passive mixing function according to claim 5, characterized in that: The spacing and size between adjacent hemispherical mixing structures (4) are optimally designed according to the Reynolds number of the fluid to reduce mixing inhomogeneity.

7. The hemispherical single-channel serpentine reactor with passive mixing function according to claim 1 is characterized in that: The spacing ratio of the hemispherical mixing structure (4) on the same side is (L / D=4), and the spacing ratio of the top and bottom is (L / D=2).

8. The hemispherical single-channel serpentine reactor with passive mixing function according to claim 1, characterized in that: The mixing chamber (2) is made of metal material.

9. The hemispherical single-channel serpentine reactor with passive mixing function according to claim 1, characterized in that: The cross-sectional areas of the fluid inlet (1) and the fluid outlet (3) are equal.

10. A reaction method of a hemispherical single-channel serpentine reactor with passive mixing function as claimed in claim 1, characterized in that: The steps are as follows (1) Fluid enters from fluid inlet (1); (2) flowing through the hemispherical structure area provided in the mixing chamber (2), and achieving efficient passive mixing of the fluid by generating vortex and shearing action; (3) The mixed fluid flows out from the outlet (3), achieving uniformity and efficiency improvement of the reaction or heat exchange.

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