A shear continuous reaction apparatus

Abstract

This utility model discloses a shearing continuous reaction device, belonging to the technical field of chemical reaction equipment. The device includes a main reactor, which is divided into section A and section B along the material flow direction. Section A has inlet 1 and inlet 2 at its bottom and multiple star-shaped shearing components within it. Section B has inlet 3 and inlet 4 on its sidewall and multiple alternating cross-mixing structures within it. The main reactor has an outlet at its top. The space around the star-shaped shearing components is filled with a heat exchange medium. Temperature zones 1, 2, and 3 are respectively located on the outside of the main reactor corresponding to the lower part of section A and the upper part of section B. The design of filling the space around the star-shaped shearing components with a heat exchange medium solves the contradiction of "shearing structures encroaching on heat exchange space." Combined with the independent temperature control of temperature zones 1 in section A and 2 and 3 in section B, precise temperature matching can be achieved for different stages such as "dispersion preheating → high temperature of the main reaction → cooling of post-treatment."

Description

Technical Field

[0001] This utility model relates to the field of chemical reaction equipment technology, and more specifically, to a shearing continuous reaction device. Background Technology

[0002] Continuous flow synthesis technology serves as a core support for continuous and efficient production in fields such as chemical and pharmaceutical intermediate synthesis and functional material preparation. The continuous flow reactor, which maintains dynamic reaction equilibrium by continuously feeding and excluding reactants at a stable flow rate, offers advantages over batch reactors, including higher production efficiency and better product stability. However, existing continuous flow reactors still have significant limitations in material dispersion, multi-step reaction integration, and coordinated heat exchange and temperature control. Conventional devices rely on flow rate disturbances, simple baffles, or spiral channels for mixing, resulting in weak shear force. This makes it difficult to quickly break down phase interfaces or particle agglomeration in high-viscosity materials and multiphase systems, leading to decreased reaction rates and product uniformity. Forcibly increasing the flow rate to enhance shear can easily cause channel blockage and a surge in energy consumption. Therefore, we propose a shear-based continuous reaction device. Utility Model Content

[0003] The purpose of this invention is to provide a shearing continuous reaction device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A shearing continuous reaction device includes a main reactor, which is divided into section A and section B along the material flow direction;

[0006] Section A has two feed inlets at the bottom, and multiple star-shaped shearing components inside.

[0007] Section B has inlet three and inlet four on its side wall, and multiple alternating cross-mixing structures inside section B;

[0008] The main reactor is equipped with a discharge port at the top;

[0009] The gaps around the star-shaped shear member are filled with heat exchange medium, and temperature zone one, temperature zone two, and temperature zone three are respectively provided on the outside of the main reactor corresponding to section A, the lower part of section B, and the upper part of section B.

[0010] Preferably, the star-shaped shearing member is a four-armed star structure, with the included angle between adjacent arms of a single four-armed star-shaped shearing member being 95°, and the arms of adjacent four-armed star-shaped shearing members forming a shearing gap with an included angle of 65° through staggered arrangement.

[0011] Preferably, the alternating cross-mixing structure consists of several flow plates and confluence cavities.

[0012] Preferably, the heat exchange medium is heat transfer oil, molten salt, or a fluid with high thermal conductivity.

[0013] Preferably, the four-arm star-shaped shear member is made of stainless steel, ceramic, or corrosion-resistant alloy.

[0014] Preferably, temperature zones one, two, and three are each equipped with independent temperature sensors and heating / cooling modules to achieve zoned temperature control.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] (1) This utility model, through the design of the 95° single-component arm angle of the four-arm star-shaped shear component in section A and the 65° staggered gap of the adjacent four-arm star-shaped shear components, forms differentiated shear, which can efficiently solve the problems of agglomeration of high-viscosity materials and phase interface barrier of multiphase systems, improve the uniformity of material dispersion, and does not require increasing the flow rate to enhance shear, effectively avoiding the problems of flow channel blockage and high energy consumption. The segmented design of section A and section B of the main reactor, combined with the multi-stream feeding structure of double bottom feeding in section A and double sidewall feeding in section B, can complete the multi-step process of "initial material dispersion → main reaction → secondary reagent addition → deep modification" in sequence, without the need for series independent equipment, reducing material loss and reducing system pressure drop. At the same time, through the alternating cross mixing structure of "diverter plate + confluence chamber" in section B, the flow field turbulence and reaction zone interference in multi-step reaction are avoided, ensuring the stability of continuous production.

[0017] (2) The design of filling the heat exchange medium around the star-shaped shear component of this utility model solves the contradiction of "the shear structure occupies the heat exchange space". With the independent temperature control of temperature zone 1 of section A, temperature zone 2 of section B and temperature zone 3, the temperature conditions can be accurately matched for different stages such as "dispersion preheating → high temperature of main reaction → cooling of post-processing", effectively suppressing the occurrence of side reactions. It is especially suitable for the synthesis of fine chemical and pharmaceutical intermediates that are sensitive to temperature. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the star-shaped shear component structure of this utility model.

[0020] The numbers in the diagram are explained as follows: 1. Main reactor; 1-1. Inlet 1; 1-2. Inlet 2; 1-3. Inlet 3; 1-4. Inlet 4; 1-5. Outlet. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Example:

[0023] Please see Figure 1-2 A shear-dispersion continuous reaction device includes a main reactor 1, which is divided into sections A and B along the material flow direction. This division of sections A and B forms an integrated structure of "step-by-step processing + continuous connection," avoiding the material loss, increased pressure drop, and flow field disturbance problems caused by traditional multi-device series connection. By integrating the functional zones of "shear dispersion" and "deep mixing reaction," the device can specifically enhance the core process requirements of each stage (section A focuses on shear dispersion, and section B focuses on uniform mixing reaction), while also achieving continuous material flow from dispersion to reaction, significantly improving production efficiency and reducing equipment footprint and system complexity.

[0024] Section A has two feed inlets, 1-1 and 1-2, at its bottom. Multiple star-shaped shear components are located within Section A. The gaps around these star-shaped shear components are filled with heat exchange medium. Temperature zones 1, 2, and 3 are located outside the main reactor 1, corresponding to Section A, the lower part of Section B, and the upper part of Section B, respectively. Each of these zones is equipped with an independent temperature sensor and a heating / cooling module, enabling zoned temperature control.

[0025] Specifically, the dual feed inlets in section A can introduce materials with different properties. Upon initial contact, the materials enter the star-shaped shearing zone. The basic shearing force formed by the 95° single-component arm angle and the enhanced shearing gap formed by the 65° adjacent components create a differentiated shearing effect. This effectively breaks down the agglomeration structure of high-viscosity materials or the phase interface of multiphase systems, solving the problem of insufficient dispersion of high-viscosity / multiphase materials in traditional devices. The star-shaped shearing components are filled with heat exchange media such as heat transfer oil. Combined with the independent temperature control of temperature zone one, the material temperature can be simultaneously controlled during the shearing and dispersion stage (such as preheating or cooling to the reaction initiation temperature). This avoids the impact of frictional heat generation or temperature fluctuations during the shearing process on subsequent reactions. At the same time, it solves the contradiction of the shearing structure occupying heat exchange space, balancing shearing efficiency and temperature control accuracy.

[0026] Section B has inlet 3 (1-3) and inlet 4 (1-4) on its sidewalls, and multiple alternating cross-mixing structures within it. The dual inlets on the sidewalls of Section B allow for the flexible introduction of reagents (such as catalysts and modifiers) required for subsequent reactions. Combined with the alternating cross-mixing structures, the material is dispersed into multiple streams by the diverter plate, and then re-converges and mixes after entering the confluence chamber. Repeated operation can further homogenize the material initially dispersed in Section A, solving the problem of "uneven mixing during secondary feeding" in traditional series reactors and ensuring a uniform concentration distribution in the reaction system. The lower part (temperature zone 2) and the upper part (temperature zone 3) of Section B are independently temperature-controlled, which can respectively match the temperature requirements of the "main reaction" and the "post-treatment / modification reaction" (e.g., temperature zone 2 maintains a high temperature for the main reaction, while temperature zone 3 controls the cooling modification). This avoids a decrease in reaction selectivity caused by single temperature control, and is especially suitable for complex reaction processes that require step-by-step temperature control.

[0027] The main reactor 1 is equipped with discharge ports 1-5 at the top; the top discharge can use the material flow pressure to naturally discharge the product, reduce retention and reduce the risk of scaling.

[0028] In this application, the star-shaped shear member is a four-armed star structure. The included angle between adjacent arms of a single four-armed star-shaped shear member is 95°, and the arms of adjacent four-armed star-shaped shear members are arranged in an alternating manner to form a shearing gap with an included angle of 65°.

[0029] In this application, the alternating cross-mixing structure consists of several flow plates and a confluence cavity.

[0030] In this application, the heat exchange medium is heat transfer oil, molten salt, or a high thermal conductivity fluid. Heat transfer oil, molten salt, etc., are suitable for different temperature ranges, improving the versatility of the device.

[0031] In this application, the four-arm star-shaped shear component is made of stainless steel, ceramic, or corrosion-resistant alloy. Stainless steel, ceramic, or corrosion-resistant alloy are suitable for different corrosive material systems, thus extending the service life of the equipment.

[0032] This device, through segmented functional integration, differentiated shear design, zoned temperature control, and structural optimization, collaboratively solves the problems of "insufficient shear dispersion, difficulty in multi-step reaction integration, and contradiction between heat exchange and temperature control" in existing continuous reaction devices, significantly improving the efficiency, stability, and applicability of continuous flow reactions.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A shear-continuous reaction apparatus, comprising a main reactor (1), characterized in that: The main reactor (1) is divided into section A and section B in sequence along the material flow direction; The bottom of section A is provided with inlet 1 (1-1) and inlet 2 (1-2), and multiple star-shaped shearing components are provided inside section A; The sidewall of section B is provided with inlet three (1-3) and inlet four (1-4), and section B is provided with multiple alternating cross-mixing structures; The main reactor (1) is provided with a discharge port (1-5) at the top; The gaps around the star-shaped shear member are filled with heat exchange medium, and the main reactor (1) is provided with temperature zone one, temperature zone two and temperature zone three corresponding to the lower part of section A and the upper part of section B.

2. The shearing continuous reaction device according to claim 1, characterized in that: The star-shaped shearing member is a four-armed star structure. The included angle between adjacent arms of a single four-armed star-shaped shearing member is 95°, and the arms of adjacent four-armed star-shaped shearing members are arranged in an alternating manner to form a shearing gap with an included angle of 65°.

3. The shearing continuous reaction device according to claim 1, characterized in that: The alternating cross-mixing structure consists of several flow plates and confluence cavities.

4. The shearing continuous reaction device according to claim 1, characterized in that: The heat exchange medium is heat transfer oil, molten salt, or a high thermal conductivity fluid.

5. A shearing continuous reaction apparatus according to claim 2, characterized in that: The four-arm star-shaped shear member is made of stainless steel, ceramic, or corrosion-resistant alloy.

6. A shearing continuous reaction apparatus according to claim 1, characterized in that: Each of the three temperature zones is equipped with an independent temperature sensor and a heating / cooling module to achieve zoned temperature control.

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